Infinity CSW-10 Service manual

Beta™ SW Series

CSW-10 Subwoofer

SERVICE MANUAL

Infinity Systems, Inc.

250 Crossways Park Dr.

Woodbury, New York 11797 Rev1 9/2004

CSW-10

- CONTENTS -

BASIC SPECIFICATIONS …………………………….………………….………..1 DETAILED SPECIFICATIONS…..……………………………………………….…..2 AMPLIFIER ACCESS………………..………………………………………………..3 CONTROLS AND CONNECTIONS…………………………………….…..………..4 OPERATION….……………………………………………………………………..….6

EXPLODED VIEW/PARTS LIST………………………………..……………....……7

TEST SET UP AND PROCEDURE…………….………..………………..…....……8

BULLETIN INF2004-02…..…………………………………….………………….…..9 BLOCK DIAGRAM…………………………..…………………………………..…….11 PCB DRAWINGS………………………………………………………………..….…12 ELECTRICAL PARTS LIST (120/230v) …………………………………………….20 SEMICONDUCTOR PINOUTS…………………………………….………….……..25 SCHEMATICS (120/230v)…………… …………………………...………………...26 PACKING….……………………………………………………………………………30

Basic Specifications CSW-10 Powered Subwoofer

Frequency Range: 22Hz – 150Hz (-3dB) 20Hz – 150Hz (-6dB) Max Amplifier Output: 650 watts RMS Low-Frequency Driver: 10" (254mm) C.M.M.D. Crossover Frequency: 50 -150 Hz (24dB/octave, continuously variable)

Dimensions (H x W x D): 14" x 13-1/4" x 15-3/8"

(356mm x 337mm x 391mm)

Weight: 52 lb (23.6 kg)

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.

CSW-10

CSW-10 450W 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) 4 Ohms Rated Output Power 450 Watts THD @ Rated Power 0.5 % THD @ 1 Watt 0.1 %

Dynamic Power 450 Watts DC Offset 80 mV-DC

Damping factor >20 DF

Input Sensitivity

Input Frequency 50 Hz

Left or Right inputs 10.29 mVrms

Left & Right with LFE or LP filter OFF Mode selected

Speaker/Hi Level Input 158 mVrms

US 120VAC/60Hz Yes 108-132 120 Vrms

EU 230VAC/50-60Hz Yes 207-264 230 Vrms

QA Test

Limits Conditions Notes

n/a n/a

Nominal

425

1 input driven

22K filter

0.2

22K filter

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

430

the burst signal

100

@ Speaker Outputs

Measured at amplifier board

Nominal Freq.

±2dB

To 1 Watt

10.17 mVrms

±2dB

To 1 Watt

Normal Operation Normal operation, MOMS required

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

3/20 Cycles @ 50 Hz, burst test into 4 Ohms, input driven 6dB above its maximum sensitivity, volume level at Maximum, RABOS Section OFF

Measured at the speaker cable. 200 Watts, measured at speaker output terminals located at the amp board.

Single input driven, Ap Zo=600 Ohms, LP ON, RABOS OFF, Volume ctrl & crossover at max

Single input driven , Ap Zo=600 Ohms, LP OFF, RABOS OFF, Volume ctrl & crossover at max

Single input driven, Ap Zo=25 Ohms, Normal, RABOS OFF, Volume ctrl & crossover at max

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)

Input Impedance

Line Input (L, R,LFE) 10K ohms

Speaker/Hi Level Input 10K ohms

Filters

LP 4th order variable 50-150 Hz Subsonic filter (HPF) 3rd Ord Low pass filter OFF Fixed Hz

BOS

Frequency Control --

Range 20-80 Hz Level Control -- -Range -14.1 to 0 dB Width(Q) Control -- -Range 4.5% to 49.5% octave

Limiter

THD at Max. Output Power

Features --

Auto - On -Off YES -Phase switch 0-180 deg Volume pot Taper (lin/log) LOG --

Variable crossover 50-150 Hz YES HP Speaker out YES LP On- Off Select switch YES --

Fixed Hz

YES n/a functional

Relative to rated power (400 Watts)

Relative to 1W Output Volume @max, using RMS reading

DMM/VOM (or A/P) Volume @max, w/ A/P Swept Bandpass Measurement (Line

freq.+ harmonics)

n/a

Nominal

n/a

Nominal

± 10 Refer to AP graph 1 ± 10 Refer to AP graph 1 ± 10 L or R input driven, LP Filter OFF Refer to AP graph 1

functional

functional functional functional A Taper

functional functional Pass through from the speaker input section functional Disables LP filter, intended for LFE

21 detent pot (0.1 oct. steps)

21 detent pot (0.5dB steps)

21 detent pot (5steps/0.1 octave)

A-Weighting filter 22K filter 22K filter

Refer to AP graph 2

Refer to AP graph 3

Refer to AP graph 4

No switch to select the ATO mode is provided, Refer to ATO section

4th Order LP Filter, 2nd order fix and 2nd order variable.

Input Configuration

Line In (L,R) & LFE Spkr/Hi Level In YES --

YES --

functional Dual RCA jack, L or R is used in LFE mode

functional Binding post connector L&R

CSW-10

Parameter Specification Unit

Signal Sensing (ATO)

Auto-Turn-On (yes/no) YES ATO Input test frequency 50 Hz ATO Level LFE Input 2.5 mV ATO Level Speaker in 30 mV

ATO Turn-on time 2 seconds

Auto Mute/ Turn-OFF Time 15 minutes

Power on Delay time 2 sec.

Transients/Pops

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

Efficiency

Efficiency 68 %

Stand-by Input Power 18

Stand-by Input Power 22 Watts Power Cons. @ 400W 584 Watts

Protection

Short Circuit Protection NO

Thermal Protection YES DC Offset Protection YES Line Fuse Rating USA-Domestic 5 Amps Type-T or Slo Blo-250 V EU 2.5 Amps Type-T or Slo Blo-250 V

QA Test

Limits Conditions Notes

functional functional functional functional

functional

1V-pk-pk 1V-pk-pk

functional

Auto - on selection switch in Auto

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

signal is removed

AC Power Applied

n/a

@ Speaker Outputs @ Speaker Outputs @ Speaker Outputs

400W of output power @ nominal line voltage, Amp in

OFF state, RED LED activated

@ nom. line voltage, Amp in On

state, Green LED activated

615

@ nom. line voltage

N/A

@1/8 max unclipped Power

DC present at Speaker Out leads

" " "

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

AC Line cycled from OFF to ON AC Line cycled from ON to OFF

Nominal Line voltage 120 VAC 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 signal applied. 400 Watts into 4 Ohms nominal line voltage

Temperature rise in accessible metal parts should not exceed 35K rise for domestic version or 30K rise for European versions (refer to requirements sheet). Unit is protected for overtemperature conditions Relay opens during a DC output condition

Internal fuse with UL/SEMKO rated holder

™

∞§¶•

‚

⁄

CSW-10

Rear Panel

CONTROLS AND CONNECTIONS

Line-Level Inputs

™

Power Indicator

Subwoofer Level (Volume) Control

Crossover Adjustment

∞

Phase Switch

Normal/LFE Selector

Power Switch

Bass Optimization Controls (see page 5)

•

Bass Optimization System Selector

Center-F requency Adjustment

‚

Bass Optimization System Level Adjustment

⁄

Bass Optimization System Bandwidth Adjustment

CSW-10

CONNECTIONS

If you have a Dolby* Digital or DTS®receiver/processor with a low-frequency-effects (LFE) output:

• Set Normal/LFE Switch to LFE.

NOTE:In this case,you do not need to use a Y connector.Simply connect the LFE output on your receiver/processor to either the left or right input on the subwoofer.

SUBWOOFER OR LFE OUTPUT

If your receiver/processor has subwoofer outputs for the left and right channels:

• Set Normal/LFE Switch to Normal.

NOTE:Some receivers have a single subwoofer output (do not confuse this with a single LFE output as described to the left).In that case,it is recommended that you use a Y connector (not included) to maximize performance.

CSW-10

Power On

Plug your subwoofer’sAC 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

on the

rear panel.

Auto On/Standby

With the Power Switch ¶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

can be left on.You may turn off the Power Switch

for extended periods of nonoperation,e.g., when you are away on vacation.

Adjust Gain

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 half way.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

been pressed to the “On”position? Once you have confirmed that the subwoofer is active,proceed by playing a CD,record or cassette.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 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.

OPERATION

Crossover Adjustments

NOTE:This control will have no effect if the Normal/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 ∞ determines whether the subwoofer speaker’s piston-like 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 room size, subwoofer placement and listener position.Adjust the phase switch to maximize bass output at the listening position.

CSW-10

Exploded View

9 1

107

CSW-10

Technical Manual

CSW-10

EXPLODED VIEW

ITEM

DESCRIPTION

NO.

1. CSW-10 Amplifier 1 Not for Sale

4. Cup, Grille (Black) 4 333249-001

5. Logo CSW-10 1 351617-001

6. Foot Assembly, Rubber, 4 338037-002

-10 Cabinet

CSW

rim Ring, 10” CSW

T Trim Ring, 10” CSW-10 (Beech/Cherry) 1 352438-002

Cup, Grille (Beech/Cherry) 4 333249-003

Blk w/Threaded Insert

-10 (Black) 1 352438-001

QTY

Not for Sale

T NO.

ITEM

DESCRIPTION

NO.

7. DD Screw (woofer), 10-32 x 1 FIL 8 21754 Screw (trim ring)

8. #8 x 1”, PB, HXS, ZINC

9. Screw (amplifier) 12 900101-016 #8 x 1”, PB, PPH, BLK

10. Woofer, 10” Sub DCR=3.4 ohms ±10% 1 351508-001

11. Grille Assembly, Frnt CSW-10 (Black) 1 352332-003 (Beech/Cherry) 1 352332-004

QTY

T NO.

903802-016

CSW-10

Infinity Systems, 250 Crossways Park Drive, Woodbury, New York 11797

6/04

CSW-10

CSW-10 Test Set Up and Procedure

SYSTEM AURAL SWEEP TEST Equipment needed:

• Function/signal generator/sweep generator

• Integrated Amplifier

• Multimeter

• RCA cables

General Unit Function (UUT = Unit Under Test)

Switches/knobs on the amplifier faceplate:

Crossover Frequency Adjust full CW (150Hz) Phase switc h – ei th er posi tio n RABOS On/Off switch – OFF LFE switch - Normal

1. Remove the subwoofer grille.

2. From the signal generator, connect both right and left line level inputs (RCA jacks) – to signal generator and UUT. Use Y-cable if necessary from mono source.

3. On the amplifier, turn the LEVEL cont rol full Counterclockwise (Min).

4. Turn on generator, adj ust to 100mV, 50 Hz.

5. Plug in UUT; turn the power switch ON. Turn LEVEL control full Clo ckwise (Max).

6. LED sh ould now be Gree n; aggre ssive bass response should be se en from woofer – near max imum excursion.

Sweep Function

1. Follow steps 1-6 above, using a sweep generator as a signal source.

2. Sweep generator fr om 20H z t o 1kH z. Li s t en to th e cabinet and driver s for any rattles, clicks , buz ze s or any other noi s es . If any unus ual noi ses are heard, remove wo o fer an d tes t .

Driver Function (Woofer)

1. Remo ve woofer from cabinet; deta ch + and - wire clips.

2. Chec k DC resistance of woofer ; it should be 3.4 ohms ±10%.

3. Connect a pair of speaker cables to driver terminals. Cables should be connected to an integrated amplifier fed by a signal generator. Turn on generator and adjust so that speaker level output is 5.0V.

4. Sweep generator from 20Hz to 1k Hz . Li sten to driver for an y ru bbi n g, bu z zi ng , or other unusual noi ses.

CSW-10

Service Bulletin

Service Bulletin INF2004-02 – September 2004 This is considered a Minor repair To: All Infinity Service Centers Model: Beta CSW-10 Subject: Premature Limiting

A small number of CSW-10 subwoofers may limit the amplifer output prematurely when they are driven to high volume levels. This may result in the subwoofer “popping”, and then a lower than normal output. A normal output will not return until the volume is decreased, or the subwoofer is switched Off, then On again.

In the event you receive a CSW-10 subwoofer with a complaint of “Premature Limiting When Driven At High Levels”, follow the procedure below to correct this condition:

Synopsis: Add two diodes to the limiter section on the MAIN PCB, D90 and D91.

1) Remove the amplifier assembly from the cabinet by removing the (12) screws located around the perimeter of the plate (Red circles in image); it will still be connected by the speaker wires.

2) Remove the (2) screws used to secure the plastic cover to the amp panel (Blue arrows in image), separate the panel from the plastic cover, and unplug the speaker wires from MAIN PCB (Red & Blk).

3) Remove the MAIN PCB from the faceplate: a. Remove the (5) screws used to secure the amp module to the front panel (Pointing fingers in image). b. Unplug P1 Signal Harness (Harness with white wires) c. Remove ground wire (Black wire with ring terminal) d. Unplug Power Transformer wires (Red-White-Red)

4) Locate D90 & D91 trace locations close to the main power capacitors (refer to the image)

5) Solder two RLS4148 SMD Diodes in their designated areas, D90 and D91, Infinity part # 054-414803-100. IMPORTANT: POLARITY - Diodes should be soldered with their cathode facing into the amplifier assembly, anodes facing the PCB edge of the amplifier. You should be able to solder the diodes in place without PCB disassembly from the heatsink plate with care, and a long, pointed soldering tip.

6) Re-Attach the MAIN PCB to the faceplate, following in reverse order items #3a-d. Assure that the power transformer wires are connected with White in the center and Red wires to the outer sides of the rectifier.

Location of D90 & D91

(Installed)

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