Duncan KTG-1 Tube, Руководство пользователя

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Maintenance
Handle the KTG- I with care, preferably mounted in a good quality rack, and it will provide years
of trouble free service.
Most maintenance procedures will involve the tubes. Refer any other necessary work or
adjustments to a qualified technician. There are no user servicable parts inside. If your KTG- I
should require service, contact us at the factory (805) 964-9610 or
your Seymour Duncan
Research Dealer for the name of the Authorized Service Center nearest you.
The
12AX7 tubes should last 1 1/2 years, depending on use. Symptoms which indicate failing
tubes include:
q any intermittent noise (sputtering, ringing,etc.,)
q excessive white noise or hiss.
q inability to get a clean sound from the clean channel, even at low volumes.
Trouble Shooting
The following chart should help isolate some common problems you may encounter with your
pre-amp. Some are obvious problems you can solve yourself.
1. No output:
q Check power indicator. Switch on & AC plugged in?
q Check fuse. Replace with a 200 MA/250V SLO-BLO fuse
q Verify source voltage with something you know works.
q Check to make sure volume controls are up.
q
Output jacks not connected, or faulty output cable.
q Defective speaker, or speaker connection.
q Guitar turned up?
2. Distortion from clean channel or deterioration of tone or quality in distortion channel.
q Check 12AX7 tubes.
3. Pre-amp will not switch channels:
q
Check footswitch - is it overriding the front panel selector?
Check front panel Channel Switch - it must be in Channel I to enable the Programmable
Footswitch to switch channels, please refer to section "How to use with a Duncan Programmable
Footswitch.
If manual channel switching control, or internal switching circuit is defective, refer to authorized
service center.
Notes