Balanced vs. differential amplification

[@ghabarknemisis5047]

very well explained. i have been trying to understand this concept for a long time and understood finally from this video! thanks!

[@InsideOfMyOwnMind]

That was a fair and balanced explanation.

[@sean_heisler]

I want to like your comment...but I simply can’t.

[@InsideOfMyOwnMind]

@@sean_heisler I get it. It's all good. I didn't expect Paul's crowd to give me a thousand likes

[@NickP333]

I enjoyed both of your comments and got a chuckle outta both. At least you guys were civil to to one another. 👍🎶🙂

[@hugobloemers4425]

@@InsideOfMyOwnMind LOL, that gets my up-vote ;)

[@jamesplotkin4674]

Saw what ya did there ;-)

[@Novilicious]

Such a great explanation Paul…thanks!

[@janinapalmer8368]

I did see somewhere the circuit configuration of a BHK 250 and I noted it uses a fully balanced symmetrical drive throughout ... which is by far the best way to go ..

[@janinapalmer8368]

If you do use long RCA type unbalanced cables then use high quality low capacitance cable with multi strand copper conductors

[@hugobloemers4425]

Put a transformer on any input or output and it becomes a balanced input or output (unless you then ground the secondary winding) but it will not become a differential input or output amplifier (if it was not already).

[@janinapalmer8368]

Yuk ! In theory you are right but I do hate coupling transformers

[@dandonna852]

So, that is differentance of XPA-DR1 Differential Reference Monoblock and XPA HC-1 High Current Monoblock Amplifier from Emotiva

[@stonefree1911]

Balanced all day long. Great picture!

[@jonathanmatthew5631]

So what is the advantage or benefit of a Balanced XLR if the amplifier is not a differential amplifier?

[@jonathanmatthew5631]

any update on this?

[@xmaxsi]

@@jonathanmatthew5631 basically the xlr will remove the ground noise from anything, only if the 2 sides (example an amp and a dac) are balanced, because it needs the differential amplifier por it to process the balanced signal. One thing you can do is make your amplifier balanced like paul says in this video, puting a diferencial amplifier in the inputs of your amplifier. but its a little technical and DIY thing to do.

[@mikebeacom4883]

It allows you to run a long - maybe several hundred feet -cable run between the source and the amp. That can be a problem in pro audio, where mic runs between the studio and control rooms can be pretty distant. Or in a live sound situation where the amps and speakers are far from the mixer.

[@rodrogers7553]

Love that shot of The Beatles!!

[@tyronenelson9124]

So in other words for example, a stereo differential class d amplifier has to have at least 4 channels in btl mode, in order for the audio signal to be sent via 2 of the channels and returned via the other 2 remaining channels without using the system ground whatsoever, so any noise present on the system ground will be ignored?

[@helmanfrow]

Your explanation conflicts with the explanations given in the Wikipedia entries for 'Balanced audio' and 'Differential signaling'. I quote: "" Contrary to popular belief, differential signalling does not affect noise cancellation. Balanced lines with differential receivers will reject noise regardless of whether the signal is differential or single-ended,[1][2] but since balanced line noise rejection requires a differential receiver anyway, differential signalling is often used on balanced lines. Some of the benefits of differential signalling include: Doubled signal voltage between the differential pair (compared to a single-ended signal of the same nominal level), giving 6 dB extra headroom.[1] Common-mode noise between the two amps (e.g. from imperfect power supply rejection) is easily rejected by a differential receiver. Longer cable runs are possible due to this increased noise immunity and 6 dB extra headroom. At higher frequencies, the output impedance of the output amplifier can change, resulting in a small imbalance. When driven in differential mode by two identical amplifiers, this impedance change will be the same for both lines, and thus cancelled out.[1] ""

[@sebastianbachert9528]

Love the Beatles portrait!

[@alanaban3519]

What do an amplifer put out ac r dc currant

[@adsfghyy69]

Running balanced audio through all channels except powered subwoofers using unbalanced rca does this affect sound?

[@donpayne1040]

Dope.

[@vighneshtechtips1424]

Hi sir u have not answered my question yet

[@Paulmcgowanpsaudio]

I am sorry, which question?

[@vighneshtechtips1424]

@@Paulmcgowanpsaudio Do class D amplifiers work heavy and clear than other grade amplifiers ? Hi Paul i am vighnesh mandalika from india. I got this doubt by seeing svs pb 16 ultra subwoofer it is a class d amplifier based subwoofer.I request that u clarify my doubt as early as possible. I like ur answers on many questions I got a extreme level knowledge from ur answers and the subject u share is very vaulable to us .please continue ur videos and share ur knowledge.

[@madcrabber1113]

@@vighneshtechtips1424 ?

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[@ThinkingBetter]

RCA cables have created a lot of misery for audiophiles throughout history.

[@janinapalmer8368]

Not really true ... RCA connections are quite ok for short ( less than 1 metre) runs. Balanced is only better for longer runs

[@ThinkingBetter]

@@janinapalmer8368 Agree with you, but my point is still also right. I've had some bad experiences with long RCA cables. I didn't say "only misery". I'm still using RCA cables in some setups with no issues and shorter cables are always better no matter type.