XLR Balanced Output Question

[DJMaxG]

I'm obviously missing something here

One Master fader, 2 amps, 4 cabs.

Master > Amp 1 > Cabs
Master > Amp 2 > Cabs

The Master channel/fader has 2 sets of outputs, Balanced Jack and Phono.

[Excalibur]

I'm obviously missing something here, I thought we were talking about taking the output from a mixer, which is before it gets to the amp, so when people are saying that the volume is halved, exactly what volume is halved?

Are you then plugging 4 leads into a single amp and then expecting that amp to deliver the same level of sound to 4 speakers as it would have done to two?

Surely if you are taking 4 outs, you would send them to two different amps (or powered speakers)??????

JTRS

Ahem, cough, cough. For "People" read " Max". He's saying that if you plug two amps, four cabs in, then each amp gets " half the output".

[JTRS]

One Master fader, 2 amps, 4 cabs.

Master > Amp 1 > Cabs
Master > Amp 2 > Cabs

The Master channel/fader has 2 sets of outputs, Balanced Jack and Phono.

Yes that's what I thought we were talking about.

If you do it that way I fail to see how the volume level can be halved.

JTRS

[DJMaxG]

I only tested it once, and I am pretty sure that the volume level (going IN to the amplifiers) was halved. Its only science though, If you have one output fader set to a certain gain, and you connect another output device (amp) to it, then the sound has to be shared.

[Excalibur]

Yes that's what I thought we were talking about.

If you do it that way I fail to see how the volume level can be halved.

JTRS

Hallelujah, another one on my side.

[A1DL]

+1 on your side, Peter

I've just read this thread and some of the suggestions contained within it are ridiculous nonsense.

No doubt from the same school which teaches that sound is measured in watts, and one needs x amount of watts per person in a given space....

...leading to the $20m question...

What happens if ten more people enter the room? Does the music become quieter for those already in the room, or do those who've just entered hear nothing because "there's no more watts left"?

[JTRS]

I only tested it once, and I am pretty sure that the volume level (going IN to the amplifiers) was halved. Its only science though, If you have one output fader set to a certain gain, and you connect another output device (amp) to it, then the sound has to be shared.

How exactly did you measure the volume of the sound going in to the amplifiers?

Before it hits the amp it's line level!!!!!!!!!!!!!!!

Both output channels will send a line level signal to the amp, hence why it cannot possibly be halved



JTRS

[DJMaxG]

How exactly did you measure the volume of the sound going in to the amplifiers?

Before it hits the amp it's line level!!!!!!!!!!!!!!!

With My ears, of course.

Both output channels will send a line level signal to the amp, hence why it cannot possibly be halved

It still has a gain prior to being output, which is shared and halved. I have noticed (by listening with my ears) that the sound drops. It all depends how a mixer is wired up etc. It is similar to if you split a gutter in half.

JTRS,
once you have purchased the mixer in question and conducted a test, not guessed or taken it for granted, perhaps you will notice that there is a noticable difference in volume to the human ear. I may even test it again for the sake of this thread.

Tony,
Have you tested this scenario out before (both phono and balanced ran off from the same "Master" output), Has the sound dropped?

[Excalibur]

OK Max, you win. Folk like me who have thirty five years experience, and Tony who has knowledge far in excess of mine are obviously wrong.

[DJMaxG]

OK Max, you win. Folk like me who have thirty five years experience, and Tony who has knowledge far in excess of mine are obviously wrong.

Peter,
nobody said that anyone was wrong

We have different boards, and I have only tested by listening. I havent coducting any technical tests or anything scientific as such. When I had the both amps connected up, it was a while back.

I was just stating what I heard