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Rothwell Switchblade [traced]
Posted: 18 Nov 2012, 21:35
by cpm
I had this box on the bench. The Rothwell Switchblade actually sounded nice, although a bit too bassy on the eq for my tase.
The problem with this is that its kind of microphonic, a lot of gain and some supect smd electrolytics, and that its mounted soldered to the 3pdt, amplifying noises on the switch and tapping the box...
I couldnt get the values on the SMD caps, I dont have a capable meter...
Re: Rothwell Switchblade
Posted: 28 May 2014, 00:15
by mirosol
Interesting design. Here are my guesses for the non-polar caps:
C1 - 100n
C2 - 100n
C4 - 47n
C6 - 100n
C8 - 47n
C9 - 1n
C10 - 1n
C13 - I guess that should be fine with 1n.
I drew a layout with those, but if anyone has an idea of the correct values... Let me know. Layout is currently unverified.
Re: Rothwell Switchblade
Posted: 01 Jun 2014, 20:27
by mirosol
Layout works, but my guesses on the values aren't exactly spot on.. Anyone have better guesses?
Re: Rothwell Switchblade
Posted: 25 Jun 2014, 03:00
by mmolteratx
mirosol wrote:Layout works, but my guesses on the values aren't exactly spot on.. Anyone have better guesses?
Try
C1 - 100n
C2 - 220n
C4 - 1n
C6 - 470n or maybe even 1µ
C8 - 1n
C9 - 220n or 470n
C10 - 100p or 220p
Re: Rothwell Switchblade
Posted: 25 Jun 2014, 06:39
by mirosol
Thanks mmolteratx. Some of those do look more reasonable. I'll be updating the layout soonish...
Re: Rothwell Switchblade
Posted: 26 Jun 2014, 18:57
by mirosol
Values do make a bit more sense now...
Re: Rothwell Switchblade
Posted: 02 Jul 2014, 21:35
by mirosol
mmolteratx wrote:mirosol wrote:Layout works, but my guesses on the values aren't exactly spot on.. Anyone have better guesses?
Try
C1 - 100n
C2 - 220n
C4 - 1n
C6 - 470n or maybe even 1µ
C8 - 1n
C9 - 220n or 470n
C10 - 100p or 220p
Nope. Just oscillation with those values. Anyone has the unit and a capable meter? I'd be grateful for inaccurate readings too...