Unbalanced to balanced converter board S/N Ratio — 95dB balanced to unbalanced, 87dB unbalanced to balanced, unweighted. It has one stereo pair of RCA input jacks and a stereo pair of XLR output jac Aug 7, 2020 · The unbalanced to balanced board designed with BB's enthusiast DRV134 chip can be used to match the power amplifier board with differential input (balanced input), or it can be used as a dual-channel power amplifier board to change the BTL output. The 10 kOhm unbalanced Left and Right inputs are designed to accept signals from -20 dBV to -10 dBV. They want to have the mixers on-stage, with the hub and amplifier in a rack backstage (30’ or so away). In this mode the amps serve as an unbalanced to "unbalanced with separate active grounds" converter. (Going the other way from unbalanced to balanced is OK It's OK to "short" an input to ground. If it’s active balanced you might loose 6dB headroom without a balanced/differential front end. , unbalanced to balanced converter) for audiophiles. [2] A balun can take many forms and may include devices that also transform impedances Feb 28, 2007 · The fix: I used a passive direct box in reverse (Groove Tubes PDI, around $20 on ebay) to go from balanced XLR to unbalanced TS, then into the unbalanced patchbay. Jun 29, 2012 · Here is a quick project on using the DRV134 for converting an unbalanced to balanced signals. It features two balanced or unbalanced inputs and outputs, both on captive screw connectors. 2 Balanced vs. Unbalanced audio impedance of consumer-grade electronics can vary anywhere from 270 to 470 ohms or more. An unbalanced signal is the typical signal coming out of a signal generator, consumer audio equipment, headphone jacks. Is this understanding correct, and is there a box/converter cable which essentially does this (and would this approach allow me to get away without Apr 27, 2009 · Pylepro model: Pdc211/4'' Instrument to balanced & Unbalance1/4'' Instrument to balanced & unbalanced (1/4''/XLR) direct box construction: All steel chassis ground lift: switch-able ground lift balanced output: 600 balanced XLR jack instrument input: 50K unbalanced TS jack parallel (link) out: 50K unbalanced TS jack input attenuation: switch-able (0dB, -20dB,-40dB) dimension: 4. The BUC 202 provides two independent channels of signal matching between unbalanced and balanced audio equi [] An unbalanced to balanced converter is a device used to convert an unbalanced electrical signal into a balanced signal. I'd start with swapping out the cables Jul 16, 2004 · XLR connectors for balanced inputs and outputs ; RCA phono jacks and stereo 1/8″ mini-phone jacks for unbalanced inputs and outputs ; Comes with external power supply for operation with AC mains ; Applications: Home or professional recording studios, Live sound, PA, and permanent installs, DJ, AV, and consumer HiFi, Podcasting and broadcasting Aug 10, 2022 · Therefore, the use of only balanced or only unbalanced connections is recommended. If Fully floating, either transformer or electronically balanced, join pins 1&3, and take signal from 2. Sweetwater has a 500 Series module for that. This Balanced/Unbalanced Converter is really two projects in one. For them I need a Unbalanced to Balanced converter. Join pin 1 to Pin 3, signal to pin 2. Is it better to use an RCA to XLR converter that corrects the voltage? Unbalanced to Balanced Converter Board fit Differential input Amp to BTL Output. But I’d like to listen my other Unbalaced sources (Phono stage, Tape deck, Tuner radio, ecc) too. it's not really going to help. 1pcs x Unbalanced to Balanced Dual Channel Stereo ConverterBare PCB. biz/line_input/PDF/CMLI-600-600C. from Features:*Low Distortion Preamplifier:This assembled board features a low distortion preamplifier with a gain of 2, which effectively converts an unbalanced signal to a balanced signal. In other cases, cables combine Nov 23, 2015 · I looked into this pretty extensively a while ago but never pulled the trigger. Jul 22, 2016 · Note that active DI boxes tend to work from unbalanced input to balanced output (and consequently may be powered by phantom power which is only available on balanced connections). 1x Unbalanced to When you want to transmit audio signals over longer distances, it is advisable to use balanced connections. stdClass Object ( [product_id] => 3859 [product_parent_id] => 0 [product_name] => RDL FP-UBC2 Unbalanced to Balanced Converter - 2 Channel [product_short] => [product_description] => The FP‑UBC2 is the ideal choice for connectorized conversion from unbalanced to balanced audio. Apr 25, 2025 · The unbalanced to balance converter board designed by fever-level DRV134 chip, can match the differential input power amplifier board, also can be used as a two-channel amplifier board to BTL output. The Right Way to Balance Unbalanced Signals. Module unbalanced to balanced symetrizer JRC 4580DD BTL stereo This audio module balances any HIFI-RCA-CINCH line-level asymmetric signal into a balanced-XLR signal independently and qualitatively. *Dual Channel Functionality:When only a DRV134 is inserted, the converter operates as a single channel. Seamlessly translating RCA signals into XLR, this module opens up a realm of connectivity possibilities. The chip can offer a distortion as low as 0. 60 $ 11 . Maximum swing can be 18Vrms at 0. Cinemag CMLI-600/600Chttps://cinemag. Apr 29, 2022 · Based on my understanding of balanced signals, if we take the difference between the signals carried on XLR, and output unbalanced signal referenced to the subwoofer ground, the hum will be removed. If you work with multimedia, you often end up having to integrate unbalanced consumer audio sources into your pro projects. The original NE5532 chip is designed for non-balanced to balanced board, single power input, can be used to match the differential input (balanced input) of the power amplifier board can also be used as a two-channel amplifier board to change the BTL output. ) Feb 16, 2020 · If I connect a mono/unbalanced TS (tip-sleeve) 1/4 inch to RCA jack converter to the balanced mixer output, the negative/cold signal will be shorted to the sleeve (ground). I’d like to convert this to balanced line-level at the P-16 to combat any line loss. The RB-UL1 is a single stereo unit for interfacing domestic or semi-professional unbalanced equipment, such as a CD player, to professional balanced line levels. I would like to avoid transformers There are three ways to get from RCA (unbalanced) to XLR (balanced) (1) Use an RCA to XLR adapter With an RCA to XLR adapter, you break the balanced input on your amplifier or pre-amp because 1/2 of the XLR input is shorted to the RCA’s shield. Apr 7, 2021 · Hello everybody, I'm now working on another power amplifier and I want it to have balanced inputs along with unbalanced ones. Copy and paste. As is often said, the beauty and joy of technical standards is that there are so many to choose from! Jul 4, 2021 · Connection of a stereo balanced line input via 2 x female XLRs to a stereo unbalanced output on RCA connectors. unbalanced to balanced shouldn't cause issues unless you're running long cables - and even then it's more about interference (like hums and buzzes) than actually affecting the sound quality. The output signal is still unbalanced, even when the headphone is connected in a 4-wire "balanced" configuration. 1 Analog signals Balanced lines, due to their differential nature, are less prone now I’m very happy with my new full balanced Beta22 with my DAC (full balanced too). 35mm mono jacks, and are isolated from each other. Converter Bare PCB Board Low distortion. Another case of mixing balanced and unbalanced audio connections is using a TS unbalanced plug to a TRS balanced jack. Introduction to Balun Theory and Balanced and Unbalanced Systems. Balanced to unbalanced audio using 1:1 transformer. This add-on board is designed to provide a pair of balanced audio outputs for the High-Quality Stereo DAC (Digital to Analog Converter). An unbalanced (coaxial) line has significantly different voltage from each conductor to ground. one possibility involves going out from the unbalanced !/4 inch inserts of my mixing board into the balanced 1/4 inch inputs of my a/d converter. Supply +/-12V to +/-15V DC @ 40mA Nov 12, 2020 · Advancing somewhat by inculcating some simple active circuitry would also be apropos. But I ask to to you if it can be a good quality solution. 00 shipping. Gold-plated phono jacks are used for each unbalanced input channel; each balanced channel is connected through an XLR jack. "The ZBIT is a unique balanced XLR to RCA converter that gives you a variable output level up to the full voltage of your balanced source! Imagine connecting the balanced output from your DAC to a ZBIT and getting a fully adjustable output of up to 7 Volts! DRV134PA Unbalanced to Balanced Output Stereo Converter Board Low distortion Dual channel for HIFI power Amplifier Converter Board. If that makes any sense at all . Level (Gain) Control — Independent L & R adjustment while transcoding for both balanced to unbalanced conversion and unbalanced to balanced conversion. SO WHY BOTHER? So long as the signal level is good, many people would be quite happy to connect an unbalanced output to a balanced input using a cable that connects the pole carrying the 180° out-of-phase signal, to 0V. The RCA output signal is unbalanced, but with most installations using typical length cables, and with the monitors powered from the same power strip as the source device (your Traktor Kontrol Z1 mixer/interface), there will be little likelihood of a ground loop being produced. It is in no way comprehensive or complete. The project work with +/-15V dual DC supply and draw approximately 100 mA. 96 volt with 2k in impedance from the tda7439 sound processor, I attach the scematics i planning to build. I'm not the biggest fan of pioneer gear sound quality - but it shouldn't be that bad. pdfTo buy Cinemag transformers - Oct 7, 2007 · Further to why going balanced to unbalanced is not an issue on the majority of balanced outputs is because, once again, You lose half your signal going the other way. Jan 20, 2007 · i'm setting up my home studio, trying to figure out how to route everything. Oct 12, 2022 · I have a preamp with unbalanced outs which I need to connect to a stereo power amp that has balanced ins. You either have a conversion module with op amp, or go through signal conversion transformers. https://www Besides performing the conversion from balanced to unbalanced, the circuit provides a little gain (usually, about 1. Apr 27, 2025 · The unbalanced to balance converter board designed by fever-level DRV134 chip, can match the differential input power amplifier board, also can be used as a two-channel amplifier board to BTL output. 001% in the whole audio frequency band( below 18KHz) when driving 600ohm load ! Mar 26, 2018 · most of the modern high end DAC chips have 2Vrms balanced outputs (+1V -1V) most of the nice sounding pass amps (M2 F3 F4 F6 ZV9) have unbalanced input To connect them together I need a preamp or converter (unity gain) to go from balanced to unbalanced. Jan 6, 2025 · Now that we’ve explored the differences between balanced and unbalanced connections, let’s examine the possibilities and limitations of plugging unbalanced into balanced. I simulated the schematic of converter, and here are the results: Apr 3, 2025 · Converter Board Low distortion DRV134PA. Hi i have been following this thread with interest because in in my case i have just got hold of a Tascam PE-40 EQ which has only rca connectors which are unbalanced Apr 29, 2020 · Just to add, RCA to balanced is exactly as Solderdude describes. Conventional DIs are not the right tool, since they drop the signal to mic level. Feb 14, 2025 · The unbalanced to balance converter board designed by fever-level DRV134 chip, can match the differential input power amplifier board, also can be used as a two-channel amplifier board to BTL output. 0005% at 1KHz and 0. Thanks Jul 18, 2015 · I planning to make a new prosject and I just want to confirm the impedance and construction of the converter from unbalanced to balanced audio. For unbalanced inputs, if the unused input is left floating (not recommended as it will pick up some noise), the gain is 0. Mar 25, 2025 · The unbalanced to balance converter board designed by fever-level DRV134 chip, can match the differential input power amplifier board, also can be used as a two-channel amplifier board to BTL output. Equipped with quality passive components, the asymmetric input signal is processed by an JRC 4580DD per side on DIP 8 support. This conversion is necessary in audio systems, where balanced signals are preferred for their improved noise rejection and increased signal integrity over long distances. stereo to mono combining. Feb 19, 2023 · The schematic you've shared appears to be a differential amplifier with balanced inputs, which is a common design for low-noise applications. When I was looking for some information how to convert unbalanced audio signal to balanced, it was hard to find info other than "use transformer" or "buy X device to do this". 52dB) at each output, an overall gain of 1. I have seen a solution using the DRV134PA ic. I'm used on building more guitar pedal circuits but lately I've started working more on "xlr balanced " circuits. To keep costs down, that would need to be an active device, not a passive transformer, I use the Behringer DI120 and an external 9v power supply, and whilst not the best, it's quite good enough at line level. This is the PCB of a very low distortion balanced lined driver. Inputs are 10kHz bridging (–10dBv nom. Then I found this circuit: Jul 9, 2020 · Figure 1: Unbalanced to balanced circuit conversion (left) and balanced to unbalanced conversion (right). Was: C $19. Simple balanced to unbalanced audio converter box DIY. The conversion itself is actually simple: You have the hot conductor (like center pin for RCA, or T or R for TRS) and the shield conductor (RCA shell). Enter the Soul Drive, which utilizes a Burr Brown DRV134 chip to do the unbalanced to balanced conversion. Brand New. Passive device providing studio quality transformer isolation. Conversion Board, Dual Channel Unbalanced To Balanced Stereo Converter Board for Shopping Mall for Home Theater for Speaker $11. 04. 19Vrms (measured at 1kHz with volume control set to max). In any case, for short cable runs such as the OP describes, balanced connections are not crucial. Mar 10, 2013 · Hi guys quick question please . For further information please reference the following links: Mar 29, 2016 · In unbalanced mode, the "hot side" amps handle the input signals and the "cold side" amp inputs are connected to ground. RB-UL2 Dual Stereo Unbalanced to Balanced Converter. Make one op amp your gain stage and feed the inverting input of the second op amp (configured for unity gain). Has adjustable gain up to +15dB per channel. They want to feed the power amplifier for their stage monitors from a p16 mixer that only has unbalanced line outs. The project can be used as balance to unbalance converter with on board audio level adjust potentiometer. 72'' X 3. Surely some of these options must be better than others: - XLR -> RCA cable - XLR -> passive converter box -> RCA - XLR -> active converter box -> RCA Jun 25, 2023 · The key point for any cable that converts unbalanced to balanced is that this conversion to balanced must happen directly at the source end. The Extron ASA 141 Audio Summing Adapter is a convenient, single-cable solution for combining two-channel stereo audio into a balanced or unbalanced mono audio signal. It istransformer balanced, with a 1:2 ratio, so 6dB of gain is added to the input to help interface with the higher signal levels associated with professional outputs. The DVA R2X is a single-ended to differential converter (i. Aug 28, 2022 · A little OpAmp circuit to turn an unbalanced signal into a balanced one. Aug 13, 2022 · The "Sound System Interconnecion" Rane note is a well-known reference on this topic. e. One way to plug an unbalanced device into a balanced system is to use an adapter or converter. Screen: - At the unbalanced input, connect the screen wire to the input ground pin. Ferrite Beads at input signals to reduce the RFI/EMI noise. You should find the answers to your questions there. com FREE DELIVERY possible on eligible purchases Buy RDL 6-Channel Unbalanced to Balanced Audio Converter featuring Audio Converter with Connectors, Consumer to Professional Format, Well Suited to 6-Channel Surround Format, Gain Trim on Every Channel, Gold-Plated RCA Input Jacks, XLR Outputs with Gold-Plated Pins, Low-Noise and Low-Distortion Conversion, Cabinet, Shelf or Rack Mounting, Convenient RDL FLAT PAK Format. Stereo Balanced to Unbalanced Audio Converter – Aug 17, 2021 · Not all balanced outputs are designed to be connected to unbalanced inputs. Jun 18, 2015 · Connect with a pair of RCA to 1/4-inch TS cables or the pair of RCA to XLR(M) cables in your link. 775Vrms Output level: 0. Two 3-pin male XLR connectors are used for the new outputs and they can either replace or augment the existing unbalanced outputs without affecting their performance. Connectors — Terminal blocks (balanced & unbalanced). Oct 29, 2018 · This guide will hopefully demystify interconnection of balanced and unbalanced audio devices, specifically balanced outputs to unbalanced inputs. I could use 1/4" to XLR Apr 29, 2025 · The unbalanced to balance converter board designed by fever-level DRV134 chip, can match the differential input power amplifier board, also can be used as a two-channel amplifier board to BTL output. I did several balanced input preamps and amps with the "classic" one op-amp and three op-amps designs but I was looking for a higher performance solution (if there is Apr 22, 2018 · Only if that doesn't work either would it be advisable to use a balanced cable and some sort of unbalance-balanced converter. The RB-UL2 is a dual stereo unit for interfacing domestic or semi-professional unbalanced equipment to professional balanced line levels. The two RCA unbalanced inputs have an impedance of 10kΩ and are routed to two balanced XLR-3 outputs with an output impedance of Dec 5, 2013 · The Sescom SES-AUD-XLR-RCA 1-Channel XLR to RCA Balanced to Unbalanced Audio Converter is a single channel balanced to unbalanced audio converter. Two RCA inputs and a stereo mini-phone jack are connected in parallel, while the balanced output feeds two XLR male jacks. It could be fully floating or centre tapped. com FREE DELIVERY possible on eligible purchases Jun 27, 2020 · The transformer presents a balanced load to the ADI-2 output, there are no issues. . Using a 600:600 ohm transformer is the most common. Features. When using such adapters, my experience is that balanced to unbalanced works pretty well, while unbalanced to balanced often considerably degrades the sound. 54mm output. RCA in balanced and unbalanced is like having a swiss army knife for connecting to a house PA. Dec 7, 2021 · This is an assembled board of a very low distortion preamplifier ( Gain = 2) that can convert an unbalanced signal to a balanced signal. That might be preferable to adding more stuff. or Best Offer But if you only have unbalanced RCA on your deck, getting a cheap unpowered mixer (I have 2 6 channel yamahas I got used around $70) that has various flavors of XLR, 1/4". You might want a passive DI box here: an active one will always require a battery or power supply in this direction. The Extron BUC 202 is a two channel balanced and unbalanced audio converter, and audio line driver. 01'' X Feb 4, 2012 · I using unbalanced/balanced converters with my circuits like microphone preamplifiers and headphone amp because the used chips (INA217 and TPA6120) have symmetrical balanced inputs. The circuit includes D1 power LED, Ferrite beads L1, L2 on the supply line to provide noise immunity. Dec 25, 2020 · If it’s a fixed installation where the gear won’t change positions you might be able to get away with neither. The other side is configured for Single Ended output. This enables you to take the balanced output of a mixer and feed a consumer level recorder or audio input on a computer. The output is compatible with consumer balanced inputs too, which is important because some units are designed to go into the mic inputs on a mixing board. This is very important, the sound and the dynamics are much better with this solution. Using RCA male to XLR male cables will obviously be unbalanced meaning that the amp all be fed a lower voltage which results in attenuation. Multi-turn gain trimmers and Dual-LED VU meters […] Mar 21, 2012 · Performance is especially poor when cables are long, since the entire interface is unbalanced, allowing both audio and ground noise to flow in the cable shield. Aug 1, 2018 · Hi everyone. Application : This can be used either as a converter board for preamplifier or power amplifier that has balanced input, or it can be used as a balanced line driver for driving long cable to an audio equipment Audio transformer that converts balanced line inputs to unbalanced outputs. RCA to XLR Converter Module: The RCA to XLR Converter Module is the key to bridging the gap between audio systems. Voila, whisper quiet. com/project/stereo-balanced-to-unbalanced-audio-converter/ Apr 25, 2025 · The unbalanced to balance converter board designed by fever-level DRV134 chip, can match the differential input power amplifier board, also can be used as a two-channel amplifier board to BTL output. Unbalanced To Balanced Converter XLR-RCA / A2516 NEW. The loss of the volt is not a problem for an unbalanced input that does not want that volt anyway. DRV134 2 Channel Unbalanced to Balanced Converter Board Match Input Amplifier | eBay Apr 22, 2025 · The original NE5532 chip is designed for non-balanced to balanced board, single power input, can be used to match the differential input (balanced input) of the power amplifier board can also be used as a two-channel amplifier board to change the BTL output. Oct 8, 2021 · Buy Dual-Channel Amplifiers,Converter Board DRV134PA Unbalanced to Balanced Low Distortion Dual Channel Stereo Conversion Board: Amplifiers - Amazon. or Best Offer +$3. Why use an active converter? There are three ways to get from RCA (unbalanced) to XLR (balanced) (1) Use an RCA to XLR adapter May 15, 2022 · To be more concrete, the chain I'm considering is SOURCE -> XLR -> PASSIVE CONVERTER -> RCA -> AMP, and the XLR cable run will be 20+ feet long, so there's a legit risk of picking up undesired noise. Usually they are used to convert a piece (or more) of unbalanced gear (RCA -or- 1/4") gear to balanced gear (usually XLR) so only one is needed most times. Balanced audio to unbalanced converter This project was inspired by the "BEHRINGER POWERPLAY P2" we needed a bunch of similar devices, so I started developing a circuit and a board. This is Bare PCB, not included any other electric components. 5dB). Apr 1, 2025 · Unbalanced to Balanced Dual Channel Stereo. 01% distortion! Unbalanced to Balanced Dual Channel Stereo. s that make these,but the thing is to use it the way you wanna use it you'll need one of 'em @ both ends. So what may have been 2 volt now becomes only 1 volt. Mar 8, 2024 · To convert a balanced signal to an unbalanced input. If the transformer can be installed inside the "pro" equipment, the resulting balanced input will give outstanding CMRR performance from either balanced or unbalanced (using the adapter cable) sources. Jul 12, 2021 · It is unfortunate the Bill Whitlock calls this circuit a 'balanced output' because it is actually a single ended output with equal impedance to ground on both + & - legs. The Rane Balance Buddy seemed to be the best one for doing a true conversion from unbalanced to balanced. That's the right way to do it, and from now on I'll be very careful not to "convert" balanced to unbalanced the wrong way with adapters or using TRS for TS inputs. That is the beauty of the transformer which transforms Balance to SE while satisfying the load / source requirements for each. Equipped with passive quality components, the unbalanced input signal is processed by a DRV134 PDO per side. Housed in an anodized aluminum enclosure with Neutrik chassis mount XLR and a recessed Neutrik RCA that you can hide in your hand, this converter requires no power. 6dB) and exhibits an exemplary CMRR (Common Mode Rejection Ratio), which means that it largely ignores common-mode signals, i. The LM4562 op-amp is known for its high performance, so it should be a good choice for this application. The - leg stays at ground potential and does not swing in voltage that mirrors the + leg. 5mm TRS I/O, Dedicated Level Controls, Active Circuitry, Includes PS24 Power Supply. DIY Jun 14, 2019 · There are three ways to get from RCA (unbalanced) to XLR (balanced) (1) Use an RCA to XLR adapter (this is what you have linked to above) With an RCA to XLR adapter, you break the balanced input on your amplifier or pre-amp because 1/2 of the XLR input is shorted to the RCA’s shield. Review Sonifex CM-ULX1 Mar 6, 2025 · Unbalanced to Balanced Dual Channel Stereo. Because the jack is balanced, this will not make the audio balanced and will result in an unbalanced connection. I did this using a 5532 op amp (balanced supplies). The input stage is operated unbalanced by grounding its ! input and driving its + input with the transformers’ output. C $18. For this reason, the outputs of professional audio equipment such as mixers are balanced. It can convert an unbalanced input to balanced outputs and vice versa. Say goodbye to unbalanced AV receiver signals. 🙂 I have 3. It's the perfect solution for using single-ended preamps with differential (i. Apr 23, 2025 · The original NE5532 chip is designed for non-balanced to balanced board, single power input, can be used to match the differential input (balanced input) of the power amplifier board can also be used as a two-channel amplifier board to change the BTL output. Buy Sonifex CM-ULR1 Unbalanced RCA to Balanced XLR Audio Converter featuring Unbalanced RCA Input to 2 Male XLR, Passive Unit, Reduces Noise and Interference, Transformer Balanced. Jan 15, 2022 · I need to convert my pedal board's unbalanced output (1/4" stereo) to balanced Line-Level output (+ 4dBu, XLR) in order to connect directly to a line-level I/F to a Dante network. 28. Before tackling balun theory, it is important to understand the differences between balanced and unbalanced two-terminal sources and loads. When dealing with unbalanced sound sources, for example DJ consoles or semi-professional equipment, one could face the issue of connecting an unbalanced RCA output to an XLR input, like the ones found in Powersoft amplifiers. If I have a pre amp with xlr connections and power amp with xlr but the cd only has phono . This module features two identical channels. With a 1V balanced input, each output provides 1V, so when used as a balanced to unbalanced converter, the gain is unity. 33 (2. 7 or +4. Rolls MB15 ProMatch - Affordable 8-channel impedance matcher and converter. If the output of the previous device is impedance balanced there is no compromise. We needed: devices with balanced input and unbalanced output to headphones with unipolar power +12 or +18 volts Jul 12, 2022 · DKARDU DRV134 Audio Balanced Line Drive Dual Power Supply Unbalanced to Balanced Board Differential Output Amplifier,with Cable 1 offer from $999 $ 9 99 Triad Magnetics TY-145P Audio Transformer, Through Hole, 600 Ohms There are several methods of using transformers to go from balanced to unbalanced or vice versa. See, for example, Figure 6-30 on page 458. Opens in a new window or tab. unbalanced 1. A balanced signal uses two separate wires, with the same signal 180° inverted. It is ideal for summing stereo signals for use in mono PA systems in churches, halls, arenas, stadiums, and other environments where stereo signals would result in cancellation. I will have both fully assembled and bare boards available. TX-LC2 Audio Combiner (Unbalanced to Balanced) For use when active, isolated mixing of two unbalanced line level audio sources to feed a balanced (or unbalanced) audio output, with common gain control, is required, eg. in-phase signal shared between the balanced pair of signals, such has in-phase hum Aug 16, 2023 · Stereo Unbalanced to Balanced Audio Converter DRV134PA Dual-Channel PCB Board This is the PCB of a very low distortion preamplifier(Gain=2) that can convert an It appears, at first glance at least, that one of the "balanced line receiver" types of stages could simply be added after the unbalanced-to-balanced converter, to improve the CMR. A balun / ˈ b æ l ʌ n / (from "balanced to unbalanced", originally, but now derived from "balancing unit") [1] is an electrical device that allows balanced and unbalanced lines to be interfaced without disturbing the impedance arrangement of either line. DRV134PA. RB-UL1 Single Stereo Unbalanced to Balanced Converter. Sep 1, 2014 · Remember that almost all pro audio gear is unbalanced internally, so it's highly likely that the unbalanced input on your speaker has a more direct path than the balanced input. It enables you to connect, for example, a hi-fi amplifier to a balanced output. How would I wir Apr 29, 2025 · 1 x NE5532 Unbalanced to Balance board. LM2B 2-Channel Unbalanced to Balanced Line Level Converter, 20Hz-20kHz Frequency Response, 100Ohms Balanced Output Impedance Feb 17, 2020 · It converts a +4dBu unbalanced signal to a +4dBu balanced signal (no gain). Mar 23, 2025 · The AD828 chip is designed for non-balanced to balanced board, single power input, can be used to match the differential input (balanced input) of the power amplifier board can also be used as a two-channel amplifier board to change the BTL output. Is there a way to fool the amp into thinking the cd input is an xlr ie phono cd end xlr on the other end . Balanced to RCA can be harder as it depends on what type of balanced output it is. Balanced-Unbalanced Converter For Audio Work If you work in the professional audio field, you need to use balanced lines for long signal runs to prevent hum and noise pick-up. - At the balanced output, connect the screen wire to the screen pin (XLR pin 1). 67 (-3. So I would like to know a bit more on what modifications should be made on an unbalanced in-out 9v circuit (for example a simple ross compressor guitar pedal project) to be transformed to a balanced in-out one. 18 6% off. ) on 6. Usually the "-" signal is grounded on the unbalanced side and some outputs shouldn't be shorted to ground. The circuit mke uses of a famous balanced line receiver DRV134PA per channel. , balanced) power amplifiers, including our own. Balanced 600 Ohm 3 pin female XLR to unbalanced 10K Ohm 2 x RCA with level control (or optional screw terminal connections). I will connect this preamp i building to a Dynamic Presicion amp. If you work in the professional audio field, you need to use balanced lines for long signal runs to prevent hum and noise pick-up. (Gain=2) that can convert an unbalanced signal to a balanced signal. A second input is also available in RCA format, with a switch to simply select the active input. It should be called a simple unbalanced to balanced interface. Usually it's OK but it depends on the design of the preamp. May 23, 2018 · Function 2: convert signal from balanced XLR to unbalanced RCA or from RCA to XLR ; SOLUPEAK 3-Way XLR Stereo Audio Switch Box, Balanced Audio Converter, Passive Nov 22, 2014 · Hey guys, I'm trying to make a cable to run from my PC (1/8' unbalanced stereo output) to a mixer (1/4' balanced mono input). XLR to XLR on the balanced side of the transformer. Balanced line level is +4dB. Apr 30, 2025 · ART CLEANBoxPro 2-channel Level Converter Features at a Glance: Provides two channels of level conversion Does unbalanced to balanced and balanced to unbalanced XLR connectors for balanced inputs and outputs RCA phono jacks and stereo 1/8" jacks for unbalanced inputs and outputs Unbalanced output level control Balanced output level control Schematic, PCB Layouthttps://www. It's used in RF, and profe Mar 14, 2025 · The PCB has a board thickness of 1. Staying in the universe of audio, our project in these pages is an elegantly straightforward unbalanced-to-balanced audio converter. A far better hookup shown in Figure 2 uses shielded twisted-pair cable to take advantage of the noise rejection available from the balanced input stage. CM-ULX1 Unbalanced to Balanced Audio Converter This product allows the connection of a stereo unbalanced line input on phono connectors to a balanced line output via 2 x male XLRs. Take the outputs of both op amps for your output. Can provide up to +10dB gain adjustment. The Fredenstein F606 is a high-performance 2-channel unbalanced-to-balanced audio converter with variable gain. Doyle M&K S150THX LCR, SS150THX Tripoles, 4 Speakercraft Aim-7 for Atmos The RDL FP-UBC2 2-Channel Unbalanced to Balanced Converter is the ideal choice for connectorized conversion from unbalanced to balanced audio. Feb 20, 2025 · - At the balanced end, connect the hot wire to the hot pin (XLR pin 2), and the cold wire – when it’s a hard balanced output - connect it to the shield pin (XLR pin 1). Feb 4, 2011 · Standard line level for unbalanced is about -10dB. Instructions; Frequency response: 20 Hz - 20kHz +/- 3dB Input level: 0. I know that the simplest way to convert balanced to unbalanced is to short the negative/cold signal of a balanced to ground, BUT Dec 21, 2021 · Buy Amplifier Board, Conversion Board, Channel Unbalanced To Balanced Stereo Converter Board for Shopping Mall for Home Theater for Speaker: Dual-Channel Amplifiers - Amazon. Generally speaking, unbalanced output to balanced input (quite common when combining a consumer DAC with professional active speakers) can be made to work, although you might have to mess with the ground connection to avoid noisy ground loops. Model Number. The difference between ideally operating unbalanced and balanced lines lies in system voltages, rather than currents. It accepts unbalanced input and convert the signal to a balanced output. May 25, 2010 · Although a lot of people would object to this method, after the release of the Protector, we can definitely see that the improvements gained from having balanced drive is very noticeable even from if you have an unbalanced source. -DRV 134 balanced module-This audio module makes it possible to symmetricate all unbalanced HIFI-RCA-CINCH line level signals into balanced XLR signals independently and qualitatively. Convert two channels of consumer-level unbalanced input signals into pro line-level balanced output signals quickly and easily with the CLEANBox Pro. This type of signal transmission is usually associated with the professional audio or PA systems. Converter Bare PCB Low distortion. Feb 7, 2025 · The original NE5532 chip is designed for non-balanced to balanced board, single power input, can be used to match the differential input (balanced input) of the power amplifier board can also be used as a two-channel amplifier board to change the BTL output. Balance is referenced to voltage, not current, in an ideal system. So you should need a gain of 14dB. Fully Assembled boards: 150 to 180 USD + shipping depending on interest Bare boards: 12 to 18 USD + shipping depending on interest, see BOM in attachments Apr 19, 2013 · This Balanced/Unbalanced Converter is really two projects in one. The circuitry shown here is used to convert a balanced audio signal into an unbalanced one. Review RDL FP-UBC The Radial J-Iso™ and Pro-Iso™ are stereo line isolators designed to convert a professional +4dB line level balanced signal to an unbalanced -10dB consumer level device. Four RCA unbalanced inputs have an impedance of 10kΩ and are routed to four balanced XLR-3 outputs with an output Apr 29, 2005 · I would venture to guess that 90% of the people on this board run unbalanced lines for their line level interconnects. Oct 10, 2021 · Both of these methods are quite different from simple RCA to XLR adapters (or vice versa). Connection of a stereo balanced line input via 2 x female XLRs to a stereo unbalanced output on RCA connectors. Board has separate screw terminal for Euro balance audio signal input connector. It is a widely spread common “knowledge” that balanced signals sound “worse”. Mar 5, 2017 · There are quite a few co. All connections are on the rear panel. 60 5% coupon applied Save 5% with coupon The ST-UBA2 Two Channel Unbalanced to Balanced Amplifier is used in applications where unbalanced consumer level signals must be converted for operation in a professional +4dBu environment. DRV134 2 Channel Unbalanced to Balanced Converter Board Match Input Amplifier. Depending on the design of the balanced input, this can have multiple undesirable effects. electronics-lab. Using An Adapter Or Converter. Aug 23, 2018 · I have read a hundred times that you can wire pseudo balanced connections, but I also read on a reliable document, that the next best thing to keeping everything balanced is to make any unbalanced output balanced by a transformer close to the source (and vice versa for the returns). Specifications: High quality low noise Balance to unbalanced converter designed around op-amps. The 10,000-ohm resistor provides This pair of modules converts a balanced signal on XLR input to an unbalanced signal on XH 2. Apr 17, 2025 · Unbalanced to Balanced Dual Channel Stereo. . In a perfectly working unbalanced (coaxial) line, the amount of Buy Whirlwind LM2B 2-Channel Line Level Converter featuring Converts Consumer Line to Pro Line Level, -10 dB to +4 dB, Unbalanced to Balanced, XLR, RCA, and 3. Nov 22, 2023 · Radial Engineering J48 MKII - An 8-channel active direct box that can convert back and forth between balanced and unbalanced signals. Aug 24, 2018 · All, I have designed a stereo RCA (single-ended) to XLR (balanced) converter. $4. 6mm, and copper thickness of 70um. wdhkzgcaogwwnrzfzlmgrjrxgnwvacfynjijygevyejprhnlai