Crate V58 [9/12] V58 guitar amplifier

Important Information About Tubes and Tube Products (continued):

Survival Tips For T

ube Amplifiers:

To prolong tube life, observe these tips and recommendations:

• Match the impedance of your speaker cabinet(s) to your amplifier. Improper impedance matching will con-

tribute to early tube degradation and may cause premature tube failure.

• Make sure the speaker(s) are properly connected prior to turning on the amplifier.

• After playing the amplifier, allow sufficient time for it to properly cool down prior to moving it. A properly

cooled amplifier prolongs tube life due to the internal components being less susceptible to the damage

caused by vibration.

• Allow the amplifier to warm up to room temperature before turning it on. The heat generated by the tube

elements can crack a cold glass housing.

• Replace the output tube(s) before the performance degrades or the tubes fail completely. Replace the

tube(s) on a regular basis (at least once per year or as often as every 4 to 6 months if you play long and

hard every day).

• Always have the bias checked after replacing the output tubes (unless the amplifier is equipped with "self-

biasing circuitry"). This should be done ONLY at a qualified service center. Improper biasing could result

in the tubes running too hot, which greatly reduces the life of the tubes – or too cold, which results in dis-

torted sound regardless of level settings. Do not play the amplifier if it exhibits these symptoms – get the

bias checked/adjusted immediately to prevent tube failure and/or other damage.

• If the locating notch on the base of a power tube breaks off, replace the tube. This significantly reduces

the risk of damaging your amplifier by incorrectly inserting the tube.

• Protect the amplifier from dust and moisture. If liquid gets into the amplifier proper, or if the amplifier is

dropped or otherwise mechanically abused, have it checked out at an authorized service center before

using it.

• Proper maintenance and cleaning in combination with routine checkups by your authorized service center

will insure the best performance and longest life from your amplifier.

CAUTION: Tube replacement should be performed only by qualified service personnel who are

familiar with the dangers of hazardous voltages that are typically present in tube circuitry.

V58 Guitar Amplifier