Section
4
Using the Quad X-Amp
4.0 Power Amp Selection
We highly recommend a stereo power amplifier (such as Carvin's FET 450 or FET 1000) for use
with the Quad X-Amp. The power rating will depend on the speakers you use but a reasonable
minimum rating would be 100 Watts continuous per channel into 8Ω.
4.1 Speaker Selection
The most popular speakers among guitar players are 12" "full range" speakers in various open
back and sealed enclosures. Any of these systems will provide adequate performance for most
players. Of the currently popular enclosures the one that seems best suited for a stereo setup is
the 2x12 sealed enclosure. An excellent example of this speaker format, and one that we
recommend, is Carvin's V212 system. Where higher sound levels are required you might
consider one 4x12 system for each of the left and right channels. Double 4x12 stacks on each
side would provide even higher sound levels.
Quad X-Amp Using the Quad X-Amp Section 4
4-1
Speaker Power vs. Amp Power
Don't feel like you have to "match" the rating of the power amp to the rating of the
speaker. That's not the case at all. The speaker's power rating is the maximum power
that the speaker can take before it is damaged. As a rule, you could never continuously
deliver your amps full rated power into your speaker without grossly overdriving the amp.
In reasonable use you will only reach full power on peaks. Even as you begin to
overdrive (clip) your amp on musical peaks the average power to your speakers will only
be about one tenth of the amp's rated power. The average power input is what matters
to your speakers. Allowing for exaggerated speaker power handling claims, and for
frequent clipping, you can still safely use an amp rated at twice the power of the
speaker. So don't skimp on amplifier power.
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