VAC Phi Alpha 160 Musicbloc User Manual
Page 7
Page 7
Matching To Your Loudspeakers
Like many modern tube amplifiers, the Phi Alpha Musicbloc 160 includes multiple match taps for
the speaker outputs. Do NOT assume that the setting which corresponds to your speakers’
published impedance specification will yield the best sound. Due to the various standards by which
impedance can be measured, not to mention the fact that a speaker’s impedance varies with
frequency, it is impossible to assert with certainty which output tap will yield the best sound. For
this reason, VAC strongly suggests auditioning your speakers through all settings. In general, we
find that a speaker’s minimum impedance is more important than its nominal (average) impedance
when determining which setting is correct. A lack of bass response often indicates that a lower
impedance setting should be tried.
CHASSIS CARE
Although your amplifier is extremely durable, its finish can be scratched, chipped or damaged if
improperly treated. Cleaning with a soft, damp cloth while the amplifier is switched off and
unplugged should restore the finish to its original lustre. Never clean with harsh or caustic cleansing
agents.
When shipping your amplifier, be certain to wrap the amplifier in the cloth, tissue or plastic wrap
in which it was originally packaged. VAC is not responsible for cosmetic damage resulting from
improper care or packing.