UPDATE: Finished my Express build last night > it's working!

Express, Liverpool, Rocket, Dirty Little Monster, etc.

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dblgun
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Re: UPDATE: Finished my Express build last night > new PT, no more fuses blowing, odd output

Post by dblgun »

prairie wrote: Wed Dec 21, 2022 8:59 pm ITS FIXED.

I had wired the B+4 lead to the wrong side of a resistor.

Holy hell I feel dumb. I greatly appreciate everyone’s input and help.
I may have missed something but your voltages weren't off at V2?
sluckey
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Re: UPDATE: Finished my Express build last night > new PT, no more fuses blowing, odd output

Post by sluckey »

Great! You should be proud and happy. I can see it in the pics now that you pointed it out. :wink:
prairie
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Re: UPDATE: Finished my Express build last night > new PT, no more fuses blowing, odd output

Post by prairie »

I'm not sure if it's worth mentioning here, but when I fired it up, it was pretty noisy (as expected from initial adhoc lead dress). I replaced the lead going from the volume wiper with a shielded cable, changed the 500pF mica cap with a .01 film cap, and the one 47pF mica cap in the phase inverter with a 470pF poly cap. I also put a 100k grid stopper on pin 7 of V1.

Greatly improved the noise floor and reduced microphonics. Will try to sneak out of work early today to crank the hell out of it.
prairie
Posts: 56
Joined: Thu Oct 20, 2022 7:02 pm

Re: UPDATE: Finished my Express build last night > it's working!

Post by prairie »

If anyone is interested, I recorded a demo the other day with my completed Express build. Rhythm guitar side (left) are a Bogner Ecstasy Classic and the lead side (right) is the Express.

https://on.soundcloud.com/JwiA8p9LH2ATtfT49

Also, here’s a photo of the amp:

Image
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Reeltarded
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Re: UPDATE: Finished my Express build last night > it's working!

Post by Reeltarded »

I love it! It fits and sits perfectly! It sounds a bit more refined than a lot of Express amps.
Signatures have a 255 character limit that I could abuse, but I am not Cecil B. DeMille.
ChopSauce
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Re: UPDATE: Finished my Express build last night > it's working!

Post by ChopSauce »

That's really great. I love it all!
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romberg
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Re: UPDATE: Finished my Express build last night > it's working!

Post by romberg »

That is a cool lookin' little head. And it sounds great too!

Mike
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