Harman Kardon HKTS-7 Service manual

5 (5)

harman/kardon

SUB-TS7

(HKTS 7 SUBWOOFER)

SERVICE MANUAL

harman/kardon, Inc.

 

250 Crossways Park Dr.

 

Woodbury, New York 11797

Rev1 6/2004

SUB-TS7

harman/kardon

CONTENTS

BASIC SPECIFICATIONS . . . . . . . . . . . .

……………………………………. . . . 1

DETAILED SPECIFICATIONS . . . . . . . . .

. . . . …. . . . . . . . . ………………….. 2

CONTROLS & CONNECTIONS………... . . . . . . . . . . . ………………. ……….. 4

SPEAKER CONNECTIONS……………………….………..……. . . .. . .. . . . . . .. 6

OPERATION……. . . . . .. . . . . . . . .. ………………………………………………..9

BASIC TROUBLESHOOTING GUIDE . . .

. . . . . ………………………………...10

UNIT EXPLODED VIEW. . . . …………… ……………. .. ………... . . .. .. .. . … . 11

AMPLIFIER EXPLODED VIEW. . . . ………………... . .. ………... . . .. . . .. . … . 12

TEST SET-UP AND PROCEDURE. . . . . .

. . ………………………….………...13

BLOCK DIAGRAM . . . . . . . . . . . . . .. . . .

. . . ……………… . . . . . . .. . . . . . .

14

PCB DRAWINGS. .. . . . . . . . . . . . . . .. . . . .

……… . …………. . . . . .. .. . . . . . 15

ELECTRICAL PARTS LIST …………. .... . .. . . . . ………….…….. . . .. .. . . . . 19

SEMICONDUCTOR PINOUTS . . . .. .. .. ..

. . . .. . ……………………..………. .23

SCHEMATIC DIAGRAMS . . . . . . . . .. .. .. ..

. . . .. . ……………………………. .24

PACKAGING. .. . . . . . . . . . . . . . .. . . . .............................................................

 

26

SPECIFICATIONS

Amplifier Power (RMS)

100 Watts

Driver

10" woofer, Bass Reflex Enclosure

Inputs

Stereo Line Level, dedicated Subwoofer (LFE)

 

and Speaker Level with gold-plated binding posts

Outputs

Speaker Level with gold-plated binding posts

Frequency Response

35Hz – 120Hz (Filter switch ON)

 

35Hz – 450Hz (Filter switch OFF)

Dimensions (H x W x D)

18-7/8" x 13-3/8" x 13-3/8"

 

479mm x 340mm x 340mm

Weight

33 lb/15kg

Occasional refinements may be made to existing products without notice but will always meet or exceed original specifications unless otherwise stated.

1

 

SUB-TS7

 

 

 

 

harman/kardon

 

SUB-TS7 100W Powered Sub/ Plate Amp

 

 

 

 

 

 

 

 

 

 

 

 

LINE VOLTAGE

Yes/No

Hi/Lo Line

Nom.

Unit

Notes

 

US 120vac/60Hz

Yes

108-132

120

Vrms

Normal Operation

 

 

 

 

 

 

 

 

Parameter

Nonimal

Unit

QA Test

Conditions

Notes

Specification

Limits

 

 

 

 

 

 

Amp Section

 

 

 

 

 

 

Type (Class AB, D, other)

AB

n/a

n/a

 

 

 

Load Impedance (speaker)

4

Ohms

n/a

Nominal

 

 

Rated Output Power

100

Watts

75

50 - 250 Hz, 1 input driven, limiter off

 

 

THD @ Rated Power

0.08

%

0.1

22k filter

 

 

THD @ 1 Watt

0.15

%

0.5

22k filter

 

 

DC Offset

5

mV-DC

30

@ Speaker Outputs

 

 

 

 

 

 

 

 

Measured at the speaker at speaker output

Damping factor

>100

n/a

30

Measured at amplifier board

terminals on the amp board.

 

 

 

 

 

 

 

 

Input Sensitivity

 

 

 

 

 

 

Input Frequency

50

Hz

n/a

Nominal Freq.

 

 

Line (L&R) Input

220

mVrms

154 - 308

To Rated Power

Single input driven

SUB (LFE) Input

125

mVrms

87 - 175

To Rated Power

SUB (LFE) input driven only

Speaker/Hi Level Input

2.2

Vrms

1.5 - 3.0

To Rated Power

(20 dB below Line In), Single input driven

 

 

 

 

 

 

 

 

Hi Level Max. Input Voltage

32

Vrms

30

Nominal Freq., Min. Volume

 

 

 

 

 

 

 

 

 

 

Signal to Noise

 

 

 

 

 

 

SNR-A-Weighted

100

dB

85

relative to rated power

A-Weighting filter

SNR-unweighted

90

dB

80

relative to rated power

22k filter

SNR rel. 1W-unweighted

65

dB

60

relative to 1W Output

22k filter

 

 

 

 

 

Volume @max, using RMS reading

 

 

Residual Noise Floor

1.2

mVrms

3.0

DMM/VOM (or A/P)

 

 

 

 

 

 

 

Volume @max, w/ A/P Swept Bandpass

 

 

Residual Noise Floor

0.8

mVrms

2.0

Measurement (Line freq.+ harmonics)

 

 

 

 

 

 

 

 

 

 

Input Impedance

 

 

 

 

 

 

Line Input (L, R,LFE)

10K

ohms

n/a

Nominal

 

 

Speaker/Hi Level Input

4.7K

ohms

n/a

Nominal

 

 

 

 

 

 

 

 

 

 

Filters

 

 

 

 

 

 

L&R Fixed Low-Pass Filter

170

Hz

150 - 200

@ -6dB ref. 100Hz

2nd order fixed

SUB (LFE) Low pass Filter

270

Hz

240 - 300

@ -3dB ref. 100Hz

2nd order fixed

Subsonic filter (HPF) 3rd Order

28

Hz

22 - 28

@ -3dB ref. 30Hz

3rd order fixed

 

 

 

 

 

 

 

 

Limiter

 

 

 

 

 

 

THD at Max. Output Power

2.0

%

5.0

 

 

 

 

 

 

 

 

 

 

 

Features

 

 

 

 

 

 

Auto - On -Off Selection Switch

YES

 

functional

 

Refer to ATO section

Phase Switch

0-180

deg

functional

 

 

 

Filter On/Off Switch

YES

 

functional

 

 

 

Volume Pot Taper (Lin/Log)

LOG

 

functional

 

A Taper

Speaker Out

YES

 

functional

 

Binding post connector L&R

2-Color LED power indicator

YES

 

functional

 

Blue: On, Amber: Stand-by

Power Switch

YES

 

functional

 

 

 

Fuse Holder

YES

 

functional

 

 

 

 

 

 

 

 

 

 

 

Input Configuration

 

 

 

 

 

 

Line In (L,R)

YES

 

functional

 

Dual RCA jack

SUB (LFE)

YES

 

functional

 

RCA jack

Speaker/Hi Level In

YES

 

functional

 

Binding post connector L&R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Signal Sensing (ATO)

 

 

 

 

 

 

Auto-Turn-On (yes/no)

YES

 

functional

Auto - on selection switch in Auto

 

 

ATO Input test frequency

50

Hz

n/a

Auto - on selection switch in Auto

 

 

ATO Level Line & SUB Input

4.0

mV

2.0 - 6.0

Auto - on selection switch in Auto

 

 

ATO Level Speaker in

40

mV

25 - 55

Auto - on selection switch in Auto

 

 

 

 

 

 

 

Amp connected and AC on, then input

 

 

ATO Turn-on time

5

ms

functional

signal applied

 

 

 

 

 

 

 

Time before muting, after signal is

 

 

ATO Turn-OFF Time

15

minutes

10 - 20

removed

 

 

 

 

 

 

 

 

 

 

Power on Delay time

3

sec.

functional

AC Power Applied

 

 

 

 

 

 

 

 

 

 

Transients/Pops

 

 

 

 

 

 

ATO Transient

5

mV-peak

10

@ Speaker Outputs

 

 

Turn-on Transient

50

mV-peak

100

@ Speaker Outputs

AC Line cycled from OFF to ON

2

 

SUB-TS7

 

 

 

 

harman/kardon

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Parameter

Nonimal

Unit

QA Test

Conditions

Notes

Specification

Limits

 

 

 

 

 

 

Turn-off Transient

50

mV-peak

100

@ Speaker Outputs

AC Line cycled from ON to OFF

 

 

 

 

 

 

 

 

Efficiency

 

 

 

 

 

 

 

 

 

 

 

 

Maximum allowable input power under nominal

 

 

 

 

12

 

input voltage and frequency, in stand-by mode (HOT

Stand-by Input Power

10

Watts

@ nom. line voltage

or COLD operation).

Power Consumption @ rated pow

170

Watts

200

@ nom. line voltage

100 Watts @ 4.0 ohms and nominal line voltage

 

 

 

 

 

 

 

 

Protection

 

 

 

 

 

 

 

 

 

 

 

 

Amplifier should resume operation after short circuit

Short Circuit Protection

YES

 

functional

Direct short at output

condition is removed.

 

 

 

 

 

 

Any user accessible metal parts should always

 

 

 

 

functional

 

remain at 65 degree C or less for domestic version

Thermal Protection

YES

 

 

or 55 degree C or less for EU version.

DC Offset Protection

YES

 

functional

DC present at Speaker Out leads

Relay or crowbar (for driver/fire protection),

Primary Fuse Rating

 

 

 

 

 

 

 

USA-Domestic (120V)

2.5

Amps

n/a

Type-T or Slo Blo

User-replacable fuse with UL/SEMCO rated holder.

3

SUB-TS7

harman/kardon

SUB-TS7 SUBWOOFER AMPLIFIER PANEL CONTROLS AND CONNECTIONS

¡

£

¢

§

ª

SUBWOOFER

LEVEL

FILTER

ON

MIN MAX

OFF

ON

AUTO

PHASE

REVERSE

NORMAL

SUB

R

L

LINE

LEVEL

IN

H L

I

G

H

L

E

V

E

L R

OUT

IN

IMPORTANT: CONNECT STRIPED WIRE TO RED () SPEAKER TERMINAL.

SUB-TS7 For use with

HKTS 7 System

CAUTIO N

RISK OF ELEC TR IC SHO CK

D O NO T OPE N

"WARNING: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE T 2.5A L/250 VOLT FUSE"

"AVERTISSEMENT: UTILISEZ UN FUSIBLE DE RECHANGE DE MEME TYPE T 2.5A L/250V"

POWER

AC 120V~60Hz

¡ Subwoofer-Level Control

™ High-Cut (Low-Pass) Filter Switch

£ Music-Sense On/Off Switch

¢ Phase Switch

¡ Subwoofer-Level Control: Volume may be adjusted using the SubwooferLevel Control. Turn the control clockwise to increase the SUB-TS7’s volume, or counterclockwise to decrease it.

™ High-Cut (Low-Pass) Filter Switch:

Placing this switch in the ON position activates circuitry that cuts out all audio input signals above 120Hz. This allows the SUBTS7 to focus its power on reproducing the low-frequency portion of the signal, avoiding

∞ Line-Level Subwoofer (SUB) Input

ª Master Power Switch

§ Line-Level Full-Range Inputs

‚ AC Power Cord

¶ Speaker-Level Outputs

 

• Speaker-Level Inputs

 

inefficiency and distortion. Engage this filter when using the Speaker-Level Inputs •, or when using the Line-Level Full-Range Inputs §, unless your receiver or processor processes its line-level output using a lowpass filter. The filter has no effect when the

SUB Input ∞ is used.

£ Music-Sense On/Off Switch: When placed in the AUTO position, and when the

Master Power Switch ª is turned on, the SUB-TS7 will automatically turn itself on or

place itself in the Standby mode, depending on whether it is receiving an audio signal. When this switch is placed in the ON position, the SUB-TS7 will remain on, whether or not it is receiving an audio signal.

An LED located on top of the SUB-TS7 indicates whether the SUB-TS7 is in the ON or STANDBY state when used with the MusicSense On/Off Switch £ in the AUTO position. The LED is lit blue to indicate that the SUB-TS7 is receiving an audio signal

4

SUB-TS7 SUBWOOFER AMPLIFIER PANEL CONTROLS AND CONNECTIONS 5

SUB-TS7

harman/kardon

SUB-TS7 SUBWOOFER AMPLIFIER PANEL CONTROLS AND CONNECTIONS

and is turned on, and the LED is lit amber to indicate that no signal is being received and the SUB-TS7 is in Standby mode.

When the Music-Sense On/Off Switch £ is in the ON position, the LED will be

lit blue, whether or not an audio signal is present.

When the Master Power Switch ª is turned off, the LED goes dark, no matter which position the Music-Sense On/Off Switch £ is in.

¢ Phase Switch: This switch determines whether the SUB-TS7 subwoofer’s pistonlike action moves in and out in phase with the main speakers. If the speakers were to play out of phase, the sound waves produced by the subwoofer would be cancelled out, reducing bass response. This phenomenon depends in part on the relative placement of the speakers in the room. In most cases, the Phase Switch ¢ should be left in the NORMAL position. However, it does no harm to experiment with the Phase Switch ¢, and you may leave it in the position that maximizes bass response.

∞ Line-Level Subwoofer (SUB) Input:

Connect the subwoofer output of a receiver with digital surround sound decoding, such as Dolby* Digital or DTS®, to this input. This input bypasses the SUB-TS7’s internal crossover circuitry, and should only be used with a filtered signal. If your receiver does not have digital decoding, you should use the

Line-Level Full-Range Inputs § instead.

§ Line-Level Full-Range Inputs: Connect the line-level subwoofer output or preamp output(s) of your receiver or amplifier to these inputs. If your receiver does not have a separate subwoofer output, use a Y-adapter (not supplied) to bridge the receiver’s preamp output to the main amp input for that channel, and connect the long end of the adapter

to the corresponding line-level input on the SUB-TS7. If your receiver has only a single subwoofer output, you may connect it to either the left or right line-level input on the SUB-TS7, and no Y-adapter is needed.

¶ Speaker-Level Outputs: If you are using the Speaker-Level Inputs • on the SUB-TS7, you should connect these bindingpost terminals to your front left and right speakers, remembering to maintain polarity by connecting the (+) terminal on the SUBTS7 subwoofer to the (+) terminal on the speaker, and the (–) terminal on the SUBTS7 subwoofer to the (–) terminal on the speaker. If you are not using the SpeakerLevel Inputs •, then connect your front left and right speakers directly to your receiver or amplifier. See pages 9 through 12 for further information on speaker connections.

• Speaker-Level Inputs: Connect these binding-post terminals to the main left and right speaker terminals of your receiver or amplifier, if your receiver or amplifier does not have a line-level subwoofer output. Remember to maintain polarity by connecting the (+) terminal on the receiver/amplifier to the

(+) terminal on the SUB-TS7 subwoofer, and the (–) terminal on the receiver/amplifier to the

(–) terminal on the SUB-TS7 subwoofer.

ª Master Power Switch: Place this switch in the “•” position to power-on the SUB-TS7 subwoofer. The SUB-TS7 will then be either in the Standby mode or completely on, depending on the position of the MusicSense On/Off Switch £.

‚AC Power Cord: Make sure to plug this cord into an active, unswitched electrical outlet for proper operation of the SUB-TS7.

The cord should not be plugged into the accessory outlets found on some audio components.

6 SUB-TS7 SUBWOOFER AMPLIFIER PANEL5CONTROLS AND CONNECTIONS

SUB-TS7

harman/kardon

SPEAKER CONNECTIONS

Dolby* Digital or DTS® (or Other Digital Surround Mode) Connection

USE THIS INSTALLATION METHOD FOR DOLBY DIGITAL, DTS OR OTHER DIGITAL SURROUND PROCESSORS:

Use the line-level input jack marked SUB ∞ for the Low-Frequency Effects channel. Connect this jack to the subwoofer output or LFE output on your receiver or amplifier. Connect each speaker to the corresponding speaker terminals on your receiver or amplifier.

Make sure you’ve configured your surround sound processor for “Subwoofer On.” The front left, front right, center and surround speakers should all be set to “Small.”

When all connections have been made, plug the AC power cord on the subwoofer into an AC outlet.

 

Front

 

 

 

 

 

 

 

Center

 

 

 

 

 

Front

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

Left

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Right

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SUB-TS7 Subwoofer

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LINE LEVEL IN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SUB

 

R

L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Front

 

Front

 

 

Left

 

Right

 

 

 

SUB/LFE

 

 

 

 

Out

 

 

 

Surround

 

Surround

 

 

Left

Center

Right

 

Surround

 

Surround

 

Left

 

Right

+

Receiver

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10 SPEAKER CONNECTIONS

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SUB-TS7

harman/kardon

 

 

 

SPEAKER CONNECTIONS

 

 

 

 

Dolby Pro Logic* (Non-Digital) – Line Level

USE THIS INSTALLATION METHOD FOR DOLBY PRO LOGIC APPLICATIONS (NOT DOLBY DIGITAL, DTS OR OTHER DIGITAL PROCESSING), WHERE THE RECEIVER/ PROCESSOR IS EQUIPPED WITH A SUBWOOFER OUTPUT, OR A VOLUMECONTROLLED PREAMP (LINE-) LEVEL OUTPUT:

Use the supplied RCA-type interconnect cable to connect the line-level subwoofer output on your receiver or amplifier to either the left or right Line-Level Full-Range Input § on the SUB-TS7 subwoofer. Use both the left and right inputs on the subwoofer if your receiver or processor has both left and right line-level outputs. In that case, you will need to supply a second interconnect cable.

If your receiver is equipped with line-level outputs but does not have a separate subwoofer output, use a Y-adapter (not supplied) to bridge the receiver’s preamp output to the main amp input for that channel, and connect the long end of the adapter to the corresponding line-level input on the SUB-TS7.

IMPORTANT: Do not use the SUB Input

∞ on the subwoofer with Dolby Pro Logic processors.

If your receiver/processor has a built-in low- pass-crossover filter for the subwoofer output, you may use the SUB Input ∞ to bypass the subwoofer’s internal crossover.

Connect each speaker to the corresponding speaker terminals on your receiver or amplifier.

Make sure that you have configured your surround sound processor for “Subwoofer On.” The front left, front right, center and surround speakers should all be set to “Small.”

When all connections have been made, plug the AC power cord on the subwoofer into an AC outlet.

Front

 

 

Center

Front

 

 

+

 

 

 

Left

 

 

 

 

 

 

Right

 

 

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SUB-TS7

Subwoofer

Line-Level

R L

 

Front

 

Front

 

 

Left

 

Right

 

 

 

SUB/LFE

 

 

 

 

Out

 

 

 

Surround

 

Surround

 

 

Left

Center

Right

 

Surround

 

Surround

 

Left

 

Right

+

Receiver

+

7

SPEAKER CONNECTIONS 11

Harman Kardon HKTS-7 Service manual

SUB-TS7

harman/kardon

SPEAKER CONNECTIONS

Dolby Pro Logic

(Non-Digital) – Speaker Level

USE THIS INSTALLATION METHOD FOR DOLBY PRO LOGIC APPLICATIONS (NOT DOLBY DIGITAL, DTS OR OTHER DIGITAL PROCESSING), WHERE THE RECEIVER/ PROCESSOR DOES NOT HAVE A SUBWOOFER OUTPUT, OR A VOLUMECONTROLLED PREAMP (LINE-) LEVEL OUTPUT:

Connect your receiver or amplifier’s front left and right speaker terminals to the left and right Speaker-Level Input • terminals on the SUB-TS7 subwoofer that are marked “High Level In.” Connect the left and right Speaker-Level Output ¶ terminals on the SUB-TS7 subwoofer that are marked “High Level Out” to the corresponding terminals on the back of your front left and right speakers.

Connect your receiver or amplifier’s center and surround left and right speaker terminals to the corresponding terminals on the back of your center, and surround left and right speakers.

When all connections have been made, plug the AC power cord on the subwoofer into an AC outlet.

 

Front

 

 

 

 

Center

 

Front

 

 

 

 

 

+

 

 

 

 

Left

 

 

 

 

 

 

 

Right

 

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SUB-TS7

Subwoofer

H L

I

G

H

L

E

V

E

L R

Receiver

Front Left

 

Center

Front Right

 

 

 

 

 

 

 

 

Surround Left

Surround Right

 

Surround

Surround

Left

 

 

Right

+

+

8

12 SPEAKER CONNECTIONS

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