Potato Cakes

Re: Build Thread:PQD2
« Reply #200 on: February 09, 2019, 06:19:43 PM »
Got it done. The 10dB gain boost is gone and everything works. Oh, and it sounds amazing. I'd be curious if different tubes would make any meaningful difference with this circuit. Has some one did any sort of testing in regards to tube selection? It already is quiet and smooth sounding. The question is for science.

Thanks!

Paul
« Last Edit: February 20, 2019, 03:36:12 PM by Potato Cakes »


Potato Cakes

Re: Build Thread:PQD2
« Reply #201 on: February 09, 2019, 06:20:14 PM »
One more. For the kids.

Re: Build Thread:PQD2
« Reply #202 on: February 20, 2019, 01:29:08 PM »
One more. For the kids.

Nicely done!

Gustav

erquere

Re: Build Thread:PQD2
« Reply #203 on: May 02, 2019, 01:09:54 PM »
Hi ! Looking for the pcbs of the PQD2, would anyone have spare ?

Used to be a journalist but I prefer build comps and eqs

Potato Cakes


funkymonksf

Re: Build Thread:PQD2
« Reply #205 on: January 29, 2020, 10:29:02 PM »
Hey everyone,

I’m going to be building this eq once I receive the parts. I’m considering using the Edcor XS1100 transformers instead of the Lundahl 5402. I know this works, however, I’m not sure there’s enough space on the PCB layout.

Has anyone used Edcors with success? If so, did it fit without mods? Sound/opinions?

funkymonksf

Re: Build Thread:PQD2
« Reply #206 on: February 01, 2020, 03:07:47 PM »
Greetings,

I just ordered the Don-Audio power transformer for this project. It's the model designed for 2-4 channels. The secondaries are: 220v, 9v, & 5v.  From the schematic it says to heat the tubes with 12v. I was told I need to replace some resistors and do some traces for this to work. Does anyone using this power transformer have any advice or input?!?!

I want to make sure I don't make any mistakes. I appreciate any help. Thanks!

funkymonksf

Re: Build Thread:PQD2
« Reply #207 on: March 13, 2020, 04:49:06 PM »
Does anyone have a list or layout as to where the resistors go on switch it PCB?

Potato Cakes

Re: Build Thread:PQD2
« Reply #208 on: March 13, 2020, 08:59:44 PM »
It's in the document PQD2switches.pdf that is part of the build documents.

Thanks!

Paul

funkymonksf

Re: Build Thread:PQD2
« Reply #209 on: March 15, 2020, 02:42:47 PM »
Thank you sir!


Re: Build Thread:PQD2
« Reply #210 on: February 24, 2021, 12:51:52 AM »
Hi,

Does someone has a link for the BOM ? It's not anymore on Gustav's page as he stopped selling kits.

Also, I'd like to know if there are any other differences with the G-Pultec from Jakob appart from the power supply powering both channels. I had the chance of buying two G-Pultec pcb kits on black market and I found this topic when doing researches about building a stereo unit out of these 2 boards with step switches instead of pots.

Re: Build Thread:PQD2
« Reply #211 on: March 18, 2021, 04:19:35 PM »
Hey!

I am about to finish my build and the first test with neutral settings on the filter PCB worked good, but it’s really loud! Even with 10db pad on the input, it peaks on my interface.

Now @Paul, what was your mistake?

I am not sure if this behavior is to be expected and if it can be only adjusted with the Input gain from previous apperatus in the chain?

Re: Build Thread:PQD2
« Reply #212 on: March 18, 2021, 04:34:46 PM »
Do you have the BOM ? Can you send it ?

Cheers

Re: Build Thread:PQD2
« Reply #213 on: March 20, 2021, 03:54:19 PM »
Yes, find the BOM attached.

I don't know why PCB Grinder stopped to list this service.
Is here someone who can tell me if the gain behavior is to be expected?

Re: Build Thread:PQD2
« Reply #214 on: March 20, 2021, 03:57:23 PM »
Nice ! Thanks dude !

Gustav stopped selling kits last month.

Re: Build Thread:PQD2
« Reply #215 on: April 03, 2021, 10:22:44 AM »
My pleasure, have fun with the build!

Soooo...
I really need help regarding the extrem volume boost of this thing. It’s clipping my inputs pretty hard on bypass.

Is Gustav still around here?
« Last Edit: April 03, 2021, 10:26:57 AM by 11Schotter »

Re: Build Thread:PQD2
« Reply #216 on: April 05, 2021, 01:41:25 AM »
My pleasure, have fun with the build!

Soooo...
I really need help regarding the extrem volume boost of this thing. It’s clipping my inputs pretty hard on bypass.

Is Gustav still around here?

Id be glad to help.

If you set the controls flat, and toggle bypass in/out, there will be a discrepancy of about 1.3dB, but you should not see any "extreme volume boost".

Try this - Take the input XLR out of the unit, and plug it directly into the output XLR. I am asking you to do this, because I want to see if this also gives you the "extreme" volume boost. If it does, it would indicate the problem is not the unit, but the set-up.

After that, we can look at the unit itself, and to proceed, it would be nice to quantify, which level are you sending to the unit, and what is coming out of the unit.

Gustav


 

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