recommended that you use at least 300 watts for comfortable operation. In some situations, with certain
nts can be surprising. You have doubtless already been warned.
Cut these numbers in half for the Low B
4 at 700 watts RMS continuous. It has been used with success with 200
watt amps. At lower levels you may fi
nd amplifiers of as little as 200 watts acceptable, but again, it is
recommended you use at least 300
500 for comfortable operat
These systems are aligned using Thiele
Small technology to minimize distortion in the lowest half
B") but this alignment increases amplifier current requirements at these frequencies. As
a general rule, when distortion is hea
rd from these speakers, it will be eliminated by increasing amplifier
power. This is the unfortunate price we pay for low distor
tion, extended bass from a compact enclosure.
High damping factor solid state amps are recommended for greatest cone control, bu
amp, results will generally be acceptable. Several users report excellent results with the Ampeg SVT head
Boogie tube amps, with no
negative consequences resulting from the high
internal amplifier resistance associated
Because of the position of the midrange and
lacement is suggested for
2, with those units up off the floor.
For people who want to use a single speaker
zontal configuration, it is
recommended that you elevate the system on
a chair or similar object, with the midrange
2 boxes together, I have recommended placing them side by side in the vertical
n. Several customers have tried stacking them end
wise, column style, and have really liked the
raised midrange speaker, and the
way it disperses very evenly around the room.
In either case, place your amp or other heavy object on top to help anchor your
system to the floor. As the speaker cones move in and out, they will have a
tendency to cause the enclosure to vibrate in oppos
ition to the movement of the
cones. (Newton’s second law of motion.) This effect is present in competing designs
is is good advice when using any speaker, not just these Acme
models. It is to your advantage to minimize this effect by using a
available on top of the speaker, Walter Woods notwithstanding.
Also, as the ports are located on the back
of the box, you should leave at least 6"
between the speaker and any wall. Restricting the ports will increase distortion and
4 has rubber feet on what is designated the “bottom” of the speaker. The
idea, again, is to raise the midrange and tweeter off the floor, and allow these higher frequencies to
disperse into the room. I
n fact, to locate the midrange in the center of the front panel would provide a
more perfect and coherent source, but in the rea
l world, it was judged to be more important to cover the
4 units together, some users have achieved goo
d results by stacking the two speakers
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