Diamond Audio Technology D7402 Installatiehandleiding - Pagina 5

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TURN-ON CONNECTION (REMOTE)

Locate the terminal labeled "REMOTE" between the ground and +12V

power connection points on the end of the amplifier. Your source unit should

have a wire in its harness labeled "REMOTE" or "AMP TURN-ON." Some

source units come equipped with a "Power Antenna" lead only. This should

also work. Run this wire from your source unit to the amplifiers REMOTE

connection. Strip approximately 1/2 inch of insulation from the wire. Insert

the wire into the terminal, and tighten the Allen screw. Your D7 Professional

Reference Series Amplifier will accept remote turn-on wire up to

10 gauge directly.

A W ORD ABOUT

POWER AND GROUND CABLE GAUGE...

The following basic formula can be used as a quick guide to determine the

total amperage draw of a mobile audio system. This formula is based on a

50% amplifier efficiency rating. Diamond Audio D7 amplifiers are more

efficient. Others may be less. Using cable of a larger gauge will only increase

the current capability of your system. Do not use cable of a smaller gauge

than suggested here.

FORMULA:

Total amplifier rated RMS power x 2 = Total Input Wattage

Total Input Wattage = Current Draw (in Amps)

Battery Voltage

EXAMPLE:

An D7152 amplifier has 2 channels at 150 Watts per channel RMS into

4 Ohms totaling 300 Watts. Work the formula as follows:

300 Watts x 2 = 600W

600W = 50A Total Current Draw

12V

If the same amplifier is being driven to a 2 Ohm stereo or a 4 Ohm mono

load, double the total wattage number:

(D7152 = 600W @ 4 Ohms Mono) x 2 = 1200W

1200W = 100A Total Current Draw

12V

D7152 and D7402 manual #135.p65

If you are considering a high output alternator or if you are not sure if your

vehicle's charging system needs to be upgraded, consult your Authorized

Diamond Audio Dealer. They will be happy to set you up with everything

necessary for you to enjoy a listening experience in your vehicle without equal.

BASIC TROUBLESHOOTING

Amplifier has no output.

Is LED (located on power/ground endpanel) lit?

Yes: Make sure audio signal is present at RCA inputs. If no signal

is present, use alternate signal source and try again. If signal is

present, check configuration of crossovers. If still no signal, contact

your authorized dealer.

No: Check power, ground and remote wire for +12V. Verify all

connections. If voltages are correct and still no LED, contact your

authorized dealer.

Note: The following steps apply to each pair of channels on your amplifier.

Sound in one channel only.

Reverse left and right RCA cables at amplifier inputs. Is the sound

now in the opposite channel?

Yes: Reverse the input RCA cables in every product installed

BEFORE your amplifier until the problem is found. Check RCA

cables for open connections. Repair as necessary.

No: Check the speaker or speaker wires of the dead channel

and repair as needed. If speaker and wire are OK, contact your

authorized dealer.

One or more pairs of amplifier channels "squeal" when

operating.

One or more speaker wires are shorted or one or more speaker voice

coils are shorted or rubbing. If speakers and wires are OK, contact

your authorized dealer.

Amplifier volume gets gradually softer as music is playing

without touching any system controls.

Amplifier is going into thermal protection. Make sure amplifier has

room for fan(s) to breathe. Preventing air from reaching the heatsink

will cause the amplifier to overheat, as will running the amplifier at

too low of an impedance.

8/30/2002, 2:30 PM