Linear Power 2202 Istruzioni per l'installazione e il funzionamento

™

F O R T H E L O V E O F M U S I C

MODEL 2202

(1989 - MSRP $549.00)

OWNER’S OPERATION MANUAL AND

INSTALLATION GUIDE

INTRODUCTION

Power Supply: Self oscillating for reliability and efficiency. The transformer is

epoxy dipped for extreme vibration resistance. Banks of high-speed TO-3

switching transistors provide massive current reserves.

Output Stages: Transformerless, direct coupled and fully complimentary. Output

transistors are high current and low distortion TO-3 devices, operating at a

fraction of their limitations.

Protection: Our stable amplifier design is made virtually indestructible by three

protection circuits. One is a precision thermal protection circuit, which prevents

damage from high frequency oscillation, or an excessive ambient temperature.

The second protection circuit is a current sensing device guarding against

instantaneous abnormalities, such as short circuits. Both of these circuits

automatically reset. The third form of protection guards against component

damage from reversed power connections.

Construction Features: Our unique, variable input sensitivity control permits

optimal signal matching for lowest noise and lowest distortion with virtually any

source. All components used are rated for at least 150% of their intended use,

and are mounted on double-sided fiberglass epoxy circuit boards.

Quality Control: In-house construction of critical components like transformer

and chassis, as well as total assembly, allows LINEAR POWER™ to maintain

uniform quality. 100% of the finished units are tested, then burned in for four

hours, and tested again. Amplifiers, which pass this rigorous test, have truly

earned the LINEAR POWER™ logo.

LINEAR POWER™ is a trademark of Linear Power, Inc. 1

INSTRUCTIONS

Read the following instructions through completely. If they appear to complex, we

recommend you have an authorized LINEAR POWER™ dealer do the work.

MOUNTING

1. The amplifier works best if it is kept as cool as possible. Mount in a position

that allows air to flow freely through the fins. Be sure there is ample space above

the amplifier to avoid trapping heated air rising from the amplifier. The amplifier

should not be mounted upside down. Avoid mounting any amplifier in the dash or

on the firewall to avoid noises being radiated directly onto the case.

2. Mount the amplifier in a position that allows ample room for gain adjustments,

and the installation, removal and attachment of leads.

3. The case of your amplifier is designed to act as a noise shield. To maintain

this protection, be sure the metal case of the amp does not touch the metal of the

car. Do not remove or damage the rubber grommets, which provide electrical

insulation and vibration isolation.

WIRING

1. Disconnect the negative ground cable from your vehicle's battery before

making any power connections to your amplifier.

2. Connect the black negative power wires from the amp to a solid frame

member via a bolt or self-tapping screw. This connection must be to a clean,

unpainted surface. Always attach the ground wire first when installing this

amplifier, and disconnect the ground last when removing this amp from the

system.

3. Two fuses of the proper size must be installed in line with the main power in

order to prevent damage to your wiring. They should be connected within 18

inches of the battery on the positive terminal. Use the fuse holders and fuses

provided, and replace only with the same size fuses. The Model 2202 uses two

AGC 30 fuses. Do not install fuses until you have completed installing the

amplifier.

WARNING: USE OF OVERSIZE FUSES WILL DAMAGE YOUR AMPLIFIER

4. The other end of the fuse holders should be connected to the positive power

wire from the amplifier. To extend the length of the power lead, use two 12 gauge

wires or larger to reduce power loss. A single 8 gauge or larger wire may be

substituted, but don't use smaller wires.

LINEAR POWER™ is a trademark of Linear Power, Inc. 2

5. The red and white wire acts as an electrical switch to turn the amplifier on and

off. It should be connected to the power antenna lead from the radio. Where no

power antenna lead exists, a source of 12 volts connected through a toggle

switch will do. Do not connect the red and white wire directly to a source that will

leave the amplifier permanently on as this will drain the battery.

6. The RCA (Phono) jacks will accommodate either high or low level signals,

ranging from 200 mV to 5 volts. For low-level signals, always use shielded cable

and avoid routing signal cables in the vicinity of any power wires. The center pin

of the RCA plug is ALWAYS the positive input connection.

7. As shipped from the factory, the Model 2202 will be set up as a normal stereo

amplifier, and ready for a 4 ohm load on each channel. If you wish to engage one

of the optional functions of this amplifier, remove the main power fuses to avoid

the risk of electrical shock from the high voltage present inside the case of the

amp, then remove the bottom cover.

BRIDGED MONO OPERATION

Locate the switch mounted on the printed circuit board near the speaker

connector marked: "Stereo/Bridged." Move to "Bridged" position. The left

positive speaker wire is now the +speaker output, with the right positive speaker

wire becoming the -speaker output. The two negative speaker outputs will not be

used. Using only the left input jack, the amplifier will now operate as a bridged

mono amplifier.

The wiring for the bridged mono mode is as follows:

With the connector end of the amplifier facing you, top side up, the speaker

terminal block is arranged: LEFT (-); LEFT (+); RIGHT (+); RIGHT (-). The mono

mode uses the LEFT (+) and RIGHT (+) connections. An electronic crossover,

such as the XO3, should be used to limit the frequency range to the input of the

amplifier for best results.

TWO-OHM CAPABILITY

Unplug the two jumper wires near the four large filter capacitors from the lugs

marked 4 ohm and press them firmly back onto lugs marked 2 ohm. This will

allow the amplifier to operate into a 2-ohm stereo load on each channel, or a 4-

ohm mono load when used in bridged mono mode.

SPEAKER OUTPUT - MODEL 2202

The output current capability of the 2202 exceeds the rating of standard speaker

plugs. To ensure a good connection with this much power, a terminal strip is

used. The speaker cables can be brought directly to the amplifier and connected

as follows for stereo use: LEFT (-); LEFT (+); RIGHT (+); RIGHT (-).

LINEAR POWER™ is a trademark of Linear Power, Inc. 3

OPERATION / ADJUSTMENT

For any system to operate at minimum distortion with minimum noise and still

reach full power output, the equipment should be aligned to operate at the same

point on the distortion curve at the same time. In a basic system, using a single

amplifier, set the amp sensitivity adjustment to minimum, turn the deck up until it

just starts to distort, then back down slightly. This is the point where the output of

the deck is cleanest. Now, bring the sensitivity control of the amp up until it just

starts to distort, and back it down slightly. This will allow the amp and the deck to

reach maximum usable output at the same time.

GENERAL TROUBLESHOOTING

NO SOUND: Check all connections. Check main power fuses. Check accessory

fuse. With a trouble light or meter, be sure +12v is present at the amplifier on the

power wires and the red/white turn-on wire. Check for a good ground connection.

Check by substitution, or other method, for proper operation of music source.

BLOWS FUSES: Check all connections to be sure power wires and speaker

wires do not touch each other or ground. Re-check polarity of main power wires.

Check impedance of speaker loads and setting of the internal power taps to

insure proper match.

SHUTS OFF: As this amplifier is equipped with thermal and short circuit shut-

down electronics, in the event of high ambient temperature or improper speaker

impedances, the amp will turn itself off. To avoid damage to speakers, turn down

the volume while waiting for the amp to turn itself back on. If this occurs

repeatedly, use a fan to cool the amplifier and check for proper speaker loads

and connections.

SERVICE OR REPAIR

To obtain modification, service or repair, please contact our ONLY Authorized

LINEAR POWER™ Product Service Center:

T.I.P.S. INC.

3455 Lanell lane, Pearl, MS 39208

(601) 932-8477

E-mail: [email protected]

3 4 5 5 L A N E L L L A N E, P E A R L, M S 3 9 2 0 8 (6 0 1) 9 3 2 – 8 4 7 7

™

LINEAR POWER™ is a trademark of Linear Power, Inc. 4

SPECIFICATIONS

2202©

RATING 4 OHM 2 OHM

Minimum continuous average power output

per channel both channels driven, from

20HZ to 20KHZ with no more than 0.09%

total harmonic distortion

110 110**

Bridged mono power ratings

(14.4Volts DC operation) 285 (8 ohm spkr) 285**(4 ohm spkr)

Frequency Response +-1dB 19HZ to 30KHz

Signal to noise ratio

(A-weighted) 95 or greater

Damping factor @ 4 Ohms 210 at all frequencies

Input sensitivity for rated output at

minimum and maximum gain settings 150 mV to 5V

Maximum rated current 38A 50A

Input impedance 50K OHM

Rise time

(Slew rate) 16v/micro Second

Dimensions 3.0"H x 9.5 "W x 9.75"L

Fuse Rating (2 x 30 Amp AGC) 60 A

** 2-ohm power rating is tested with the power supply taps in the 2-ohm setting,

leaving the taps in the 4 ohm setting will generate considerable additional power

however it is not suggested or recommended.

™

3 4 5 5 L A N E L L L A N E, P E A R L, M S 3 9 2 0 8 (6 0 1) 9 3 2 – 8 4 7 7

LINEAR POWER™ is a trademark of Linear Power, Inc. 5

LINEAR POWER™ is a trademark of Linear Power, Inc. 6

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