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Internal signal routing

2-channel/4-channel input switch – routes RCA input from channels 1/2

to channels 3/4. When the switch is engaged,
channel 1 input is routed to both amplifier
channels 1 and 3 with input channel 2 routed to
amplifier channels 2 and 4.

Switch in the engaged position.

When the switch is disengaged, channels 1, 2, 3,
and  4  receive  signal  individually  from  their
respective inputs.

Switch in the disengaged position.

multi-cross

TM

crossover configuration

xover control 1/2  

The crossover selection for channels 1 & 2 has three possibilities:

When the switch is in the left position, the crossover section of the amplifier is
bypassed. Channels 1 & 2 output is full range.

When the switch is the center position, channels 1 & 2 are filtered through a
12dB per octave high-pass crossover that is infinitely variable from 45Hz to
5,000Hz.

When the switch is in the right position, channels 1 & 2 receive signal from the
crossover output of channels 3 & 4. Note: When the switch is in the right
position, the output level is controlled by the ch 3/4 level control.

The crossover sections dedicated for channels 3 & 4 are activated by
depressing the switch next to each frequency adjustment control.
Both high-pass and low-pass crossovers are infinitely adjustable from
45Hz to 5,000Hz. The high-pass and low-pass sections may be used
individually or together to create a bandpass filter.

Note: When using both sections to create a bandpass filter, make sure you have selected a
low-pass frequency which is higher than the high-pass frequency!

System 4 

– PQ40 in 2-channel bridged mode. Commonly used for subwoofers but may also be used

for full range, midbass or midrange applications depending on crossover mode and frequency setting.
Optional: AC502 can be used in this mode.

System 5

– PQ40 used in front high-pass , rear tri-mode operation. Channels 1 & 2 can be configured

for high-pass or full range operation. Rear channel must be configured for full range operation.
I

mportant! Choose passive crossover frequencies for the subwoofer and high-pass speakers

that do not overlap.

8

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Страница 1: ...analog and digital systems PQ40 2 owner s manual 8900 3110 REV A 2001 analog and digital systems inc www adst com ...

Страница 2: ...lace In the event you misplace the sales receipt your dealer may be able to give you a copy Take a moment now to read the terms of your warranty Check to be sure your sales receipt is dated and has the product model number and serial number if applicable on it Then put it away in a safe place When shipping a Product in for service Enclose a copy of your original sales receipt that has the date pro...

Страница 3: ...ic over 100dB has been shown to cause permanent hearing damage Systems using a d s components are capable of achieving volume levels which substantially exceed this level When operating your system for sustained periods at high volume be sure to use hearing protection to prevent long term exposure We want you to be able to enjoy the music for many more years features of your PowerPlate Remote Leve...

Страница 4: ...teTM be sure to keep a minimum of 1 of clearance around the amplifier for adequate airflow to prevent overheating Trunk compartment mounting The most common mounting location is in the trunk or cargo compartment For optimum cooling mount the PowerPlateTM chassis vertically with the fins running vertically or mount the PowerPlateTM horizontally with the fins pointing upward Avoid horizontal mountin...

Страница 5: ...nnected to check speaker wiring and amplifier properly repair or replace as needed refer to the installation quick reference section of this manual for detailed instructions internal crossover not set reset crossovers referring to properly the for speaker multi cross crossover configuration section of this manual speakers are blown check system with known working speakers and repair or replace as ...

Страница 6: ... not important except that the music chosen should be recorded such that any system distortion can be clearly heard not masked by musical content 5 Increase the source unit volume control about halfway Increase the PowerPlateTM level control associated with the front full range or midrange in a bi amplified front system until you can hear sound at a low but clear level 6 While listening carefully ...

Страница 7: ...r with the aid of an RTA to achieve maximum performance With any loudspeaker minor deviations from the recommended frequency ranges may provide superior results depending on your speaker locations and your vehicle s acoustics Setting crossover frequencies higher than recommended will not cause damage and may provide good results However DO NOT set high pass tweeter crossover points below the tweet...

Страница 8: ...s circuit Push the select switch to scroll through the different sections and a blue led will indicate which crossover is currently displayed Level controls Independent level controls for channels 1 2 3 4 adjust the input sensitivity from 100 mV to 8 VRMS Note When crossover 3 4 output is selected for channels 1 2 the 3 4 level control adjusts the output level for channels 1 2 and 3 4 simultaneous...

Страница 9: ...tput of channels 3 4 Note When the switch is in the right position the output level is controlled by the ch 3 4 level control The crossover sections dedicated for channels 3 4 are activated by depressing the switch next to each frequency adjustment control Both high pass and low pass crossovers are infinitely adjustable from 45Hz to 5 000Hz The high pass and low pass sections may be used individua...

Страница 10: ... fill speakers and subwoofers speaker connections for stereo configurations Minimum recommended impedance is 2 Ohm stereo Speaker terminals accept up to AWG 12 speaker wire speaker connections for bridged configurations Minimum recommended impedance is 4 Ohm when bridged Speaker terminals accept up to 12 gauge speaker wire 14 9 ...

Страница 11: ...4 channel selector switch crossover and channel mode switches and crossover fre quency switches to the desired positions Refer to the controls and connections section for more information 7 Adjust all amplifier input level controls to the 1 4 position to full counter clockwise than turn clockwise 1 4 turn 8 Mount the amplifier into position and plug in the power and speaker terminals Attach the in...

Страница 12: ...12 11 ...

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