THD Electronics YJC User Manual

INSTRUCTION SHEET

• Contains one Yellow Jacket converter model

YJC

6V6s to EL84s with out mod i fi ca tion or rebiasing.

- Guitar World Magazine

- Guitar Player Mag a zine

Thank you for buying our Yellow Jacket con vert er! It will

place the tubes when they are worn, and will also give

you a much greater variety of sounds from your am pli fi ers

than you have ever ex pe ri enced before.

screw the ground wire under the tube sock et mount ing

screw (to provide an adequate ground con nec tion), and

all pins are prop er ly aligned and do not force any thing.

aligned.

You do not have to adjust the bias of your amplifier as the

Yel low Jackets themselves create their own cath ode bias

am pli fi er, your bias will be set just as you left it.

®

Yellow Jacket

Yellow Jacket

Tube Converter

YJC

THD Electronics, Ltd.

Seattle, WA 98119-1513

www.thdelectronics.com

This mod el of Yel low Jacket converter, the YJC, is a spe-

Tweed Pro (5E5-A), Hot Rod De luxe, Hi-Watt 50 and

amps, Mesa/Boogie 50 and 100 watt amps, Bogner, VHT,

Yellow Jackets are NOT to be used in amplifiers with

Ampeg SVTs, Hi-Watt 200s and Or ange 120s. These am-

pli fi ers have too high a plate volt age and will dam age the

the Yellow Jack et reduces the plate and screen volt ag es

too high in certain am pli fi ers. If you are not sure if this set

will be happy to ad vise you on your individual situation.

Amplifiers which vary the bias voltage to create a trem o lo

Jackets. This includes the Fender Vibro- Champ, Brown

Vibrolux (5F11, 6G11) to name a few.

a reduction in power, you need the YJ20 Yel low Jacket. If

your amp uses 7591 tubes, you should use the YJ7591 Yel-

tory or from your local dealer, or this unit can be ex changed

for the one you need. Please con tact the fac to ry.

Thank you once again for buying our products. With out