FS: 6-channel volume control (DCX2496)

tf1216 · 10th July 2008, 12:56 PM

What I am trying to sell is a 6 channel balanced volume controller. It uses PGA2310 audio volume control IC's as well as OPA2227 input and output buffers.

The case is a durable black finish with a front panel mounted master volume and separate Ch1/2, Ch3/4, and CH5/6 gain controls. All potentiometers are Alps. The 3 gain control pots are linear RK16 and the master volume is a remote controlled log RK27 blue velvet potentiometer.

The volume control project is set up to run 6 channels using my boards or can be replaced with 3 stereo Kookaburra PCBs.

The same schematic as the Kookaburra was used but with 2 volume controls and a summing circuit was added to incorporate master/individual channel gain.

I can not get the volume control to work so I am giving up. The multipot volume control scheme part seems to work up to the PIC microcontroller (0-5V control). After that the schematic models the Kookaburra except with 2 PGA chips from the same microcontroller. ExpressPCB was used for the board design. I have everything one might need to get this to work. I have more pictures that will help explain the design better. Please e-mail me for those.

I would like to get $200 shipped/OBO for this unit. I have invested so much time it hurts to give up.

tf1216 · 24th July 2008, 11:29 AM

bump

wigginjs · 24th July 2008, 12:47 PM

So, whats the problem? Why couldn't you get it to work?

tf1216 · 24th July 2008, 01:37 PM

Everything up to the PIC seems fine. The PIC was programmed to be used in the Kookaburra. The code/controller is a proven design that somehow I am screwing it up.

tf1216 · 26th July 2008, 03:45 PM

bump

tf1216 · 20th August 2008, 10:46 AM

bump

tf1216 · 22nd August 2008, 10:49 PM

Any interst at $150 shipped and a modded DCX for $220 shipped?

tf1216 · 25th August 2008, 10:53 AM

bump

Make me an offer if you are interested.

tf1216 · 27th September 2008, 08:25 PM

bump

kappa546 · 2nd October 2008, 10:55 PM

what modded in the dcx?

24th July 2008, 12:47 PM	#3
wigginjs diyAudio Member Join Date: Dec 2003 Location: Columbia, SC	So, whats the problem? Why couldn't you get it to work? __________________ The Four Chairs DIY Home Theater

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24th July 2008, 11:29 AM	#2
tf1216 diyAudio Member Join Date: Nov 2004 Location: Minnesota	bump

24th July 2008, 01:37 PM	#4
tf1216 diyAudio Member Join Date: Nov 2004 Location: Minnesota	Everything up to the PIC seems fine. The PIC was programmed to be used in the Kookaburra. The code/controller is a proven design that somehow I am screwing it up.

26th July 2008, 03:45 PM	#5
tf1216 diyAudio Member Join Date: Nov 2004 Location: Minnesota	bump

20th August 2008, 10:46 AM	#6
tf1216 diyAudio Member Join Date: Nov 2004 Location: Minnesota	bump

22nd August 2008, 10:49 PM	#7
tf1216 diyAudio Member Join Date: Nov 2004 Location: Minnesota	Any interst at $150 shipped and a modded DCX for $220 shipped?

25th August 2008, 10:53 AM	#8
tf1216 diyAudio Member Join Date: Nov 2004 Location: Minnesota	bump Make me an offer if you are interested.

27th September 2008, 08:25 PM	#9
tf1216 diyAudio Member Join Date: Nov 2004 Location: Minnesota	bump

2nd October 2008, 10:55 PM	#10
kappa546 diyAudio Member Join Date: Dec 2004 Location: austin	what modded in the dcx?

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