Power bass ASA SERIES Manual de usuario

ASA SERIES CLASS AB MONO BLOCK AMPLIFIER

Owners Manual

Please read through this manual to familiarize yourself with your new ampliﬁer. Should your PowerBass AutoSound mobile ampliﬁer

ever require service, you will need to have the original dated receipt.

ASA3-400.1

ASA3-600.1

2-OHM STABLE DESIGN

Minimum Impedance Load is 2-Ohms

Thank you and Congratulations

Thank you for your decision to purchase a PowerBass USA Autosound mobile ampliﬁer! Our Autosound

ampliﬁers are the result of extensive engineering, testing, and bullet proof construction. Their versatility

enables compatibility with optional signal and audio processors. These high quality MOSFET ampliﬁers

may be conﬁgured to allow maximum ﬂexibility in designing different subwoofer options.

CLASS AB Mono Block AMPLIFIERS

Unlike most Full Range ampliﬁers these models are equipped with a Low Pass Filter control (LPF) that

when engaged is intended only to power subwoofer(s). It is important that you closely follow the wiring

instructions contained in this Owners Manual so that you get the most from your PowerBass AutoSound

A/B Class Mono Block mobile ampliﬁer.

∆Caution ∆

High powered audio systems in a vehicle are capable of generating higher then “Live Concert” levels of sound pressure. Continued

exposure to excessively high volume sound levels will 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 creating a potential trafﬁc hazard. In the interest of safety, PowerBass USA highly recommends listening at lower volume

levels when driving.

TECHNICAL FEATURES

• Mono Block Ampliﬁer for Full Range or Subwoofer Only Applications

• MOSFET Power Supplies for High Power Output and Unprecedented Stability into Low Impedance

Loads

• Soft Delay Remote Turn On/Off Circuit to Eliminating Pops and Clicks

• Built-in Fully Adjustable Electronic Low Pass (LPF) Crossover Network

• Built-in Fully Adjustable Bass Equalization

• Self Diagnostic Protection Circuit with LED Status Indicator for Impedance Over-load, Speaker Short

Circuit, Thermal Overheating, and DC Output.

• 2-ohm Stable Operation (Minimum)

• Variable Gain Control

• Pass Thru Line Output Jacks

• Remote Level Control (Included)

INSTALLATION EXPERIENCE

Installation of PowerBass mobile ampliﬁers requires detailed knowledge of electronics wiring and proper

speaker impedance. We strongly recommend installation by an authorized PowerBass dealer. This Own-

ers Manual only provides general installation and operation instructions. If you have any reservations

about your installation skills, please contact your local PowerBass dealer for assistance.

IMPORTANT : This ampliﬁer is designed for operation in vehicles with 12-volt Negative ground

electrical systems only.

PREPARING FOR INSTALLATION

NOTE: The tools listed below may be required for basic installation

• An electric drill with bits

• Philips head and standard screwdrivers

• Wire strippers

• Crimping tool

• VOM (electronic volt ohm meter)

• Heat shrink tubing and heat gun

• Soldering iron

• Electronic (Rosen Core not Acid Core) Solder

INSTALLATION PRECAUTIONS

NOTE: Proceed only if you are a qualiﬁed installer, otherwise; see your Authorized PowerBass Dealer to

professionally install this ampliﬁer. Always wear protective eyewear when using tools.

• Turn off all electrical devices before you begin.

• Disconnect the negative (-) lead from your vehicles battery.

• Locate all fuel lines, brake lines, oil lines, and electrical cables when planning the install.

• Make sure there is at least 2-inches (5 cm) around the air vents on the ampliﬁer.

• When connecting ground points, make sure all paint is carefully scrapped away from the auto body

and contact is make with bare metal.

• Use a utility knife to trim away fabric from hole locations before drilling or cutting.

• When running power cables through sheet metal, be sure to use grommets to properly insulate the

metal edges from the wire insulation.

• If possible, use tubing through grommets.

Due to the high power output of our PowerBass Autosound ampliﬁers, considerable heat may be

produced when the unit is in operation. For this reason the ampliﬁer should be mounted in a location

which will allow air to circulate freely. A clearance of at least 2-inches (5 cm) to all sides of the ampliﬁer

is necessary not only for proper cooling, but also for gaining access to the inputs and other variable

controls. Be sure that the power and signal cable connections can enter and leave the ampliﬁer in a

straight line to avoid the risk of kinked wires causing malfunction.

Fig.1 Mounting Ampliﬁer

MOUNTING THE AMPLIFIER

MOUNTING LOCATION

Find a clear and well ventilated area to mount your ampliﬁer that is unobstructed by any objects that will cause

harm or block ventilation. Do not mount under a carpet or in an area with no air circulation. You may use the

ampliﬁer as a template and mark the four screw locations with a felt tip pen. Use caution to make sure there

are no objects behind the installation surface that may become damaged during drilling.

You may use the ampliﬁer as a template and mark the four screw locations with a felt tip pen. Set the ampliﬁer

aside before drilling. Use caution to make sure there are no objects behind the installation surface that may

become damaged during drilling.

If mounting under a seat, make sure there is at least 1-inch (2.5 cm) of space above the ampliﬁer’s heatsink

to permit proper cooling.

The ampliﬁer should be protected from exposure to moisture and direct sunlight. The best places to mount

your ampliﬁer are: The ﬂoor of the trunk, under the driver’s seat, or on the back of the rear seat. For alternate

installation locations, please consult your authorized PowerBass Dealer.

*** WARNING ***

• Upside down mounting will compromise heat dissipation through the heatsink and

could engage the thermal protection circuit.

• Try to avoid mounting the ampliﬁer on a subwoofer enclosure, as extended exposure

to vibration may cause malfunction of the ampliﬁer.

• Don’t mount the ampliﬁer so that the wire connections are unprotected or are sub-

ject to pinching or damage from nearby objects.

• The DC power wire must be fused at the battery positive (+) terminal connection.

Before making or breaking power connections at the ampliﬁer power terminals,

disconnect the DC power wire at the battery end.

• The battery of the car audio system must be disconnected until the entire wiring and

installation is completed.

NOTE: Do not use a drill with driver bit to mount the ampliﬁer. Excessive force could

cause the plastic mounting feet to crack.

CONTROL PANEL LAYOUT

1. Line INPUT (RCA) Jacks

These RCA style input jacks are for use with source units that have RCA line level outputs. A source unit

with a minimum output of 200mV is required for proper operation. However, this input will accept levels up

to 6Vrms.

2. Line OUTPUT (RCA) Jacks

RCA style pass through output jacks allow for a signal to be sent to other ampliﬁers in a daisy-chain

conﬁguration. Only one Remote Bass Control can be used when multiple bass ampliﬁers are connected.

3. GAIN Control

This control is used to match the input sensitivity of the ampliﬁer to the particular source unit that you are

using up to 6 volts.

Fig.2 Panel Layout

4. X-OVER Switch

When switched to LPF this control engages the units Low Pass electronic crossover circuitry. The LPF setting

should be selected with using this as a bass amp only for the subwoofer(s). The FULL position defeats the

crossover and allows the full range of frequencies present at the inputs to feed the ampliﬁer.

5. LPF (Low Pass Filter) Control

This ﬁlter allows low pass of frequency and is adjustable from 40Hz through 250Hz to eliminate unwanted

high frequencies.

6. BASS EQ Control

This equalization circuit is used to enhance the low frequency response of the vehicle’s interior. With up to

18dB of boost centered at 45Hz, the BASS EQ can be adjusted to meet your own personal taste.

7. REMOTE Gain (RJ45 Jack)

This is the connector port for the Remote Level Control. Now the ampliﬁers secondary gain circuit can be

adjusted from the driver’s seat.

8. BADGE Switch

Controls the lighting of the top mounted PowerBass logo badge.

9. POWER/STATUS Indicator

The BLUE L.E.D. lights up when the power is on. This L.E.D. turns RED constantly or ﬂashes when the built-in

protection circuitry is activated. This indicates a problem with the system in relation to the ampliﬁer (see

Troubleshooting Tips).

10. SPEAKER Output Terminals

As shown in the wiring diagrams, be sure to observe speaker polarity through the system and speaker imped-

ance. This specially tooled terminal is designed to accommodate up to 10 gauge speaker wire.

11. FUSES

For convenience most PowerBass AutoSound ampliﬁers utilize common automotive ATC type fuses. For

continued protection in the event that a fuse blows, replace the fuse only with the same value.

CAUTION: These power fuses on the ampliﬁer chassis are for protecting the amp against over-

drive. To protect the vehicles electrical system, an additional fuse should be used within 18-inch-

es (45cm) of the battery on the 12V+ cable.

ASA3-400.1 20A x 2

ASA3-600.1 40A x 2

12. BATT+ (Power Input Connection)

This terminal is the main power input for the ampliﬁer and must be connected directly to the positive (+)

terminal of the car battery. This solderless terminal accepts up to 2 gauge wire (see Power Cable

Selection Chart for recommended wire gauges).

13. REM (Remote Input Connection)

All PowerBass AutoSound ampliﬁers can be turned on by applying 12 volts to this terminal. This can be

found on the rear of the source unit in the form of an electric antenna output, or a remote output. If this is

not available you can wire to the ACC position on the key. An 18 gauge wire is sufﬁcient to run the REMOTE.

14. GND (Ground Input Connection)

A good quality ground is required for your PowerBass AutoSound ampliﬁer to operate at peak performance.

A short length of cable, no longer then 36-inches (90cm) of the same gauge as your power cable should be

used to attach the ground terminal directly to the chassis of the vehicle. Make sure that all of the paint is

sanded or scraped away to ensure a quality ground connection.

*** WARNING ***

Disconnect the negative (-) battery terminal before you start any wiring work! The battery of your

car audio system must be disconnected until the entire wiring installation is completed.

Your PowerBass Autosound amp will draw large levels of current, so use the largest gauge power/ground

cable as possible. Using under sized power cable can result in unnecessary over-heating of the ampliﬁer,

distortion at high volume levels and might even cause the thermal protection circuitry to shut-off the ampli-

ﬁer.

• Use rubber grommets when running cables through any metal or sharp plastic, to prevent accidental

shorting or shearing. Make sure the cables do not interfere with normal operation of the vehicle.

• The audio signal cables (RCA interconnects) should be kept far away from any potential sources of

electrical interference such as electronic vehicle management systems (relays, engine computers wir-

ing harnesses, fuel pumps etc.)

POWER WIRING AND SIGNAL CONNECTIONS

This ampliﬁer is designed to work within a 9 to 17 volt DC range. Before any wires are connected, the

vehicles electrical system should be checked for correct voltage supply with the help of a voltmeter.

First, check the voltage at the battery with the ignition in the OFF position. The voltmeter should read no

less than 12V. If your vehicles electrical system is not up to these speciﬁcations, we recommend having it

checked by an auto electrician before any further installation. Once the vehicle is checked, make certain the

correct cable gauge is used. We recommend using as large a gauge cable as possible, use the Power Cable

Selection Chart to calculate the correct power wire size for your application.

BATT+ (Power)

This ampliﬁer should be wired directly to the vehicle battery using the appropriate size cable. Start at the

vehicle battery and run the power cable through to the ampliﬁer. Avoid running the power cable over engine

components and near heater cores. The use of an inline fuse or circuit breaker is a must; this will

prevent the risk of a potential ﬁre caused by a short in your power cable. Connect the fuse holder or circuit

breaker as close to the battery positive (+) terminal as possible (no farther then 18” from that battery). This

fuse or circuit breaker should be no greater then the sum of the fuses found on the chassis of your ampliﬁer

(also see speciﬁcations chart). You may now connect the cable to the battery, but remember to leave the fuse

out or circuit breaker “off” until all other cable connections are made.

Fig.3 Power Input Connection

GND (Ground)

When grounding your ampliﬁer, locate a metal area close to the ampliﬁer that is good source of ground

(preferable the ﬂoor pan). Once again, investigate the area you wish to use for electrical wires, vacuum lines,

and brake or fuel lines. Use either a wire brush or sandpaper to eliminate unwanted paint for better contact

of the ground.

Secure the ground cable to the body using a bolt, star washer and nut. Spread silicon over the screw and

bare metal to prevent rust and possible water leaks.

Now it’s time to connect the power and ground cables to the ampliﬁer. Cut both cables to length.

Strip off 1/2 inch (12mm) of the insulation so that the bare wire ﬁts all the way in the terminal block on the

side panel of the ampliﬁer, seating it ﬁrmly so no bare wire is exposed. Use a Philips screwdriver to loosen

the BATT+ and the GND connections on the ampliﬁer. Insert the ground ﬁrst, and then the +12V and please

make sure that you place them into the correctly marked terminals. Then tighten the screws down securely.

REM (Remote Trigger)

This terminal must be connected to a switched +12V source. Typically, remote turn-on leads are provided at

the source unit that will turn on and off the ampliﬁer in correspondence with the source. If the unit does not

have a remote turn-on head, then a switched +12V supply must be used, like the ACC, +12V.

Run a minimum of 18 gauge wire from the ampliﬁer location to the source of the switched +12V lead. If

possible, route this wire on the same side of the vehicle as your power cable. Connect the source remote

output to the wire. Go back to the ampliﬁer and cut the wire to length. Loosen the screw terminal marked REM

on the ampliﬁer. Insert the stripped (bare) portion of the wire into the terminal and tighten the screw securely.

Fig.4 A good ground is essential to proper operation

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