Radio Shack XL-400 User Manual

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XL-400 High Power 4/3/2-Channel Bridgeable Amplifier
Owner’s Manual
Please read before using this equipment.
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Features .................................................................................................................................. 3
Preparation ............................................................................................................................. 4
Supplied Hardware ............................................................................................................ 4
Choosing a Mounting Location .................................................................................. 4
Preparing the Mounting Area ..................................................................................... 5
Routing Cables and Wires ......................................................................................... 5
Installation Order ........................................................... ..................................... ............... 5
Before You Make the Connections .................................................................................... 5
Connecting Ground and Switched/Primary Power ............................................................ 6
Connecting Inputs ................................................ .................................................................. 8
Low-Level Inputs ............................................................................................................... 8
High-Level (Speaker Wire) Inputs ..................................................................................... 9
Four Speaker Outputs ............................................................................................. 10
Two Speaker Outputs .............................................................................................. 11
Connecting Speakers ...................................................................................................... 12
Preparing the Speaker Wires ................................................................................... 12
Connecting Four Speakers ...................................................................................... 13
Connecting Two Speakers (Unbridged Connection) ................................................ 13
Connecting Two Speakers (Bridged Connection) .................................................... 14
Connecting Two Speakers and One Subwoofer (Unbridged Connection) ............... 14
Connecting Two Unbridged Speakers and One Bridged Subwoofer ....................... 15
Completing the Installation ................................................................................................. 16
Testing the Connections .................................................................................................. 16
Mounting the Amplifier .................................................................................................... 16
Operation .............................................................................................................................. 18
Turning On the Amplifier ................................................................................................. 18
Adjusting the Audio Level ................................................................................................ 18
Adjusting Frequency Crossover ...................................................................................... 19
Troubleshooting ................................................................................................................... 20
Care ................................................................................................................................ 21
Replacing a Fuse ..................................................... .. ... .................................................. 21
Replacing the SFE-Type Fuse ................................................................................. 21
Replacing the Blade-Type Fuses ............................................................................. 21
Specifications ....................................................................................................................... 23
©
2000 Tandy Corporation.
RadioShack and RadioShack.com are trademarks used by Tandy Corporation.
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All Rights Reserved.
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Features
Your RadioShack High Power 4/3/2-Chan­nel Bridgeable Amplifier produces a total of 400 watts to give added punch and power to your vehicle’s existing auto sound system.
The amplifier produces up to 200 watts per channel (if bridged) of clean, powerful sound at all audio frequencies with minimum distor­tion. You can connect your auto sound sys­tem’s low-level or speaker-level outputs to this amplifier.
Its features include:
14K Gold-Plated Noise-Isolated Low-Lev­el Input Jacks
(preamplifier) signal inputs to match your auto sound system’s output for the best high­fidelity performance.
14K Gold-Plated Speaker Terminals
signed for low impedance, high conductivity, and minimum corrosion, to provide the high­est signal transfer and lowest sound distor­tion.
Input Level Controls
level of the audio signals that enter the am­plifier.
Automatic Power Switching
matically turn the amplifier on or off when you turn your auto sound system on or off (depending on how you hook up the amplifi­er).
Bridging Capability
amplifier’s four 100-watt channels so you can use the amplifier with only two channels that produce a total of 200 watts from each chan­nel.
Mute Turn On Circuit
thump you hear when you turn on some am­plifiers.
— let you connect low-level
— de-
— let you adjust the
— can auto-
— lets you combine the
— eliminates the
Power Indicator
supplied to the amplifier.
Protection Indicator
shuts itself down.
Crossover Frequency Circuit
adjust the crossover frequency from 45–400 Hz. This lets you set up the amplifier so you can connect a subwoofer.
Short Circuit Protection
plifier’s sound if any output channel shorts, alerting you to turn off the auto sound sys­tem.
Auto-Off
plifier to protect the amplifier from overheat­ing or input overloads. The amplifier restarts automatically when it cools or the problem is corrected.
— temporarily shuts down the am-
— lights when power is
— lights if the amplifier
— lets you
— distorts the am-
THE FCC WANTS YOU TO KNOW
Your amplifier might cause TV or radio inter­ference even when it is operating properly. To determine whether your amplifier is caus­ing the interference, turn off your amplifier. If the interference goes away, your amplifier is causing it. Try to eliminate the interference by:
• moving your amplifier away from the receiver
• contacting your local RadioShack store for help
If you cannot eliminate the interference, the FCC requires that you stop using your ampli­fier.
Features
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Preparation
SUPPLIED HARDWARE
Your amplifier comes with the following items. Be sure you locate everything shown before you store or dispose of the packing materials.
Power Wire (Red) (1)
Ground Wire (Black) (1)
Remote Wire (Blue/White) (1)
4-Pin Connector with Wire (2)
Sheet Metal Screws (4)
BEFORE YOU BEGIN THE INSTALLATION
Before you install your amplifier, read all the instructions in this owner’s manual. You should be able to answer all of the se ques­tions about your vehicle’s electrical and auto sound systems.
• Does my vehicle have an auto sound system, such as a car stereo or CD player, already installed? (You must have an existing auto sound system to use this amplifier.)
• How do I connect a wire to the fuse box?
• Which of the auto sound system’s wires is the power wire?
• Which of the auto sound system’s termi­nals are low-level outputs and which are high-level (speaker) outputs?
Flat Washers (4)
Lock Washers (4)
Also, be aware that installation in your vehi­cle might require cutting or modifying your vehicle.
Twist-On Terminal Connectors (9)
Choosing a Mounting Location
A good location for mounting the amplifier is in your vehicle’s trunk. Wherever you decide to mount it, choose a mounting location that:
• Does not interfere with the vehicle’s operation
• Lets you drill mounting holes without damaging other vehicle component s
• Allows enough space around the cooling fins for proper airflow and cooling
• Lets you easily see the amplifier’s POWER and PROTECTION indicators
4
Preparation
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Warning:
is on. Do not touch the amplifier or place flammable objects near it.
The amplifier gets very hot while it
Preparing the Mounting Area
Before you mount the amplifier, make sure you have these materials.
• an adapter harness
• additional wire
• shielded audio cables
• 16- or 18-gauge marked or color-coded wires
Then confirm that the amplifier fits in your ve­hicle’s available mounting area. This amp lifi­er requires a 5 wide by 171/2-inch deep (13.9 × 34.3 × 43.1 cm) mounting area with adequate ventilation space.
1
/2-inch high by 131/2-inch
Routing Cables and Wires
Avoid routing the connection cables and any speaker wires near moving parts or sharp edges. You can usually route wires and ca­bles along the wiring channel beneath the vehicle’s door facings by carefully removing the molding that holds the carpet in place. Af­ter routing the cables and wires, replace the molding.
INSTALLATION ORDER
For trouble-free installation, simply follow the sections in this owner’s manual in order. First make all the connections by temporarily con­necting the amplifier to:
1
Ground and power
Then test the connections. When you verify that everything works as expected, discon­nect the amplifier, mount it in your vehicle, and reconnect it.
Caution:
in the order shown, damage to the amplifier and your auto sound system is possible if any wire connections are made incorrectly.
Note:
you plan to connect with the name of the ter­minal you will connect it to.
If you do not make the connections
For easier installation, mark each wire
BEFORE YOU MAKE THE CONNECTIONS
The supplied connection cables include all the lead wires you need to connect the am­plifier to ground, power, and your existing auto sound system.
Important:
• Do not cut these wires. If you cut any wire, you cannot obtain a refund or exchange on this product. However,
will
RadioShack vice if you cut a wire and find the prod­uct is defective.
• If the connectors on your vehicle’s auto sound system are not compatible with the amplifier’s connectors, you might need an adapter harness to complete the connections. RadioShack stores sell adapter harnesses for most vehicles.
You might need additional wire, depending on your individual auto sound system, to complete the connections. Your local Ra­dioShack store carries a full line of wire and wire management accessories.
provide warranty ser-
2
Your auto sound system’s outputs
3
Your speakers
Preparation
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Cautions:
100 watts per channel if you connect your auto sound system to two pairs of
• For added safety and to protect your amplifier and auto sound system, dis­connect the cable from your vehicle’s
negative (
) battery terminal before you
begin.
• Be sure your speakers can handle as much as 400 watts of power (200 watts per channel if you connect your auto sound system to one pair of speakers
speakers or one pair of speakers and a subwoofer). Each speaker must have an impedance of at least 4 ohms. Y our local RadioShack store carries a full line of speakers.
To make it easier to gauge wire length and connect the amplifier, temporarily place the amplifier as close as possible to the selected mounting location.
and bridge the amplifier’s outputs, or
CONNECTING GROUND AND SWITCHED/PRIMARY POWER
Fuse
Red
Black
Holder
Blue/White
Chassis Ground
Vehicle’s Battery
Auto Sound System
Follow these steps to connect the amplifier to ground, switched power, and primary power.
1. If you have not done so already, discon­nect the cable from your vehicle’s nega­tive (–) battery terminal.
2. Use a screwdriver to connect the spade end of the supplied black ground wire to
GND
the amplifier’s
(ground) terminal.
3. Connect the black ground wire’s other end to a chassis ground, such as a metal bolt attached to a metal part of the vehicle’s frame. Be sure the bolt is not
6
Preparation
Switched Power Lead
insulated from the chassis by a plastic part.
4. Use a screwdriver to connect the spade end of the supplied blue/white wire to
REM
the amplifier’s
(remote power) ter-
minal.
If your auto sound system has a
5.
switched power lead
, connect the blue/ white wire’s other end to your auto sound system’s switched power lead using one of the supplied twist-on termi­nal connectors.
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This connection turns on the amplifier
when you turn on the auto sound sys­tem, and turns off the amplifier when you turn off the auto sound system. This prevents your vehicle’s battery from being drained if you leave your amplifier on when you turn off your auto sound system.
If your auto sound system does not have
a switched power lead
, connect the blue/white wire’s other end to a point in your vehicle’s fuse block that has power only when you turn on the ignition or turn the key to ACC.
This connection turns on the amplifier
when you turn on the ignition or turn the key to ACC, and turns off the amplifier when you turn off the ignition. This pre­vents your vehicle’s battery from being drained if you leave your amplifier on when you turn off the ignition.
6. Use a screwdriver to connect the spade end of the supplied red power cable (with in-line fuse holder) to the ampli-
+ 12V
fier’s
terminal.
7. Connect the other end of the red power cable to your vehicle’s positive (+) bat­tery terminal. Then tighten the terminal.
Caution:
Due to the amplifier’s high cur­rent requirement, you must connect the red power cable’s fused end directly to the vehicle’s positive (+) battery terminal or damage to your vehicle’s wiring could result.
Do not reconnect your vehicle’s negative (–) battery cable yet.
Preparation
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Connecting Inputs
LOW-LEVEL INPUTS
You can connect your auto sound system’s low-level line out jacks to the amplifier’s low­level line in jacks.
If your auto sound system does not have low-level line out jacks, see “High-Level
If your auto sound system has four separate line out jacks
2. to the amplifier.
(Speaker Wire) Inputs” on Page 9 to connect your amplifier.
Note:
dio cables (not supplied) available at your lo­cal RadioShack store.
1. Temporarily place the amplifier as close
CH 3
CH 4
For the best results, use shielded au-
as possible to the selected mounting location.
, connect the auto sound system
CH 2
CH 1
Right Rear
Auto Sound System
Left Rear
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Connecting Inputs
Right Front
Left Front
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