Infinity-ModelFifteen-sub-sm 电路图 维修手册.pdf

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1、 Cascade Series Cascade Series Model Fifteen Subwoofer Model Fifteen Subwoofer SERVICE MANUAL Infinity Systems, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev 1 3/06 RadioFans.CN 收音机爱 好者资料库 - CONTENTS - BASIC SPECIFICATIONS .1 EXPLODED VIEW/PACKAGING PARTS LIST.2 DETAILED SPECIFICATIONS.3

2、CONTROLS AND CONNECTIONS.6 OPERATION.7 TEST SET UP AND PROCEDURE.8 BLOCK DIAGRAM.9 ELECTRICAL PARTS LIST (120v) .10 PCB DRAWINGS.17 SEMICONDUCTOR PINOUTS.20 SCHEMATICS (120v).21 Basic Specifications Cascade Model Fifteen Powered Subwoofer Frequency Response 32Hz 150Hz (3dB) 29Hz 150Hz (6dB) Maximum

3、Amplifier Output 800 Watts RMS (20Hz 150Hz with no more than 0.1% THD) Crossover Frequency 50Hz 150Hz, 24dB/octave, continuously variable (Normal/LFE switch set to “Normal”) Drivers Four 6 x 6 (152mm x 152mm) Dimensions (H x W x D) 13 x 37 x 8-1/2 (330mm x 940mm x 216mm) Weight 98 lb (44.5kg) Infini

4、ty 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. 1 RadioFans.CN 收音机爱 好者资料库 Item DescriptionPart NumberQty 1RABOS kitQT01800

5、03010 1 (kit) 2Packing Foam8060000165301 (set) 36 x 6 Woofer510165 116014 4Transformer 120VBY01520010101 Transformer 230VBY01520010201 5Rubber feetTT00350010124 6Cabinet Cherry/Black/Silver Not For Sale1 7Amplifier 120V/230VNot For Sale1 8Control panelNot For Sale1 9Spike Foot Kit (Spike Feet) TT001

6、20070104 Spike Foot Kit (Nuts)JG5899324 Spike Foot Kit (Wrench)QT00680020101 10Owners manual8190010820021 Warranty card8190010820051 11Outer Carton (Cherry)8050010165061 Outer Carton (Black)8050010165071 Outer Carton (Silver)8050010165081 12Access DoorNot For Sale1 13Infinity LogoMP00430010001 MODEL

7、 FIFTEEN EXPLODED/PACKING VIEW 2 Model FifteenModel Fifteen Cascade RadioFans.CN 收音机爱 好者资料库 Cascade Model Fifteen Subwoofer 800W Powered Sub/ Plate Amp LINE VOLTAGEYes/NoHi/Lo LineNom.UnitNotes US 120vac/60HzYes108-132120VrmsNormal Operation ParameterSpecificationUnit QA Test LimitsConditionsNotes A

8、mp Section Type (Class AB, D, other)D- Load Impedance (speaker)4OhmsNominalZ-curve required Rated Output Power800WattsRegulated 120 V line5% tolerance applies THD Rated Power1%22k filter, 50Hz800W +/- 5% THD 1 Watt0.5%22k filter, 50Hz DC OffsetmV-DC 15measured at 50 Hz Input Sensitivity Line Input37

9、0 mVmVrms900 W 50Hz1 input driven Signal to Noise SNR-A-Weighted100dBArelative to rated powerA-Weighting filter SNR-unweighted70dBrrelative to rated power22k filter SNR rel. 1W-unweighted60dBrrelative to 1W Output22k filter Residual Noise Floor3mVrms Volume max, using RMS reading DMM/VOM (or A/P) Re

10、sidual Noise Floor3mVrms(max) Volume max, w/ A/P Swept Bandpass Measurement (Line freq.+ harmonics) Input Impedance Line Input10 kohmsNominal Active Filters Low Pass (fixed or variable)Variable- Frequency50 - 150 Hz.Hz Slope24dB/Octave QButterworth - Subsonic filter (HPF)fixed- Frequency33Hz Slope12

11、dB/Octave Q2.5 - Friend CircuitFIXED- Frequency80 HzHznotch filter Dip-4dB Q1 - Special filterRABOS-parameteric EQ, variable f, Q and notch depth. Switches Main Power ON/OFFYES- Typerocker-Located on amp plateTV-5 Rabos ON/OFFYES- Typemini toggle-Located on amp plate Polarity SwitchYES-Off: 0; On: 1

12、80 Typemini toggle-Located on amp plate Limiter (yes/no)YEScompressor and limiter THD at Max. Output Powerless than 10%Maximum Output PowerMax THD as a result of limiting. Output Volume Control Volume Control PotYES- mounted on amp panel Taper (lin/log)log A taper- minimum settingno output Input/Out

13、put Configuration Line In (L,C,R,AC3,Mono)Stereo-RCA phono jack, gold plated LFE InYES-Shared with R Line In jack Line Outputs (L,C,R)YES- Hi Level OutYES- Signal Sensing (ATO) Auto-Turn-On (yes/no)YES- ATO Input Test Frequency100Hz ATO Input Threshold2mVtyp.LPF On, BOS Off ATO Low Pass cutoff400Hz4

14、50ATO-LPF for noise immunityLPF On, BOS Off ATO Turn-on time1ms10 Amp connected and AC on, then input signal applied ( 1 W output ) Auto Mute / Turn-OFF Time10minutes 5 t 15Time before muting, after signal is removed Model FifteenModel Fifteen Cascade 3 Power on Features Power on Delay timegreater t

15、han 2sec.AC Power Applied Power on LEDYES-Bi-color LED located on front of cabinet Normal On/Offgreen / redcolorATO mode only ATO-colorActive: green; Standby: red Transients/Pops ATO Transient5mV-peak Speaker Output Turn-on Transient30mV-peak Speaker OutputAC Line cycled from OFF to ON Turn-off Tran

16、sient30mV-peak Speaker OutputAC Line cycled from ON to OFF Efficiency Stand-by Input Power13Wattstyp. nom. line voltage AC Power Cons.1W22Wattstyp. nom. line voltage Power Cons.rated power1080Wattstyp. nom. line voltageMeasured is Watts, not VA Efficiency74%typ. nom. line voltage Protection Short Ci

17、rcuit Protection YES-Direct short at output Thermal Protection YES- threshold 65 deg. C at panel DC Offset ProtectionYES-DC present at Speaker Out leadsRelay for driver/fire protection Line Fuse Rating ( 120 V )6.3AmpsType ADL or MDL Model FifteenModel Fifteen Cascade 4 B CASCADE MODEL FIFTEEN Rear

18、Panel CONTROLS ANDCONNECTIONS Line-Level Inputs Line-Level Outputs Power Indicator Subwoofer Level (Volume) Control Crossover Adjustment Phase Switch Normal/LFE Selector Power Switch Bass Optimization Controls (see page 5) R.A.B.O.S.Selector Center-Frequency Adjustment Bass Optimization System Level

19、 Adjustment BBass Optimization System Bandwidth Adjustment Cascade 15 OM 9/14/05 2:35 PM Page 5 Model FifteenModel Fifteen Cascade 5 CASCADE MODEL FIFTEEN CONNECTIONS If you have a DolbyDigital or DTSreceiver/processor with a low-frequency-effects (LFE) output: Set Normal/LFE Switch to LFE. NOTE:In

20、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. The Cascade Model Fifteen also includes a set of line outputs.These outputs allow you to “daisy-chain”one Model Fifteen to multiple Model Fiftee

21、n subwoofers.Simply connect the first subwoofer as described above and then run a subwoofer cable from the line output(s) to the line input(s) on the next sub. NOTE: This line output is before the R.A.B.O.S. circuit.Each sub- woofers R.A.B.O.S.controls must be individually adjusted during the R.A.B.

22、O.S.setup. 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 recommen

23、ded that you use a Y-connector (not included) to maximize performance. SUBWOOFER OR LFE OUTPUT OR Cascade 15 OM 9/14/05 2:35 PM Page 6 Model FifteenModel Fifteen Cascade 6 CASCADE MODEL FIFTEEN Power On Plug your subwoofersAC cord into a wall outlet.Do not use the outlets on the back of the receiver

24、. 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 subw

25、oofer. 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

26、 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 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

27、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 been pressed to the ON position? Once you have confirmed that the subwoofer is a

28、ctive,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 overpo

29、wer 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,

30、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. OPERATI

31、ON 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 owners manual to learn how to view or change this setting. The

32、 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 subwoofers efforts on the

33、 ultradeep bass sounds required by todays 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 spe

34、akers 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 room size,subwoofer placement and listener position.Adjust the Phase Switch to maximize bass output at the listening position. Cascade

35、15 OM 9/14/05 2:35 PM Page 7 Model FifteenModel Fifteen Cascade 7 Cascade Model Fifteen TEST PROCEDURE The operation of the Cascade Model Fifteen subwoofer, and the proper settings for the Room Adaptive Bass Optimization System, or R.A.B.O.S., is thoroughly covered in the Owners manual. For service

36、purposes, the R.A.B.O.S. system is canceled when all three front panel controls (F) (L) (W) are turned fully CW (Clockwise), or if the R.A.B.O.S. On/Off switch is OFF. The only other control of concern is the Main Level Control on the front panel, which operates like a traditional potentiometer. Equ

37、ipment needed: Function/signal generator/sweep generator Integrated Amplifier Multimeter RCA cables; Speaker cables General Unit Function (UUT = Unit Under Test) Switch/Controls: MAIN LEVEL control full Counterclockwise (Min) CROSSOVER (Hz) Full Clockwise (150) R.A.B.O.S. On/Off switch OFF PHASE swi

38、tch - either position (3) R.A.B.O.S. controls do not matter 1) From the signal generator, connect one line level (RCA) cable to the Line In jacks (L/R) on the UUT. Use a Y- cable from a mono source if necessary to connect to both inputs. 2) Turn on generator; adjust to 100mV, 50 Hz. 3) Plug AC power

39、 cord in UUT, turn power switch ON. 4) LED should be ON (faceplate). Turn up LEVEL control to full Clockwise (Max). 5) LED should be Green; Bass response should be heard and felt from woofer at bottom of cabinet. 6) Turn LEVEL control full Counterclockwise (Min). Turn power switch OFF. Sweep Functio

40、n 1) Follow steps 1-5 above, using a sweep generator as a signal source adjust the generator to 75mV, 50 Hz. 2) Sweep generator from 20Hz to 300Hz. Listen for any rattles, clicks, buzzes or any other noises. If any unusual noises are heard, test woofer according to the instructions below. Driver Fun

41、ction 1) Remove woofer from the enclosure. 2) Check DC resistance of woofer; it should be 3.7 10%, 3) Connect a pair of speaker cables to woofer 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 6.

42、0V. 4) Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises. Model FifteenModel Fifteen Cascade 8 Model FifteenModel Fifteen Cascade 9 Cascade Model Fifteen Electrical Parts List Part NumberDescription QtyReference Designator MAIN BD Resistors 020-120

43、401-120ZS GS carbon film resistor 1K2 1W J TAP1 R6 024-000097-120ZS GS SMD resitor PN:12060R 1/4W J 121 D31 024-100498-121ZS GS SMD resistor 1K 1/4W J 122 R119,121 024-100598-121ZS GS SMD resistor 10K 1/4W J 113 R1,4,7,16,122,123,126,128,138,165,168,170,125, *024-100698-121ZS GS SMD resistor 100K 1/

44、8W J 1 R120 024-130598-120ZS GS SMD resistor 13K 1/8W J 02 R118,169, 024-150598-100ZS GS SMD resistor 15K 1/8W F 02 R20,21 024-220298-121ZS GS SMD resistor 22R 1/4W J 12 R28,29 024-220498-120ZS GS SMD resistor 2K2 1/4W J 14 R17,31,110,139 024-220597-120ZS GS SMD resistor 22K 1/4W J 11 R127 024-23249

45、7-100ZR GR SMD resistor 2K32 1/4W F 2 R189,192, 024-332497-100ZS GS SMD resistor 3K32 1/4W F 1 R22 024-332598-100ZS GS SMD resistor 33K2 1/4W F 2 R60, 60B 024-470298-120ZS GS SMD resistor 47R 1/8W J 04 R24-27 024-470398-120ZS GS SMD resistor 470R 1/8W J 4 R145,155,177,186 024-470598-121ZS GS SMD res

46、istor 47K 1/4W J 12 R3,171 024-560497-120ZS GS SMD resistor5K6 1/4W J 11 R30, 024-560598-121ZS GS SMD resistor 56K 1/4W J 11 R15 024-590498-100 SMD resistor 5K9 1/8W F 01 R63 024-680498-121ZS GS SMD resistor 6K8 1/4W J 12 R23,19 021-100403-020ZS GS MOF resistor1K/3W J TAPI2R173, 48 022-005105-020ZS

47、GS resistor 0R05 ohm 5W1 R2 Capacitors 034-100614-301ZR GR electrolytic cap. 105 100uF/16V M 1 C117 034-100615-307ZR GR electrolytic cap.100uF/16V M 1 C62 034-100625-300ZS GS electrolytic cap. 100uF/25V M 1 C8 034-220525-300ZR GR electrolytic cap. 22uF/25V M 2 C25,26 034-220625-300ZS GS electrolytic cap. 220uF/25V M 1 C100 031-100143-101ZS GS SMD cap.0u01/50V 1202 C27,28 031-100144-103ZS GS SMD cap. 0u001/50V K 1 C130 031-100344-100ZS GS SMD cap. 0u1/50V K 081 C116 031-100364-100ZS GS SMD cap. 0u1/100V K 15 C69,112,115,135,138, 031-100384-100RZS GS SMD cap. 0u1/250V K 13