Page 14 - Triwatt Custom Lead Amp Builder's Guide

which is desirable with guitar amplifiers. It is also therefore important to match
speaker power ratings reasonably closely with the power of the amplifier. Popular
instrument speakers are available from Tone Tubby, Celestion, Jensen and others.
Note: If you were to use two cabinets hooked directly into the amp, be sure to set
the amp at half the impedance of the cabinets. For example, if your cabinets are 8
ohms each, set the impedance selector to 4 ohms.
Durability Most musical styles will require the amplifier to be overdriven for
extended periods of time, and the amplifier must be designed to provide this without
duress on any components. Common non-guitar design principles assume that
circuitry will be designed to avoid overdrive, and technicians working in this field
have to ‘un-learn’ many basic assumptions. Popular circuits have evolved through
trial and error, due to a general lack of documented knowledge in the field of non-
linear amplification.
Road Worthiness Musical equipment of this type needs both physical and
electrical protection. A band often has its equipment transported and set up by a
road crew with little guarantee of physical care. Likewise, an assumption should be
made that the output stage will at times be inadvertently shorted, so most
professional equipment is designed to handle this contingency, preferably
electronically, and at the very least without fuses inside the chassis.

TrinityAmps TRIWATT Builders Guide Ver. 2.31.docx
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