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Aquaboy DLX - compander voltages all over the place...

Started by Cortexturizer, March 07, 2015, 09:56:00 PM

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Cortexturizer

Would you say, judging by the clip, that there is too much bass loss? I chose the fuzz face on purpose because it's very bassy. It definitely changes the tone A LOT. Not in a out of phase kinda way, I don't feel like that's the case any more, but it changes the tone a lot.

I am happy to look elsewhere in the build. I have checked all of the components that you listed in your post above and all is well, the resistors measure ok, the caps are what they should be. Q1 looks okay and is oriented properly. I used LF353P.

On pins 10-11 of the compander, and on, for example, one side of R38, I get a very hot signal that's above unity and distorted a little, which should be fine, it's just...hot, not overly dirty. Then that gets attenuated later on in the circuit to what you could hear from the clips. It becomes uber clean. I was amazed by the clarity of the delay repeats, I had a V3205 delay a couple of years back and it was MUCH dirtier, I loved it. This sounds awesome too.

So, whatever I should measure, record some sounds from any parts of the circuit, just tell me what to do - I'll do it.

I am very very close and want to get it perfect. Analog delays are really really my thing. Been settled on the DL4 for a year and a half now because I like it's looper and I don't have the real estate on the pedalboard for another delay, but the feeling of playing through BBDs really cannot be replicated in a digital delay imho.

Thank you for any help you might provide guys. Cheers
https://kuatodesign.blogspot.com - thoughts on some pedals I made
https://soundcloud.com/kuato-design-stompboxes - sounds and jams

Cortexturizer

Hm, the mentor dude also agrees that the sound that I got in the clip is not...um...natural. Hm, what could be the issue here? Any ideas? the delay line is awesome and clean, there is very little noise altogether and my voltages are textbook. At least they were every time I've checked. Dunno.
Ugh.
https://kuatodesign.blogspot.com - thoughts on some pedals I made
https://soundcloud.com/kuato-design-stompboxes - sounds and jams

Scruffie

Quote from: Scruffie on April 26, 2015, 07:59:09 PM
Quite possible you have a wrong value in the Pre-emphasis/De-emphasis network from the sound R5,6,7,9 & 10 and C3 & 6 in particular.
Works at Lectric-FX

Cortexturizer

damnit. just looked at C6 once again and yes, it was a 68n capacitor. my god...how...ugh.
replaced with the proper value and all working properly now.
can't believe it.

thank you Scruffie and teknoman2, not an easy build but in the end, it was actually the thing that I do the least often - wrong component value...ugh!

cheers! what a great pedal
https://kuatodesign.blogspot.com - thoughts on some pedals I made
https://soundcloud.com/kuato-design-stompboxes - sounds and jams