VC23, my new PGA2310 project - Page 12 - diyAudio
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Old 31st March 2012, 01:24 PM   #111
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Location: Netherlands
Thanks for your suggestion. Do you mean the side of C14 and C15 that is connected to the relays (other side is already grounded through R18 and R10). It does not seem to make much of a difference.

Still the noise above the volume setting 8 (about the 0dB point for PGA2310 I assume) is much more than the PGA2311 board I have.

Is it possible to remove the OP stage, as I do not need the additional 3x amplification? can you share the schematic of the board?

Thanks,

Maarten
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Old 2nd April 2012, 02:39 PM   #112
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Hi, I suggest keep the OP because the input impedance of PGA2310 is not big, so a buffer is always needed. If you can, keep the R7=R11 and R9=R14, then the OPs will become a buffer with gain=1.
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Old 19th September 2012, 12:59 PM   #113
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Hi, very good projects...hifimediy!
if i want to use the Vc43 in my 7.1 setup between multichannel analog DAC output and analog input of my final power amp (4*stereo) is this board useful?
May i change with remote the volume of all channel simultaneously for setting main volume?

If i want to use this with balanced xlr signal may i use one for 4channel and another for other 4channel?

Thanks!
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Old 19th September 2012, 02:11 PM   #114
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Quote:
Originally Posted by luckyaua View Post
Hi, very good projects...hifimediy!
if i want to use the Vc43 in my 7.1 setup between multichannel analog DAC output and analog input of my final power amp (4*stereo) is this board useful?
May i change with remote the volume of all channel simultaneously for setting main volume?

If i want to use this with balanced xlr signal may i use one for 4channel and another for other 4channel?

Thanks!
Hi, yes it's ok for 7.1, and you can control all channel's volume by setting main value. And it's 4ch/board when xlr using.
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Old 19th September 2012, 02:15 PM   #115
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Thanks for answer..
Quote:
and you can control all channel's volume by setting main value
so there is ch.1..8 volume and main volume?
So i may set different levels for single channel and then setting main volume like AV receiver? or there is a main volume that set the same leve for all channel?
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Old 19th September 2012, 02:38 PM   #116
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Hi, you also can set 4 groups of volume: 1&5, 2&6, 3&7 and 4&8 individually.
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Old 19th September 2012, 02:40 PM   #117
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please...can you explain me all the volume possibility?
Thankx
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Old 19th September 2012, 03:03 PM   #118
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the options if i've understand all...are:
-volume Ch 1-2-3-4-5-6-7-8 separately
-volume Ch 1+2+3+4+5+6+7+8 togheter
-volume Ch 1&5 or 2&6 or 3&7 or 4&8 by twin

so ...is possible after i've setting different starting values for single channel for example:
1&5 -20db
2&6 -15db
3&7 -18db
4&8 -15db
to upper main volume of 5 db for all so after i've at the end:
1&5 -25db
2&6 -20db
3&7 -23db
4&8 -20db ?

or i can only by main volume setting for example -25db for all channels?

Last edited by luckyaua; 19th September 2012 at 03:07 PM.
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Old 20th September 2012, 03:18 AM   #119
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1&5 -20db
2&6 -15db
3&7 -18db
4&8 -15db
to upper main volume of 5 db for all so after i've at the end:
1&5 -25db
2&6 -20db
3&7 -23db
4&8 -20db
It's right.
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Old 20th September 2012, 08:34 AM   #120
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...ok
if i use 2 boards for 8ch balanced in/out i must use 2 display and 2 remote controller or i can use one only remote and/or one display.

Excuse me for questions...but i wonna be sure that this board is useful for me!
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