Crunch DRA850.2 Specifications download pdf (Page 8)

Basic application

Crossover frequency control checklist:

These sub bass amplifiers can be used in any of the bi-amplification systems described in

LOW PASS: 80Hz (approximately 11 o’clock)

this manual, replacing the 2 channel amplifiers as per the illustrations.

SUBSONIC:35Hz (approximately 1 o’clock)

BASS EQ: 12 o’clock max

Interconnect cable checklist:

Connect the inputs to a suitable source, e.g. a head unit with good quality RCA cables.

Connect the LINE OUT to the inputs of the system highs amplifier.

Level control checklist:

Refer to the section “Setting up systems after installation for best performance”

Use at least #12 gauge speaker wiring. The amps have dual speaker terminals,

simplifying the hookup of multiple speakers. These are 1 channel amplifiers.

Minimum final loudspeaker impedance: 1-Ohm.

FULL RANGE

STEREO LINE INPUT

NOT USED

Y-ADAPTOR

Note: You can use the Radio/CD designated mono line output or a full range stereo line output.

For full range stereo line output, you will need an optional “Y-Adaptor” as shown.

DRA1850.1D / DRA2550.1D / DRA3250.1D D-CLASS 1 CHANNEL AMPLIFIER APPLICATION

PARALLEL MONO

SUBWOOFERS

2-OHMS EACH MINIMUM

DRIVE

MONO LINE INPUT

VIA Y-ADAPTER

FROM MONO SOURCE

MONO

SUBWOOFER

POWER

SPEAKER

FUSE

GND REM +12V

- - + +

REMOTE TURN-ON

CHASSIS GROUND

TO BATTERY + 12 Volts VIA FUSE

FLASH

NO FLASH

30Hz 250Hz

LOW PASS

OUTPUT

INPUT

LEVEL

BASS EQ

0dB6V 0.2V

10dB

CONTROL

REMOTE

15Hz

35Hz

SUB

SONIC

POWER

SPEAKER

FUSE

GND REM +12V

- - + +

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Crunch DRA850.2 Specifications Page 8

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