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HFi1000D / HFi1500D / HFi2000D / HFi2500D MONO AMPLIFIER APPLICATION

Basic application

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

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

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.

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

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

which have multiple positive and negative connections for ease of wiring. The 2 positives

are the same internally and the 2 negatives are the same internally.

DESIGNATED

MONO OUTPUT

FROM HEAD UNIT

B O O S T

H F R - 3

MI N MA X X

DESIGNATED

MONO OUTPUT

FROM HEAD UNIT

B O O S T

H F R - 3

MI N MA X X

PARALLEL MONO

SUBWOOFERS

2-OHMS EACH MINIMUM

HFi1000D & HFi1500D

H F

HFi2000D & HFi2500D

H F

FULL RANGE

STEREO LINE INPUT

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.

Crossover frequency control checklist:

LOW PASS: 35Hz to 250Hz

SUBSONIC:15 Hz to 35 Hz

BASS EQ: 0 to +10dB

Level control checklist:

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

Minimum final loudspeaker impedance: 1-Ohm.

Y-ADAPTOR

NOT USED

MONO

SUBWOOFER

TO BATTERY + 12 Volts

VIA FUSE

REMOTE TURN-ON

CHASSIS GROUND