Postby Roger » 18 Mar 2017, 10:42
I have so many plates of this amplifier not because I have had many TSL, I only have one (1998). But I found on eBay a bargain from a TSL chassis with clean / crunch / lead and reverb plates. This amplifier of 2002. In fact recently my reverb plate of 1998 ceased to function and this 2002 works well. In 2010 I changed the motherboard to the new motherboard. And then I got the kit of new clean / crunch / lead plates only compatible with the new motherboard. I also have a completely new motherboard thanks to the low efficiency and disorganization they sometimes have in Thomann. I ask for the kit and they bring me a new motherboard. After thousands of phone calls, thousands of emails and thousands of photos give me the reason and send me the kit.
I currently have installed the new clean / crunch / lead plates and the new motherboard I bought in 2010.
The mods that are currently in my TSL100 are the following.
Motherboard: TR3 disassembled. R71 replaced with 6H choke 200mA. C18 changed to 220pf - closer to DSL value (470p) instead of TSL value (100p), bleeds more high frequencies off after initial distortion stage (V1AA) in crunch and lead channels. Added toggle to switch C16 from 2.2n to 6.6n (thicker bass on both drive channels). Added toggle to switch R31 from 1K (stock) to 500R (a bit of extra gain on all channels, more asymmetric for rawer breakup). Added toggle to switch 390pf cap in parallel with R1 (plate bypass), cuts high frequencies over 8.5kHz after distortion, gently. Affects all channels.
Lead Panel:Add 82K resistor in series with C8, C7 changed to 500p.
47pf mica cap added across VR2 (channel volume) - first-order lowpass filter bleeding off treble frequencies above ~7kHz.