PowerAcoustik OV2-1250 User manual

OV2-420/OV2-600/OV2-800/OV2-1250/OV2-1800
OV2-2200/OV2-2600/OV4-840/OV4-1200/OV4-1600
Owner s Manual
,
INTRODUCTION
Amplifiers provide high-performance sound reinforcement for your mobile audio equipment.
It s versatility enables compatibility with optional Equalizers,Frequency Dividing Network
Crossovers,and other audio processors in a customized system.The Multi-Mode bridging
Capabilities allow flexibility in hosting several different speaker configurations.
To achieve optimum performance,it is highly recommended that you read this Owner s
Manual before beginning installation.
FEATURES
WARNING
High powered audio systems in a vehicle are capable of generating Live Concert high
levels of sound pressure,Continual exposure to excessively high volume sound levels may
cause hearing loss or damage.Also,operation of a motor vehicle while listening to audio
equipments at high volume levels may impair your ability to hear external sounds such as;
horns,warning signals,or emergency vehicles,thus constituting to a potential traffic hazard.
In the interest of safety,Consumer Electronics recommends listening at lower volume levels
While driving.
2
Full Mosfet Power Supply
PWM Circuitry
Full Selectable Crossover Hi/Full/Low
Three Way Protection Circuit
2 Ohm Stable Stereo
Tri-Mode Capable
Super Cool Blue Led
Chrome Top Plate Panel
Variable Low Pass 40Hz-250Hz/30Hz-500Hz
Variable Hi Pass 40Hz-250Hz/50-500Hz
Variable 24 dB Bass Boost @ 40Hz
Frequency Response: 10Hz to 30 KHz
S/N Ratio: 98dB
THD: 0.02%
System Distress Indicator
4 Gauge Power/Ground Connection
Platinum Plated RCAConnectors
Line Output
High/Low Level Inputs With Floating Ground
65-C0486-MA Model No.:OV2-420/OV2-600/OV2-800/OV2-1250/OV2-1800
OV2-2200/OV2-2600/OV4-840/OV4-1200/OV4-1600 ：A2

TABLE OF CONTENTS
PLANNING YOUR SYSTEM................................................ 4
MOUNTING YOUR AMPLIFIER........................................... 4
WIRING CONNECTION.................................................... 5-7
POWER INDICATOR LED................................................... 7
INPUT SENSITIVITY CONTROL............................................. 8
CONNECTING THE SPEAKER............................................ 9-12
TROUBLE SHOOTING GUIDE............................................. 13
WARNING....................................................................... 14
SPECIFICATION............................................................... 15-16
PLANNING YOUR SYSTEM
Before beginning the installation,consider the following:
a.If you plan to expand your system by adding other components sometime in the future,
ensure adequate space is left,and cooling requirements are met.
b.Speaker level or RCA,which to use and why?
If your source unit is equipped with both types of outputs,Use the RCA s for the amplifier
inputs,as this provides for increased bandwidth and you can still utilize the speaker
Outputs,for driving the (smaller) front speakers directly.
NOTE:
DISTORTION LEVEL IS CONSIDERABLY LOWER FROM PRE-AMP(LOW LEVEL) OUTPUTS,THAN SPEAKER
(HIGH LEVEL)OUTPUTS.
c.Are your components matched? The peak power rating of your speakers must be equal
or greater than the Amplifier s.They also must be 2-8 Ohms impedance(This information
is normally printed on the speaker magnet).
d.Consider both the length of your leads,and routing when determining the mounting
location.Pre-Amp input Jacks require a length of high quality shielded male to male RCA
patch cord.
MOUNTING YOUR AMPLIFIER
The mounting position of your Amplifier will have a great effect on its ability to dissipate the
heat generated during normal operation.It has an ample heat sink for heat dissipation,and it is
also designed with a thermal shut-down(for heat protection)circuit,making air to be
directed over the cooling fins will improve heat dissipation dramatically.DO NOT enclose
the amplifier in a small box or cover it so that air cannot flow around fins.
Temperatures in car trunks have been measured as high as 175 F(80 c)in the summer time.
Since the thermal shut-down point for the Amplifier in 185 F(85 c)it is easy to see that it must
be mounted for maximum cooling capability.To achieve maximum advantage of
convection air flow in an enclosed trunk,mount the amplifier in a vertical position,on a
vertical surface.
Cooling requirements are considerably relaxed when mounting inside the passenger
compartment since the driver will not often allow temperatures to reach a critical point.
Floor mounting under the seat is usually satisfactory as long as there is at least 1 inch(2cm)
above the Amplifier s fins for ventilation.
a.Select a suitable location that is convenient for mounting,is accessible for wiring,and
has an ample room for air circulation and cooling.
b.Use the amplifier as a template to mark the mounting holes.Remove the Amplifier and
drill 4 holes.With extreme caution,inspect underneath surface before drilling.
c.Secure the Amplifier using the screws provided.
4
3

B.VARIABLE LOW-PASS FILTER(40Hz-250Hz)
For use as a dedicated subwoofer channel,set filter switch to LPF .Adjust variable
crossover frequency with control as desired.The amplifier input circuit filters out
everything above 40....250Hz(depends on the adjustment of the frequency control),
so only the deepest bass notes are amplified.
C.VARIABLE HIGH-PASS FILTER(40Hz-250Hz)
For use as a dedicated high ranged channel,set filter switch to HPF The input.
circuit filters out all frequencies below 40Hz....250Hz.
D.BASS BOOST
By using the bass boost function the deepest bass notes at 50Hz are emphasized.
E.CONNECTING HIGH LEVEL INPUTS
NOTE:
DO NOT CONNECT THESE HIGH LEVEL INPUT WIRES IF YOU ARE USING THE LOW LEVEL INPUT RCA JACKS.
CAUTION
NOTE THAT ONLY POSITIVE(+)WIRES ARE USED.DO NOT CONNECT SPEAKER NEGATIVES.
6
OV2-420/OV2-600
A.CONNECTING THE POWER
CAUTION:
AS APRECAUTION,IT ISADVISABLE TO DISCONNECT THE VEHICLE S BATTERY BEFORE MAKING CONNECTION
TO THE +12 VOLTS SUPPLY WIRING.
4/8 GAUGE(Or thicker if planning for additional Amplifiers)wire is recommended for both the
power and ground wires.12 Gauge,for the remote turn wire.Both types are
available at most Mobile Audio Dealers or Installation Shops.
(1)GROUND:To Vehicle Chassis
To avoid unwanted ignition noise caused by ground loops,it is essential that the
Amplifier be grounded to a clean,bare,metal surface of the vehicles chassis.
NOTE:
GROUND WIRE SHOULD NOT BE EXTENDED MORE THAN 3 FT.(1 METER).
(2)+12Volt(Fused) Constant Power:To Battery(+)
Due to the power requirements of the Amplifier,this connection should be made
directly to the positive (+) terminal of battery.For safety measure,install an in-line Fuse
Holder (not included) as close to the battery positive (+) terminal as possible with an
ampere rating:not to exceed total value of fuses in Amp.
OV2-420:20A/OV2-600:30A/OV2-800:20AX2/OV2-1250:25AX2/OV2-1800:30AX2
OV2-2200:25AX3/OV2-2600:30AX3/OV4-840:20AX2/OV4-1200:25AX2/OV4-1600:40AX2
(3)Remote Turn-On Input:To Power Antenna output of Car Stereo
This Amplifier is turned ON remotely when the vehicle s stereo is turned ON .
NOTE:
IF YOUR SOURCE UNIT DOES NOT HAVE AN ACTIVE +12 VOLT LEAD WHEN IT IS TURNED-ON,YOU CAN
EITHER INSTALL AN AUXILIARY SWITCH,OR YOU CAN TAP-INTO AN IGNITION LEAD;NOTE HOWEVER,THAT
YOUR AMPLIFIER WOULD TURN-ON,EVERY TIME YOU START YOUR CAR IF YOU CHOSE THE IGNITION OPTION.
5
WIRING CONNECTIONS
12V
REM
GND
POWER INPUT
Vehicle chassis ground
Remote Turn-ON is
connected to Radio s power
antenna lead or a switchable +12V
Fuse
Near Battery
BATTERY
CH2(-)
CHASSIS GROUND-Black
CH1(-)
CH2(+)CH1(+)
BASS BOOST
OV2-1250/OV2-1800/OV2-2200/OV2-2600
OV2-420/OV2-600/OV2-800/OV2-1250/OV2-1800
OV2-2200/OV2-2600/OV4-840/OV4-1200/OV4-1600

F.CONNECTING LOW LEVEL INPUTS (RCA Jacks)
NOTE:
DO NOT USE IN CONJUNCTION WITH HIGH LEVEL INPUT WIRES.
Wire routing is CRITICAL for NOISE FREE PERFORMANCE,Observe the following:
1.Always use high quality RCA type shielded cables.
2.Always use the shortest lenght possible.If the cable is too long,make an S type
loop(not a coiled loop)in the center of the cable to take up any excess.
3.Never cut the shielded cable and re-splice it.
4.Never route any Amplifier input cables near nor parallel to speaker outputs,high
energy ignition wires,nor near computer controlled ignition circuit units (Computer
units may be found behind or under the dash panel in late model cars).
POWER INDICATOR LED
This METER LAMP will illuminate when the amplifier is turned ON .If it fails to illuminate,
check the power connections to the Amplifier and fuses.
PROTECTION CIRCUIT
Should the Amplifier be SHORT CIRCUITED overloaded or overheated,the protection
circuit will SHUT-DOWN the Amplifier.
CAUTION
THIS AMPLIFIER WAS DESIGNED TO BE USED WITH EITHER 2 OHM STEREO/CHANNEL OR 4 OHM EACH
MONO BRIDGED CHANNEL.IN THE CASE OF TRI-MODE OPERATION,USE EITHER 8 OHM STEREO CHANNEL
SPEAKERS AND 4 OHM SUB OR VICE VERSA.SEE THE SECTION TRI-MODE FOR FURTHER INFORMATION
ON PROPER USE.
INPUT SENSITIVITY(LEVEL) CONTROL
In order to achieve maximum signal-to-noise performance,this control adjusts the signal
level from your Car Stereo/Source,to match the Amplifier sensitivity.It is NOT a volume
control.
a.Set INPUT LEVEL Control at mid-point.
b.Listen for audible distortion as you increase the Car Stereo VOLUME control.If none
is heard,turn the adjustment level control toward to MAX in stages,until the onset of
audible distortion is heard,then decrease to MIN level prior to the immediate
point of audible distortion.
C.If distortion is immediately heard,turn control to MIN until the sound is clear.
To adjust,proceed as follows:
NOTE:
NOT PERFORMING ABOVE ADJUSTMENT PROCEDURE AND/OR SIMPLY SETTING THIS CONTROL AT OR NEAR
MAX POSITION,MAY INDUCE ELECTRICAL AUDIO NOISE INTO THE SYSTEM.
8
7
Input Sensitivity Control
Input Sensitivity Control
CHASSIS GROUND-Black
3 CH(+)
3 CH(-) 1 CH(-)
1 CH(+)
4 CH(+)
4 CH(-) 2 CH(-)
2 CH(+)
OV4-840/OV4-1200/OV4-1600
OV2-420/OV2-600
OV4-840/OV4-1200/OV4-1600

(C)TRI MODE
TRI MODE OPEATIONAL OUTPUT allows a Crossover(Subwoofer) to be operated in MONO
mode while the main speaker is playing in stereo.
Leave the Crossover(Subwoofer)Switch on FULL position.
Use a 100Volt,non-polar capacitor for a high pass crossover and a wire coil (inductor)to
block high frequencies from the Crossover (Subwoofer)as shown in the figure below.
Capacitor and inductor values as written in the below determine the crossover
frequencies.
The front and rear channels of this amplifier get this capability.
Only the rear left and right channels are shown below.
""
CONNECTING THE SPEAKERS
(A)STEREO MODE
(B)MONO MODE
COMPONENT VALUES FOR 6dB PASSIVE CROSSOVER
FREQUENCY
80Hz
100Hz
120Hz
150Hz
INDUCTOR CAPACITOR
7.5mH
6.5mH
5.5mH
4mH
470uF
330uF
330uF
220uF
10
LEFTCHANNEL
2-4Ohm
OV2-420/OV2-600/OV2-800/OV2-1250/OV2-1800/OV2-2200/OV2-2600
9
INDUCTOR
LOW PASS FILTER
CAPACITOR
HIGH PASS FILTER
OV2-800/OV2-1250/OV2-1800/OV2-2200/OV2-2600
Input Sensitivity Control

1211
Model:OV4-840/OV4-1200/OV4-1600
(A)4 CHANNEL MODE
(B)3 CHANNEL MODE
(C)2 CHANNEL MODE
COMPONENT VALUES FOR 6dB PASSIVE CROSSOVER
FREQUENCY
80Hz
100Hz
120Hz
150Hz
INDUCTOR CAPACITOR
7.5mH
6.5mH
5.5mH
4mH
470uF
330uF
330uF
220uF
(D)6 CHANNEL MODE
1CH
2-4Ohm 2CH
2-4Ohm
3CH
2-4Ohm 4CH
2-4Ohm
1CH/2CH BRIDGE
4Ohm
3CH
2-4Ohm 4CH
2-4Ohm
4Om
1CH/2CH BRIDGE
4Ohm
3CH/4CH BRIDGE
1CH
4-8Ohm
2CH
4-8Ohm
LEFT
WOOFER
8Ohm
INDUCTOR
LOW PASS FILTER
CAPACITOR
HIGH PASS FILTER
4CH
4-8Ohm
3CH
4-8Ohm
RIGHT
WOOFER
8Ohm
INDUCTOR
LOW PASS FILTER
CAPACITOR
HIGH PASS FILTER

13 14
TROUBLE SHOOTING GUIDE
SYMPTOMS CHECK POINTS CURE
NO SOUND
In the power
LED illuminated?
Check fuses in amplifier.
Be sure Turn-on lead is connected
Check signal leads.Check gain
control.
Check Tuner/Deck volume level.
Clean contacts on fuse holders.
Is the Diagnosis
LED illuminated? Check for speaker short or
amplifier overheating.
AMP NOT
SWITCHING
ON
No power to power wire
No power to remote
wire with receiver on
Fuse broken
Repair power wire or connections.
Check connections to radio.
Check fuse
NO SOUND
IN ONE
CHANNEL
Check Speaker Leads
Check Audio Leads
Inspect for short circuit or an
open connection.
Reverse Left and Right RCA inputs
to determine if it is occurring
before the amp.
AMP
TURNING OFF
MEDIUM/HIGH
VOLUME
Check Speaker load
impedance
Be sure proper speaker load
impedance recommendations
are observed.
(If you use an ohmmeter to check
speaker resistance,please
remember that DC resistance and
AC impedance may not be the
same.)
PROTECTION
LED ON (RED) Temperature shutdown
Speaker wires short circuit
Turn radio down
Separate speaker wires and insulate
WARNING
system

THD <0.02% <0.02% <0.02% <0.02% <0.02%
SPECIFICATIONS
16
MODEL NO
MAX Power@2 Ohm
RMS @4 Ohm
Bridged Power
Signal/Nosie Ratio
Frequency Response 1.0dB
HPF
LPF
Input Low Level
Impedance High Level
Fuse
Dimension(WxHxL):inch
OV2-2200 OV2-2600 OV4-840
2200W 2600W 840W
370WX2CH 450WX2CH 80WX4CH
900W 1080W 190WX2
>98dB >98dB >98dB
10Hz-30KHz 10Hz-30KHz 10Hz-30KHz
30Hz-500Hz 30Hz-500Hz 40Hz-250Hz
50Hz-500Hz 50Hz-500Hz 40Hz-250Hz
10K Ohms 10K Ohms 10K Ohms
100 Ohms 100 Ohms 100 Ohms
25AX3 30AX3 20AX2
11.1X2.3X20.5 11.1X2.3X10.6 11.1X2.3X12.8
FEATURES AND SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
OV4-1200 OV4-1600
1200W 1600W
100WX4CH 150WX4CH
THD <0.02% <0.02% <0.02% <0.02% <0.02%
250WX2 360WX2
10Hz-30KHz 10Hz-30KHz
40Hz-250Hz 40Hz-250Hz
40Hz-250Hz 40Hz-250Hz
10K Ohms 10K Ohms
100 Ohms 100 Ohms
25AX2 40AX2
11.1X2.3X12.8 11.1X2.3X18.5
>98dB >98dB
RMS @2 Ohm 450WX2CH 540X2CH 95WX4CH 125WX4CH 180WX4CH
BASS KNOB
SPECIFICATIONS
15
MODEL NO
MAX Power@2 Ohm
RMS @4 Ohm
Bridged Power
Signal/Nosie Ratio
Frequency Response 1.0dB
HPF
LPF
Input Low Level
Impedance High Level
Fuse
Dimension(WxHxL):inch
OV2-420 OV2-600 OV2-800
420W 600W 800W
190W 240W 360W
>98dB >98dB
10Hz-30KHz 10Hz-30KHz 10Hz-30KHz
40Hz-250Hz 40Hz-250Hz 30Hz-500Hz
40Hz-250Hz 40Hz-250Hz 50Hz-500Hz
10K Ohms 10K Ohms 10K Ohms
100 Ohms 100 Ohms 100 Ohms
20A 30A 20AX2
11.1X2.3X7.2 11.1X2.3X9 11.1X2.3X10.6
FEATURES AND SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
>98dB
OV2-1250 OV2-1800
1250W 1800W
95WX2CH
95WX2CH 150WX2CH 220WX2CH 300WX2CH
RMS @2 Ohm
80WX2CH
120WX2CH 180WX2CH 280WX2CH 380WX2CH
560W 760W
10Hz-30KHz 10Hz-30KHz
30Hz-500Hz 30Hz-500Hz
50Hz-500Hz 50Hz-500Hz
10K Ohms 10K Ohms
100 Ohms 100 Ohms
25AX2 30AX2
11.1X2.3X12.8 11.1X2.3X18.5
>98dB >98dB
BASS KNOB NO YES NO NO YES
YESYES NO NO NO