THD Electronics YJSD User Manual

Yellow jackets, Yjsd, 1 duet tube converters

Advertising
background image

®

THD Electronics, Ltd.

3510 6th Avenue W

Seattle, WA 98119-1513

Phone: 206.781.5500

Fax: 206.781.5508

[email protected]

www.thdelectronics.com

Thank You!

Thank you for buying our Yellow Jacket

Converters! They will

provide you with years of service, assuming that you replace
the tubes when they are worn, and will also give you a much
greater variety of sounds from your amplifiers than you have
ever experienced before.

How to Install Yellow Jackets:
1. With your amplifier cold and turned off, remove the output
tubes from their sockets. (Use a towel to protect your hands
if the tubes are hot.)

2. Place the Yellow Jacket Converters in the output tube
sockets and install the provided EL84 tubes into the Yellow
Jackets™. Make sure that all pins are properly aligned and
do not force anything. It should all go smoothly if the tube
pins are properly aligned.

3. Turn the amp on, let it warm up, and play. Your amp is
now running in Class A Mode with EL84 output tubes.

You do not have to adjust the bias of your amplifier as the Yel-
low Jackets themselves create their own cathode bias circuit,
ignoring the bias setting in your amp. This also means that
when you put your old tubes back in the amp, your bias will
be set just as you left it.

If you have an amp with 4 output tubes, you have a number
of options:

a. Replace all 4 output tubes with Yellow Jackets.

b. Remove all 4 tube and put only 2 Yellow Jackets in the amp,
giving you about 20% power. In this case, install the Yellow
Jackets in the inner two sockets. (You do not need

continued on other side...

Yellow Jackets

• Contains One Pair of Yellow Jacket™ Converters Model YJS and Two EL84 Power Tubes.
• Converts most amplifiers with 6L6s, EL34s, 6550s or 6V6s to EL84s without modification or rebiasing.
• Converts from Class AB to Class A operation!
• Drops output power by 50% to 70%.
• Safe for all common amplifiers and transformers.
• One Year Limited Warranty on Converters.
• “The next best thing to getting yourself a new amp.” - Guitar World Magazine
• “Increase amplifier flexibility”- Guitar Player Magazine

Yellow Jackets

1 Duet Tube Converters

YJSD

includes EL84 Power Tubes

THD Electronics, Ltd.

®

Handbuilt in the USA of US

and imported components.

®

THD Electronics, Ltd.

3510 6th Avenue W

Seattle, WA 98119-1513

Phone: 206.781.5500

Fax: 206.781.5508

[email protected]

www.thdelectronics.com

Thank You!

Thank you for buying our Yellow Jacket

Converters! They will

provide you with years of service, assuming that you replace
the tubes when they are worn, and will also give you a much
greater variety of sounds from your amplifiers than you have
ever experienced before.

How to Install Yellow Jackets:
1. With your amplifier cold and turned off, remove the output
tubes from their sockets. (Use a towel to protect your hands
if the tubes are hot.)

2. Place the Yellow Jacket Converters in the output tube
sockets and install the provided EL84 tubes into the Yellow
Jackets™. Make sure that all pins are properly aligned and
do not force anything. It should all go smoothly if the tube
pins are properly aligned.

3. Turn the amp on, let it warm up, and play. Your amp is
now running in Class A Mode with EL84 output tubes.

You do not have to adjust the bias of your amplifier as the Yel-
low Jackets themselves create their own cathode bias circuit,
ignoring the bias setting in your amp. This also means that
when you put your old tubes back in the amp, your bias will
be set just as you left it.

If you have an amp with 4 output tubes, you have a number
of options:

a. Replace all 4 output tubes with Yellow Jackets.

b. Remove all 4 tube and put only 2 Yellow Jackets in the amp,
giving you about 20% power. In this case, install the Yellow
Jackets in the inner two sockets. (You do not need

continued on other side...

Yellow Jackets

• Contains One Pair of Yellow Jacket™ Converters Model YJS and Two EL84 Power Tubes.
• Converts most amplifiers with 6L6s, EL34s, 6550s or 6V6s to EL84s without modification or rebiasing.
• Converts from Class AB to Class A operation!
• Drops output power by 50% to 70%.
• Safe for all common amplifiers and transformers.
• One Year Limited Warranty on Converters.
• “The next best thing to getting yourself a new amp.” - Guitar World Magazine
• “Increase amplifier flexibility”- Guitar Player Magazine

Yellow Jackets

1 Duet Tube Converters

YJSD

includes EL84 Power Tubes

THD Electronics, Ltd.

®

Handbuilt in the USA of US

and imported components.

Advertising