Linear Power 502HV Manuale di programmazione

MODEL 502HV©

(1996 - MSRP $1099)

OWNER'S MANUAL AND

INSTALLATION GUIDE

502HV©COMPETITION CHALLENGER

A new approach in competition amplifiers is here...The LINEAR POWER™

502HV©amplifier is a 25-watt per channel amplifier with extremely low distortion

and lots of dynamic headroom. We have utilized TO-3 transistors throughout the

amplifier for the highest reliability and unmatched sound quality.

LINEAR POWER™ designers and engineers listened to the suggestions of

seasoned competitors to find the right foundation for this amplifier. We chose an

amplifier that has been tried and tested in challenging situations. We then took

the next step of deciding on an operating format that went against conventional

competition designs. LINEAR POWER™ engineers were convinced that the HV©

(HIGH VOLTAGE) competition amplifier would be much more stable and

controllable, establishing high damping factor and unmatched dynamic

headroom, than ANY high current design amp. Distortion at rated power is

extremely low and the unregulated power supply is capable of delivering serious

output when needed - NOT to extremely low impedances - but to higher

impedances where sound quality can be assured. This can be done due to

the extreme HIGH VOLTAGE design of the HV©amplifier. There is no need to

have low impedance loads to stress the amplifier to make power. The minimum

operating impedance of the 502HV©is 2 ohms stereo or 4 ohms mono,

eliminating the need for multiple drivers to lower the impedance load to get

maximum power output. A benefit of HIGH VOLTAGE design is less heat and

lower current draw from your electrical system, at the same time, delivering the

power that you want.

Features include the LINEAR POWER™ DYNAMICS IMPROVING

PROCESSOR©or D.I.P. "Bass Boost" switch, which adds 6dB of gain at 45 Hz

for that additional 'OOMPH', if needed. The 502HV©also has an inverted channel

so that the amp will bridge without he use of an internal bridge switch or external

bridging module. This inverted channel also allows the 502HV©to play in

stereo/mono mode simultaneously. With all the 502HV©delivers, it could be the

final element needed to dominate competitions.

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

™

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

WIRING

Disconnect battery ground cable before making any power connections.

RED WIRE: +12 volts. Connect directly to battery positive terminal and should be

fused within 18 inches from the battery and another fuse where the connection to

the amplifier is made. Remember to use the proper size fuses. The Model

502HV©uses a SC60 fuse. This may appear to be a small fuse size, but the

Bussman SC series fuse is a fiberglass cased, silica (sand) filled ¼ diameter

fuse able to take many times its rating for peak current demands over several

seconds without blowing, but is still able to protect the amp from sustained

current draws in excess of its rating.

WARNING: USING OVERSIZED FUSES IS DANGEROUS AND WILL

DAMAGE YOUR AMPLIFIER!

BLACK WIRE: Negative Ground. Connect to clean unpainted metal surface on

char chassis.

RED/WHITE WIRE: Remote turn on lead requires 12 volts; connect to power

antenna lead from radio. When this is not available, you may connect to a +12

volts wire that is on with the ignition on or in the accessory position.

RCA CONNECTIONS: Connect with quality-shielded patch cords from source,

crossover, or any other sound processor.

SPEAKER CONNECTIONS: Connect speaker terminals to amplifier, facing the

terminal, left to right, Left (-), Left (+), Right (-), and Right (+). For mono

operation use left positive (+) and right negative (-). These amplifiers are

capable of 2-ohm operation in stereo or 4 ohm in mono.

OPERATING THE AMPLIFIER AT LESS THAN THESE RATINGS WILL

CAUSE AMPLIFIER FAILURE AND VOID YOUR WARRANTY.

NOTE: The 502HV©has internal taps for 2-ohm operation. To access, remove

bottom cover. They are located about the middle of the amplifier and are set to 4

ohms at the factory. To change to 2-ohm operation, pull the quick disconnects off

the taps marked “4” and place them on the taps marked “2”. This will ensure safe

operation into 2-ohm stereo loads, as well as, 4-ohm bridged loads.

502HV©BASS BOOST: This switch is accessible through a plug on the bottom

of the amplifier. In the on position it redistributes power in the bass region to help

overcome factors in the mobile environment that limit bass response. This "bass

boost" is a carefully measured EQ curve to enhance performance if needed. The

boost occurs at 45 Hz.

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

OPERATION / ADJUSTMENT

The output of most any car audio equipment will follow a common distortion

curve. This curve will show that the distortion is at its lowest level right before it

reaches full rated output. After that point, the distortion increases rapidly to

unusable levels.

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

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

same point on the curve at the same time.

In a basic system, using a single amplifier, set the amp gain to minimum, turn the

deck up until it just starts to distort, then back the deck down slightly. This is the

point where the output of the deck is cleanest. Now, bring the gain of the amp up

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

reach maximum useable output at the same time.

WARNING

Your new LINEAR POWER™ 502HV©amplifier, when used in conjunction with

many of the efficient speaker systems on the market today, can produce sound

pressure levels that are considered harmful to your hearing.

Exposure to loud music may lead to loss in hearing. This effect may not be

readily appreciated because the damage to hearing is progressive. Those who

are exposed to excessive sound pressure should utilize direct individual

protection in the form of earplugs or earmuffs, which are specifically designed for

noise reduction.

In accordance with the OSHA (Occupational Safety and Health Act) regulations

for noise levels as they relate to the work area, excessive sound pressure is

defined as 115db(a) continuous for any length of time.

We recommend that you exercise restraint while enjoying the performance of this

and other high-powered mobile audio equipment.

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.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

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

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

insulation and vibration isolation.

GENERAL TROUBLESHOOTING

NO SOUND: Check all connections. Check fuses. With a meter be sure there is

+12 Volts on the main power wire and the turn on wire, but not on the ground

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

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

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

SHUTS OFF: This amplifier is equipped with a thermal and short circuit

protection. In the unlikely event of excessive temperature or improper speaker

impedances, the amp will turn itself off. When the condition is corrected

(temperature decreases or speaker short is fixed), the amp will turn itself back

on. To avoid damage to the speakers, turn volume to a minimum while waiting for

the amp to turn itself back on.

SERVICE OR REPAIR

To obtain service or repair, please contact our authorized LINEAR POWER

product service center:

T.I.P.S. INC.

3599 Old Brandon Road

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

502HV©

Power Output @ 4 Ohms 250 x 2

THD @ full output 20 - 20Khz .02%

Slew Rate (volt/microsecond) 16V/ms

Damping Factor @ 4 ohms/@ 2 ohms 210 / 105

Headroom 3 dB

Maximum current

4 ohms 70A

2 ohms 90A

Idle 2A

Fuse rating (SC60 AMP slow blow fuse) 60A

Dimensions 3.0"x 9.5"x14.5"

™

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

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