Table Of Contents; Specifications; Cautions And Warnings; Table Of Contents - Infinity HPS250 Technical Manual

Powered Subwoofer
SPECIFICATIONS..........................................................1
CAUTIONS AND WARNINGS .......................................1
TABLE OF CONTENTS.................................................1
CONTROLS AND THEIR FUNCTION...........................2
HPS-250 BLOCK DIAGRAM .........................................3
HPS-250 CABINET EXPLODED VIEW.........................4
DISASSEMBLY PROCEDURES ...................................5
TEST PROCEDURE 1...................................................5
TEST PROCEDURE 2...................................................6
HPS-250 ELECTRICAL PART LISTS ...........................7
HPS-250 PACKAGING EXPLODED VIEW.................11
BEFORE THIS AMPLIFIER IS PLUGGED IN, make sure its rated voltage corresponds to the voltage of the AC
power source to be employed. Failure to use the correct voltage could cause damage to the amplifier when the AC
power cable is plugged in. Do not exceed the rated voltage by more than 10%; operation below 90% will degrade
performance or cause the unit to shut off.
WHEN SERVICING THIS AMPLIFIER:
1. Do not touch the metal frame of the woofer (if removed from the cabinet) when driving the amplifier at high
power levels. In the unlikely event that the output devices in the amplifier fail and present an open circuit during
their operation, AND the driver voice coil was to come in contact with the motor assembly, hazardous voltage could
be present at the woofer frame.
2. When 120/230v-based test equipment is connected to the amplifier in any way, use of a 1000W isolation
transformer (Stancor model GIS-1000 or similar) on the subwoofer is necessary for safety; in addition, an isolator
plug, (a three-to-one pin adapter sometimes called a "cheater plug") should be used on the power cord plug of the
test equipment being used.
Output Power .
Frequency Response
Crossover Frequency .
Phase . .
Driver . .
Inputs . .
Outputs . .
Dimensions
Inches . .
Metric . .
* High-Level (speaker) outputs are active only if high-level input is used.
Occasional refinements may be made to existing products without notice, but will always meet or exceed
original specifications unless otherwise stated.

TABLE OF CONTENTS

CAUTIONS AND WARNINGS

SPECIFICATIONS

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INTEGRATED CIRCUIT DIAGRAMS ..........................12
PCB - POWER SUPPLY .............................................13
PCB - MAIN BOARD ...................................................14
PCBs - AC POWER, SHIELD/LED, H/I SHIELD ........15
LINE FILTER, LOW LEVEL INPUT,............................16
SHIELD/LED BOARD SCHEMATICS
MAIN BOARD SCHEMATIC 1 of 3 .............................17
pages 17-19
POWER SUPPLY SCHEMATIC 1 of 2 .......................20
POWER SUPPLY SCHEMATIC 2 of 2 .......................21
HIGH LEVEL INPUT SCHEMATIC .............................22
. . . . . 250 Watts (RMS)
. . . . . 28 - 120 Hz
. . . . . 50 - 150 Hz (Continuously Variable)
. . . . . 0 or 180 degrees
. . . . . 12" Woofer - ( 21 Ohm DCR)
. . . . . Line Level and Speaker Level
. . . . . Full Range Speaker
. . . . . 18 x 15 x 18" (H x W x D)
. . . . . 457 x 381 x 457mm
HPS-250
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