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Model 4.5 PBM
Figure 1:
Amplifier panel
and controls for
Model 4.5 PBM
Connecting Your Subwoofer
The Atlantic Technology 4.5M Powered Subwoofer is simple to hook up, offering several connection
methods for maximum flexibility. Study the system diagrams starting on page 6. Once you have found
the example which most closely matches your system, hook up your subwoofer(s) as shown in that
diagram.
IMPORTANT NOTE:
If you are using the complete System 4.5 with a surround processor that includes its
own filtered subwoofer output we strongly recommend that you connect the 4.5 PBM to your system using
the speaker or high level inputs. This is because most processor internal crossovers are only 12 dB per octave,
which is not steep enough for use with the higher crossover levels required for ultra-compact satellites. Only
use the low level RCA inputs when the processor outputs unfiltered signals. Should your processor include a
120 Hz or higher crossover, you may connect it to the low level inputs on the 4.5 PBM.
When using the recommended high level speaker connections and a discrete 5.1 channel receiver/processor
(Dolby Digital, DTS, etc.), set the center channel and surround speakers to the “Small” setting, and the front
left and right speakers to “Large.”
