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1992-04-24
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2KB
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32 lines
WOOFER CHOICE will assist in answering the options that the
customer should be aware of regarding the benefits or
losses in using a particular woofer.
1. Woofer size: What does the customer want? The mistaken
concept of "bigger's better" remains horribly rampant.
Very often, a smaller woofer in a given box will provide
a lower cutoff frequency than the larger one. This can
be beautifully modelled on BLAUBOX's PLOT RESPONSE
screen.
2. To guide the customer into the best box for their
installation, the DESIGN feature of BLAUBOX is very use-
ful at comparing different woofer/box combinations in
hopes of coming up with a good compromise in performance,
complexity, and price.
3. Be smart and start your designs with 10" woofers; they
are very forgiving of small, and overly large, boxes.
4. Try to use woofers with high Qts values ( 0.5 - 0.8 )
for sealed boxes and low Qts values for vented boxes
( 0.25 - 0.5 ). Bandpass designs like the Qts values
around 0.5 for optimum performance.
5. Try to maintain 4 ohm loads on the amplifiers through
series or parallel connection of the speakers. Even
though most amplifiers today are 2 ohm stable, it
still strains the amps due to the significant heat
dissipation.
6. Try to match the power output of the amp with the
woofer's power handling values. Huge amplifiers on
50 watt rms woofers is kind of "boneheaded."
More information and examples on this subject are in the
BLAUBOX user's manual.