Pascal Class D

[Kjeldsen]

Today my "original" amp begins to smell warm, like heated up metal. The output coils are quite hot. Anyone alse have tried this? There's no visual change, and fan dont start, so apparently not too hot

 

[Kjeldsen]

Just too much dust

 

[Kjeldsen]

Just too much dust

 

[pras1011]

So 1000d worth getting?

 

[Kjeldsen]

Yes, but do consider a rebuild. The preamp is not a good as the power amp. So at least change that part.

 

[Charcoal]

burned IRS on s-pro2 with ocassional shorting Vdrive on ground (plate-heatsink). Chnaged IRSes and involved resistors, PSU output all needed voltages BUT - amp is silent.
Any ideas where to look further?

 

[pras1011]

Yes, but do consider a rebuild. The preamp is not a good as the power amp. So at least change that part.

Is it easy to change the preamp? Where do I buy them from? Is there a way to bypass the two volume controls?

 

[Kjeldsen]

It not the volumepots that degrades I think. Its the cheap preamp. You can skip the preamp, or buy are finished one based on better op amps or discrete build. Pascal input is only 2.2 kohm and single ended. Either a strong low zout preamp is needed or a buffer

 

[andreaskn]

The Motu is much more powerfull than Xonar U7 I used before.

To bypass the preamp is quite easy. There are a connector on the amplifierboard. Just take it out, and you can access the input pins directly. I will take some photos when I'm doing it.

sorry for treadjumping but did u ever get to do this?

I have 2 X-pro 1 in the mail and would like to not use the eval board.

 

[Kjeldsen]

Im still in progress. One module is now "naked", and I have bought chassis. But the motu is sold, and I might try a buffer in front. I now use the mini dsp 4x4 from thomann

 

[andreaskn]

I was thinking of going direct from xlr to pin 1-3 for signal input, seen it done some where online but cant fint it again

 

[Kjeldsen]

Spro2 are single ended, i'm not sure about your modules.

 

[gaztech46]

I have three EAW Redline cabinets where a serious mains fault put high voltage into the DSP preamp stage. Blew it to bits. The PRO series Pascal modules in the cabs still seem to be ok (so are the speakers) so I'm looking for a new 2-way preamp with adjustable EQ and Delay so that I can try to emulate the original processor. The EAW DSP module is unobtainium now as it was originally manufactured by Loud Audio. I can't even get any details of it so even attempting repair is difficult.

Can anyone recommend a suitable preamp module, probably DSP based, that has balanced in (with loop out) on XLR that will plug directly into the Pascal modules?

I found the Pascal DSP-A and the ALLDSP 1800B but finding where to get them isn't easy and neither company is disclosing the price of the module. I don't want to buy 500 pcs so they won't talk to me. Are there any suppliers or dealers that sell this stuff?

 

[Kjeldsen]

https://www.madisoundspeakerstore.com/digital-signal-processors-dsp/accuton-dsp-192-4-111-module/

 

[KaffiMann]

🤯

 

[Kjeldsen]

Thats why I use Thomanns minidsp

 

[cph2000]

Maybe wavelanDSP or LEAFF dsp ?

 

[KaffiMann]

Well, the Leaff LE44-MP supports the interface to Pascal modules:

But I do not know what kind of prices to expect, probably not cheap.

 

[Dominik H]

Xilica XM-2040P , If it still can be bought. I got mine used for cheap.