Diamond Audio MICRO8 Series User manual

AMPLIFIERSAMPLIFIERS
MICRO8 SeriesMICRO8 Series

Installation
Introduction
3
Diamond Audio Amplifiers
Thank you for purchasing a Diamond Audio amplifier for your car audio system. You
have chosen Diamond Audio because you deserve the best!
Diamond Audio amplifiers are designed and engineered to the highest quality standards
in the industry to create the ultimate listening experience in your vehicle. For optimal performance
of this product, it is highly recommended that you have your new amplifier installed by an
authorized Diamond Audio dealer. Our authorized dealers have the necessary experience
and installation equipment to ensure that your amplifier will deliver maximum performance and
explain all the details pertaining to our warranty coverage as well.
If you decide to install the amplifier by yourself, please thoroughly read through this manual
before getting started. This manual will help familiarize yourself with this amplifier and guide
you through the installation process and procedures.
Please contact your local authorized Diamond Audio dealer if you have any questions
regarding the instructions in this manual or the amplifier’s operation capabilities. If you require
additional assistance, please contact the Diamond Audio Technical Support Department
during business hours at 213-212-3187 (Pacific Standard Time)
POWER RATINGS





MICRO81U
600 W RMS
600 W X 1
400 W X 1
600 W
400 W
240 W
MICRO82U
600 W RMS
300 W X 2
200 W X 2
N/A
N/A
500 W X 1
MICRO84U
550 W RMS
N/A
N/A
300 W X 2
Full Range Class D IR Chipset
DirectFET Power Mosfet Output Stage
SMD Technology on 4 layer Glass PC Board
Conformal Coated PCB assembly for added water resistance
ICAD circuit provides superior overload protection
Frequency response 10 Hz – 30kHz (Mono Block 10 Hz – 350Hz)
Variable 12db crossovers
MICRO Bass boost +12DB @45HZ
Premium 8 gauge power connections
Multi channels / Mono channel
Remote Bass Knob (Included with MICRO81U/MICRO82U)
5 Channel has separate Front/Rear/Sub input - Perfect for DSP
MICRO85U
1035 W RMS
N/A
375 W (SUB CH)
200 W X 1 (SUB CH)
FEATURES
165 W X 4
85 W X 1
165 W X 4
90 W X 1
MICRO88U
1000 W RMS
N/A
375 W
200 W X 1
165 W X 4
85 W X 1
We reserve the right to change the products and specifications at any time without notice.
Images may or may not include optional equipment.

WARNING: Prolonged exposure to sound pressure levels in excess of 100dB can cause permanent hearing loss.
Diamond Audio amplifiers can exceed that level so please exercise restraint when listening and enjoying your new amplifier.
GENERAL PRECAUTIONS
•This unit is designed for negative ground 12V DC operation only.
•Total system impedance must not be less than 2 ohms stereo, or 1 ohm bridged for MICRO81U. MICRO85U is minimum
2 ohms bridged on sub channel (Ch5), and the MICRO84U/MICRO85U (Ch 1, 2, 3, 4) is 4 ohms bridged
•Avoid installing the unit where:
- It would be subject to high temperatures, such as from direct sunlight or hot air from the heater.
- It would be exposed to rain or moisture.
- It would be subject to dust or dirt.
•Do not cover the unit with carpet or wires.
•Do not use the unit with a weak auto battery. Optimum performance depends on a normal battery supply voltage.
•For safety reasons, keep the volume of your car audio system moderate while driving your vehicle so that you can still hear
normal traffic sounds outside your car.
•There is NO speaker level input connector, you can cut RCA’s and solder the wires and connect directly thru low level input (RCA)
or purchase the “optional” RCA Adaptor cable to make a cleaner install, model - CHHILVL
MOUNTING PRECAUTIONS
Although Diamond Audio amplifiers incorporate heat sinks and protection circuits, mounting the amplifier in a tight space
without any air movement can still damage internal circuitry over time. Choose a location that provides adequate ventilation
around the amplifier. For easy system set-up, mount the amplifier so the side panel controls will be accessible after
installation. To increase thermal run times on low impedance loads, an additional fan is recommended, remember any moving
air across the amplifier will reduce heat. In addition, observe the following precautions:
1. Using a felt pen mark the mounting hole locations.
2. Mounting the amplifier on carpet will significantly reduce air flow, resulting in reduced thermal run times.
3. Mount the amplifier on a solid surface. Avoid mounting to sub woofer enclosures or areas prone to vibration. Do not install
the amplifier on plastic or other combustible materials.
4. Prior to mounting the amplifier, make sure not to cut or drill into the fuel tank, fuel lines, brake lines (under chassis) or
electrical wiring.
WIRING PRECAUTIONS
1. Before installation, make sure the source unit power switch is in the OFF position.
2. Disconnect the negative (-) lead of the battery before making any power connections.
3. When making connections, be sure that each one is clean and secure. Insulate all of your connections. Failure to do so
may damage your equipment.
4. A secure clean ground connection is critical to the performance of your amplifier. Connect the ground directly to the car
chassis to minimize resistance and avoid any noise problems.
5. Add an external fuse on the amplifier’s positive (+) power lead and connect it as close as possible to the vehicle’s (+)
battery terminal. Use a rating that equals the total current consumption at full output of all amplifiers in the system. This
external fuse will protect the vehicle from short circuits that can cause a fire.
INSTALLATION - Pre Planning Section
4

5
FEATURES
10 13
10 13
10
11 1
45
237
54 5 12 4
37 28 7
10 13
11 1
5
6
122
73
2 4 2 19 4
257 3 77
10 13 1010
2
2
1
4
9
4
2
7
7
7
7
2 2
5 5
10 10 1010 13

This light indicate’s when the amplifier is powered up normally and when there is a protection fault. The Protect
LED is illuminated when there is a problem with your amplifier. Please contact your authorize Diamond Audio dealer or call Diamaond
Audio’s technical support.
1
This switch allows you to select the crossover Type. Use High Pass (HP) for midrange or high
frequency speakers. Use Low Pass (LP) for subwoofers. In the FLAT position, crossover adjustment knob has no affect and all
speakers will receive the full frequency range.
4
This control matches the preamp stage of the Diamond Audio amplifier to your source
unit. This is NOT a volume control. The range is between approx. 200mV to 10V. It can ALSO handle speaker inputs of less than 25 watts
RMS (typical OEM headunits are LESS than 25 W RMS...but NOT all)
2
The MICRO series of amplifiers can be switched on and off using one of three methods, determined by the
position of the amplifier’s: Turn-On Mode” switch. Please read the “Set-Up” portion of this guide and determine which is best suited for
your specific system. NOTE: DC and VOX turn-on settings ONLY work with speaker level input.
3
Use this adjustment to ADJUST the crossover type. Remember that you must select the High Pass position (HP) or
the Low Pass (LP) or FULL range position of the crossover adjustment switch first. The range of adjustment is limited between
40-400 Hz (MICRO81U/MICRO84U) and 70 Hz front and rear FIXED on MICRO85U. Or FULL which passes ALL frequencies.
5
This control adds 0 to +12dB of boost at 45Hz. Be cautious when adding boost to some subwoofer systems
as they may not be able to handle the additional low frequency boost. In the 0dB position, no bass boost is added.
6
The RCA jacks allow for a normal Left and Right channel signal input. Simply connect to the source unit
using RCA type audio cables, keeping them away from power wiring wherever possible to reduce risk of noise.
7
8(MICRO84U ONLY) Use this switch when you are using a stereo input ONLY, and would like all 4 output
channels on the MICRO84U to have signal/power output. Or when bridging stereo the MICRO84U to make a BIG 2 channel high pass or a
stereo subwoofer amplifier (4 Ohms only, stereo OR bridged).
Connect your speakers to these terminals. Stereo connections are connected as labeled. Bridged
connections use the LEFT + and RIGHT - as the two connections. The 2 and 4 channel amplifiers will perform into 2 Ohm stereo loads or
4 Ohm bridged loads. DO NOT run 2 Ohm bridged loads on MICRO82U/MICRO84U amplifiers! The MICRO81U mono block 1 Ohm mono,
MICRO85U sub channel 2 Ohms minimum.
10
MICRO81U/MICRO82U amplifer have this port and is for the remote level control (included).
The control is intended to allow the user to control the level of gain up to the maximum adjustment level set on the amplifier. The control
does not add additional boost, it only attenuates the setting that is fixed at the amplifier’s control panel.
11
9(MICRO85U ONLY) Use this switch when you are bridging stereo the front 4 channels to be a big 3 channel
amplifier. Use the Front positive (+) and the Rear negative (-) for the bridged output (4/2 ohms ONLY!).
This control is ONLY on the MICRO81U and allows you to remove the unwanted sub-sonic frequencies below
the tuning frequency of a ported enclosure. This helps to protect the woofer from over excursion.
12
These connections are for input power, chassis ground, and remote turn-on. Use a minimum of 8 gauge
wiring for power and ground connections. 4 Gauge is recommended for the mono block. The terminals will handle up to 8 gauge wiring
with no problem whatsoever (4 gauge on the mono block). Be sure any wiring that passes through metal has a grommet!
13
6
FEATURES

INSTALLATION
7
VEHICLE ELECTRICAL SYSTEM:
Amplifiers (regardless of brand name) will put an increased load on the vehicle's battery and charging
system. Diamond Audio recommends checking your alternator and battery condition to ensure that the
electrical system has enough capacity to handle the increased load of your stereo system. Original
equipment electrical systems, which are in good condition, should be able to handle the extra load of any
Diamond Audio amplifier without problems, although battery and alternator life can be reduced depending
on your individual listening habits.
WARNING:
Avoid running power wires near the low level input cables, antenna, sensitive equipment or harnesses.
The power wires carry substantial current and could radiate noise into the audio system through the
audio cables.
INSTALLATION:
1. Plan the wire routing. Keep RCA cables close together but isolated from the amplifier's power cables and
any high power auto accessories, especially electric motors. This is done to prevent coupling the noise from
radiated electrical fields into the audio signal. When feeding the wires through the firewall or any metal
barrier, protect them with plastic or rubber grommets to prevent short circuits. Leave the wires long at this
point to adjust for a precise fit at a later time.
2. Prepare the power wire for attachment to
the amplifier by stripping 5/8 inch (15.9mm)
of insulation from the end of the wire. Insert
the bare wire into the B+ terminal and
tighten the set screw to secure the cable
in place.
WARNING:
The B+ cable MUST be fused 18" or less from
the vehicle's positive battery post. Choose a
location to install a waterproof fuse holder
under the hood and ensure connections are
watertight. If you do not use the appropriate
fuse holder, the connection will eventually
suffer corrosion from moisture and heat.
3. Trim the power cable within 18 inches
(45.7mm) of the positive battery post and
splice in an in-line fuse holder. DO NOT
install the fuse at this time.
4. Strip 1/2 inch (12.7mm) from the battery end
of the power cable. Crimp and soldier a large
ring terminal to the cable. Connect the ring
terminal tothe positive (+) battery post.

5. Prepare the ground wire for attachment to the amplifier by stripping 5/8” of insulation from the end of the wire. Always
use a wire of the same gauge as the power connection, never smaller. Insert the bare wire into the GND terminal and
tighten the set screw to secure the cable in place. Prepare the chassis ground by scraping any paint from the metal surface
and thoroughly clean the area of all dirt and grease. Strip the other end of the wire, crimp and soldier a ring connector.
Fasten the cable to the chassis using a non-anodized screw with a star washer and a nut.
WARNING: It is important to upgrade the ground
connection between the negative (-) battery post and the
vehicle body or chassis to achieve optimum electrical
performance.
6. Prepare the REMOTE turn-on wire for attachment to the
amplifier by stripping 5/8 inch (15.9mm) of insulation
from the end of the wire. Insert the bare wire into the
REM terminal and tighten the set screw to secure the wire
in place. Connect the other end of the REM wire to a switched
12 volt positive source. The switched voltage is usually taken
from the source unit’s remote amp turn on lead. If the source
unit does not have this output available, the recommended
solution is to wire to an accessory terminal in the car’s fuse
block using a relay to isolate the amplifer from the vehicles
accessory circuit. This however will turn the amplifier on and
off with the ignition key, regardless of whether the car stereo
is on or off (NOTE: this can casue turn-on/off thumps/bangs.pops).
7. Securely mount the amplifier to the vehicle or amp rack. Be careful not to mount the amplifier on cardboard or plastic
panels. Doing so may enable the screws to pull out from the panel due to road vibration or sudden vehicle stops.
8. Connect from source signal by connecting the RCA audio cables to the input jacks at the amplifier.

9. Connect the car speakers. Speakers impedance should never be less than 2 Ohms stereo, 4 Ohms bridged (the mono block
is stable into 2 ohms). For most applications 18 gauge wire is adequate for the speaker leads. For leads in excess of ten
feet, 16 gauge wire is recommended. When wiring the speakers, pay careful attention to the polarity of the
terminals on the speakers and make certain they correspond to the polarity on the amplifier. DO NOT chassis ground any
of the speaker leads as unstable operation or damage to the amplifier and/or speaker may result.

MICRO81U = 25A
MICRO82U = 25A
MICRO84U = 40A
MICRO85U = 60A
MICRO88U = ?
INSTALLATION
8
ESC
VIEW
BAND SOURCE
AUDIO
MUTE FUNC
TAG
Battery
HEAD UNIT

SET UP
Placing the x-over switch in the FULL position (MICRO82U/MICRO84U) sets the amplifier to Full Range. This setting allows
ALL frequencies to pass to the speakers. With the MICRO82U/MICRO84U, Placing the switch in the HP or LP position
activates the 12dB crossover, adjustable from 40Hz - 400Hz. . The MICRO81U mono
is dedicated for Low Pass (LP) only with an adjustable frequency from 40Hz - 400Hz.
The MICRO85U (5 channel) amplifier offers full range (FULL) or high pass (HP)
selector switch for channels 1-4. Selecting the high pass (HP) will activate a fixed
70Hz cross over for full range speakers. Channel 5 (on MICRO85U) is dedicated for
subwoofers only but offers an adjustable (LP) crossover from 25Hz – 250Hz.
Placing the switch in the HP position sets the amplifier to the High Pass Filter mode,
enabling frequencies above the cutoff point to pass. Placing the switch in the LP
position sets the amplifier to the Low Pass Filter mode, enabling frequencies below the cutoff point to pass. For system
tuning begin with the frequency set at approximately 80Hz and fine tune up or down based on music choice and input level.
To adjust the gain setting, turn the amplifier gains all the way down (counterclockwise). If using a remote level control
(MICRO81U/MICRO82U), plug the level control into the amplifier and turn it to about "HALF-WAY" (approx. the 12 O'clock
position) this setups the bass boost so you can turn it UP...OR...turn it UP or DOWN when playing different music styles.
Next turn the source unit volume up to almost full volume (usually about 2/3rds of the way up) or until the output starts to
distort on an oscilloscope. This will be NEARLY full volume on some source units, perhaps one or two "clicks" down from
maximum volume. Next, increase the amplifier gain setting until adequate volume is achieved, or until distortion is audible
and then turn it down a bit until the distortion is inaudible.
NOTE: Ideal signal to noise and dynamic range are achieved with the gain at minimum. Most users find adequate gain and
volume is achieved at less than halfway in the adjustment range. Avoid setting the amplifier gain very high as noise and
distortion will increase significantly. For a more in depth level setting (gain adjustment) procedure, visit the Diamond Audio
website.
The HP or LP crossover adjustment can now be fine tuned. If you are using the amplifier in a HP configuration and would
like the system to be a little bit louder you can increase the HP Filter frequency and reset the "Gain" of the amplifier. Raising
the HP frequency up to high however will cause a loss of mid range and bass. If you are using the amplifier in a LP filter
configuration and you hear voice or vocals coming from your subwoofer system you can turn the LP Filter frequency down
(lower).
After setting the input gain adjustment and crossover, you may choose to add a small amount of "Bass Boost" (MICRO81U)
in the low frequency region. Remember that the Bass Boost feature will not fix a poorly designed subwoofer enclosure or
subwoofers that didn't sound good to begin with.
1. Make sure any bass EQ or low frequency equalization from the source unit is set to OFF or FLAT.
2. While playing the same musical selections used during the gain setting process, slowly increase the level of the Bass
EQ. You should be able to notice a change between 0 and +12dB. If you do not notice much difference, then it will
not serve any benefit to increase the boost further.
3. If the boost has audible benefits without adding appreciable distortion, find a level that suits your taste. Remember: it's
much easier to construct the right subwoofer enclosure for your listening preferences than relying on a bass boost
control to do the job!
9

SYSTEM CONFIGURATIONS
(CHECK BTR MANUAL FOR WIRING)
TURN-ON OPTIONS - configure the “Turn-On Mode” switch for desired turn-on trigger. There are 3 modes available
on the MICRO series amplifier, REM, DC and VOX. (REM) is the standard 12V trigger wire (DC) or DC offset (when
connected high level in, this will sense differences in ground in your wiring through the speaker leads and turn on amplifier),
VOX (signal sensing) will sense any kind of signal input into the amplifier RCA turning on the amplifier. The most preferred
and reliable method is using the REM setting with a 12V trigger wire connected to the vehicles headunit switch ouput and
will provide instant on and off for the amplifier. VOX and DC will provide turn on capabilities for the amplifier when a 12V
trigger wire is not available. These methods will have some delay in turning the amplifier on and off.
OPTIONAL SOURCE - BLUETOOTH RECEIVER (BTR9/10/12) SETUP
The BTR will pair to your phone (or any selected Bluetooth device) and will allow playback through the amplifier to
speakers giving you unlimited install options. The DAT line of BTR’s have 7 functions - Play, Pause, Volume up/down,
Track up/down, Pairing and Power on/off of Bluetooth audio through this one solution. Once paired, the BTR will auto
pair the last person paired to the controller when it was powered down. The unit will remember up to 9 users and have
memory without battery for up to 30 days.






All Diamond Audio amplifiers work with these Bluetooth receivers:


ICRCABLE
RED)
NUT


AUX IN

BTR 

“FOR MARINE”
DABTR10
“FOR RECREATION”
AUX
DABTR12
“ FOR POWERSPORTS”
DABTR9
10

TURN-ON OPTIONS - configure the “Turn-On Mode” switch for desired turn-on trigger. There are 3 modes available
on the MICRO series amplifier, REM, DC and VOX. (REM) is the standard 12V trigger wire (DC) or DC offset (when
connected high level in, this will sense differences in ground in your wiring through the speaker leads and turn on amplifier),
VOX (signal sensing) will sense any kind of signal input into the amplifier RCA turning on the amplifier. The most preferred
and reliable method is using the REM setting with a 12V trigger wire connected to the vehicles headunit switch ouput and
will provide instant on and off for the amplifier. VOX and DC will provide turn on capabilities for the amplifier when a 12V
trigger wire is not available. These methods will have some delay in turning the amplifier on and off.
OPTIONAL SOURCE - BLUETOOTH RECEIVER (BTR9/10/12) SETUP
The BTR will pair to your phone (or any selected Bluetooth device) and will allow playback through the amplifier to
speakers giving you unlimited install options. The DAT line of BTR’s have 7 functions - Play, Pause, Volume up/down,
Track up/down, Pairing and Power on/off of Bluetooth audio through this one solution. Once paired, the BTR will auto
pair the last person paired to the controller when it was powered down. The unit will remember up to 9 users and have
memory without battery for up to 30 days.
11
SYSTEM CONFIGURATIONS
BRIDGING STEREO/4 CHANNEL AMPS
MICRO81U SIGNAL ENDPLATE
MICRO81U POWER/SPEAKER ENDPLATE
SPEAKER
OUTPUT
INPUT SIGNAL
HARNESS
MICRO82U SIGNAL ENDPLATE
MICRO82U POWER/SPEAKER ENDPLATE
INPUT SIGNAL
HARNESS
SPEAKER OUTPUT
HARNESS
Since the MICRO8 series amplifiers can take speaker
level in the easiest and cleanest way to connect to your
radios speaker outputs is to buy some stereo RCA
cable and just strip the wires to connect to
the OEM amplifier/Headunits speaker outputs
then plug directly into the amplifiers RCA input
harness. Just switch how Turn-On works
(REM/DC/VOX)
SPEAKER LEVEL INPUT (OPTIONAL):
USE THE LEFT + AND THE RIGHT -
MICRO81U - MONOBLOCK
SUBWOOFER(s)
STEREO FULL-RANGE
SPEAKERS - 2 PAIR
IN PARALLEL (2 OHMS)
MICRO82U- STEREO 2 OHMS
W/ 4 SPEAKERS
HEAD UNIT
(PERFERREDLY 5V OUTPUT)
HEAD UNIT
(PERFERREDLY 5V OUTPUT)
BATTERY
BATTERY
SUB PRE OUTPUT
FROM HEAD UNIT
SUBWOOFER
Want a REALLY BIG 2 channel amplifer? Then BRIDGE
a 4 channel amp! Easiest way is to use “Y-Adaptors”
These are readily available pretty much anywhere and
makes “bridging“ easy. Use a Y-Adaptor on the FRONT
input (L/R) - this will now be LEFT. Do the same on the
rear (L/R) - this is now RIGHT. Connect the speakers
to the BRIDGED connection on the amplifier (FRONT is
now LEFT/RIGHT is now REAR) and your DONE!
NOTE: you MUST connect ONLY a 4 ohm load!!!

12
SYSTEM CONFIGURATIONS
MICRO84U- FULL MARINE/HOT ROD
SYSTEM WITH BTR
MICRO84U SIGNAL ENDPLATE
MICRO84U POWER/SPEAKER ENDPLATE
FRONT OUTPUT
SPEAKER HARNESS
REAR OUTPUT
SPEAKER HARNESS
SMARTPHONE
(BLUETOOTH)
DABTR12
(OR ANY DAT
BLUETOOTH RECEIVER)
MICRO BTR CABLE
(INCLUDED WITH BTR)
8 - 8 INCH HXM8
EXTREME HIGH OUTPUT
3-WAY SPEAKER
BATTERY
LEFT FRONT
RIGHT FRONT
*WHEN USING BTR - SWITCH INPUT CONFIG TO 2CH
THIS WILL GIVE YOU 4 CH OUT, NO FADE CAPABILITY
LEFT REAR
RIGHT REAR
(4 OHM SPEAKERS IN PARALLEL = 2 OHMS ALL CHANNELS)
AUX
+12V (Battery)
Switched 12V (Remote)
-12V (Ground)
BTR WIRING

SYSTEM CONFIGURATIONS
13
FRONT INPUT
SIGNAL HARNESS
MICRO84U SIGNAL ENDPLATE
FRONT OUTPUT
SPEAKER HARNESS
REAR INPUT
SIGNAL HARNESS
REAR OUTPUT
SPEAKER HARNESS
MICRO84U CHANNEL CONFIGURATION
STEREO FRONT/REAR SETUP
STEREO FULL-RANGE
SPEAKERS
FRONT & REAR
HEAD UNIT
(PERFERREDLY 5V OUTPUT)
BATTERY
MICRO84U POWER/SPEAKER ENDPLATE

SYSTEM CONFIGURATIONS
14
MICRO85U 5-CHANNEL SYSTEM
MICRO85U SIGNAL ENDPLATE
FRONT INPUT
SIGNAL HARNESS REAR INPUT
SIGNAL HARNESS
MICRO85U POWER/SPEAKER ENDPLATE
FRONT AND REAR
CO-AXIALS/COMPONENTS
(4 OR 2 OHM SPEAKERS)
PREAMP OUT
FRONT
PREAMP OUT
REAR
HEAD UNIT
(PERFERREDLY 5V OUTPUT)
BATTERY
DUAL 2 OHM SUBWOOFER
(EQUAL 2 OHMS WHEN COMBINED)
SINGLE 2 OHM OR
DUAL 4 OHM VOICE
COIL SUBWOOFER
(EQUAL 2 OHMS WHEN COMBINED)
SUB INPUT
SIGNAL
HARNESS
SPECIAL NOTE:
This amplifer is perfect for a
“space consious” 5 channel
system WITH DSP!!
ADD the NEW BTDSP-46
Digital Sound Processor
and the sound will take
you to a whole nother place!!!

15
SYSTEM CONFIGURATIONS
BATTERY
MICRO88U 8-CHANNEL SYSTEM
HEAD UNIT
(PERFERREDLY 5V OUTPUT)
INPUT SIGNAL
HARNESS CH1/2
INPUT SIGNAL
HARNESS CH5/6
INPUT SIGNAL
HARNESS CH3/4
INPUT SIGNAL
HARNESS CH5/6
8 CHANNELS OF
CO-AXIALS or COMPONENTS
(4 OR 2 OHM SPEAKERS)
NOTE: CHANNELS
ARE BRIGEABLE!
(4 OHM!}

16
RMS Power Rating
Max Power
Power Supply
Power Supply Threshold
Distortion

S/N Ratio (A weighted @1W)
S/N Ratio (A weighted @ FP)
Input Sensitivity
Low Input Level
High Input Level
Input Impedance
Low Input Level
AUX Input Level
Crossover (-12dB/Oct)
Variable High-Pass
PRODUCT SPECIFICATIONS
Variable Low-Pass
Variable Sub-Sonic
Fuse Ratings
Power Supply
Output Stage
Output Impedance

Idle Current
ATC
Dimensions
Lenght x Width x Height (inches)
Lenght x Width x Height (mm)
Bandwidth (-3dB)
Topology
Type





MICRO81U
500 W RMS
Full PWM
10.0VDC -
17.0VDC
0.5%
-85dBA
-101.1dBA
200mV - 10V
N/A


40Hz - 400Hz
40Hz - 400Hz
10Hz - 55Hz

>250
(0.7A)
25A
9.0” x 4.06” x 1.52”
228.6 x 103.124 x 38.608
10Hz-350Hz
Full Range Class D
300 W X 1
175 W X 1
N/A
300 W X 1
175W X 1
MICRO82U
500 W RMS
Full PWM
10.0VDC -
17.0VDC
0.5%
--85dBA
-101.1dBA
200mV - 10V
N/A


40Hz - 400Hz
40Hz - 400Hz
N/A

>250
(0.7A)
25A
9.0” x 4.06” x 1.52”
228.6 x 103.124 x 38.608
10Hz-30KHz
Full Range Class D
250 W X 4
150 W X 2
N/A
N/A
500 W X 1
MICRO84U
0.5%
--85dBA
-101.1dBA
200mV - 10V
N/A


40Hz - 400Hz
40Hz - 400Hz

>70
Full PWM
10.0VDC -
17.0VDC
(0.7A)
40A
9.0” x 4.06” x 1.52”
228.6 x 103.124 x 38.608
10Hz-30Hz
N/A
Full Range Class D
600 W RMS
150 W X 4
80 W X 4
N/A
N/A
300 W X 2
SPECIFICATIONS

RMS Power Rating
Max Power
Power Supply
Power Supply Threshold
Distortion

S/N Ratio (A weighted @1W)
S/N Ratio (A weighted @ FP)
Input Sensitivity
Low Input Level
High Input Level
Input Impedance
Low Input Level
AUX Input Level
Crossover (-12dB/Oct)
Variable High-Pass
PRODUCT SPECIFICATIONS
Variable Low-Pass
Variable Sub-Sonic
Fuse Ratings
Power Supply
Output Stage
Output Impedance

Idle Current
ATC
Dimensions
Lenght x Width x Height (inches)
Lenght x Width x Height (mm)
Bandwidth (-3dB)
Topology
Type





SPECIFICATIONS
MICRO85U
0.5%
--85dBA
-101.1dBA
200mV - 10V
N/A


40Hz - 400Hz
40Hz - 400Hz

>70
Full PWM
10.0VDC -
17.0VDC
(0.7A)
60A
10.45” x 4.02” x 1.4”
265.6 x 102.11 x 35.56
10Hz-30Hz
N/A
Full Range Class D
950 W RMS
150 W X 4 + 350 W X 1
80 W X 4 + 200 W X 1
N/A
N/A
300 W X 2
MICRO88U
0.5%
--85dBA
-101.1dBA
200mV - 10V
N/A


40Hz - 400Hz
40Hz - 400Hz

>70
Full PWM
10.0VDC -
17.0VDC
(0.7A)
40A
11.44” x 4” x 1.6”
290.5 x 103 x 40.6
10Hz-35Hz
N/A
Full Range Class D
1000 W RMS
100 W X 8
75 W X 8
N/A
N/A
200 W X 2
17

Notes

Warranty
19
Thank you for purchasing a Diamond Audio product and we hope to provide you with countless
hours of listening enjoyment.
Diamond Audio warrants all of our amplifiers and speakers to be free to defects in materials and
workmanship for a period of one (1) year.
This warranty is non-transferable and applied only to the original purchaser from an authorized
Diamond Audio dealer. If service is required and necessary under this warranty due to manufac-
turing defect or malfunction, then Diamond Audio will repair and/or replace defective product
with either new or remanufactured like product at no charge at our discretion.
Damage to product cause by the following will not be covered under this warranty: abuse,
accident, misuse, neglect, modifications, repairing attempts, seller/installer misrepresentation.
This warranty does not cover any incidental, consequential, or cosmetic damage due to
accidents or normal wear and tear, nor does it cover the cost of removing or reinstallation of the
product. Warranty is void if the products serial number has been removed, defaced, and/or
tampered with.
Warranty Procedure:
We recomment that you contact your Diamond Audio authorized dealer where your original
purchase was made to initiate all warranty claims. Our authorized dealers can guide you
through the warranty procedure to ensure that your claim will be processed in a timely manner.
All warranty returns must be accompanied with a proof of purchase (a copy of the original sales
recipt) and be shipped freight prepaid to our facility with an RA (Return Authorization) number
clearly marked on the outside of the package. Direct returns from consumers or non-authorized
dealers will be refused if shipped without a valid RA number authorized by Diamond Audio
beforehand.
INTERNATIONAL
Products purchased outside of the U.S.A. are covered only by that country’s distributor and not
by Diamond Audio U.S.A. Please Ship All Warranty ClaimsWith Pre-Authorized RA Number
To:
CV&DA Holdings, Inc.
ATTN: Customer Service Department
3761 S. Hill St.
Los Angeles, CA 90007 USA
Please Contact Customer Service for Further Warranty Information: U.S.A.
Tel: [phone] / Tech Support 213-212-3187 / Fax: [phone]
We reserve the right to change the products and specifications at any time without notice.
Images may or may not include optional equipment.

www.DiamondAudio.com
®
3761 S. Hill Street
Los Angeles, CA. 90007
Tech Support Direct: 213-212-3187
©2019 Diamond Audio. All rights reserved.
(a division of CV & DA Holdings, Inc.)