CDT Audio SQA-4075 Owner's Manual

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CDT Audio SQA-4075 Owner's Manual | Manualzz

Design & Engineering

By

CDT Audiophile Fanatics In California USA

CDT Audio,Inc.

92 Second Street

Buellton, California

USA

Ph:1-877-568-3238

Fx:1-805-693-1898

Email:[email protected]

WWW.cdtaudio.com

WWW.cdtgold.com

V1 1004

Owner’s Manual

INTRODUCTION

Amplifiers provide high-performance sound reinforcement for your mobile audio equipment. Its 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, We suggest that your stereo components are installed by an authorized dealer. It is highly recommended that you read this Owners

Manual before beginning installation.

FEATURES - CLASS AB AMPLIFIER

MOSFET POWER SUPPLY AMPLIFIER

GOLD PLATED BRASS SET SCREW TERMINALS

12dB/Oct. CROSSOVER

- VARIABLE HIGH PASS CROSSOVER 50Hz-500Hz or 30Hz-500Hz

- VARIABLE LOW PASS CROSSOVER 50Hz-500Hz or 30Hz-500Hz

VARIABLE 24dB/Oct. SUBSONIC FILTER 50Hz ~ 100Hz or 15Hz-45Hz

5 WAY PROTECTIONS

DAISY CHAIN THROUGH OUTPUT RCA

POWER AND PROTECTION LED

2 OHM STABLE CIRCUITS

SOFT START / MUTE CIRCUIT

TRIMODE OUTPUT CONFIGURATIONS

FEATURES - CLASS AB MONO AMPLIFIER

MOSFET POWER SUPPLY AMPLIFIER

DOUBLE SIDED THROUGH HOLE EPOXY PCB

GOLD PLATED BRASS SET SCREW TERMINALS

24dB/Oct. CROSSOVER

- VARIABLE LOW PASS CROSSOVER (50Hz-250Hz)

VARIABLE 24dB/Oct. SUBSONIC FILTER 15Hz ~ 45Hz

VARIABLE PHASE SHIFT 0 ~ 180

VARIABLE 0dB TO 12dB BASS BOOST AT 45Hz

5 WAY PROTECTIONS

DAISY CHAIN THROUGH OUTPUT RCA

BASS REMOTE CONTROL

POWER AND PROTECTION LED

1 OHM STABLE CIRCUIT

SOFT START / MUTE CIRCUIT

WARNNING

High powered audio systems in a vehicle are capable of generating “Live Concert” high levels of sound pressure. Continued exposure to excessively high volume sound levels may cause hearing loss or damage. Also, operation of a motor vehicle while listening to audio equipment 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.

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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. Your Amplifier has been designed to accept Low-Level (Pre-Amp outputs from your radio) signal source.

If your radio/source is equipped with Pre-Amp outputs. it is possible to utilize them to drive the Amplifier and connecting (Amplifier) to the 2 rear speakers.

Then, use the built-in power of your radio to drive the 2 front speakers.

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 (depending on location) 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 also designed with a thermal shut-down protection circuit, making it reasonably tolerant of mounting variations. Any configuration which allows moving 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 is 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 vertical surface.

MOUNTING 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 ample room for air circulation and cooling.

b. Use the amplifier as a template to mark the mounting holes. Remove the Amplifier

and drill 6 holes. USE EXTREME CAUTION, INSPECT UNDERNEATH SURFACE

BEFORE DRILLING.

c. Secure the Amplifier using the screws provided.

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CONNECTING THE POWER

CAUTION

AS A PRECAUTION, IT IS ADVISABLE TO DISCONNECT THE VEHICLE’S BATTERY BEFORE MAKING CONNECTION TO

THE + 12 VOLT SUPPLY WIRING.

4 GAUGE(Thicker if planning for additional Amplifiers)wire is recommended for both the power and ground wires. 18 Gauge, for the remote turn-on wire. Both types available at most Mobile Audio Dealers or Installation Shops.

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 vehicle’s chassis.

NOTE

GROUND WIRE SHOULD NOT BE EXTENDED MORE THAN 3 FT. (1 METER).

USING THIS METFOD CAN CAUSE TURN ON AND TURN OFF TRANSIENTS (NOISE)

+12 Volt(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 measures, install an in-line

50 Amp 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.

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 RADIO DOES NOT HAVE A +12 VOLT OUTPUT LEAD WHEN THE RADIO IS TURNED ON, “RMT” TERMINAL ON

THE AMPLIFIER CAN BE CONNECTED TO VEHICLE’S ACCESSORY CIRCUIT THAT IS LIVE WHEN THE KEY IS “ON”.

Battery

FUSE Holder

Near

Battery

Remote Turn ON

To Power Antenna

Chassis

Ground

(-)

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OPERATION

Hi-Input - It allows Hi-Input to be connected to the amplifier

RCA Low Level Input Jacks lt allows left and right inputs to be connected to the amplifier using RCA plugs.

RCA Line Output Jacks

Full range output from channel L&R inputs is provided at Line Out Jacks.

Input Level Control

It allows for the adjustment of the gain of both channels to match the output level of the source. In addition, it allows for detailed adjustment with L&R level control to be separated.

X-over switch a) LPF : Allows for the control of the low pass frequency range

(30Hz-500Hz) by using the Low Variable Control.

b) FULL : Allows for full range pass through.

c) HPF : Allows for the control of the high pass frequency range

(30Hz-500Hz) by using the High Variable Control.

Multi times x-over switch - It can make the x-over freguency range to x 1 or x 10 times

Subsonic Filter

It admits of removing the frequency below 10Hz to 100Hz using the Subsonic

Variable Control in order to protect subwoofer speaker or to produce powerful subwoofer sound.

Phase Shift - It can adjust the phase shift 0˚ ~180˚.

Bass Boost

Adjust the sub boost level of the selected frequency output from 0dB to 18dB.

Input Mode Selector a) F&R : Allows for the Front & rear input.

b) F : Allows for the Front input only in case of using 2 channel input only.

Power LED - lt indicates when amplifier is on and no fault existence.

Protection LED

lt illuminates when fault condition exists, and amplifier immediately shuts down.

lf illuminated, turn amplifier off, check for shorted speaker leads and DC noise

from RCA input and attempt to re-power amplifier.

Speaker Terminal - It allows the connection of speakers to the amplifier.

Fuse

It protects both the amplifier and automobile electrical system from fault conditions.

Power connection - Connects +12VDC power wire from the battery.

Remote connecton

- 4 -

OPERATION

RCA Line Output Jacks

Full range output from channel L&R CH inputs is provided at Line Out Jacks.

RCA Low Level Input Jacks lt allows left and right inputs to be connected to the amplifier using RCA plugs.

Input Level Control

It allows for the adjustment of the gain of both channels to match the output level of the source. In addition, it allows for detailed adjustment with1&2CH level control to be separated.

Subsonic Filter

It admits of removing the frequency below 15Hz to 45Hz using the Subsonic

Variable Control in order to protect subwoofer speaker or to produce powerful subwoofer sound.

Remote Gain Control you can control Remote Gain, conneeting the Remote control to Amplifier.

Variable Low Pass cross over control with ON/OFF S/W.

Adjust the crossover frequency of the low pass from 30Hz to 250Hz

Bass Boost

Adjust the sub boost level of the selected frequency output from 0dB to 18dB.

It indicates when amplifier is on and no fault existence.

Variable Phase shift

Variable Phase shift 0 to 180

Power LED

It indicates when amplifier is on and no fault existence.

Protection LED

It illuminates when fault condition exists and amplifier immediately shuts down.

If illuminated, turn amplifier off, check for shorted speaker leads and CD noise from

RCA input and attempt to re-power amplifier.

Speaker Terminal

It allows the connection of speakers to the amplifier.

Fuse

It protects both the amplifier and automobile electrical system from fault conditions.

Power connection

Remote connection

Connects the control wire which allows the amplifier to be turned on and off by the radio cassette player.

Connects ground wire from a suitable ground point on the chassis.

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SPECIFICATIONS

SPEC.

MODEL

POWER OUTPUT DC(14.4V)

RMS AT 4 Ohm

RMS AT 2 Ohm

RMS AT 4 Ohm , MONO

RMS AT 1 Ohm(MONO)

S/N RATIO

THD (IHF-A)

CHANNEL SEPARATIONS

INPUT SENSITIVITY

INPUT IMPEDENCE

SLEW RATE

DAMPING FACTOR

FUSE RATING

DIMENSION

* WIDTH

* HEIGHT

* LENGTH

SQA-2130

130W X 2Ch

175W X 2Ch

75W X 4Ch

120W X 4Ch

350W X 1Ch 200W X 2Ch

500W X 1Ch

800W X 1Ch

>100dB

0.03%

>55dB

0.1V - 8V

47 KOhm

µ

200 AT 4 Ohm

25A X 2EA

>100dB

0.03%

>55dB

0.1V - 8V

47 KOhm

µ

200 AT 4 Ohm

30A X 2EA

1100W X 2Ch

>100dB

0.03%

>55dB

0.2V - 6V

47 KOhm

µ

200 AT 4 Ohm

20A X 4EA

230.3 mm

55.0 mm

350.0 mm

SQA-4075

230.3 mm

55.0 mm

350.0 mm

SQA-1000

230.3 mm

55.0 mm

450.0 mm

SQA-4100

110W X 4Ch

150W X 4Ch

300W X 2Ch

>100dB

0.03%

>55dB

0.1V - 8V

47 KOhm

10V / sec

200 AT 4 Ohm

40A X 2EA

230.3 mm

55.0 mm

450.0 mm

Tech Support Call

CDT Audio,Inc.

92 Second Street

Buellton, California 93427

Toll Free:1877-568-3238

Email:[email protected]

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