TS 9 vs TS 10

Subject: Re: ts-10 VS ts-9
From: analogmik–(at)–ol.com (AnalogMike)
Date: 7 Jan 1997 16:50:18 GMT

Hi again,

RG Keen is one of my my electronics gurus and knows a lot more than
I do but he missed several other differences between the TS-9 and TS-10,
some of which contribute greatly to the sound differences.

1. The input section before the first transistor is referenced to ground
through a single 510K resistor on the TS-9 and 808, but on the
10 there is a network of 3 resistors, one to 9V and one to ground,
and a CAP to ground. This should not affect the tone as much as
the other changes, but I remove this stuff anyway.

2. This is the one that RG mentioned : After the first transistor there
is a 220 ohm resistor R6 that should be shorted out.

3. On the drive pot the #2 and #3 leads are connected on the TS-10.
On the 9 and 808 the 3 lead is open. This should not make much
difference but I undo the 3rd lead anyway.

4. There is an extra transistor in the signal path when the effect
is in the OFF position on the TS-10. RG’s circuit on his web
page does not use the FET switch so he probably did not consider
that. But if you are modifying a TS-10 you should remove the
transistor Q6, remove the 10K R40 and from that transistor,
and run a jumper from the input of the R39 1K resistor feeding
that transistor to the input of C15, bypassing this whole mess.
It’s not an easy job on that circuit, requires a few jumpers.

5. The output from the LEVEL control goes through an extra
capacitor that should be removed and jumpered – C11.

6. After C11 is an extra resistor to 4.5 volts that should be
clipped out – R17.

7. Then to make it into an 808 you change the output section
resistors as RG said.

RG, please feel free to add the above to your web page!

Regards, mike ~^v^~ aNaLoG.MaN ~^v^~ (203) 778-6658

AnalogMik–(at)–ol.com http://members.aol.com/AnalogMike/stock.htm

————–C0AE3AC690D368EC80371DED–