attempt to crash into the home market, a few years short of Altec's
gradual goodbye. A huge effort built like a professional monitor
with features galore, the list price must have been... quite discouraging.
BIAS means Built In Amplification
BIAS 550 is, naturally, an active loudspeaker system : five Class
AAB amplifier power each transducer, each designed to meet the other
- 700W per channel in pentamplification, with a maximum of .05%
of distortion per amplifier.
to this is the active equalization : plus or minus 6dB for each
amplifier/transducer. And all this with either on the BIAS550 itself
or.. with an IR remote !
enclosure itself is in fact four in one : each bass, sub-bass driver
and filter/amplifier is enclosed in its own A.C.R.S.
(Acoustical Cabinet Resonance Suppression) sub-cabinet ; each cabinet
is separated from the other with big damping foam rubber bars.
high/mid vertical array is condensed into another cabinet which
can also swivel around 15° for better positioning - Kenwood
(and others) had tried that in the late 1970s with the LS-1900.
drivers themselves are carbon fiber for the bass and polyimide diamond-coated
for the high frequency drivers - rigid, lightweight and costly.
in all a big 400kg wow which however didn't help Altec staying afloat,
let alone keep the competition with the once in-house JBL men. I
have no idea how many of the BIAS 550 were produced - probably a
model "made to order" ?
the buttons below for the specs and detailed views !!!