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Everything posted by Passinwind
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Smoke on the Water - Heavy Metal?
Passinwind replied to Killed_by_Death's topic in General Discussion
I think I may have hit "definitely" by mistake rather than "definitely not." -
Smoke on the Water - Heavy Metal?
Passinwind replied to Killed_by_Death's topic in General Discussion
It was Acid Rock at time of conception, at least to everyone around my social scene. -
Looking good there! It's a pretty simple circuit, shouldn't take too long to scope things out. We are finally getting a short break from the oppressive heat here (112F one day last week and over 100 for several days in a row) and I'm hoping to finally finish my new one up in the next few days. But of course our wonky Italian espresso machine chose last week as a good time to die, and the last round of replacement parts showed up in my mailbox this morning. Priorities...π
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And here the new one with through-hole caps is, tested and working right off the bat as designed and modeled: At this point I have five working boards to sort through in order to decide on the open source release spec, but this latest one looks to be the likely front runner. The Tayda pots have turned out to work fine so this needn't be a terribly expensive DIY build.
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IIRC even EBS have called that phantom power at some point, no worries. My current daily driver bass actually has a 4 pin XLR output and could use +/- 15V external power if I needed it to. Right now I still just have a 9V battery in the breakout box and plan to do a quasi Ric-O thing as soon as my DIY tube amp finally gets finished.
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In the case of EBS that's not actually phantom power in the classic sense, just outboard power on a dedicated conductor. It works fine in my experience, but it still has the same potential issue with switch-on transients blowing stuff up.
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Yep, an unamplified upright bass is clearly what the OP wants and needs.π As @itu advised, a soft start feature is going to be a really good idea in any case.
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Another day, another janky filter preamp. This one is testing the cheap Tayda C taper dual pots, which so far are "working" but seemingly limiting my preferred tuning options a bit. But in any case the board will go on free share at OSHpark very soon and I also have done a more DIY friendly layout with all through-hole caps that will likely take a month or two to vet thoroughly.
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The fingerboard oil survey
Passinwind replied to Jean-Luc Pickguard's topic in Repairs and Technical
Yep, and that's my running total for four basses and one guitar. I prefer food grade pure orange oil (it's killer in brownies too), but those with plastic bits in the line of fire may not want to go that route. -
The fingerboard oil survey
Passinwind replied to Jean-Luc Pickguard's topic in Repairs and Technical
I use it in one form or another a few times a decade as a cleaner, whether I need to or not. -
And here the new one is, somehow only four days from ordering the PCBs to having a working unit on my test bench:
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Thereβs a very long thread on Talkbass with prior art, frequency response graphs, a schematic link, board share info and bill of materials, and many many tangents: https://www.talkbass.com/threads/the-passinwind-open-source-preamp.1259692/ . At the moment I only have the original Bass/Mid/LPF three band design on offer as a board share, but the standalone filter ones should be coming online in the next month or so. Iβll probably start with the SMD version and then look at doing a through hole one eventually too. This is all an open source non-commercial labor of love BTW.
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Still keeping pretty busy, this week I revisited my variable resonance low pass filter design and worked out the glitches: I've now ported the design to all SMD format and plan to add it to my open source onboard preamp collection, so anyone who wants to and can deal with SMDs can build their own.
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I pretty much always just use DC heaters for preamp level circuits these days. It's been a long time since I owned my B-15, but I dont remember it being nearly as quiet as the stuff I've built myself over the last decade or so. That amp was always a bit of a problem child though, unfortunately. It's very cool seeing a hand drawn layout, I've been CAD-only for several years now. π
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The ones I've known and played with all made their peace with it many years ago and mostly seem to keep their mouths shut and have a great time. As a long time professional sound mixer I've certainly had to come to grips with lousy mixes in bands I've worked in, but we all have issues. π
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I found time to try test onboard preamp builds with a couple of new DigiKey DKRed boards this week: The bottom one, a three bander, is now living in my fretless Marco Bass. I also tested my little mini-mix board yesterday, it works just as expected.
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Anything made during the last century unless it's an acoustic instrument.
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When I needed to ship a valuable old bass to The Netherlands from the US I just took it to the most well known uptown bass shop in Seattle and had them pack it for me, for which they charged me a whopping $40. Then I went down the street to the post office that they use frequently, and those guys were completely on top of it. It made for a 12+ hour day since I had to get a CITES inspection along the way, which would no longer be necessary, but I got 'er done and everything went as smoothly as one might hope for.
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Makeup/Vanity Cases for essential accessories
Passinwind replied to TomWIC's topic in Accessories and Misc
I used one like this for many years: https://www.etsy.com/listing/963058918/vintage-vanity-case-vintage-samsonite?gpla=1&gao=1&&utm_source=bing&utm_medium=cpc&utm_campaign=shopping_us_all&utm_custom1=_k_0a0a7ae6d1b610669c7e1a7393761fe7_k_&utm_content=bing_319339186_1310617986645934_81913644654434_pla-4585513245482005:pla-4585513245482005_c__963058918&utm_custom2=319339186 But not for that stupid money, it was like $5 at a thrift shop. -
Simple gain stage/clean boost with variable gain via trim pot: I've done a matching mix/blend board as well, both will go up on OSHpark soon as free shares.
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What if you never play sitting down with a strap though? Itβd have to be crazy short to be doing anything in my case.
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Nothing says Teh Brutalz like a Hello Kitty paint job.