Diamond D3 User manual

The D3 SeriesAmplifiers providea wide range of power andfeatures that make them an

excellent choice fora variety of car audio soundsystem configurations.

D3 Amplifiersuse an unregulated power supply forgood control of output power. This

power supply designhelps yield maximum power transfer witha minimum of heat loss.

On board noisefiltration is used to keep unwantednoise from leaking into the systemfrom the

amplifier. EachD3 amplifier comes complete with thermal,short, and load protection circuits

as well.

INTRODUCTION

The DiamondAudio D3 Series Amplifiers incorporatethe following features:

Full frequency responsewith low distortion and exceptional signal to noise performance.

Advanced circuitdesign that features stereo, mono andmixed mode operation for use in a

variety of systems.

Variable high-pass/low-passelectronic crossover witha 12 dB per octave slope and fully

adjustable range (55Hz~550 Hz).

Variable bassboost circuit toreinforce low frequency signals.

Adjustable inputlevel controls with ground loop isolation accepting a wide range of input

signals.

Remote turn-on with "soft start" mutingto prevent turn on "thump" .

Pulse-width modulated (PWM)MOSFET power supplywith low AM RFI and protection

circuits for overheatingand speaker shorts.

Nickel-plated input/output connectorsand an external automotive type fuse.

Aluminum heatsink for efficientheat dissipation.

Low profile, compactsize for space limited installs

TABLE OF CONTENTS

Description

Specifications

Power and SpeakerConnections

Input Connections andAudio Control

Setting the Gain

Setting the Crossover

Setting the BassBoost

Troubleshooting

System Diagrams

DESCRIPTION

1 2

The following figuresshow the power/outputend panels for each amplifier alongwith a key

to show thelayout of each amp.

All connectionsand controls for the D3Amplifiers are located on the endpanels.

Plated connections ensureexcellent conductivity and good looks. Easyto understand controls

make setting theamplifier up correctly an easy task.

SPECIFICATIONS

4 Ohm Stereo Output

2 Ohm Stereo Output

4 Ohm Mono Output

Frequency Response

Signal-to-Noise Ratio

THD

Input Sensitivity

High Level Input Sensitivity

Power Supply Operating Range

Dimensions

POWER AND SPEAKER CONNECTIONS

Fig.1 D3 400.2 123 4 5 6

1.Left Speaker Output

2.Right Front SpeakerOutput

3.Remote turn-on lnput

4.Ground lnput

5.Battery+12v lnput

6.40 Amp Fuse

Fig.2 D3 400.4

23 4 5 6

1.Left Front SpeakerOutput

2.Right Front SpeakerOutput

3.Remote Turn-on lnput

4.Ground lnput

5.Battery+12v lnput

6.40 Amp Fuse

7.Left Rear SpeakerOutput

8.Right Reart SpeakerOutput

132w@1%THD

210w@1%THD

420w@1%THD

20Hz~20KHz

>100dB

.05%

250mV~2.5V

500mV~5V

10.8V~15.6V

2 1/4" H x 8 1/2" W x 12" L

57w@1%THD

88w@1%THD

182w@1%THD

20Hz~20KHz

>100dB

.05%

250mV~2.5V

500mV~5V

10.8V~15.6V

2 1/4" H x 8 1/2" W x 13" L

D3 400.2 D3 400.4

The D3 SeriesAmplifiers providea wide range of power andfeatures that make them an

excellent choice fora variety of car audio soundsystem configurations.

D3 Amplifiersuse an unregulated power supply forgood control of output power. This

power supply designhelps yield maximum power transfer witha minimum of heat loss.

On board noisefiltration is used to keep unwantednoise from leaking into the systemfrom the

amplifier. EachD3 amplifier comes complete with thermal,short, and load protection circuits

as well.

INTRODUCTION

The DiamondAudio D3 Series Amplifiers incorporatethe following features:

Full frequency responsewith low distortion and exceptional signal to noise performance.

Advanced circuitdesign that features stereo, mono andmixed mode operation for use in a

variety of systems.

Variable high-pass/low-passelectronic crossover witha 12 dB per octave slope and fully

adjustable range (55Hz~550 Hz).

Variable bassboost circuit toreinforce low frequency signals.

Adjustable inputlevel controls with ground loop isolation accepting a wide range of input

signals.

Remote turn-on with "soft start" mutingto prevent turn on "thump" .

Pulse-width modulated (PWM)MOSFET power supplywith low AM RFI and protection

circuits for overheatingand speaker shorts.

Nickel-plated input/output connectorsand an external automotive type fuse.

Aluminum heatsink for efficientheat dissipation.

Low profile, compactsize for space limited installs

TABLE OF CONTENTS

Description

Specifications

Power and SpeakerConnections

Input Connections andAudio Control

Setting the Gain

Setting the Crossover

Setting the BassBoost

Troubleshooting

System Diagrams

DESCRIPTION

1 2

The following figuresshow the power/outputend panels for each amplifier alongwith a key

to show thelayout of each amp.

All connectionsand controls for the D3Amplifiers are located on the endpanels.

Plated connections ensureexcellent conductivity and good looks. Easyto understand controls

make setting theamplifier up correctly an easy task.

SPECIFICATIONS

4 Ohm Stereo Output

2 Ohm Stereo Output

4 Ohm Mono Output

Frequency Response

Signal-to-Noise Ratio

THD

Input Sensitivity

High Level Input Sensitivity

Power Supply Operating Range

Dimensions

POWER AND SPEAKER CONNECTIONS

Fig.1 D3 400.2 123 4 5 6

1.Left Speaker Output

2.Right Front SpeakerOutput

3.Remote turn-on lnput

4.Ground lnput

5.Battery+12v lnput

6.40 Amp Fuse

Fig.2 D3 400.4

23 4 5 6

1.Left Front SpeakerOutput

2.Right Front SpeakerOutput

3.Remote Turn-on lnput

4.Ground lnput

5.Battery+12v lnput

6.40 Amp Fuse

7.Left Rear SpeakerOutput

8.Right Reart SpeakerOutput

132w@1%THD

210w@1%THD

420w@1%THD

20Hz~20KHz

>100dB

.05%

250mV~2.5V

500mV~5V

10.8V~15.6V

2 1/4" H x 8 1/2" W x 12" L

57w@1%THD

88w@1%THD

182w@1%THD

20Hz~20KHz

>100dB

.05%

250mV~2.5V

500mV~5V

10.8V~15.6V

2 1/4" H x 8 1/2" W x 13" L

D3 400.2 D3 400.4

INPUT CONNECTIONS AND AUDIO CONTROL

The following figuresshow the input/audio control end panelsfor each amplifier along with

a key toshow the layout.

1.RCA lnput jacks

2.Gain Control

3.Bass Boost Control

4.Crossover Frequency

5.X-Over Mode Switch

6.RCA Output Jacks

7.Power lndicator

Fig.3 D3 400.2

23456

Fig.4 D3 400.4

23456

7 8 9 10

1.Front RCA lnputjacks

2.Rear RCA lnputjacks

3.Front Gain Control

4.Rear Gain Control

5.Bass Boost Control

6.Channel lnput Selector

7.Front X-Over FrequncySelection

8.Front X-Over Mode Switch

9.Rear X-Over FrequncySelection

10.Rear X-Over Mode Switch

11.Power lndicator

Gain Control Allows the nominaloperating level of the amplifier tobe set in conjunction

with the levelof input voltage from the sourceunit. The D3amplifiers will accommodate

low level (RCA)input ranging from 500 mV~5 V.

Bass Boost Acts like anequalizer with an adjustable gain fixedat 45 Hz. This adjustment

gives you upto 18 dB of boost atthat frequency. This can beused to compensatefor lack

of low-frequency responsein the car audio environment.

Crossover Frequency Selection The crossover frequencyis fully adjustable between

55 Hz and550 Hz.

Crossover Mode Switch Switches crossover betweenoff, low-pass, orhigh-pass.

When in theLP or HPposition, a 12dB per octave slope is implementedat the frequency

selected on theFrequency Knob.

Input Mode Switch Sets the inputmode of the amplifier, dependingon its purpose in the

system. Can beset to Stereo Mode, Bridged Mode,or Mono Mode.

Rear Channel InputSelect (4 channel only) Allows channels 3& 4 to use either setof

inputs (front orrear) for signal.

Problem

No AudioOutput

Solution

Low or noturn-on voltage. Check remote connections atamp and head unit.

Check remote voltageat amp with multi-meter, thereshould be around 12 volts when

head unit ison.

SETTING THE GAIN

The best wayto set thegains on any amplifier is withan oscilloscope and test tone. Using

the scope willensure the amplifier is not clippingand protect your system from beingdamaged

from being overdriven. If you havean oscilloscope and need help usingit, feel free to call DAT

TechnicalSupport for help.

Another wayis with a multi-meter and testtone. Set the multi-meter to DCvoltage, play

the test toneat 75% volume. Tune gains up until DCvoltage is present, then back thegains back

down a little.

If an oscilloscope,multi-meter, or test tone isnot available, find out the outputsignal

voltage of thehead unit. Match the gain knobwith that amount of voltage. Itshould be

between 500 mVand 5 V. If it is above 5V, the head unit has too muchsignal and the amp will

clip even withthe gain set at minimum. Turn system onand volume to 75%, if thereis

noticeable distortion, gainsshould be tuned down some.

SETTING THE CROSSOVER

Select LP orHP using theCrossover Mode Switch,select desired frequency by turning the

Frequency Knob.

SETTING THE BASS BOOST

If there isa noticeable lack of low endfrequency, thebass boost can be used toraise the

level of bassin the system. Turn the system on tonormal listening levels and raise thebass boost

until the levelof bass is satisfactory.

Caution: If "popping", "crackling" ,or any other unusualnoise is heard from the system

when using thebass boost, immediately turn the boostdown to avoid damaging components

in the system. Also, ifthe bass sounds "muddy" or distorted,turn the bass boost down.

TROUBLESHOOTING

Blown Fuse. Checkboth main system fuse and amplifier fuse. If blown,replace with

fuse of sametype and rating.

Speaker lead shorted. Check all speaker wire to makesure they are not shorted out

somewhere.

Blown speakers. Checkspeaker impedance with multi-meter, if the woofer isblown,

it will reada dead short.

Problem

Amplifier cycleson and off.

Solution

Thermal protection circuitsare shutting the amplifier off. Checklocation of amplifier

for adequate ventilation. Check impedance at amplifier for correctload. Check

voltage at amplifierfor low voltage.

Loose Connections. Check all power and signal wires to make sure theyhave solid

connection.

INPUT CONNECTIONS AND AUDIO CONTROL

The following figuresshow the input/audio control end panelsfor each amplifier along with

a key toshow the layout.

1.RCA lnput jacks

2.Gain Control

3.Bass Boost Control

4.Crossover Frequency

5.X-Over Mode Switch

6.RCA Output Jacks

7.Power lndicator

Fig.3 D3 400.2

23456

Fig.4 D3 400.4

23456

7 8 9 10

1.Front RCA lnputjacks

2.Rear RCA lnputjacks

3.Front Gain Control

4.Rear Gain Control

5.Bass Boost Control

6.Channel lnput Selector

7.Front X-Over FrequncySelection

8.Front X-Over Mode Switch

9.Rear X-Over FrequncySelection

10.Rear X-Over Mode Switch

11.Power lndicator

Gain Control Allows the nominaloperating level of the amplifier tobe set in conjunction

with the levelof input voltage from the sourceunit. The D3amplifiers will accommodate

low level (RCA)input ranging from 500 mV~5 V.

Bass Boost Acts like anequalizer with an adjustable gain fixedat 45 Hz. This adjustment

gives you upto 18 dB of boost atthat frequency. This can beused to compensatefor lack

of low-frequency responsein the car audio environment.

Crossover Frequency Selection The crossover frequencyis fully adjustable between

55 Hz and550 Hz.

Crossover Mode Switch Switches crossover betweenoff, low-pass, orhigh-pass.

When in theLP or HPposition, a 12dB per octave slope is implementedat the frequency

selected on theFrequency Knob.

Input Mode Switch Sets the inputmode of the amplifier, dependingon its purpose in the

system. Can beset to Stereo Mode, Bridged Mode,or Mono Mode.

Rear Channel InputSelect (4 channel only) Allows channels 3& 4 to use either setof

inputs (front orrear) for signal.

Problem

No AudioOutput

Solution

Low or noturn-on voltage. Check remote connections atamp and head unit.

Check remote voltageat amp with multi-meter, thereshould be around 12 volts when

head unit ison.

SETTING THE GAIN

The best wayto set thegains on any amplifier is withan oscilloscope and test tone. Using

the scope willensure the amplifier is not clippingand protect your system from beingdamaged

from being overdriven. If you havean oscilloscope and need help usingit, feel free to call DAT

TechnicalSupport for help.

Another wayis with a multi-meter and testtone. Set the multi-meter to DCvoltage, play

the test toneat 75% volume. Tune gains up until DCvoltage is present, then back thegains back

down a little.

If an oscilloscope,multi-meter, or test tone isnot available, find out the outputsignal

voltage of thehead unit. Match the gain knobwith that amount of voltage. Itshould be

between 500 mVand 5 V. If it is above 5V, the head unit has too muchsignal and the amp will

clip even withthe gain set at minimum. Turn system onand volume to 75%, if thereis

noticeable distortion, gainsshould be tuned down some.

SETTING THE CROSSOVER

Select LP orHP using theCrossover Mode Switch,select desired frequency by turning the

Frequency Knob.

SETTING THE BASS BOOST

If there isa noticeable lack of low endfrequency, thebass boost can be used toraise the

level of bassin the system. Turn the system on tonormal listening levels and raise thebass boost

until the levelof bass is satisfactory.

Caution: If "popping", "crackling" ,or any other unusualnoise is heard from the system

when using thebass boost, immediately turn the boostdown to avoid damaging components

in the system. Also, ifthe bass sounds "muddy" or distorted,turn the bass boost down.

TROUBLESHOOTING

Blown Fuse. Checkboth main system fuse and amplifier fuse. If blown,replace with

fuse of sametype and rating.

Speaker lead shorted. Check all speaker wire to makesure they are not shorted out

somewhere.

Blown speakers. Check speaker impedance with multi-meter, if the woofer isblown,

it will reada dead short.

Problem

Amplifier cycleson and off.

Solution

Thermal protection circuitsare shutting the amplifier off. Checklocation of amplifier

for adequate ventilation. Check impedance at amplifier for correctload. Check

voltage at amplifierfor low voltage.

Loose Connections. Check all power and signal wires to make sure theyhave solid

connection.

If you haveany questions or need added helpwith your new D3 Amplifier, please feelfree

to call DiamondTechnicalSupport at 1-866-328-2834.

SYSTEM DIAGRAMS

Low HIGH FULL

Fig.5 In this application the amplifier is bridged for mono operation to drive a subwoofer

The DiamondAudio D3 400.2(Fig.5to 7)and D3 400.4(fig.8 to 13)2and 4-channel car audio

amplifiers can beused in a variety of systemapplications.Here are some examples to plan

your own installation

Problem

Amplifier fusekeeps blowing.

Solution:

Check all powerand signal wires for a short. Make sure powerand ground wires are

correctly connected tothe amp.

Problem

Whining, ticking, orany other unwanted noise present insystem when engine is

running.

Solution

Amplifier maybe picking up alternator or radiatednoise. Make sure all signal wires

are separated frompower wires. Check all signal andpower wires for a sold

connection. Check allground wires to make sure theyhave a solid ground.

Check alternator and/orvoltage regulator for solid connections. Checkbattery for

adequate voltage andconnection.

Problem

Distorted audio.

Solution

Check that gainsare set correctly. Inspect speakersfor damaged cones or bad

voice coils.

Bridged-Mono Subwoofer System

2-Channel Full-Range, Satellite, of Subwoofer Stereo System

Set X-Over Mode to FULL

Low HIGH FULL

Set X-Over Mode toFULL

ADJUST FREQ to speaker

Specifications

Set X-Over Mode toLOW

ADJUST FREQ to speaker

Specifications

Fig.6 In this application, the amplifier is used in stereo and drives two full-range (or satellite or

subwoofer) speakers. NOTE A passive crossover must be used with satellite speakers.

D3 400.2

5 6

If you haveany questions or need added helpwith your new D3 Amplifier, please feelfree

to call DiamondTechnicalSupport at 1-866-328-2834.

SYSTEM DIAGRAMS

Low HIGH FULL

Fig.5 In this application the amplifier is bridged for mono operation to drive a subwoofer

The DiamondAudio D3 400.2(Fig.5to 7)and D3 400.4(fig.8 to 13)2and 4-channel car audio

amplifiers can beused in a variety of systemapplications.Here are some examples to plan

your own installation

Problem

Amplifier fusekeeps blowing.

Solution:

Check all powerand signal wires for a short. Make sure powerand ground wires are

correctly connected tothe amp.

Problem

Whining, ticking, orany other unwanted noise present insystem when engine is

running.

Solution

Amplifier maybe picking up alternator or radiatednoise. Make sure all signal wires

are separated frompower wires. Check all signal andpower wires for a sold

connection. Check allground wires to make sure theyhave a solid ground.

Check alternator and/orvoltage regulator for solid connections. Checkbattery for

adequate voltage andconnection.

Problem

Distorted audio.

Solution

Check that gainsare set correctly. Inspect speakersfor damaged cones or bad

voice coils.

Bridged-Mono Subwoofer System

2-Channel Full-Range, Satellite, of Subwoofer Stereo System

Set X-Over Mode to FULL

Low HIGH FULL

Set X-Over Mode toFULL

ADJUST FREQ to speaker

Specifications

Set X-Over Mode toLOW

ADJUST FREQ to speaker

Specifications

Fig.6 In this application, the amplifier is used in stereo and drives two full-range (or satellite or

subwoofer) speakers. NOTE A passive crossover must be used with satellite speakers.

D3 400.2

5 6

Mixed-Mode Satellite and Subwoofer System

Set X-Over Mode to FULL.

Low HIGH FULL

NOTE Chart values based on 4 ohm speakers.

Fig.7 The amplifier can be configured for a mixed-mode operation. The table provides

component values to create a 6dB per octave crossover at specified frequencies. Use components

that have a 5% tolerance and capacitors rated at 100V. NOTE Choose the same frequency for

both LP and HP crossovers. Do not overlap frequencies, as this may damage the amplifier.

Fig.8 Electrical connections for the D3 400.2

D3 400.2

Mixed-Mode Satellite and Subwoofer System

Set X-Over Mode to FULL.

Low HIGH FULL

NOTE Chart values based on 4 ohm speakers.

Fig.7 The amplifier can be configured for a mixed-mode operation. The table provides

component values to create a 6dB per octave crossover at specified frequencies. Use components

that have a 5% tolerance and capacitors rated at 100V. NOTE Choose the same frequency for

both LP and HP crossovers. Do not overlap frequencies, as this may damage the amplifier.

Fig.8 Electrical connections for the D3 400.2

D3 400.2

D3 400.4

SOURCE

2CH BASS

2CH 4CH

LOW

HIGH

FULL LOW

HIGH

FULL

Fig.9 ln this application, the D3 400.4 was used as a 4-channel amplifier to drive four

full-range speakers in stereo.

SOURCE

2CH BASS

2CH 4CH

LOW

HIGH

FULL LOW

HIGH

FULL

D3 400.4

Fig.10 ln this 4-channel system, the D3 400.4 drives a pair of statellites and a pair of

subwoofers. Note the filter settings.

4-Channel Stereo System

2-Channel High-Pass. 2-Channel Low-Pass

910

D3 400.4

SOURCE

2CH BASS

2CH 4CH

LOW

HIGH

FULL LOW

HIGH

FULL

Fig.9 ln this application, the D3 400.4 was used as a 4-channel amplifier to drive four

full-range speakers in stereo.

SOURCE

2CH BASS

2CH 4CH

LOW

HIGH

FULL LOW

HIGH

FULL

D3 400.4

Fig.10 ln this 4-channel system, the D3 400.4 drives a pair of statellites and a pair of

subwoofers. Note the filter settings.

4-Channel Stereo System

2-Channel High-Pass. 2-Channel Low-Pass

910

SOURCE

2CH BASS

2CH 4CH

LOW

HIGH

FULL LOW

HIGH

FULL

D3 400.4

Fig.11 The D3 400.4 can alse be used to drive a pair of stereo satellites and a single mono

subwoofer. Note the filter settings

Bridged Mono Channel

2-Channel Stereo System with Low-pass

D3 400.4

2-Channel High Power Systems (Satellite or Subwoofer)

SOURCE

2CH BASS

2CH 4CH

LOW

HIGH

FULL LOW

HIGH

FULL

SOURCE

2CH BASS

2CH 4CH

LOW

HIGH

FULL LOW

HIGH

FULL

Fig.12 The D3 400.4 can also be set up as a 2-channel high-power amplifier to drive a pair of

satellites (or subwoofers).

11 12

SOURCE

2CH BASS

2CH 4CH

LOW

HIGH

FULL LOW

HIGH

FULL

D3 400.4

Fig.11 The D3 400.4 can alse be used to drive a pair of stereo satellites and a single mono

subwoofer. Note the filter settings

Bridged Mono Channel

2-Channel Stereo System with Low-pass

D3 400.4

2-Channel High Power Systems (Satellite or Subwoofer)

SOURCE

2CH BASS

2CH 4CH

LOW

HIGH

FULL LOW

HIGH

FULL

SOURCE

2CH BASS

2CH 4CH

LOW

HIGH

FULL LOW

HIGH

FULL

Fig.12 The D3 400.4 can also be set up as a 2-channel high-power amplifier to drive a pair of

satellites (or subwoofers).

11 12

Fig.13 The amplifier can be configured for a mixed-mode operation on either channels 1/2 or 3/4

amplifier sections. The table provides component values to create a 6dB per octave crossover at

specified frequencies. Use the same frequency for both LP and HP crossovers. Do not overlap

frequencies, as this may damage the amplifier.

SOURCE

2CH BASS

2CH 4CH

LOW

HIGH

FULL LOW

HIGH

FULL

D3 400.4

NOTE Chart values based on 4 ohm speakers.

Speakers On Front

Mixed-Mode System On Rear Full-Range

Fig.14 Electrcal connections for the D3 400.4

D3 400.4

13 14

Fig.13 The amplifier can be configured for a mixed-mode operation on either channels 1/2 or 3/4

amplifier sections. The table provides component values to create a 6dB per octave crossover at

specified frequencies. Use the same frequency for both LP and HP crossovers. Do not overlap

frequencies, as this may damage the amplifier.

SOURCE

2CH BASS

2CH 4CH

LOW

HIGH

FULL LOW

HIGH

FULL

D3 400.4

NOTE Chart values based on 4 ohm speakers.

Speakers On Front

Mixed-Mode System On Rear Full-Range

Fig.14 Electrcal connections for the D3 400.4

D3 400.4

13 14

LIMITED WARRANTY STATEMENT

Diamond Audio Technology, Inc. (DAT) warrants all DAT products to be

free of defects in material and workmanship for a period of one (1) year from

the date of original purchaseprovided they are purchased froman authorized

DAT retailer inthe United States. However,the effective warranty period will

be three (3) years if the products were purchased from and installed by an

authorized DAT reta iler.

What is covered: Parts and labor toeffect repair or,at the sole discretion

of DAT, replacement of either any malfunctioning or defective part(s) or the

entire system should the system or any component part(s) thereof fail to

perform as designed. Includes return freight via ground transportation to

destinations within the United Stat es .

What is NOT covered: Installation orsetup and repair or replacement of

the system or any parts thereof which, in DAT's judgment, fail or become

damaged as a result of negligence, improper use, abuse, unauthorized

modification or service, improper orinadequate packaging during shipment,

installation by a non-authorized dealer, accident, or use for any purpose

other than those forwhich this product wasoriginally intended, or wherethe

model's serial number has been removed, altered or def aced.

Who is covered: Original purchaser so long as they reside in the United

States and can provide proof of the original date of purchase

(e.g., store receipt) from an authorized DAT retailer.

OUTSIDE THE UNITED STATES

Customers outside the United States should contact their local sales

office to obtain informationon prices, exchange unit availability, instructions,

serv ice and warranty/non-warrant y repairs.

Repair or replacement under this warranty is the exclusive remedy of

the consumer. DAT shall not be liable for any incidental or consequential

damages for breach ofany expressed or implied warranty on this product.

Except to the extent prohibited by applicable law, any implied warranty of

merchantability or fitnessfor a particular purpose on this product is limited

in duration to the duration of this warranty. Some states do not allow the

exclusion or limitation of incidental or consequential damages, or allow

limitations on how long an implied warranty lasts, so the above limitations

or exclusions may not apply to you. This warranty gives you specific legal

rights and youmay also haveother rights thatmay vary fromstate to state.

HOW TO OBTAIN WARRANTY SERVICE

In theevent a DAT product should require servicing, you

should (a) visit an authorized DAT retailer or (b) call the DAT

Service Dept. at (866)328 2834. To be eligible for warranty

service within a three (3) year period, the accompanying

receipt of original purchase from an authorized DAT retailer

must specifically note that dealer installation was provided.

Product returned for repair/service must be properly

packaged and clearly marked with the Return Authorization

(RA) number issued by DAT. If the RA number is not clearly

marked on the package or no RA number was issued by DAT,

the product may be refused upon delivery. DAT does not

assume responsibility for lost or misdirected product.

400.2 & 400.4

DIAMOND

AUDIO TECHNOLOGY

Owner's Guide

Serial Number

Date of Purchase

DIAMOND

AUDIO TECHNOLOGY

Listen as the

Artist Intended

www.diamondaudio.com

Head Office

410 5. Benson Lane

Chandler, AZ 85224

Tel 480-813-6200

Fax 480-813-6210

Service/TechSupport

TollFree 1-886-328-2834

[email protected]

www.diamondaudio.com

LIMITED WARRANTY STATEMENT

Diamond Audio Technology, Inc. (DAT) warrants all DAT products to be

free of defects in material and workmanship for a period of one (1) year from

the date of original purchaseprovided they are purchased froman authorized

DAT retailer inthe United States. However,the effective warranty period will

be three (3) years if the products were purchased from and installed by an

authorized DAT reta il er.