Modify behringer DEQ2496?

[seoman]

Your power problem comes from a bad contact on the power connector

I seccond that!!!!!!

Remove the glue dot off the connector en wiglle it.
That wil solve ít.

I had the DEQ for 3 days and it started switching on-off.
When removing the power supply, in search for bad kontakts, the problem was fixed.
I never have had a power failure again.

But I also agree on the bad PCB layout.
I only took a closer look on the analog part and i think that can be done much better.

Regards Simon

[stef1777]

Originally posted by rossl
From post #17 in this thread:

Does anyone know what the 9V is used for? Is it the relays?

Don't know.

The right Power connector pinout:

1 Red = +15V
2 = -15V
3 = 9V
4 = analog ground
5 = digital ground
6 = 5V
7 = 3V

Same on the DCX power supply (but not all used). Mod the power supply on the DCX is really a good thing. The PSU is really too small on the DCX.

[rossl]

Originally posted by stef1777


Don't know.

The right Power connector pinout:

1 Red = +15V
2 = -15V
3 = 9V
4 = analog ground
5 = digital ground
6 = 5V
7 = 3V

Same on the DCX power supply (but not all used). Mod the power supply on the DCX is really a good thing. The PSU is really too small on the DCX.

Thanks. I will work on the connectors.
I think the 9V may be for the display light.

[ChuckT]

I believe the 9V goes to the regulator LM317 that powers the dac and other chips, so this supply is very important. But somebody please double check.

[Ryssen]

Is there a schema for the powersupply for DEQ2496?

[reins]

Hi,

has anyone ever thought of putting a remote volume control into the DEQ?
As any needed voltage is available, this with a new output stage would be a interesting feature, eliminating the pre-amp. Would the power supply deliver enough current to drive the additional units?

Thanks
Stephan

[stef1777]

Originally posted by ryssen
Is there a schema for the powersupply for DEQ2496?

No available.

Originally posted by reins
Hi,

has anyone ever thought of putting a remote volume control into the DEQ?
As any needed voltage is available, this with a new output stage would be a interesting feature, eliminating the pre-amp. Would the power supply deliver enough current to drive the additional units?

Thanks
Stephan

I don't think that the stock PSU can handle more circuit.

[seoman]

I'm thinking of turning my UC into a preamp.
it should be simple.
There are 3 different inputs and i want to expand them with some relais.
Ofcource there has to be a motorpot at the analog outputs.
The thing is that with midi you can completely controll all functions so with a couple of buttons and a controller it would be easy to load a memory preset and switsh some relais.

Right now I use all 3 inputs with 2 different corrections.
2 (cd comes in optically and the pc by spdif on the xlr) have the same room correction.
For surround i use the analog inputs to adjust the center and subwoofer channels of my processor.
I was very dissapointed by the sound of both the center and the subwoofer but after roomcorrection they fit much better with my other speakers. (even though they are not corrected anymore)

I'm so pleased with it that i'm thinking to sell my processor (rotel rsp 1066) and buy me a extra deq2496 and a dvd player with multi outputs and make a multichannel preamp myself with the DEQs.

The thing is that the deq2496 has more potentials to be a good pre amp than all the **** you can buy below 2000$.
When it comes to signal handeling that is. I don't need the video switching!
The motorpot i can rip out of an old sony surround processor ESD type (its six channels). The relais will be the Nais TQ2 they are very good and can even handle the digital signals! maybe even video!
It should be easy .

If this plan becomes more concrete i'll post it ofcource!
But the plan has just started.

Regards Simon

[lsisaxon]

Has anyone tried OPA2228 instead of OPA2604? The THD is supposed to be an order of magnitude lower than OPA2604.

[FLECOM]

i was just wondering about output transformers, instead of the $200 dac output transformers that were linked to two pages ago couldent you use these sowter transformers and still get a balanced line out?

http://www.sowter.co.uk/specs/3603.htm