Infinity MODULUS Service Manual
Servo controlled subwoofer electronic control unit
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Also See for MODULUS:
- Owner's manual (15 pages) ,
- Owner's manual (28 pages) ,
- Owner's manual (6 pages)
Related Manuals for Infinity MODULUS
Summary of Contents for Infinity MODULUS
- Page 1 MODULUS Servo Controlled Subwoofer Electronic Control Unit SERVICE MANUAL Infinity Systems Incorporated 250 Crossways Park Dr. Woodbury, New York 11797 Rev3 5/2005...
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Page 2: Table Of Contents
Basic Specifications ………………………………….………………….2 Controls/Set-up …………………………….…….…………….………….3 Operation ………………………………….….…………………………..6 Detailed Description of ECU…………………….…….….……………..7 Troubleshooting the System........……………………..9 Tech Tip….…………………………………...………………………….10 Removal/Installation of Amplifier…..…………….……….……………12 Modulus Exploded View…………………….…….….…….…………..13 Amplifier Adjustment…………………………………………………….14 Burnt PCB Repair Instructions…..…………….……….………………15 Input Plate Schematic………………………..…………………………16 Control Woofer Wiring………………………………………………..…17 ECU Transformer……………………………………………………..…18 Main Power Transformer………………………………………………..19 Din Cable Pinout…………………………………………………………20 Mechanical Parts List……………………………………………………22... -
Page 3: Basic Specifications
Modulus MODULUS SUBWOOFER SPECIFICATIONS Frequency Response: 22 - 200 Hz Crossover Frequency: High Pass: 22Hz and 35 Hz, 12 dB per octave Low Pass: 50 - 200 Hz (Continuously Variable, 12dB per octave) Output Power: 250 Watts (RMS) Driver: 12" IMG Woofer w/ accelerometer - (2 Ohm DCR) -
Page 4: Controls/Set-Up
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Page 7: Operation
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Page 8: Detailed Description Of Ecu
Modulus DESCRIPTION OF MODULUS ECU ( E lectronic C ontrol U nit) This description of the role of the Modulus ECU is a somewhat more detailed description that is included with the Owner’s manual DESCRIPTION The Modulus ECU is an active electronic crossover intended to be connected between your system preamplifier and your subwoofer &... - Page 9 If you are using a powered subwoofer of some type other than the Infinity subwoofer designed for this system, we recommend using either one set of controls or the other; It would be redundant to manipulate both sets of controls. If you are going to use the controls on your subwoofer, set the "Crossover"...
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Page 10: Troubleshooting The System
Modulus TROUBLESHOOTING THE MODULUS SUBWOOFER SYSTEM (IF999912 B/W) BLOWS LINE FUSE IN CABINET IMMEDIATELY Usually: Short in toroidal transformer (power supply) Could be: Short in amplifier Could be: Voltage selector switch in wrong position BLOWS LINE FUSE IN CABINET AFTER SHORT PERIOD OF TIME, PLAYING MUSIC... -
Page 11: Tech Tip
Modulus TECH TIP We strongly suggest a voltage is checked before a Modulus amplifier replacement takes place. It deals with the output voltage coming from the toroidal transformer (power supply). A small number of units were manufactured with the power supply miswired, resulting in a higher than normal supply voltage. The supply is mounted and located on the inside of the base where the switch/controls are. - Page 12 Modulus TECH TIP (cont’d) For correction of 91+ v (Solution – switch pink-violet transformer wires) Correct Power Supply Wiring Diagram...
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Page 13: Removal/Installation Of Amplifier
Modulus REMOVAL/INSTALLATION OF MODULUS SUBWOOFER AMPLIFIER (036-4393) REMOVAL Lay cloth or other protection under cabinet, lay unit down so that you are viewing the base (where the switch & fuse are). Amplifier/heatsink should be at the top left corner at this point. -
Page 14: Modulus Exploded View
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Page 15: Amplifier Adjustment
Modulus MODULUS AMPLIFIER ADJUSTMENT (Performed with the Amplifier out of the cabinet) Attach the amplifier to the power supply (using both molex connectors) and to the ECU (with the grey control cable) just like it would be powered if it were fully assembled. The following describes a method to drive the amplifier at a certain input voltage and frequency from the ECU, and to take measurements at two different frequency points (low and high) at the output of the amplifier. -
Page 16: Burnt Pcb Repair Instructions
Modulus MODULUS PC BOARD REPAIR In the event that the Modulus amplifier PC board is charred in the area of R27 & R28 and the traces/connections on the board seem unrepairable, follow the procedure below to repair such a unit: 1) Replace power resistors R27 &... -
Page 17: Input Plate Schematic
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Page 18: Control Woofer Wiring
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Page 19: Ecu Transformer
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Page 20: Main Power Transformer
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Page 21: Din Cable Pinout
Modulus MODULUS DIN CABLE (639-4458A) PINOUT Below are the pin outputs to the five pin Din cable; it is depicted when the cable is plugged into the ECU (turned ON) and you are facing the opposite end of the plug. - Page 22 Modulus...
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Page 23: Mechanical Parts List
Modulus MODULUS MECHANICAL PARTS LIST Description Part Number Grille (Black) A026-4392 Grille (White) A026-4392W 12” Control Woofer (2 ohm DCR) A028-5822 Din Cable assembly (25”) 639-4458A Sub Power Cord (6’) 615-5141 Sub Power Cord (6’) 90 degree head 615-5424 Power Cord (6’) for ECU... - Page 25 Modulus...
- Page 26 Modulus PART# DESCRIPTION RS1868 (R17-24) 0.1 ohm, 5W WW 10% Resistor 306-0798 1N4004 DIODE 306-0805 1N4148 DIODE 306-8042 FEP16DT DUAL DIODE 306-8043 FEN16DT DUAL DIODE 307-8126 IN5353B 16V 5W ZENER DIODE 325-4258 LF347N IC 325-6548 LF353N IC 50363 MPSA12 TRANSISTOR...
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Page 27: Schematics
Modulus... - Page 28 Modulus VR1, VR3 Level, Frequency Part# 146-5127 Phase Part# 146-5955...
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Page 29: Package
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