JBL PSWD-110 Service manual

PSW-D110/DPS-10

Powered Subwoofer

SERVICE MANUAL

JBL Consumer Products Inc. 250 Crossways Park Drive Woodbury, N.Y. 11797 1-800-336-4JBL in the USA

A Harman International Company

Rev C 8/2000

Amplifier/Subwoofer PSW-D110/DPS-10

SAFETY INFORMATION

Warning

Any person performing service of this unit will be exposed to hazardous voltages and the risk of electric shock. It is assumed that any person who removes the amplifier from this cabinet has been properly trained in protecting against avoidable injury and shock. Therefore, any service procedures are to be performed by qualified service personal ONLY!

Caution

This unit does not have a power switch. Hazardous voltages are present within the unit whenever it is plugged in.

Before the amplifier is plugged in, be sure its rated voltage corresponds to the voltage of the AC power source to be used. Incorrect voltage could cause damage to the amplifier when the AC power cord is plugged in. Do not exceed rated voltage by more than 10%: operation below 90% of rated voltage will cause poor performance or may shut the unit off.

Leakage/Resistance Check

Before returning the unit to the customer, perform a leakage or resistance test as follows:

Leakage Current. Note there is no power switch on this unit. When the power plug is plugged in, the unit is live. Connect the unit to its rated power source. Using an ammeter, measure the current between the neutral side of the AC supply and chassis ground of the unit under test. if leakage current exceeds 0.5mA, the unit is defective. Reverse the polarity of the AC supply and repeat.

Resistance. Measure the resistance from either side of the line cord to chassis ground. If it is less than 500k ohms, the unit is defective.

WARNING! DO NOT return the unit to the customer if it fails one of these tests until the problem is located and corrected.

Critical Components

All components identified with the IEC symbol in the parts list and the schematic diagram designate components in which safety can be of special significance when replacing a

component identified with . Use only the replacement parts designated in the parts list or parts with the same rating of resistance, wattage or voltage.

List of Safety Components Requiring Exact Replacements

F1 Fuse SLO BLO 1.25A 250V UL approved

PWRCORD SPT-2 or better with polarized plug, UL

approved wired with the hot side to fused side. Use with factory replacement panel strain relief only.

TRX1 Transformer. Use only factory replacement.

DBR Bridge diode. Use only factory replacement.

C1, 2 4700uF, 50V electrolytic filter caps. Be sure

replacement part is at least the same working voltage and capacitance rating. Also the lead spacing is important. Incorrect spacing may cause premature failure due to internal cabinet pressure and vibration.

C6 10uF 50V electrolytic radial

See Page 14 Service Bulletin

S52AMI Power output module. Use only factory

replacement

Faceplate Faceplate. Use only factory replacement

Air leak cover Use only factory replacement

CMC1 Use only factory replacement

L1 Use only factory replacement

Fuse PCB Use only factory replacement

Main PCB Use only factory replacement

Amplifier/Subwoofer PSW-D110/DPS-10

TABLE OF CONTENTS

SAFETY INFORMATION ...............................................2

TABLE OF CONTENTS .................................................3

GENERAL SPECIFICATIONS .......................................3

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

PSW-D110/DPS-10 CONTROLS AND

THEIR FUNCTION.........................................................6

OPERATION...................................................................7

SPEAKER CONNECTIONS...........................................8

TROUBLESHOOTING ...................................................9

PSW-D110/DPS-10 TEST SET UP

AND PROCEDURE......................................................10

PSW-D110/DPS-10 POWER AMP

TEST PROCEDURE and FLOW CHART....................11

SERVICE BULLETIN JBL9902 REV1 - MAY 1999 ..........14

SERVICE BULLETIN JBL9903 - APRIL 1999 ..................15

SERVICE BULLETIN JBL2000-01 - JANUARY 2000.......16

CABINET EXPLODED VIEWS ....................................17

AMPLIFIER EXPLODED VIEW ...................................18

PSW-D110/DPS-10 MECHANICAL PARTS LIST.......19

PACKING EXPLODED VIEWS....................................20

PSW-D110/DPS-10 Version 3.53 PCB

(Component Side) ........................................................21

PSW-D110/DPS-10 Version 3.53 PCB

(Solder Side) ................................................................22

PSW-D110/DPS-10 Version 3.93 PCB

(Component Side) ........................................................23

PSW-D110/DPS-10 Version 3.93 PCB

(Solder Side) ................................................................24

PSW-D110/DPS-10 ELECTRICAL PARTS LIST ........25

PSW-D110/DPS-10 INTEGRATED CIRCUITS ...........26

PWS-D110/DPS-10 SCHEMATIC 1 of 2.....................27

PWS-D110/DPS-10 SCHEMATIC 2 of 2.....................28

GENERAL SPECIFICATIONS

Amplifier Power (RMS) ........150watts

Driver 10" .............High-Polymer Laminate

Inputs ...............Line Level and Speaker Level

Outputs ..............Line Level and Speaker Level

Low-Pass Frequency ........Continuously variable from 60Hz – 180Hz

High-Pass Frequency ........Continuously variable from 60Hz – 180Hz

when using line-level inputs 180Hz when using speaker-level inputs

Frequency Response ........30Hz – low-pass crossover setting

PSW-D110 DPS10

Dimensions (HxWxD).......15-3/8 x 15-3/8 x 17" 18-1/16 x 14-7/8 x 15-7/8"

(391 x 391 x 432mm) (459 x 378 x 403mm)

Weight ...............33lbs/15 kg 30 lbs/13.6 kg

Amplifier/Subwoofer PSW-D110/DPS-10

DETAILED SPECIFICATIONS

LINE VOLTAGE

US 120vac/60Hz

EU 230vac/50-60Hz

Parameter Specification Unit Conditions Notes

Amp Section

Type (Class AB, D, other)

Load Impedance (speaker)

Rated Output Power

Yes/No

Yes

150

THD@ Rated Power

THD @ 1 Watt

DC Offset

Damping factor

Input Sensitivity

Input Frequency

Line Input

Speaker/Hi Level Input

0.1

>200

110

2.7

Hi/Lo Line Unit Notes

108-132 Vrms Normal Operation

207-264 Vrms Normal operation, MOMS required

Class D Preferred...Sink required for Class AB

Ohms Nominal Z-curve required

Watts 1 input driven Peak power

Watts 1 input driven RMS

% 22k filter 75w (Power Bandwidth 30-100Hz)

% 22k filter

mV-DC @ Speaker Outputs

Hz Nominal Freq. 1 input driven

mVrms To Rated Power/ Vol @ Max 1 input driven

Vrms To Rated Power/ Vol @ Max 1 input driven: AP sourceZ=25ohms

Signal to Noise

SNR-A-Weighted

SNR-unweighted

SNR rel. 1W-unweighted

Residual Noise Floor

Input Impedance

Line Input

Speaker/Hi Level Input

Filters 0dBr = 1w @ 50Hz

Low Pass (fixed or variable)

Low Pass filter (point or range)

Slope

Subsonic filter (HPF)

Slope

100

1.5

10k

200

Variable

60-120

dBA

dBr relative to 75w power 22k filter

dBr relative to 1W Output 22k filter

mVrms Volume @max, using RMS reading DMM/VOM (or A/P)

mVrms(max) Volume @max, w/ A/P Swept Bandpass Measurement (Line freq.+ harmonics)

ohms Nominal

Hz -3dB Point

dB/Octave

Damping

Hz -3dB Point

dB/Octave

Damping

relative to 75w power

A-Weighting filter

Amplifier/Subwoofer PSW-D110/DPS-10

Limiter (yes/no)

THD at Max. Output Power

Features

Phase Switch (yes/no)

Volume pot Taper (lin/log)

Input Configuration —

Line In (L,C,R,AC3,Mono)

Line Outputs (L,C,R)

Line-Out Adj. X-over

Spkr/Hi Level In (L,C,R,mono)

Spkr Out: Hi Pass Filter

Signal-Present LED Bi-Color LED (green=signal/ red=no signal)

Signal-Present Input Freq.

Signal-Present Level

Signal-Present Bandwidth

Signal-Present Turn-on time

Auto Mute/ Turn-OFF Time

Yes

yes

linear

L,R

130-240

L,R

100

% Maximum Output Power Maximum THD as a result of limiting.

—

— Buffered Output / Pre-Volume control

—

Hz Nominal 200uF Series Cap on PCB

sec. Amp connected and AC on, then input signal applied

min.

Enabled w/Line/Spkr Input Select Switch

Var-HPF (Pot CCW and CW positions)

Enabled w/Line/Spkr Input Select Switch

8 ohm Satellite: 6dB/oct passive xover

100Hz into Line Input w/ 1 ch. driven

Signal-Present-LPF for noise immunity

T before muting, after signal is removed

Rear panel Variable xover

Driven from zero ohms source impedance

Power on Delay time

Transients/Pops

Signal-Present Transient

Turn-on Transient

Turn-off Transient

Efficiency

Stand-by Input Power

AC Power Cons.@1W

Power Cons.@rated power

Efficiency

Protection

Short Circuit Protection yes Direct short at output

Line Fuse Rating 1.25 Amps Type-T or Slo Blo

500

107

70.09%

sec. AC Power Applied

mV-peak @ Speaker Outputs

mV-peak @ Speaker Outputs AC Line cycled from OFF to ON

mV-peak @ Speaker Outputs AC Line cycled from ON to OFF

Watts @ nom. line voltage

% Relative to 75w output

Amplifier/Subwoofer PSW-D110/DPS-10

PSW-D110/DPS-10 CONTROLS AND THEIR FUNCTION

1. Power - (PSW-D110 ONLY) This light will be RED

when the unit is plugged in and not receiving a signal; when the PSW-D110 receives a signal, the light will cycle to GREEN. If no signal is received after 10 – 15 minutes the light will cycle back to RED (standby) until a signal is present again.

2. Level Control - The subwoofer Level Control, (PSW-D110, located on the front panel, DPS-10, on the rear panel) adjusts the volume of the subwoofer relative to the rest of the system.

3. High Pass Control - Controls the the roll-off point of the highest frequency the subwoofer will produce.

4. Phase Switch - Changes the subwoofer's output to be in phase or 180 degrees out of phase with the program material.

5. Low Pass Control - Controls the roll-off point of the lowest frequency produced at the High Pass Output Jacks.

6. High Pass Output - When using the Line-Level Input jacks, these are connected to an external power amplifier or receiver to power the main loudspeakers with a high pass filter if desired.

Front Panel ( only)PSW-D110

min

max

Rear Panel

120

High Pass

150

180

7. Line Input - Main Input connection to subwoofer (preferred).

8. Speaker In Jacks - Main Input connection to subwoofer when line level, subwoofer, or pre-amp output connectors are not availible, or when a high pass filter (set at 180Hz) to main loudspeakers is desired through the Speaker Output Jacks.

9. Speaker Out Jacks - Connected to main loudspeakers when the Speaker Input Jacks are used.

Line

Phase

Low Pass

High Pass Output

Input

SPKR

180o0

120

150

180

SPKR OUT

Amplifier/Subwoofer PSW-D110/DPS-10

OPERATION

Crossover Adjustments

High-Pass Control

• This control is only active if you are using the hook-up method described in detail on page 8, Figure 3. The High-Pass control determines the frequency at which the main speakers will start reproducing sounds. If your main speakers can comfortably reproduce some low-frequency sounds, also set this control to a lower frequency setting, between 50Hz – 100Hz. This will concentrate the subwoofer’s efforts to the ultradeep bass sounds, while your main speakers continue to reproduce the mid-bass information. If you are using smaller bookshelf speakers that do not extend to the lower bass frequencies, set the high-pass crossover control to a higher setting, between 125Hz – 180Hz. With this setting, your main speakers will not have the burden of reproducing any low-frequency sounds.

Final adjustment and blending of the low-pass and high-pass controls may evolve over several listening sessions. A good starting point would be to set both the lowand high-pass controls to the same frequency and adjust from that point.

Low-Pass Control

The Low-Pass 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 – 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 low-pass crossover control to a higher setting, between 120Hz – 180Hz.

Phase

Phase Control

The Phase Control determines whether the subwoofer speaker’s piston-like action moves in and out with the main

speakers, 0° , or opposite the main speakers, 180° . There is

no correct or incorrect setting. Proper phase adjustment depends on several variables such as room size, subwoofer placement and listener position. Adjust the phase switch to maximize bass output at the listening position.

Remember, every system, room and listener is different. There are no right or wrong settings; any setting you choose will result in excellent performance. Should you decide to fine-tune your system for optimum performance, be patient and trust your ears. It will be worth the effort involved to fully “tweak” your system.

Amplifier/Subwoofer PSW-D110/DPS-10

SPEAKER CONNECTIONS

NOTE: The rear plate for the PSW-D110 is shown, which has the level control on the front panel. The DPS-10 has this level control on the rear panel (amplifier)

Figure 1

Power

120

High Pass

Phase

Low Pass

High Pass Output

Line

Input

RECEIVER/AMPLIFIER

SPEAKER OUTPUT

RIGHT

LEFT

SPKR

1) If your receiver/amplifier has no subwoofer outputs or preamp outputs for the left and right channels. See Figure 1.

150

180

180o0

120

150

180

SPKR OUT

RIGHT SPEAKER

LEFT SPEAKER

2) If your receiver/amplifier has subwoofer outputs or preamp output jacks for the left and right channels. See Figure 2.

Note: Some receivers/amplifiers have a single (mono) subwoofer output. In this case, it is recommended that you use a “Y”-connector (not included) to maximize the subwoofer’s performance.

Power

Line

High Pass

Phase

Low Pass

High Pass Output

Input

120

150

180

180o0

120

150

180

Figure 3

RECEIVER/AMPLIFIER

PRE

MAIN

OUT

LEFT

RIGHT

MAIN SPEAKER OUTPUT

RIGHT

LEFT

Line

Power

120

High Pass

Phase

Low Pass

High Pass Output

Input

180o0

120

SPKR

180

150

SPKR OUT

Figure 2

RECEIVER/AMPLIFIER

SUBWOOFER OUT

LEFT

MAIN SPEAKER OUTPUT

RIGHT

LOUDSPEAKER

RIGHT

LEFT

SPKR

SPKR OUT

RIGHT

LOUDSPEAKER

LEFT

LOUDSPEAKER

3) If your receiver/amplifier has preamp output jacks and main input jacks for the left and right channels or you have a separate pre-amp/ processor and power amplifier. See Figure 3.

This method of hookup can offer the highest level of performance for your complete loudspeaker system. The PSW-D110/DPS-10 incorporates a variable high-pass crossover in addition to a variable low-pass crossover. When hooked up as shown above, the subwoofer will limit the low-frequency information that is returned to your receiver/amplifier. Your receiver/amplifier does not need to waste valuable power reproducing the low frequencies. In addition, since no low-frequency information is being sent to your main loudspeakers, they are able to reproduce mid and high frequencies with greater clarity

Amplifier/Subwoofer PSW-D110/DPS-10

TROUBLESHOOTING

If you used the high-level (speaker) inputs and there is no sound from any of the speakers, check the following:

• Receiver/amplifier is on and a source is playing.

• Powered subwoofer is plugged in.

• Check all wires and connections between

receiver/amplifier and speakers. Make sure all wires are connected. Make sure none of the speaker wires are frayed, cut or punctured.

• Review proper operation of your receiver/amplifier. If there is low bass output, check the following:

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

• Make sure that the sub-woofer is plugged into an active electrical outlet.

• Powered subwoofer is plugged in.

• Adjust the crossover point.

If you used the line-level inputs and there is no sound from the subwoofer, check the following:

• Receiver/amplifier is on and a source is playing.

• Powered subwoofer is plugged in.

• Check all wires and connections between receiver/

amplifier and subwoofer. Make sure all wires are connected. Make sure none of the wires are frayed, cut or punctured.

• Review proper operation of your receiver/amplifier.

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