Infinity ENTRA Manuale utente

ENTRA

ENTRA POINT FIVE HTS

POWERED SUBWOOFER

SERVICE MANUAL

Infinity Systems, Inc.

250 Crossways Park Dr.

Woodbury,NewYork11797 Rev212/2002

TABLE OF CONTENTS

SPECIFICATIONS . . . . . . . . . .. . . . . . . . . . . . ... . . . . . . . . . .3

DETAILED SPECIFICATIONS . . . ... . . . . . . …….…… . . . . .4

CONTROLS and CONNECTIONS . . . .. . . . . . . . . .. . . . . . . .5

OPERATION . . . . . . . . . . . .. . . . . . . . . . . . . . . …... .. . . . . . .7

MECHANICAL/PACKAGING PARTS LIST . .. . . . . . . . . . . . .8

EXPLODED VIEW . . . .. . . . . . . . . . . . . . . . …………. . . . . . .9

PACKAGING . . . . . . . .. . . . . . . . . . . . . . . ……………. . . . . .10

TEST SETUP AND PROCEDURES . . . .. . . . . . . . . . . . . . . .11

ELECTRICAL PARTS LIST . . . . . . . .. . . . . . . . . . . . . . . . . . .12

INTEGRATED CIRCUIT DIAGRAMS . . . . . . . . ……... . ….. .17

BLOCK DIAGRAM . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . .19

PCB DRAWINGS. . . .. . . . . . . . . . . . . . . …………….. . . . ….20

SCHEMATICS . . . . . . . . . . . . . . . . . . . ……... . . . . . . . . . . . .23

Entra Subwoofer

Specifications

Frequency Response: 34Hz- 150Hz (±3dB)

Maximum Amplifier Power 150 watts*, RMS, 500 watts peak,

(20Hz - 150Hz with no more than 0.1%

THD)

Crossover Frequencies: 50Hz - 150Hz, 24dB/octave,

continuously variable

Driver: 10” (245mm) C.M.M.D. shielded

DCR = 3.3 ohms ±10%

Dimensions (H x W x D): 15" x 14-1/2" x 17"

(381mm x 368mm x 432mm)

Weight: 47 lb (21.4kg) Each

Infinity continually strives to update and improve existing products, as well as create new ones. The

specifications and construction details in this and related Infinity publications are therefore subject to

change without notice.

Detailed Specifications

Entra Subwoofer

Controls and Connections

Entra Subwoofer

Controls and Connections (Cont.)

Entra Subwoofer

Operation

Entra Subwoofer

MECHANICAL PARTS LIST

1 SCREW, (16), #8 x .75, BLK, PB TRPH 336806-001

AMPLIFIER NOT FOR SALE

2 WOOFER, 10” (254mm)C.M.M.D.

SHIELDED DCR = 3.3 ohms ±10% 336649-001

3 GRILLE CUP (6) 333249-001

4 SCREW, (6), #6 x .75, BLK, PB PPH 903401-012

5 GRILLE 336454-001

6 FRONT BAFFLE 336452-001

7 FOOT (4) 330163-001

8 PORT TUBE 336806-001

PACKAGING

9 OWNERS MANUAL 336422-002

10 WARRANTY CARD 335841-001

11 SURVEY CARD 335868-002

12 PAD, TOP, END (2) 336457-001

13 CARTON 336458-001

Mechanical/Packaging Parts List

Entra Subwoofer

AMPLIFIER

(NOT FOR SALE)

PRE AMP

PCB ASSEMBLY

MAIN AMP

ASSEMBLY

POWER SUPPLY

PCB ASSEMBLY

INFINITY

ENTRA SUBWOOFER

CABINET

(NOT FOR SALE)

00470

TO SERVICE THE ENTRA SUBWOOFER

1) Remove the grille.

2) Extract (6) rubber grille retainers as shown in the illustration above; this can be accomplished by

carefully pulling them out of the cavities with long-nosed pliers or similar tool.

3) Remove the (6) Phllips screws that are now exposed.

4) Remove the front baffle.

5) Remove the (6) screws that secure the driver.

6) To service the amplifier, remove the (10) Phillips screws at the rear of the enclosure, and pull

the amplifier out of the back. Remove the two Phillips screws as indicated in VIEW A to remove the rear cover.

VIEW A

REMOVE

THESE

SCREWS

INFINITY SYSTEMS INC. NORTHRIDGE, CA, USA

DIRECT

DIRECT INPUT BYPASSES FILTER

WARNING:TOREDUCETHERISKOFFIREORELECTRICSHOCK,DO

NOTEXPOSETHISAPPLIA NCETORAINORMOISTURE.

ATTENTION:POURÉVITERTOUT RISQUEDE FEUOUCHOC

ÉLECTRIQUE ,NEPASEXPOSERCETAPPAREILÀLA PLUIEOUÀ

L'HUMIDITÉ.

AM PLIFI ER MA DE IN CHINA

SERIALNO.

SPEAKER LEVEL

INPUT

OUTPUT

LEVEL

LINE

INPUT

WARNING:SHOCKHAZARD-DONOTOPE N

NOUSERSERVICEABLEPARTSINSIDE

AVIS:RISQUEDECHOCÉLECTRIQUE-

NEPASOUV RIR

1 20V ~ 60 Hz 3A

OFF

POW ER

FRE Q UENCY

CROSSOVER

MAXMIN 180°

0° 60

LEVEL PHASE

150

120

Exploded View

Entra Subwoofer

Packaging

00472

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