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There's a long older thread of waterfall graphs for several different basses on Talkbass, but unfortunately a software update ate many useful contributions. Somewhere in there I posted a blind A/B test, with predictably interesting results. By the time we get to the G string the...

Whenever I finally finish up my through-hole open source bass EQ project there's a good chance Robert may spin off a PPCB board. Meanwhile, there's the considerably more complex part-SMD one, which is at v4: https://github.com/Passinwind/PW3B-LPF I have another one in the works with a fully...

Because the sub-fundamental content is often inharmonic, creates distortion, stresses loudspeakers, and your mom hates it. ;) There's also another less obvious use for an HPF: it often allows you to boost your amp's bass control more, without flub, and you can also tailor the peak frequency...

Global feedback around the power amp stages includes the output transformer inductance and serves to even out trafo nonlinearities and control damping factor. Local feedback gives a much different play feel, IME. I do use it in many of my tube bass preamp builds as a way of baking in some...

Red badges are a huge bonus, I noticed a really substantial difference when I had one for the first time in 2020. If you can get me an Exhibitor or Demonstrator badge I'll definitely be happy to pimp your booth and run a few errands as needed, but I'd be happy to do that regardless. I may...

I wouldn't bother going too deep on a bypass, personally.

How many opamps? FET, bipolar, or both?

I hear you. I tried supergluing some threaded 3/8” lamp rod to a couple of Alpha pot bodies as proof of concept, biggest drawback was the goofy thread format. The ID was nearly perfect though, and I never encountered any problems over the several months that filter preamp was in my test bass. I...

These are the only semi close match I’ve seen: https://www.underhillbass.com/product-page/pot-nuts Another luthier friend of mine has mentioned possibly getting into running some sets on a CNC rig, I will ask him about that the next time I get over to his shop.

Very interested, and ready and able to whip up some bespoke PCBs that I would happily share with the class if that might be helpful.

Have you scoped the clipping behavior? There are a lot of interesting hybrid formats these days, looking forward to checking them out in any case!

Says bipolar in the data sheet. Looks a lot like an upgraded OPA207, so chances are good I’ll like it and find it useful for some of my onboard preamp designs.

This artwork added at least $200 extra value:

Thanks for maintaining that list. Still hoping to see some cool new through hole ones someday, but definitely not holding my breath at this point. ;)

AFAIK OPA 1641/1642 are SMD-only parts, not sure that having to use an adapter qualifies as a pin for pin replacement? They're often my go-to choice for clean audio widgets in any case. Some of the LT FET opamps such as LT1113 and LT1169 have worked very well for me as subs for the usual...

Or much in the way of surface mount parts...;)

Here's a 1590BBS in Brunken Blue: All the colors I've bought from SBP are really nice, FWIW.

I managed to rent some or all of it as an e-book for a week or two, can't remember where though. I thought it was well worth it. As far as MLCCs, I went through the whole drill when I was working with hand soldering SMD film caps and thought C0G might be a workable alternative in a few filter...

The guy who gifted me one of the 1590BBS enclosures just finished his own build a few days ago: Should be wrapping my build up in the next day or three as well.

DigiKey’s DKRed service is mostly comparable to OSH, with the caveat that slotted pads are not supported. They tend to throw in one or two free bonus boards on many of my orders, so for the small-ish modules I often build they can be fairly cost effective. The boards drop ship from Royal...