Recent posts

#61

Open Discussion / TL604 analog switch chips

Last post by gordo - September 02, 2024, 12:07:47 AM

I've never run into these before but had a Peavey Deuce/Mace on the bench yesterday and the TL604's were used to switch the reverb and onboard phaser circuits.  The amp was randomly noisy and it ended up being the phaser circuit bypass that was flapping a bit (and sounded horrible when engaged).  I think TI might have made them back in the day and I suspect they were cheaper than relays and LDR's back in the 90's until they stopped making them.  The originals are hard to find ($$$) and there are some interesting workarounds.  I only needed one so decided to roll the dice and eBay it.

Too bad, they're fast and quiet.

#62

Open Discussion / Re: it tastes like ...burning

Last post by jessenator - September 01, 2024, 05:23:18 PM

Been tweaking the single-sided version of the Weener Wah I've cooked up, calling it the Weener XXL



Now that I've got an actual wah shell I can take measurements. Added back in the spring bolt/lug hole and good thing, too. The 2016 WW doesn't go down that far it looks like.

#63

How Do I? Beginner's Paradise. / Re: the why of wah

Last post by djaaz - September 01, 2024, 05:19:15 PM

I would'nt. Maybe play it first to figure it out and then find another one to gut when you kind of know what you're chasing?

#64

Open Discussion / Re: it tastes like ...burning

Last post by jessenator - September 01, 2024, 04:59:12 PM

Looking good! What CAD software did you use to make the PCB art?

This one is a direct copy from what I could find of pics online done in illustrator, with some CAD part exports to make sure pad sizes and spacing on the 8-DIP 5532 (and a few other parts) was correct—everything else was basically standing on-end, so it was just cut and past.

I also did a recreation of it in Eagle, which isn't as neat as replicating a hand-drawn etch. At least back then you did it at like 10x magnification and then shrunk it down to fit the board. I couldn't draw that minutely like folks who do intaglio for currency do.

Eagle version:

#65

Open Discussion / Re: it tastes like ...burning

Last post by Aleph Null - September 01, 2024, 03:42:40 PM

I'd call that a success

Looking good! What CAD software did you use to make the PCB art?

#66

Open Discussion / Re: it tastes like ...burning

Last post by jessenator - September 01, 2024, 03:31:34 AM

I'd call that a success

#67

Open Discussion / Re: it tastes like ...burning

Last post by jessenator - September 01, 2024, 01:54:19 AM

I'm very hopeful. Vector exported it so I could actually do cross hatching passes and it's far cleaner than the first attempt

It's in the brown stuff right now

#68

Tech Help - Projects Page / Re: MadBean Orifice (Openhaus)

Last post by madbean - September 01, 2024, 01:24:20 AM

Hi I was wondering if you had finished your prototype and if so how it turned out AND if there is anything you could share about it. My build has been just sitting in it's bag basically cause of no funds to order those transistors.
 Did you or were you able to try any other trannies for your build?

Thanks for the reply and the help by the way I really appreciate it . People taking their own time to read about my problem builds and trying to help are very cool people

I've got it nearly populated. I wasn't able to get the exact transistors they use but I got something close. I just need to test them for gain an leakage. Anyway, I will complete the build over the next couple of days and report back. I do wanna make this one happen.

#69

Build Reports / Re: Dual Phaser/Delay with the...

Last post by Jay - August 31, 2024, 11:36:44 PM

Oh dang. That's clean.


Sent from my iPhone using Tapatalk Pro

#70

How Do I? Beginner's Paradise. / Re: the why of wah

Last post by jessenator - August 31, 2024, 09:08:02 PM

So, plot twist.

I looked for a used/parts crybaby and nothing was coming up sub-$50 even before shipping, so I looked locally and saw one for $60. Figured it might've been in a questionable state at that price (pictures were rather low res and few).

Turns out it's an unused 535Q multi-wah specimen—works perfectly. I'm now conflicted ha! Probably won't gut it.