EV Q99 Gain Indicator Question: Calling Ben

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jokerswild

jokerswild

Chief Bottle Washer
Feb 11, 2007
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Ben may be the one to answer this question.

When the Q99 is set to Parallel mode as I understand it, the signal in feed to the amp through channel A, but gain control is still independant for channels A and B but that the input into A is directly linked to channel B. Why then when I turn the gain up on Channel A while leaving Channel B turned down does the indicator lights light up for both channels?

I checked and double checked, yes it is in Parallel mode, not Bridged and not Stereo (*Dual).

The reason I'm concerned is, if the gain controls still control each channel independantly shouldn't the indicator lights also work independantly?

I can't find any confirmation on how the indicators work in the manual which is why I'm asking here.
 
In parallel mode, what occurs with one channel is the same with the other channel. Its like when you are running lights in "Slave" mode. Parallel mode is usually used when a Mono signal coming in is split with a Y Connector and fed to both sides of an amp. In your case, I believe the amp splits the signal internally.
 
ahoustondj said:
In parallel mode, what occurs with one channel is the same with the other channel. Its like when you are running lights in "Slave" mode. Parallel mode is usually used when a Mono signal coming in is split with a Y Connector and fed to both sides of an amp. In your case, I believe the amp splits the signal internally.
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Well I'm not using a Y splitter.... Summed Mono Sub Out from DRPA to Channel A input on the Amp.... what I find curious is the manual indicates that Channel's A and B's Gain is controlled independantly but that the audio input is linked to channel A and B through the A input. So shouldn't the indicators be independant if the gains are?
 
Simple answer " No"
 
I see no sense in summing the Lows/Bass and then sending them to a parallel input in the amp. I would just leave the bass in stereo all the way or if I summed the bass signal I would then bridge the amp.
 
ahoustondj said:
I see no sense in summing the Lows/Bass and then sending them to a parallel input in the amp. I would just leave the bass in stereo all the way or if I summed the bass signal I would then bridge the amp.
Click to expand...

That's just how the DRPA does it in 2x3 Stereo... Highs go to left/right stereo and the Lows get summed for the sub with a single output.
 
jokerswild said:
That's just how the DRPA does it in 2x3 Stereo... Highs go to left/right stereo and the Lows get summed for the sub with a single output.
Click to expand...
I am sure you can change the settings to get left and right bass.
This is why I prefer this. View attachment 24640
 

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jokerswild said:
Why would I want or need the subs to be in stereo?
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Thats the way the artist recorded them.

If you have enough firepower you really don't need to have subs together or summed. Especially for you as I don't see your subs together.
The only time I place my subs together is when I am using two (Mine are each 16 ohms) so if I am running 8 ohms bridged I will place them together. I have adequate bass for any kind of Gig that I do using one, two or four bins.
 
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