How can you extend the service life Tubes?

TRIAMP MK II - MANUAL

If, on the other hand, you install a new set with characteristics that deviate from the old set, you definitely should re-bias the amp.

Again, biasing an amp is not a DIY task. It takes experience and a extensive working knowledge in measuring techniques, which is why this job should be carried out exclusively by qualified technicians with tube amp tuning experience.

•A hum adjustment must be made every time tubes are replaced. Activate AMP 2, CHANNEL B and AMP 3, CHANNEL B and set the lowest noise levels via the trimmer.

•Select input tubes with minimal microphonic properties and lowest noise levels by conducting a simple listening test.

•As a rule, the amp will not absolutely need to be re-biased with each new set of tubes, assuming you use a matched set. Biasing is complex procedure requiring special tools and should only be done by a qualified amp specialist.

How can you extend the service life

of tubes?

Never operate the TriAmp® MK II without connec- ting a load (loudspeaker)! With this in mind,

you should always use high-quality, heavy-duty speaker cables that won’t crimp or snap.

Use the STAND BY switch! Warming tubes up unnecessarily wears them out that much quicker. Make a habit of shutting down the anode voltage via the Standby function and you’ll enjoy many more hours of operation.

Avoid exposing the amp to vibrations, especially when it’s powered up. Switch the amp off a good while before moving the amp so that the tubes can cool off completely first.

Proper biasing and trimming extend service life. Whenever you feel that tube wear is on the rise, be sure to have a technician check the amp’s bias and trim settings.

All other TriAmp® MK II components do not require maintenance. Use a soft slightly damp cloth for all exterior parts. Avoid exposure to mechanical shocks, extreme heat, dust and moisture. Ensure the cooling vents at the top of the housing are not obstructed during operation.

Here are a few more basic rules that will extend the service life of your amp enormously if you follow them:

•Make sure all peripheral devices and connec- ting cables are in a state of good repair! – Ensure plenty of air can circulate around the amp’s ventilation slots at all times – your TriAmp® MK II’s life depends on it.

•Definitely avoid exposure to mechanical shocks and extreme heat, dust and particularly moisture.

•Be very careful about the kind of peripheral devices you connect to your amp and always check out their specs before you plug them in. Never connect speaker cabinets with an impedance (ohm) rating lower than the TriAmp® MK II is designed to handle. Under no circumstances should you connect devices with high output signal levels (e.g. power amps) to your amp’s input.

•Be sure the AC power source delivers the current that your amp is designed to handle before you plug it in. When in doubt about the local rating, ask the venue’s sound technician or a stage hand.

•Refrain from DIY repairs! To be on the safe side, you should also have a qualified technician replace internal fuses.

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