Power bass BTA-8 Guide de l'utilisateur

Amplified Bass System

Application Guide

BTA-8

Thank you and Congratulations

Congratulations on your purchase of a PowerBass Autosound speaker system. You now own a

speaker of uncompromising design and engineering from a factory that truly believes in the relent-

less pursuit of perfection. Incorporating the highest quality parts and state-of-the-art materials,

these speakers display the ultimate balance between high ﬁdelity, performance and long-lasting

reliability.

At PowerBass USA, Inc. we are conﬁdent you will have many years of outstanding enjoyment from

this great SPEAKER investment. For maximum performance we recommend that you have your new

PowerBass Autosound product installed by an Authorized PowerBass Autosound Dealer.

To learn more about PowerBass, please visit us on the World Wide Web at

http://www.powerbassusa.com

∆Warning ∆

Continuous exposure to sound pressure levels in excess of 100 dB can cause permanent hearing loss. PowerBass Autosound

Speakers are capable of producing sound pressure levels well over 170 dB. Please observe all local sound ordinances while

listening to your PowerBass Autosound system. PowerBass USA, Inc. accepts no liability for hearing loss, bodily injury, or

property damage due to the result of use or misuse of this product.

POWERBASS AMPLIFIED BASS SYSTEM FEATURES

Built-in 150 Watt Ampliﬁer: Contains a high power Class A/B monaural ampliﬁer complete

with chassis mounted adjustable Gain, Low Pass Filter and Bass Eq controls for sonic integration

into most existing factory or aftermarket car stereo systems and engineered perfectly to power the

subwoofer.

Remote Subwoofer Gain Control: This wired remote functions as a Bass Boost and can

provide 0-18dB of gain at 45Hz. The remote will not increase the output beyond the GAIN

setting on the back of the ampliﬁer. Supplied with XXft of cable it can reach your dash even when

the BTA-8 is mounted in the trunk.

Tunnel Port Design: Large tunnel serves as a tuning port that “pushes” bass from the front

loaded woofer for maximum output using a small footprint enclosure.

Bass Reﬂex Single Port System: For increased efﬁciency at low frequencies. The corner

loaded design works to produce a concentrated bass output which is ampliﬁed by ﬁring into hard

surfaces giving the bass “kick” normally associated with much larger woofers.

Polypropylene Cone with Rubber Surround: A thermoplastic polymer cone was selected to

help resist moisture and other elements while the rubber surround offers more excursion as well

as protection against deterioration than other materials.

BASV High Temperature Voice Coil: These specially designed resin coated high temperature

voice coils measure a full 1.5-inches in diameter to ensure high power handling and precise

linear excursion while maximizing thermal heat dissipation.

Adjustable Mounting Straps: Two adjustable mounting straps are supplied to anchor the

enclosure to your vehicle while allowing for easy removal if necessary.

Additional Features: Carpeted enclosure, acoustically transparent speaker grill, professional

mounting hardware and wiring harness adds further value to your investment.

SPECIFICATIONS FOR BTA SERIES SUBWOOFER SYSTEM

(Due to Constant Improvements, Speciﬁcations and Parameters are subject to change without notice.)

Model Size System

Impedance

Frequency

Response

Sensitivity

1W/1M

Magnet

Size

Voice Coil

Dia.

Amp Power

RMS/Peak

BTA-8 Single 8” 4-ohm 35Hz-250Hz 95dB 40 oz. 1.5” 150W/300W

UNPACKING THE ENCLOSURE

Every attempt has been made to transport your new PowerBass BTA subwoofer system safely.

Carefully unpack the enclosure and inspect it thoroughly for any damage that may have occurred

during shipping. Notify your local PowerBass dealer immediately should you notice any damage prior

to installing the unit. Be sure to keep the carton and packing material until your system is operational.

The original boxes will do the best job of protecting your speaker system if they need to be transported.

INSTALLATION EXPERIENCE

Installation of PowerBass Autosound Speakers requires experience with a variety of mechanical and

electrical procedures. This manual only provides general installation and operating instructions. If you

have any reservations about your installation skills or lack the proper tools, please contact your local

PowerBass Autosound dealer for assistance.

IMPORTANT: This ampliﬁed subwoofer system is designed for operation in vehicles with 12-

volt Negative ground electrical systems only.

ENCLOSURE PLACEMENT TIPS AND RECOMMENDATIONS

Your PowerBass Ampliﬁed Bass system must be properly placed in the vehicle for optimum per-

formance. The output of the woofer needs to be “corner loaded” against the walls of the vehicle to

produce the most bass (hard surfaces work best). Since the output of the woofer will be “corner

loaded”, the best location is likely to be to the front or rear corner of a trunk or luggage compart-

ment. However, don’t be afraid to experiment with the placement as a little time and effort can have

a great effect on the amount of bass produced. Below are some placement suggestions:

1) The ampliﬁer end (opposite the woofer and grill end) should be facing into a corner. See the

various conﬁgurations in Fig 1.

2) Ideally there should be several inches clearance between the ampliﬁer and the corner it is point-

ing into. Make sure the open area (port) above the ampliﬁer is not obstructed.

3) When all connections are made the ﬁnal step should be to secure the enclosure using the mount-

ing straps provided so it remains in place.

WARNING: Make sure where ever you choose to place the BTA-8 it’s a dry location on a solid

surface. Take care that none of the mounting screws will pierce any wiring harnesses, brake or fuel

lines, the vehicles fuel tank, spare tire or any other parts of the vehicle. Some or all of these may

be located behind or under the mounting surface.

NOTE: Due to the shifting and jarring that will occur in a vehicle, the mounting straps may stretch

or loosen. It is recommended that you check the straps regularly to ensure the enclosure remains

mounted securely.

Fig.1

Hatchback or Pickup Sedan

Behind seats

Trunk

woofer/grill side

ampliﬁer side

AMPLIFER CONTROL PANEL LAYOUT

Fig.2

1. HIGH INPUT

Use this High Level 4-pin Molex style input when connecting to the speaker leads directly from a factory

radio without the use of a low level convertor. Be sure to observe the correct speaker polarity (Do not use if

you are using the LOW INPUT from the RCA jacks).

2. REMOTE Gain (RJ45 Jack)

This is the connector port for the BTA Remote Gain Control. Now the ampliﬁers secondary gain circuit can

be adjusted from the driver’s seat.

3. LOW 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 500mV is required for proper operation. However, this input can accept levels up

to 4Vrms.

4. GAIN Control

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

using up to 4 volts. Please note the GAIN control is not a volume control, it is a level match.

5. LPF (Low Pass Filter) Control

This ﬁlter allows low pass of frequency and is adjustable from 40Hz to 250Hz. A setting of 40Hz will produce

only low frequencies (deep bass). A setting of 250Hz will allow the ampliﬁer to produce a more punchy

(higher) bass response.

6. BASS EQ Control

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

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

– by boosting the Bass EQ to its full +18dB you are asking the ampliﬁer to work 10 times harder!

7. STATUS Indicator

This RED L.E.D. glows only when the built-in protection circuitry is activated. This indicates a problem with

the system in relation to the ampliﬁer and/or wiring (see Troubleshooting Tips).

8. POWER Indicator

This GREEN L.E.D. lights up when the power is on and the system is wired correctly.

9. POWER PLUG-IN Connector

This 6-pin Molex style connector is where the wiring harness plugs in for the power (+12V), ground (GND)

and remote turn-on (REM) wires.

10. FUSE 20A

For convenience the ampliﬁer uses a common automotive ATC type fuse. For continued protection in the

event a fuse blows, replace only with 20 Amp (Yellow ATC) fuse. Substitution or deletion of the fuse will void

the product warranty and may cause damage to your car or the ampliﬁer.

CAUTION: The power fuse on the ampliﬁer chassis is to protect the amp against overdrive. To protect the

vehicles electrical system, an additional fuse must be used within 18-inches of the battery on the +12V

cable.

14.5" (368mm)

21.5" (546mm)

10" (254mm)

ENCLOSURE DIMENSIONS AND SPECIFICATIONS

NOTE: The speaker system should be secured to protect the enclosure from moving. Before ﬁnal

mounting, be sure to check the sound one last time and make sure the enclosure is properly

placed to produce the desired bass output. Use the two mounting straps provided and wrap them

around the enclosure as shown in the drawing above-a strap should be placed on each side of the

embroidered PowerBass logo to be most effective. Next secure the enclosure by screwing through

the strap with the self-tapping screws provided, then tighten the straps.

When mounting in a trunk, try to make sure the enclosure is positioned in a manner that packages

and luggage will not slide and hit the protective woofer grill.

In some cases where there is no ﬂat or even mounting area, it may be necessary to use a wooden

board to fasten the enclosure to and properly secure the mounting straps.

Mounting Straps

Note: Remove any paint

below ring connector

Star Washer

Ring Connector

Ground Wire

Fig.3

POWER WIRING AND SIGNAL CONNECTIONS

POWER CONNECTION

Power Plug In A 6-pin Molex style wiring harness has been supplied to wire up the Power,

Ground and Remote Turn-on as follows:

+12V Connect the two twisted Red wires to 12 Volt positive. To lengthen the wire harness splice

at least 12 gauge wire (10 gauge for runs longer than 10 feet) directly to the battery. Route the

wire through a rubber grommet in the vehicles ﬁrewall. If there is no factory grommet available,

you will need to install one.

IMPORTANT—You MUST install a fuse holder with a 20A fuse in line with the power cable no

further than 18-inches from the battery.

REM Connect the single blue wire to the radio power antenna lead or remote output. This wire is

responsible for turning the ampliﬁer on and off. If the source unit (radio) is not equipped with a

Remote lead you can connect this wire to an accessory or ignition point at the vehicle fuse block.

In this type of installation, the ampliﬁer will be on whenever the ignition is on. To lengthen this wire

use at least 18 gauge wire and run it with exactly the same care and attention as the +12V power

cable.

GND Connect the two twisted Black wires directly to the chassis of the vehicle. The length of

these wires should be kept to an absolute minimum and should be terminated to bare metal using

a ring terminal (see Fig 3). Should you need to lengthen the wire harness use the same gauge wire

as was run for the positive 12 Volt connections as noted above.

NOTE: When lengthening any of the wire leads on the Power Plug-in it is recommended the wires

be soldered and taped for optimum connection and to ensure against electrical shorts.

Bolt

INPUT SIGNAL (Choosing the High or Low Inputs)

The BTA-8 input signal connects to the head unit’s High Level (speaker wire) output OR Low Level

(RCA) output—provided the radio is so equipped with Line Out. A dedicated subwoofer or low level

signal will deliver the best performance. If unavailable use the high level inputs, as will be the case

with most factory head units. (Note once you have chosen whether you will use the High Level or

Low Level inputs follow the corresponding wiring diagrams on the following pages)

NOTE: Never use BOTH High and Low Level inputs at the same time. You must select one or the

other!

High Level Input Connections (ﬁg 4)

For radios with only speaker outputs (including most Factory source units). Using the 4-pin Molex

style wiring harness provided, splice directly into the radio’s speaker outputs. Do not break the

connection with the source (radio) and the speakers. Be sure to maintain proper speaker polarity.

Another option is to tap off the existing front or rear full range speakers. Once again be sure to

follow the correct polarity

Wire Color Connect to

Green w/ White stripe

Green

Gray w/ White stripe

Gray

Left +

Left -

Right +

Right -

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