1.RCA INPUT / AUTO HI-LOW LINE CONVERTOR
RCA input jacks are for use with source units that have outputs up to 5V. A
remote turn on wire is needed when not using the ATO feature. When a
remote turn on wire is used keep the ATO button pressed “in”. For Hi-level
signal input use non-supplied RCA speaker wire adaptors. Connect positive
and negative of each speaker to each adaptor and connect to RCA inputs.
Press ATO button “in” (see #6) when hi-level signal is used.
2.X1 / X18 FOR HIGH PASS FREQUENCY CROSSOVER
When this button is set at the “out” position the HPF range adjustments are
20Hz ~ 45KHz. When this button in set at the “in” the HPF range is from
360Hz ~ 6KHz. WARNING: Use buttons and HPF knob correctly to prevent
low frequency damage to tweeters.
3.HI-PASS FILTER AND MODE SWITCH
When the setting is adjusted to the far left position the amplifier is in full
range from 20Hz ~ 45KHz. Adjustments to HPF can be made by turning to
the right to desired frequency.
4.X1 / X11 LOW PASS FREQUENCY CROSSOVER
When this button is set to the “out” position the LPF range adjustments are
50Hz ~ 550Hz. When this button is set to “in” the LPF range is from 550Hz
~ 6KHz.
5.LOW PASS FILTER CONTROL
This control is used to select the desired low pass x-over frequency. The
frequency can be adjusted from 50Hz to 6KHz.
6.AUTO TURN ON SIGNAL SENSING HI-INPUT / REMOTE OUT
When ATO button is set to “in” any RCA low level signal coming from a
source will turn on the amplifier. Optional turn on of the amp can be done
using the 12Volt turn on terminal (see #16) if desired. When set to the
“out” position speaker level inputs using the non-supplied RCA speaker wire
adaptors will automatically power on the amplifier and the remote input
becomes a 12V DC trigger output to power other 12V devices.
7.POWER INDICATOR
When LED is GREEN this amplifier is in safe operation. When LED is RED this
amplifier is in protection mode.
8.GAIN CONTROL
The gain control will match the amplifiers sensitivity to the source units
signal voltage. The operating range is 6V to 200mV. Input level is from 0.2V
~ 5V. This is NOT a volume control.
9.SETTING FOR HPF / FR OR LPF / BAND PASS
When this button is set to the “out” position frequencies are either full
range or high-pass depending on your frequency selector settings (#2 &
#3). When button is set to “in” frequencies are low-pass and adjustable for
the creation of a band-pass depending on your high-pass / low-pass
frequency selector settings. For band-pass use (#2, #3, #4 & #5)
