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Just leaving this here: From the comments: The B string is the third in that triad shape, and a perfect 5:4 major third is 14 cents flat of a equal temperament major third.

Hi guys, need some help with my 2203 from 1981. Does this wiring fo the impeadance switch look ok to you? (see picture) The output jacks at one point were changed and the "polarity" of the OT was reversed = Brown/common to tip and ohm selector to sleeve. So I am changing that back to stock...

Hi guys, I need some help with a Randall RM50 and how to proceed with the problem. It look likes, the heater supply was "overloaded" causing tow 100R 1W resistors to blow. Have a look on the schematics and pictures I attached. The resistors are located at the bottom right of the schematic...

Hi there, when comparing schematics of the RM50 with the RM100, I realised that there is an additional 3.3 Mohm resistor connected to ground after the 0.1uF cap in the RM50. This resistor is missing in the RM100 (labeled as "no part"). Any ideas what this resistor does? To my understanding, it...

...on a Switch? So is there any good solution without being dangerous with the high voltage applied to the switch? I konw working with relays would be one way to do it. But I want to keep it simple if possible. So I am thinking of maybe having the switch inside the amp chassis installed. That...

Hi, I am trying to find out, which Sozo caps are the "right" ones and would need some help, as I`m finding different reports. To make things easier, I am focussing on the yellow ones. So there are the old Sozo 400V caps as well as the Sozo next gen. 500V caps. But somewhere I red, that Sozo...

So lately I`ve been thinking of what determines the feel of an amp? Beside the obvious thing like the OT and the circuit, usually people say that the more commlex an amp is, the slower the response in general gets or the more disconnected it feels. But what is it with the increased complexity...

So, I kind of lean towards 16 ohm speakers every time I hear a comparison on YT of the same speaker type in different ohm values. But lately, it made me think if I only hear the difference in NFB of the amp, when the output jack is changed in the amp. So what do you guys think? Do the speakers...

Looks like it got updated to dual channel https://www.synergyamps.com/shop/modules/soldano-slo-ii/

Whatch and share

Does anyone know, when metroamps will have transformers back in stock for builds? I noticed that their site states, that due to supply shortages they are currently not available. However, Covid is over, so I‘m wondering if they will by back in stock any soon?

So I am thinking of doing the bright cap switchable on both of my Marshall clones, 2203 and SLP. Currently the 2203 has 1000pf and the SLP has a 500pf cap. I am considering a 3-way switch. So what values would you guys suggest to try beside the stock value and no cap? I could go the route by...

Hi, I realize that there are some guys here that have a much better eye the me when identifying old tubes. So my question is, is there a way to identify a Mullard 12ax7 tubes if the Blackburn code (or any code) is not visible anymore? What do you look at? Shape of the glass? Shape of the mica...

I decided to go through the whole hassle of retolexing my so far favorite Marshall 4x12. It`s a late 70ies cab with G12-65 speakers. The tolex had tears and stains and there was a hole in the fornt grill cloth. And of course, the cab came without the Marshall logo and casters. Getting rid of all...

So Anthony from the 33 Workshop in Belgium did fix two of my Boogie amps previous techs were not able to. One was a Triaxis that did not respond when changing settings and the other one was a Recto RevF modded by Voodoo amps which after years developped humming because of problems in the channel...

and finally some guys are giving him some pushback, which is good. Can`t imagine how many less experienced guitarist were missled by his BS-clickbait videos.

Ok guys, I have two Marshall 4x12 cabs that were originally loaded with g12-65 speakers. One has the later, big recessed input terminal, the other the earlier small one. The early one has a really nice response and feel in the bass and low mids register and it pushes a lot of air with my JCM800...

Hi, what would be the best potentiometer choice for a resonance mod in a JCM800 2203 style circuit? I played around with fixed values and liked the 220k resistor and 0.033uF or 0.022uF cap combination, but haven`t tried any other resistor values. What would you suggest as a pot value? 500K or...

AFAIK Celitic Frost was one of the inspirations for a lot of bands of the 80ies and 90ies metal scene. One of their amps is for sale, of course located in Switzerland. Not mine and I have no connection to the seller, but thought maybe someone has interest in this one...