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ACME sound Low B-1 User Manual

ACME sound Low B-1
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Owners Notes Low B
-
2 and Low B
-
4 Systems
6
The first is that the ability of the systems to reproduce the lowest notes doesn’t reach it’s full capability
until the surroun
ds have been loosened up by being used.
The second, and perhaps more important consequence, is that when driven to their maximu
m excursion,
the woofers are much easier to damage when they are new, than after they’ve been broken in. It is more
likely that
the cones will be overstressed the when the speakers are brand new, than at any time after
they’ve been used.
How much break
-
in
time is necessary? I have broken them in using a sine
-
wave generator in less than
three hours. I believe that whan playing bass
, it is very difficult to predict how long it would take for a
specific person to do it. It depends on your style, and how loudl
y you play. My best advice is to start
slowly, and work you way into it. Within reason, of course, the longer, and the more grad
ual the better.
But please do your best to loosen up the woofers before you get into any serious slammin.’
The reason I have c
hosen to point out these concerns about breaking the speakers in, is because just
lately, I have had two customers damage their
woofers within the two
-
week trial period. This was
unheard of just several years ago. The woofers are the same. But I believe th
at the availability of
incredibly powerful amplifiers, even more than just a few years ago, has sort of changed the landscape.
Which brings me to the second IMPORTANT warning...
2.
A little bit of information about the level controls on power amps:
I’ve
had unfortunate conversations with an alarming number of people who have made the same
mistake:
A great many people, I’ve lear
ned, believe that a 1000 watt amplifier becomes a 500 watt amplifer once
the level controls are set to “halfway up,” “12 o’clock
,” or “only at 5,” if you catch my meaning.
I would prefer not to have this conversation any more, because it usually is with s
ome well
-
intentioned
kid whose woofers are in tatters, and who can’t understand what he did wrong.
So, read this twice if you
have to: Lowering the setting of the Level, or Volume control on your power
amplifier does not limit it’s ability to produce it’
s full power! If a 1000 watt amplifier is only turned
halfway up, it does not become a 500 watt amplifer! It is still able to pr
oduce it’s full 1000 watts if it gets a
“hot” enough input signal.
Read it again.
Thank you.
Guidelines for Use
Impedance an
d Amplification:
These speakers have a reputation for being power hungry, handling large amounts of power, and being
very loud
for their size. Although all of these things are basically true, it’s interesting how some users will
focus on one of these qual
ities and others will concentrate on others. For example, I’ve had people ask if
their 1800 watt amp will be enough for the 700
watt
-
rated B
-
4! The answer is yes.
After reading the admonitions about power in the magazine review (Bass Player magazine, 11/
96), some
people think they need incredibly huge amplifiers to hear the speaker at all! Implicit in that assumption is
that the
speakers will handle infinite power. Both of these ideas are exaggerations of the truth.
The Low B
-
2 is rated at 350 watts RMS
continuous. It has been used with success with 100
-
500 watt amps.
One customer here in Denver has managed with only 100 watts,
although it seems impossible to me. It is

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ACME sound Low B-1 Specifications

General IconGeneral
BrandACME sound
ModelLow B-1
CategorySpeakers
LanguageEnglish