JBL 1500, Project Array 1500 Service Manual

Project Array™

1500 Array

Subwoofer

Service Manual

JBL Consumer Products 250 Crossways Park Dr.

Woodbury, New York 11797 Rev0 4/2006

1500 Array Subwoofer

- CONTENTS -

BASIC SPECIFICATIONS ……………. ……..…………..1

PACKING……..……......................................................2

DETAILED SPECIFICATIONS ……….……..…………..3 CONNECTIONS………………………...……..…...…..…5 OPERATION ……..………………….……...…….….…...6 BASIC TROUBLESHOOTING……………………………7

EXPLODED VIEW/PARTS LIST…….….….…………....8

TEST SET-UP AND PROCEDURE….………………….9 BLOCK DIAGRAM….…………………………………….10 ELECTRICAL PARTS LIST……………………………..11

P.C.B. DRAWINGS….……………...........................….16

IC/ T R ANS I S T O R PIN O U T S ..……..….…….….….….….22 SCHEMATICS…………………….………………………23

1500 ARRAY SPECIFICATIONS

General

Output 1000W Low-Frequency Transducer W1500H 15" Pulp-cone driver Frequency Response (-3dB) 25Hz – 400Hz, variable Crossover Frequencies 40Hz-140Hz HP Port 4" Flared Dimensions (H x W x D) 23" x 19 -1/2" x 19" (584mm x 495mm x 483mm)

21" (53 3mm) Deep with grille

Weight 125 lb (57kg)

JBL continually striv es to update and improve existi ng pr oduc ts, as well as create new ones. The specifications and details in this and related JB L publications are therefore subject to c hange without notice.

Ref# Part Number Description Qty

1 361041-002 1500 Array Owner’s Manual 1 2 331994-001 JBL Warranty Card 1 3 361408-001 1500 Array Outer Carton 1 4 354374-001 Packing Foam (Top) 1 5 354374-001 Packing Foam (Bottom) 1 6 340805-006 (Plate) Feet 4

1500 Array Subwoofer

1500 Array Powered Sub/ Plate Amp

LINE VOLTAGE Yes/No Hi/Lo Line Nom. Unit Notes

Parameter Specification Unit Amp Section

Type (Class AB, D, other) D n/a Load Impedance (speaker) 8 Ohms Rated Output Power 650 Watts THD @ Rated Power 0.5 % THD @ 1 Watt 0.1 %

Dynamic Power 700 Watts DC Offset 20 mV-DC

Damping factor >20 DF

Input Sensitivity

Input Frequency 100 Hz

Line level input

Signal to Noise

SNR-A-Weighted 100 dBA SNR-unweighted 95 dBr SNR rel. 1W-unweighted 70 dBr

Residual Noise Floor 0.5 mVrms

Residual Noise Floor 0.5 mVrms(max)

US 120VAC/60Hz YES 108-132 120 Vrms Normal Operation

EU 230VAC/50-60Hz YES 207-264 230 Vrms Normal operation, MOMS required

Asia 100VAC/50Hz YES 90-110 100 Vrms Normal operation, MOMS required

QA Test

Limits Conditions Notes

Bridge type amplifier, None of the speaker terminals must be connected to system GND at any time.

Test frequency 100 Hz

3/20 Cycles @ 50 Hz, burst test into 8 Ohms, input driven with 800mV RMS

Measured at the speaker cable. 500 Watts, measured at speaker output terminals located at the amp board.

Single input driven, Ap Zo=600 Ohms, LFE mode, Volume ctrl. at max.

11.69 mVrms

n/a n/a

Nominal

593

1 input driven

22K filter

0.2

22K filter

Power is the average measurement of the first four consecutive peaks of

690

the burst signal

100

@ Speaker Outputs

Measured at amplifier board

100

Nominal Freq.

±2dB

To 1 Watt

Relative to rated power (650 Watts) A-Weighting filter

Relative to rated power (650 Watts) 22K filter

Relative to 1W Output 22K filter Volume @max, LFE Mode, using

RMS reading DMM/VOM (or A/P) Volume @max, LFE Mode, w/ A/P

Swept Bandpass Measurement

(Line freq.+ harmonics)

Input Impedance

Filters

LP 4th order variable 40-140 Hz Subsonic filter (HPF) 3rd Ord LFE Mode Fixed Hz

Features

Line Level output YES Volume pot Taper (lin/log) LOG --

Variable crossover 40-140 Hz YES LP Selector switch LFENormal Phase switch YES -Auto- On-Off selector YES

Input Configuration

Single Line input

Line output configuration

Single Line level output YES

Signal Sensing (ATO)

Auto-Turn-On (yes/no) YES ATO Input test frequency 50 Hz ATO Level, Line Input 2.5 mV

ATO Turn-on time 2 seconds

Auto Mute/ Turn-OFF Time 15 minutes

Line Input 10K ohms

Fixed Hz

YES

YES --

n/a

Nominal

± 10 ± 10 ± 10 LP Mode switch at LFE

functional functional

functional

functional Pass through from the speaker input section functional Disables LP filter, intended for LFE functional Switch located at the back panel

functional Single RCA jack (BLK Color)

Functional

functional functional functional

functional

Gain=0dB respect to line level input, Zo=600 Ohms

Auto - on selection switch in Auto

Amp connected and AC on, then input signal applied (T) Time before muting, after input

signal is removed

" "

RCA Line buffered line level output A Taper 4th Order LP Filter, 2nd order fix and 2nd order variable.

Single RCA jack (BLK Color)

Auto turn of time (T) must be 10 > T < 17 Minutes

Power on Delay time

ATO mode 4 sec. ON mode 2 sec.

5 2

After applying the minimum ATO voltage (2mVRMS) After turning the stand-by knob to ON position

Temperature rise in accessible metal parts should

1500 Array Subwoofer

Parameter Specification Unit

Transients/Pops

ATO Transient 5 mV-peak Turn-on Transient 50 mV-peak Turn-off Transient 50 mV-peak

Efficiency

Efficiency 73 %

Stand-by Input Power 2

Stand-by Input Power 10 Watts Power Cons. @ 500W 678 Watts

Protection

Thermal Protection YES DC Offset Protection YES Line Fuse Rating Japan 100V & USA- Versions 6.3 Amps Type-T or Slo Blo-250 V UL, PSE Approved Europe 220-240V 3.15 Amps Type-T, Low breaking capacity-250

QA Test

Limits Conditions Notes

n/a 1V-pk-pk 1V-pk-pk

functional

@ Speaker Output @ Speaker Output AC Line cycled from OFF to ON @ Speaker Output AC Line cycled from ON to OFF

500W of output power into rated

impedance @ nominal line voltage, Amp in

OFF state, RED LED activated

@ nom. line voltage, Amp in On

state, Green LED activated

714

@ nom. line voltage

@1/8 max unclipped Power

DC present at Speaker Out leads Relay opens during a DC output condition

Nominal Line voltage Maximum allowable input power LED in RED, Class D inactive

Maximum allowable input power under nominal Input voltage and frequency, in stand-by mode (HOT or COLD operation, LED GREEN). Class D active but no stimulus signal applied. 500 Watts into rated impedance 8 Ohms

not exceed 35K rise for domestic version or 30K rise for European versions (refer to requirements sheet). Unit is protected for over-temperature conditions

SEMKO Approved

SPEAKER CONNECTIONS

SSuubbwwooooffeerr CCoonnttrroollss aanndd CCoonnnneeccttiioonnss ((11550000 AArrrraayy OOnnllyy))

567

The 1500 Array includes a line output. This output allows you to “daisy chain” one 1500 Array to multiple 1500 Array subwoofers. Simply connect the first subwoofer as described above and then run a subwoofer cable from the line output(s) to the line input on the next sub.

¡ Line-Level Input ™ Line-Level Output £ Power Indicator ¢ Subwoofer Level (Volume) Control ∞ Crossover Adjustment

§ Phase Switch ¶ LP/LFE Selector

• On/Off Auto Switch ª Power Switch

Connection: If you have a Dolby

Digital or DTS

receiver/processor with a low-frequencyeffects (LFE) output, set LFE/LP switch to LFE. If you prefer to use the crossover built into the 1500 Array, set the LFE/LP Switch ¶ to LP.

SUBWOOFER OR LFE OUTPUT

1500 Array Subwoofer

Power On

Plug your subwoofer’s AC cord into a wall outlet. Do not use the outlets on the back of the receiver.

Initially set the Subwoofer Level (Volume) Control

¢ to

the “min” position. Turn on your sub by pressing

the Power Switch ª on the rear panel.

Auto On/Standby

With the Power Switch ª in the “on” position, the Power Indicator LED £ will remain backlit in red or green to indicate the On/Standby mode of the subwoofer.

RED = STANDBY (No signal detected, Amp Off)

GREEN = ON (Signal detected, Amp On)

The subwoofer will automatically enter the Standby mode after approximately 10 minutes when no signal is detected from your system. The subwoofer will then power ON instantly when a signal is detected. During periods of normal use, the Power Switch ª can be left on. You may turn off the Power Switch ª for extended periods of nonoperation, e.g., when you are away on vacation.

If the Auto Switch

• is in the “on” position, the subwoofer will remain on.

Adjust Level

Turn on your entire audio system and start a CD or movie soundtrack at a moderate level. Turn up the Subwoofer Level (Volume) Control ¢ about halfway. If no sound emanates from the subwoofer, check the AC-line cord and input cables. Are the connectors on the cables making proper contact? Is the AC

plug connected to a “live” receptacle? Has the Power Switch

ª been pressed to the “on” position? Once you have confirmed that the subwoofer is active, proceed by playing a CD or movie. Use a selection that has ample bass information.

Set the overall volume control of the preamplifier or stereo to a

comfortable level. Adjust the Subwoofer Level (Volume) Control

¢ until you obtain a pleasing blend of bass. Bass response should not overpower the room but rather should be adjusted so there is a harmonious blend across the entire musical range. Many users have a tendency to set the subwoofer volume too loud, adhering to the belief that a subwoofer is there to produce lots of bass. This is not entirely true. A subwoofer is there to enhance bass, extending the response of the entire system so the bass can be felt as well as heard. However, overall balance must be maintained or the music will not sound natural. An experienced listener will set the volume of the subwoofer so its impact on bass response is always there but never obtrusive.

Crossover Adjustments

NOTE: This control will have no effect if the LP/LFE Selector Switch ¶ is set to “LFE.” If you have a Dolby Digital or DTS processor/receiver, the Crossover Frequency is set by the processor/receiver. Consult your owner’s manual to learn how to view or change this setting.

The Crossover Adjustment Control

∞ determines the highest frequency at which the subwoofer reproduces sounds.

If your main speakers can comfortably reproduce some low-frequency sounds, set this control to a lower frequency setting, between 50Hz and 100Hz. This will concentrate the subwoofer’s efforts on the ultradeep bass sounds required by today’s films and music. If you are using smaller bookshelf speakers that do not extend to the lower bass frequencies, set the Crossover Adjustment Control to a higher setting, between 120Hz and 150Hz.

Phase Control

The Phase Switch § deter- mines whether the subwoofer speaker’s pistonlike action moves in and out with the main speakers (0˚) or opposite the main speakers (180˚). Proper phase adjustment depends on several variables, such as subwoofer placement and listener position. Adjust the Phase Switch to maximize bass output at the listening position.

1500 ARRAY OPERATION

1500 Array Subwoofer

BASIC TROUBLESHOOTING

If there is low (or no) bass output

• Make sure the connections to the left and right “Speaker Inputs” have the correct polarity (+ and –).

• Make sure the subwoofer is plugged into an active electrical outlet.

• Make sure the Power Switch is on.

• In Dolby Digital or DTS modes, make sure your

receiver/processor is configured so that the subwoofer and LFE output are enabled.

• Adjust the Subwoofer Level Control

1500 ARRAY MECHANICAL PARTS LIST

Item # Description Part Number Qty

1 CABINET ASSEMBLY-1500 ARRAY Not for Sale 1 2 15" WOOFER-W1500H 353721-001 1 3 AMPLIFIER ASSEMBLY,120V-ARRAY Not for Sale 1 4 POWER TRANSFORMER-1500 ARRAY BG 361407-001 1 5 PORT TUBE -1500 ARRAY 360806-001 1 6 CARBOARD TUBE,4 1/4x4x1/8x6-4338 47909-68 1 7 FOOT,NUT,INSERT,BLK 340805-004 4 8 FOOT,SPIKE,BLK 340805-005 4

9 GRILLE,FRONT, 1500 ARRAY 354507-001 1 10 WOOFER SCREW,10-32 X 1,FIL,PH,BLK ZINC,LCS 804-01110-16 8 11 AMPLIFIER SCREW,8 X 1,PAN,PH,PB,BLK ZINC,LCS 883-41110-16 10 12 GASKET,DRVR,15" 338073-001 1 13 LOGO-JBL 360813-001 1

1500 ARRAY SUB EXPLODED VIEW

X RAY VIEW FOR ILLUSTRATIVE PURPOSES ONLY

DAMPING MATERIAL NOT SHOWN

1500 Array Subwoofer

+ 19 hidden pages

JBL 1500, Project Array 1500 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual