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INSTALLATION

TOOLS NEEDED FOR INSTALLATION

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1/16" Allen Key (Included): Crossover Security Cover Top Screws

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3/16" Allen Key: Up to 1/0 AWG Power Rings, Power / Ground

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5/32" Allen Key: Up to 4 AWG Direct Input, Power / Ground

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1/8" Allen Key: Up to 8 AWG Speaker and Remote Terminal
(Also Accepts Banana Jacks)

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7/64" Allen Key: Amplifier Mounting Flanges

A  WORD  ABOUT PROFESSIONAL INSTALLATION…

We, the folks at Diamond Audio, highly advise the use of a factory authorized
installation technician. System performance ultimately depends on proper
installation. Your D7 Series amplifier is an awesome component that deserves
to be professionally installed. If this last-chance plea for dealer assistance
doesn’t sway you, the following instructions will make the installation of your
new amplifier a little easier.

Before starting your installation, remove the negative battery cable before
working on the positive terminal to prevent a short to ground. If a short does
occur, current will continue to flow until the short is opened, the main fuse
blows, or the wire melts (possibly taking out any nearby flammable object,
wire loom, etc. causing a fire or possibly even a tear in the fabric of time and
space). Reconnect the negative terminal after all connections have been made.

MOUNTING YOUR AMPLIFIER

WARNING — AMPLIFIERS GENERATE HEAT!

You can mount your amplifier in any position, even upside down.
However, airflow must be maintained. Do not install your amplifier
under carpets or behind airtight panels. Let the amplifier breathe.
Without air circulation, your amplifier will reduce its power
output to protect itself.

D7 Professional Reference Amplifiers 

utilize a forced-air cooling system.

Care must be taken to provide a sufficient flow of air around the amplifier
for the thermal management system to operate at peak efficiency. Air is drawn
into the system along the sides of the amplifier, over the circuit board, through
the bottom heat sink and is exhausted through the vents on the end panels.
Be sure to allow at least 2 inches of space around the amplifier. Never mount
your amplifier where it can get wet. Water damage is not covered by the

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SYSTEM DIAGRAM 2

Biamp System with

Dual-Bridged Subwoofers

D7 six channel amplifier

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Channels 1/2 Highpass to a pair  of
coaxial component speakers

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Channels 3/4 Lowpass and bridged
 to a 4 Ohm subwoofer

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Channels 5/6 Lowpass and
 bridged to a 4 Ohm subwoofer

Summary of Contents for D7056

Page 1: ... up with the following rotational diagram HIGHPASS LOWPASS FREQUENCY 11 Notice that the outer most circle of numbers 1 00 2 00 etc represent numbers as they appear on the face of a clock The number underneath each hour designation on the simulated clock face is the approximate crossover frequency at that position BRIDGING All pairs of Diamond Audio D7 amplifier channels are capable of being bridge...

Page 2: ... be careful not to overtighten the screws Damage to the cover may result 12 As seen in the above drawing the function of the RCA inputs outputs and feature buttons are as follows CH 1 2 INPUT The RCA cables from your source unit should be inserted here 12dB BUTTON CH 1 2 To the right of the CH 1 2 INPUT RCAs you will find the 12dB button Pushing this button IN allows your amplifier to accept signa...

Page 3: ...nel D7 amplifiers also provide a separate fully independent crossover for the output RCA jacks providing filter control of any other amplifier 13 THERMAL MANAGEMENT SYSTEM All D7 Professional Reference Series Amplifiers feature our Intelligent Thermal Management System All amplifiers feature one or two depending on model internally mounted temperature controlled cooling fans Care should be taken t...

Page 4: ...he alternator It is capable of briefly supplying high currents for cold starting the vehicle as well as powering other important electrical loads either partially or entirely for a limited period when the engine is off In order to supply the power required for ignition lighting large audio systems etc a car needs its own efficient reliable and constantly available source of energy When the engine ...

Page 5: ...or 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 1 Amplifier has no output Is LED located on power ground endpanel lit Yes Make sure audio signal is present at RCA inputs I...

Page 6: ...ne end into the ground distribution block and tighten the Allen screw Insert the other end of the cable into the ground block on the amplifier and tighten the screw A ring terminal may be used here Repeat for each amplifier installed Run a cable the same gauge as the main power cable from the ground distribution block to the negative terminal of the system battery Your D7 Professional Reference Se...

Page 7: ...make that power Try to ground your system to a single point in the vehicle The gauge of the power and ground cables must be capable of handling the current needed by the entire system Power and ground cables must be of the same gauge If the alternator is not capable of supplying enough power for both the vehicle AND the audio system a high output alternator should be installed for best performance...

Page 8: ...by flammable object wire loom etc causing a fire or possibly even a tear in the fabric of time and space Reconnect the negative terminal after all connections have been made MOUNTING YOUR AMPLIFIER WARNING AMPLIFIERS GENERATE HEAT You can mount your amplifier in any position even upside down However airflow must be maintained Do not install your amplifier under carpets or behind airtight panels Le...

Page 9: ...e recommend that you install the correct size fuse holder combination to the main power cable within 18 inches of the battery This will protect your vehicle from fire damage due to a short circuit to the chassis or vehicle body If a single amplifier is installed follow the fuse recommendation below If installing multiple amplifiers add up the total fuse ratings of all installed amplifiers This sho...

Page 10: ...ard Mounted 4 Gauge Direct or Ring Terminal Power Ground Connector Blocks 24 Karat Gold Plated Solid Brass Circuit Board Mounted 10 Gauge Direct or Banana Plug Direct Speaker Connectors Tinted Plexiglas Circuit Board Viewing Panel Solid Billet CNC Machined End Panels with Adjustable Mounting Flanges SPECIFICATIONS Frequency Response 3 50 000 Hz Signal to Noise Ratio 102dB THD 0 02 Channel Separati...

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