4. PHASE Switch
This switchable control can be used to correct any “phase” or “time delay” effect in the system by bringing the
low frequency from the rear of the vehicle to the front.
5. BRIDGED CONNECTION Port
For externally bridging two of the same model PowerBass Xtreme Class D amps together. Connect the INPUT
of the MASTER to a suitable source via a standard telephone wire with RJ25 (4-pin) modular connectors to the
jack on the SLAVE amplifier. Then select the MASTER/SLAVE switch properly (see Speaker Output Configuration
diagram).
6. BASS FREQ Control
This control is variable from 40Hz to 100Hz and allows you to choose the exact frequency you want to boost
using the BASS EQ feature.
7. BASS EQ Control
This equalization circuit is used to enhance the low frequency response of the vehicle’s interior. With up to
18dB of boost varied by the BASS FREQ control, the BASS EQ can be adjusted to meet your own personal taste.
8. SLAVE / MASTER Switch
Two like amplifiers can be connected together and externally bridged into a single 2-ohm (min) load. The
preamp controls on the SLAVE amp will be disabled. Only the amplifier you select as the MASTER will control
these functions. The Dual Link Power Doubling Circuit increases the output power as follows:
XMA-600D x 2 = 1,200 watts RMS (2 ohms min)
XMA-1200D x 2 = 2,400 watts RMS (2 ohms min)
NOTE: If using only one amplifier this switch should remain in the MASTER position.
9. LPF (Low Pass Filter) Control
This 24dB filter allows low pass of frequency and is adjustable from 20Hz through 250Hz to eliminate
unwanted high frequencies.
10. REMOTE LEVEL (RJ25 Jack)
This is the 6-pin connector port for the Remote Level Control. Now the amplifiers secondary gain circuit can
be adjusted from the driver’s seat.
11. POWER Indicator
The clear L.E.D. lights BLUE when the power is on.
12. STATUS Indicator
This L.E.D. glows RED when the built-in protection circuitry is activated. This indicates a problem with the
system in relation to the amplifier (see Troubleshooting Tips).
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