Bose FreeSpace E4 Series II User manual

©2008 Bose Corporation Reference Number 278977-SM Rev. 01
Service Manual
FreeSpace®Business Music System
Model E4 Series II
Digital Signal Processor
and Power Amplifier
Electronic Copy Only

2
CONTENTS
Contents.............................................................................................................................................2
Safety Information.............................................................................................................................3
Warranty.............................................................................................................................................3
Product Description..........................................................................................................................4
Specifications.............................................................................................................................. 5-10
Electrostatic Discharge Sensitive (ESDS) Device Handling .......................................................11
Part List Notes.................................................................................................................................11
Amplifier Module Repair Information ............................................................................................11
Packaging Part List, FreeSpace®E4 Series II Business Music System (see Figure 1) ............12
Figure 1. FreeSpace E4 Series II System Packaging View ..............................................................12
Accessory Kit Part List (not shown) .............................................................................................12
Main Part List, FreeSpace E4 Series II Business Music System (see Figure 2)........................13
Figure 2. FreeSpace E4 Series II Business Music System Exploded View ......................................14
Main Part List, E4 Series II Power Supply / Power Amplifier PCB Module (see Figure 3) .......15
Figure 3. E4 Series II Power Supply / Power Amplifier PCB Module................................................15
Electrical Part Lists................................................................................................................... 16-72
Digital Signal Processor / User Interface PCB Assembly ..................................................... 16-36
E4 Series II Power Supply / Power Amplifier PCB Assembly ............................................... 37-51
FreeSpace 4400 Power Supply / Power Amplifier PCB Assembly........................................ 52-69
FreeSpace 4400 Power Amplifier Driver PCB Assembly ....................................................... 70-72
Disassembly Procedures ......................................................................................................... 73-74
Figure 4. E4 II Amplifier Module Assembly .......................................................................................74
Test Procedure Setup ............................................................................................................... 75-76
Test Procedures ........................................................................................................................ 77-80
Troubleshooting ........................................................................................................................ 81-89
Theory of Operation.................................................................................................................. 90-97
Accessories .....................................................................................................................................98
Figure 5. Flash Memory PCB Component Layout ............................................................................99
Figure 6. DSP PCBAssembly Component Layout ...........................................................................99
Figure 7. Wallplate Sense PCB Assembly Component Layout.......................................................100
Figure 8. Mic Sense PCB Assembly Component Layout................................................................100
Figure 9. Front Panel Display PCB Assembly Component Layout .................................................100
Figure 10. E4 Series II Upper and Lower Amplifier PCB Assembly Component Layout ................101
Figure 11. FS 4400 Upper Amplifier PCB Top Etch and Component Layout..................................102
Figure 12. FS 4400 Upper Amplifier PCB Bottom Etch and Component Layout............................103
Figure 13. FS 4400 Lower Amplifier PCB Top Etch and Component Layout..................................104
Figure 14. FS 4400 Lower Amplifier PCB Bottom Etch and Component Layout ............................105
Service Bulletin ..................................................................................................................... 106-107
Service Manual Revision History.................................................................................................108

3
SAFETY INFORMATION
1. Parts that have special safety characteristics are identified by the symbol on schematics
or by special notes on the parts list. Use only replacement parts that have critical characteristics
recommended by the manufacturer.
2. Make leakage current or resistance measurements to determine that exposed parts are
acceptably insulated from the supply circuit before returning the unit to the customer.
Use the following checks to perform these measurements:
A. Leakage Current Hot Check-With the unit completely reassembled, plug the AC line cord
directly into a 120V AC outlet. (Do not use an isolation transformer during this test.) Use a
leakage current tester or a metering system that complies with American National Standards
Institute (ANSI) C101.1 "Leakage Current for Appliances" and Underwriters Laboratories (UL)
UL6500 / UL60065 / IEC 60065 paragraph 9.1.1. With the unit AC switch first in the ON position
and then in OFF position, measure from a known earth ground (metal waterpipe, conduit, etc.)
to all exposed metal parts of the unit (antennas, handle bracket, metal cabinet, screwheads,
metallic overlays, control shafts, etc.), especially any exposed metal parts that offer an electrical
return path to the chassis. Any current measured must not exceed 0.5 milliamp. Reverse the
unit power cord plug in the outlet and repeat test. ANY MEASUREMENTS NOT WITHIN THE
LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE
ELIMINATED BEFORE RETURNING THE UNIT TO THE CUSTOMER.
B. Insulation Resistance Test Cold Check-(1) Unplug the power supply and connect a jumper
wire between the two prongs of the plug. (2) Turn on the power switch of the unit. (3) Measure
the resistance with an ohmmeter between the jumpered AC plug and each exposed metallic
cabinet part on the unit. When testing 3 wire products, the resistance measured to the product
enclosure should be between 2 and infinite MOhms. Also, the resistance measured to exposed
input/output connectors should be between 4 and infinite MOhms. When testing 2 wire prod-
ucts, the resistance measured to exposed input/output connectors should be between 4 and
infinite MOhms. If it is not within the limits specified, there is the possibility of a shock hazard,
and the unit must be repaired and rechecked before it is returned to the customer.
CAUTION: The Bose®E4 Series II Business Music System contains no
user-serviceable parts. To prevent warranty infractions,
refer servicing to warranty service stations or factory service.
PROPRIETARY INFORMATION
THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF
BOSE CORPORATION WHICH IS BEING FURNISHED ONLY FOR
THE PURPOSE OF SERVICING THE IDENTIFIED BOSE PRODUCT
BYAN AUTHORIZED BOSE SERVICE CENTER OR OWNER OF
THE BOSE PRODUCT, AND SHALL NOT BE REPRODUCED OR
USED FOR ANY OTHER PURPOSE.
The Bose E4 Series II Business Music System is covered by a limited 5-year transferable
warranty.
WARRANTY

4
PRODUCT DESCRIPTION
E-4 Series II Business Music System
The Bose®FreeSpace®E-4 Series II Business Music System is an integrated four-channel
digital signal processor and 400-Watt power amplifier for 70/100V business music applications.
The E-4 chassis provides a total of four source inputs (two Line In, one Mic/Line and one Mic/
Line/Page) to meet the needs of most business music installations. A Music on Hold (MOH)
output is also provided for simple integration into a phone system.
As a single component, the chassis provides all of the processing and control features required
for one to four zone business music applications. These features include:
• Auto Volume: When used with the optional FreeSpace Auto Volume Sense Mic, the E-4
system dynamically controls the program level in each zone so that the audio program
material can always be heard, regardless of the background noise.
• Scheduling: Allows you to program the E-4 system for automated on/off and source
selections according to time of day or day of week.
• Opti-Voice®Paging: Provides the appropriate sound level regardless of variations in
speech projection.
• Source Leveling: Automatically compensates for variations in source input levels.
• Dynamic Equalization: Maintains tonal balance at all listening levels.
• Room Equalization: Provides easy adjustment of tonal balance in each zone.
• Limiting: Protects loudspeakers from unwanted transient power loads.
• Signal Router: Meets the demands of most four-zone systems, allowing for any input signal
to be routed to any of the amplifier outputs.
• RS-232 Connection: Provides easy interfacing to your PC.
• Contact Closure Input: Allows remote power sequencing.
The integrated 400-Watt power amplifier features a patented power-sharing technology which
allocates power to each output.
For example, if you have a two-zone system that requires 5 Watts in zone 1 and 395 Watts in
zone 2, the FreeSpace E-4 Series II system distributes the power based on those needs.
The E-4 Series II also includes an easy-to-replace memory module, which holds a design file
and the current hardware configuration.

5
SPECIFICATIONS
Audio Input Source 1 unbalanced RCA, shell grounded through a 301 Ohm resistor
Connectors: Source 2 unbalanced RCA, shell grounded through a 301 Ohm resistor
Page balanced 4 pin Beau style: +, -, ground and contact closure in
Aux/Mic/Line 3 pin Beau style, +, - and ground
Mic 1-4 3 pin Beau style, +, - and ground
Direct In 4 pin Beau style, +, -, ground, and contact closure in
Audio Output
Connectors: Line out 4 pin Beau style, +, -, ground, and contact closure in
MOH out 2 pin Beau style, + and Ground
Amp 1-4 2 pin, Beau style, + and -
Control Connectors: Remote 1-4 RJ-45, 8 pin, ground shell
Standby In 2 pin Beau style, contact closure in and ground
Dimensions: 5.25"H x 16.5"W x 15.5"D (13.3 x 43.8 x 39.4 cm)
Weight: 30 lbs (13.6 kg)
AC Mains input: IEC standard User selectable 100/120 or 220/240V
3 pin 50/60 Hz
receptacle 300 Watts maximum
Overall Performance
Nominal Limits Conditions
Gain: 0 dB +1 dB at 1 kHz; input gain set to nominal 0 dB
Dynamic range: 100 dB >/= 96 dB measured with ADC/DAC full scale mapped to
+17 dBV; this is THD +N measured at FS-60,
through A-weighting filter, and expressed in dB
below full scale
THD+N: .05% .1% at +10 Vrms output, for signal frequencies from
30 Hz to 20 kHz
Crosstalk at 1 kHz: -80 dB </= -70 dB terminate unused input terminals with 100 Ohm
balanced-connected resistors.
Crosstalk at 10 kHz: -60 dB </= -50 dB terminate unused input terminals with 100 Ohm
balanced-connected resistors.
Frequency response: 30 - 20 kHz +3 dB reference 1 kHz, measured at 0 dBV input
Output noise: -70 dBV </= -65 dBV channel noise measured through an A
weighting filter. Gain structure set to deliver
rated power and expressed in dBV

6
SPECIFICATIONS
Line Input Source 1 and 2
Nominal Limits Conditions
Source impedance: 200 Ohms 10 to 2k Ohm frequency response specification maintained
with sources over this range
Input impedance
differential: +/> 50k Ohm +/-20% at 1 kHz
CMRR referred to 80 dB >/= 74 dB at 1 kHz, 20 dB gain, 200 Ohm source
output: impedance
Input sensitivity for -20 dBV to +/-1 dB at 1 kHz
codec FS: +17 dBV
Gain, all settings: 20 dB to +/-1 dB 1 kHz, 50 Ohm source
-20 dB
Maximum input level: +17 dBV >/= +17 dBV THD+N </= 0.3%, 30-20 kHz, 0 dB gain
THD+N: .001% .01% at +10 dBV output, 1 kHz, 20 dB gain
Crosstalk at 1 kHz: -90 dB </= -80 dB
Crosstalk at 10 kHz: -70 dB </= -60 dB
Frequency response: 30 to 20 kHz +/-1.5 dB reference 1 kHz, measured at 20 dB gain and
with 0 dBV output
Page and Aux/Mic Inputs
Nominal Limits Conditions
Source impedance: 200 Ohms 10 to 2k Ohm frequency response specification maintained
with sources over this range
Input impedance
differential: 20k Ohm +/-5% at 1 kHz
Equivalent input noise at 60 dB, at 60 dB, A-weighted RMS, 200 Ohm source
at INA129 gains of 60 -130 dBV -127 dBV termination
dB, 40 dB, 20 dB and at 40 dB, at 40 dB,
0 dB: -127 dBV -125 dBV
at 20 dB, at 20 dB,
-115 dBV -113 dBV
at 0 dB, at 0 dB,
-96 dBV -93 dBV

7
SPECIFICATIONS
Page and Aux/Mic Inputs (continued)
Nominal Limits Conditions
CMRR referred 90 dB >/= 70 dB at 1 kHz, 60 dB gain, from source of nominal
to output: 200 Ohms
Input sensitivity for -60 dBV to +/-1 dB at 1 kHz
codec FS: +17 dBV
Gain, all settings: 20 dB to +/-1 dB 1 kHz, 50 Ohm source
-20 dB
Maximum input level: +17 dBV >/= 10 dBV THD+N </= 0.3%, 20-20 kHz, 0 dB gain
THD+N: .001% .01% at +10 dBV output, 1 kHz, 60 dB gain
Crosstalk at 1 kHz: -90 dB </= -80 dB
Crosstalk at 10 kHz: -70 dB </= -60 dB
Frequency response: 30 Hz to +0/-0.5 dB Reference 1 kHz, measured at 60 dB gain and
20 kHz with 0 dBV output
Sense Mic inputs
Nominal Limits Conditions
Source impedance: 200 Ohms 10 to 2k Ohm frequency response specification maintained
with sources over this range
Input impedance
differential: 20k Ohm +5% at 1 kHz
Equivalent input noise at 60 dB, at 60 dB, A weighted RMS, 200 Ohm source termination
at INA129 gains of 60 -127 dBV -125 dBV
dB, 40 dB and 20 dB: at 40 dB, at 40 dB,
-115 dBV -112 dBV
at 20 dB, at 20 dB,
-96 dBV -93 dBV
CMRR referred
to output: 90 dB >/= 60 dB at 1 kHz, 60 dB gain, from source of nominal
200 Ohm
Phantom power: +12V +/-1V open circuit
Input sensitivity for -60 dBV to +/-1 dB at 1 kHz
codec FS: +20 dBV
Gain, all settings: -60 dB to +/-1 dB 1 kHz, 50 Ohm source
+20 dB

8
SPECIFICATIONS
Sense Mic inputs (continued)
Nominal Limits Conditions
Maximum input level: +10 dBV >/= 7 dBV THD+N </= 0.3%, 20-20 kHz, 0 dB gain
THD+N: -84 dB </= -80 dB at +10 dBV output, 1 kHz, 60 dB gain
Crosstalk at 1 kHz: -90 dB </= -80 dB
Crossalk at 10 kHz: -70 dB </= -60 dB
Frequency response: 20 Hz to +0/-0.5 dB reference 1 kHz, measured at 60 dB gain and
20 kHz with 0 dBV output
Direct Input
Nominal Limits Conditions
Source impedance: 200 Ohms 10 to 2k Ohm frequency response specification maintained
with sources over this range
Input impedance
differential: +/> 10kOhms +/-20% at 1 kHz
CMRR referred
to output: 92 dB >/= 60 dB at 1 kHz, 20 dB gain, 200 Ohm source
impedance
Input sensitivity -20 dBV to +/-1 dB at 1 kHz
for codec FS: +17 dBV
Gain: 0 dB +/-1 dB from input connector to amplifier input stage
Maximum input level: +17 dBV >/= +17 dBV THD+N </= 0.3%, 30-20 kHz, 0 dB gain
THD+N: .001% .01% at +10 dBV output, 1 kHz, 20 dB gain
Crosstalk at 1 kHz: -90 dB </= -80 dB
Crosstalk at 10 kHz: -70 dB </= -60 dB
Frequency response: 30 Hz to +0/-0.5 dB reference 1 kHz, measured at 20 dB gain and
20 kHz with 0 dBV output
Line Outputs
Nominal Limits Conditions
Output impedance: 200 Ohms +/-1% impedance at 1 kHz, each output
terminal
Maximum output level: +17 dBV >/= +17 dBV 1 kHz, THD less than 0.1%, load 10 k Ohm,
differential

9
Line Outputs (continued)
Nominal Limits Conditions
CMRR referred
to output: 92 dB >/= 60 dB at 1 kHz, 20 dB gain, 200 Ohm source
impedance
Output noise: -90 dBV </= -85 dBV A-weighted, set for 0 dB gain
THD+N: .001% .01% at +10 dBV output, 1 kHz, 20 dB gain
Crosstalk at 1 kHz: -90 dB </= -80 dB set for 0 dB gain, no limiting, terminate the
unused input with a 50 Ohm resistor
Crosstalk at 10 kHz: -70 dB </= -60 dB
Frequency response: 30 Hz to +0/-1.0 dB reference 1 kHz, measured at 20 dB gain and
20 kHz with 0 dBV output
Turn on/off pop: 10 mV peak </= 50 mVpk as monitored by a listener, must be inaudible at
full gain using a Model 32 loudspeaker tapped
at 32W, with the unit set for no EQ and the
loudspeaker 3 feet from listener
Music on Hold (MOH)
Nominal Limits Conditions
Output impedance: 400 Ohms +/-1% impedance at 1 kHz
Maximum output level: +17 dBV >/= +17 dBV 1 kHz, THD less than 0.1%, load 10 kOhm,
differential
Output noise: -90 dBV </= -85 dBV A-weighted, set for 0 dB gain
THD+N: .001% .01% at +17 dBV output, 1 kHz, 0 dB gain
Crosstalk at 1 kHz: -90 dB </= -80 dB set for 0 dB gain, no limiting, terminate the
unused input with a 50 Ohm resistor
Crosstalk at 10 kHz: -70 dB </= -60 dB
Frequency response: 20 Hz to +0/-1.0 dB reference 1 kHz, measured at 0 dB gain and
15 kHz with 0 dB output
Turn on/off pop: 10 mV peak </= 50 mVpk as monitored by a listener, must be inaudible at
full gain using a Model 32 loudspeaker tapped
at 32W, with the unit set for no EQ and the
loudspeaker 3 feet from listener
SPECIFICATIONS

10
Power Amplifier
Nominal Limits Conditions
Power bandwidth: 30 Hz to 1% THD loaded at 25 Ohms
20 kHz
Frequency response: 30 Hz to +/-3 dB output voltage of 10 Vrms over a load
20 kHz impedance of 12.5 Ohms to 1000 Ohms
THD+N at 70.7 Vrms, .05% .1% 30 Hz to 20 kHz, 25 Ohm load, A weighted
200W:
THD+N at 70.7 Vrms, .5% 1% 7 kHz, 12.5 Ohm load, A weighted
400W:
THD+N at 100 Vrms, .05% .1% 30 Hz to 20 kHz, 25 Ohm load, A weighted
200W:
THD+N at 100 Vrms, .5% 1% 7 kHz, 12.5 Ohm load, A weighted
400W:
Sensitivity at 70V: 11 dBV +/-1 dBV
Sensitivity at 100V: 14 dBV +/-1 dBV
Gain: 26 dB +/-0.5 dB
Output noise: -70 dBV -65 dBV A-weighted with a 20 kHz filter
Crosstalk at 1 kHz: -90 dB </= -80 dB set for 0 dB gain, no limiting, terminate the
unused input with a 50 Ohm resistor
Crosstalk at 10 kHz: -70 dB </= -60 dB
Turn on/off pop: 10 mV peak </= 50 mVpk as monitored by a listener, must be inaudible at
full gain using a Model 32 loudspeaker tapped
at 32W, with the unit set for no EQ and the
loudspeaker 3 feet from listener
SPECIFICATIONS

11
PART LIST NOTES
1. This part is not normally available from Customer Service. Approval from the Field Service
Manager is required before ordering.
2. The individual parts located on the PCBs are listed in the Electrical Part List.
3. This part is critical for safety purposes. Failure to use a substitute replacement with the
same safety characteristics as the recommended replacement part might create shock, fire
and/or other hazards.
4. This part is referenced for informational purposes only. It is not stocked as a repair part. Refer
to the next higher assembly for a replacement part.
ELECTROSTATIC DISCHARGE SENSITIVE (ESDS)
DEVICE HANDLING
This unit contains ESDS devices. We recommend the following precautions when repairing,
replacing or transporting ESDS devices:
•Perform work at an electrically grounded work station.
•Wear wrist straps that connect to the station or heel straps that connect to conductive
floor mats.
•Avoid touching the leads or contacts of ESDS devices or PC boards even if properly
grounded. Handle boards by the edges only.
•Transport or store ESDS devices in ESD protective bags, bins, or totes. Do not insert
unprotected devices into materials such as plastic, polystyrene foam, clear plastic bags,
bubble wrap or plastic trays.
AMPLIFIER MODULE REPAIR INFORMATION
The Amplifier / Power Supply PCB assembly, part number 278982-001, originally used in the
E4 Series II amplifier is no longer available. This is due to the Tripath amplifier driver module
going obsolete.
For amplifier board related failures in the E4 Series II, the amplifier module assembly used in
the FreeSpace®4400 amplifier must be used as a replacement part. This requires some minor
modifications to the E4 II chassis and a kit of parts that includes adapter brackets, screws and
an EMI gasket. The entire amplifier assembly, including the heatsink, must be replaced. Refer to
service bulletin 278977-B2, located in the back of this manual as well as on the Bose®Service
web sites at http://intranet.bose.com/tsg or http://serviceops.bose.com for more information.
Required Parts:
•FreeSpace 4400 Amplifier Module Assembly, Bose®part number 301391
•FreeSpace 4400 Amplifier Module adapter kit, Bose part number 311963
Note: This procedure cannot be used on any of the E4 Series I amplifier versions. In addition,
it cannot be used on the E4 Series II Japan version, product code 036006.

12
PACKAGING PART LIST
FreeSpace®E4 Series II Business Music System (see Figure 1)
Figure 1. FreeSpace E4 Series II System Packaging View
Accessory Kit Part List (not shown)
1
2
3
4
5
6
7
8
92x
4x
REF
10
Item
Number
Description Part Number Qty. Note
- CARTON, D-C, 266856 1
- CONNECTOR, HDR, 5.08MM SP, WEID, 2P 260621-02 5
- CONNECTOR, PLUG-IN 172930-02 7
- CONNECTOR, PLUG IN, 3 POS, MALE, BLK 172930-03 2
- CONNECTOR, PLUG-IN, 4P 172930-04 4
- FEET, CHASSIS 187478 4
- LABEL, VOLTAGE SELECT 170206 1
- BAG, POLY, ZIP LOCK, 2 MIL, 3X5" 260556-0305 5
Item
Number
Description Part Number Qty. Note
1 FS INSTALLER CD FOR E4 V2.000 279435-2000 1
2 BAG, POLY, 14.38 x 9.87 x 2mil 103351 1
3 FS E4 SERIES II OWNERS GUIDE 279145-001 1
4 FS E4 SERIES II QUICK START GUIDE 279146-001 1
5 LINE CORD, 120V, 16 AWG, DET, US/CA
LINE CORD, 240V, DETACHABLE, UK/SING
LINE CORD, 230V, DETACHABLE, EURO
LINE CORD, 100V, DETACHABLE, JAPAN
LINE CORD, 240V, DETACHABLE, AUS
263453-006
173351
173352
173353
284241-006
1 3
6 FS E4 ACCESSORY KIT, ALL VERSIONS 260549 1
7 BAG, POLY, HDPE 13.5 x 35 x 9.5 x 1mil 114522 1
8 PACKING, FOAM, PU, 16 X 4 X 1 268755 4
9 PACKING, FOAM, EPS 262031 2
10 CARTON, RSC, E4 SERIES II 279496-001 1

13
MAIN PART LIST
FreeSpace®E4 Series II Business Music System (see Figure 2)
Item
Number
Description Part Number Qty. Note
1 SCREW, 6-32x.312, TAPP, FLAT, XREC 198422-005 10
2 COVER, CHASSIS 259122 1
3 FAN, DC, 80 X 80 X 25, 24V, 35 CFM 260576-2435 1
4 NUT, HEX, 6-32, KEPS 100413-3 5
5 NUT, HEX, 5/16-18 103236-3118 1
6 WASHER, LOCK, SPRING, HELICL, 5/16 196095-14 1
7 XFMR, PWR, TOROID, DUALSHIELD;
includes cup washer and rubber pad 279678-001 1 3
8 CHASSIS, WELDMENT 279473 1
9 INLET ASSY, AC, W/CAPS, SURG 260575-1 1
10 SCREW PLATE, IEC CONNECTOR 260560-1 1
11 VOL SEL, INSERT, 100/120/220/240 260578-4801 1
12 FUSE, 3AG, SLO-BLO, 6.30 AMP
(100/110V UNITS) 260593-35 1 3
FUSE, 5 X 20MM, SLO-BLO, 3.15A
(230/240V UNITS) 177311-03150
13 FUSE DRAWER, 1P, GREY, 6.3 X 32MM
(100/110V UNITS) 260579-17 1 3
FUSE DRAWER, 1P, BLK, 5 X 20MM
(230/240V UNITS) 260579-06
14 SWITCH, AC POWER, DPST, 16A, 250V 260600 1 3
15 SCREW, TAPP, #4-40 x .5, PAN, XREC 170284-08 2
16 SCREW, JACK, RS-232 PORT 260564 2
17 SCREW, 6-32, MACH, FLAT, XREC 190623-004 10
18
A
B
C
D
E
PCB ASSY, E4 SERIES II, DSP / UI
CONSISTS OF:
AUTOVOLUME PCB
WALLPLATE SENSE PCB
DSP/UI PCB
LED PCB
FLASH MEMORY PCB
278979-001 1
19 SCREW, 6-32, PH, INT, SEM 181248-004 9
20 SUPPORT, PCB, POST, MINI, 1.5" 260594-24 4
21 HARNESS, 20P, DSP / MIC SENS 260511-1 1
22 HARNESS, 16P, DSP / REM OUT 260512-1 1
23 HARNESS, 16P, DSP / USER INT 260513-1 1
24 HARNESS, 34P, PS / PA / DSP 260514-1 1
25 AMP MODULE ASSY, FS 4400
(Must be used with the adapter kit below.
Refer to service bulletin 278977-B2,
located in the back of this manual for
more information.)
301391 1
26 STANDOFF, HEX, THD, 6-32, .25 X 2.50 260584-625040 3
27 HARNESS ASSY, XFMR / PS 260610 2
28 NUT, STND HEX, WASHER 100413-2 3
29 HEATSINK, ALUMINUM, PS / PA - 1
- CLIP, CABLE, ADHESIVE BACKED 191437 1
- ADAPTER KIT, FS 4400 AMP MODULE 311963 1

14
Figure 2. FreeSpace®E4 Series II Business Music System Exploded View
1 10x
2
3
45x
5
6
7
8
9
10
11
12
13
14
15
16
2x
4
17
2x
18
10x
19 4x
20
2x
23
272x
283x
22
18
21
4x
18
24
25
19 3x
26 3x
29
A
B
C
D
Note: Flash Memory PCB,
18E, is not shown.
18
19

15
Figure 3. E4 Series II Power Supply / Power Amplifier PCB Module
MAIN PART LIST
E4 Series II Power Supply / Power Amplifier PCB Module (see Figure 3)
1
2
3
4
5
8x
4x
8x
3x
Upper Amp PCB
(channels 1 and 2)
Lower Amp PCB
(channels 3 and 4)
Item
Number
Description Part Number Qty. Note
1 INSULATOR, CER, AL OX, TO 247 260607 8
2 HEATSINK, AL, 4.84 X 3.4" 259112 1
3 SCREW, 6-32, PH, INT, SEM 181248-008 4
4 CLIP, MAX, HEAT XFER, AAVID, #23 260601-23 8
5 SUPPORT, PCB, POST, MINI, 9/16" 260594-09 3
- SOCKET, .100 SP X 8.5MM, 1 X 11 260652-A11F 4
- FUSE CLIP, 5MM 178548 12 3

16
ELECTRICAL PART LIST
Resistors
Digital Signal Processor / User Interface PCB Assembly
Reference
Designator
Description Part Number Note
R101 1.10K, 0805, 1/10W, 1% 133625-1101 4
R102 10.0K, 0805, 1/10W, 1% 133625-1002 4
R107 10 OHM, 2512, 1W, 5% 181895-10R0 4
R108 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R109 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R110 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R111 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R112 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R113 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R114 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R115 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R116 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R117 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R118 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R119 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R120 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R121 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R122 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R123 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R124 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R125 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R126 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R127 562 OHM, 0805, 1/10W, 1% 133625-5620 4
R128 1.10K, 0805, 1/10W, 1% 133625-1101 4
R131 10.0K, 0805, 1/10W, 1% 133625-1002 4
R132 33 OHM, 2512, 1W, 5% 181895-33R0 4
R133 10.0K, 0805, 1/10W, 1% 133625-1002 4
R134 10.0K, 0805, 1/10W, 1% 133625-1002 4
R135 10.0K, 0805, 1/10W, 1% 133625-1002 4
R136 100K, 0805, 1/10W, 1% 133625-1003 4
R137 22.1 OHM, 0805, 1/10W, 1% 133625-22R1 4
R138 22.1 OHM, 0805, 1/10W, 1% 133625-22R1 4
R139 JUMPER, CHIP, 0805 133627 4
R140 JUMPER, CHIP, 0805 133627 4
R201 1.10K, 0805, 1/10W, 1% 133625-1101 4
R202 JUMPER, CHIP, 0805 133627 4
R203 1.00K, 0805, 1/10W, 1% 133625-1001 4
R205 2.00K, 0805, 1/10W, 1% 133625-2001 4
R206 10.0K, 0805, 1/10W, 1% 133625-1002 4
R208 13.7K, 0805, 1/10W, 1% 133625-1372 4
R213 220 OHM, 2512, 1W, 5% 181895-2200 4
R214 1.10K, 0805, 1/10W, 1% 133625-1101 4
R215 1.00K, 0805, 1/10W, 1% 133625-1001 4
R216 2.00K, 0805, 1/10W, 1% 133625-2001 4
R217 10.0K, 0805, 1/10W, 1% 133625-1002 4
R219 13.7K, 0805, 1/10W, 1% 133625-1372 4

17
ELECTRICAL PART LIST
Resistors (continued)
Digital Signal Processor / User Interface PCB Assembly
Reference
Designator
Description Part Number Note
R220 JUMPER, CHIP, 0805 133627 4
R226 20.0K, 0805, 1/10W, 1% 133625-2002 4
R227 22.1K, FILM, 0805, 1% 133625-2212 4
R228 30.1K, 0805, 1/10W, 1% 133625-3012 4
R229 49.9K, 0805, 1/10W, 1% 133625-4992 4
R230 10.0K, 0805, 1/10W, 1% 133625-1002 4
R231 11.0K, 0805, 1/10W, 1% 133625-1102 4
R232 43.2K, 0805, 1/10W, 1% 133625-4322 4
R234 49.9K, 0805, 1/10W, 1% 133625-4992 4
R235 15.0K, 0805, 1/10W, 1% 133625-1502 4
R236 15.0K, 0805, 1/10W, 1% 133625-1502 4
R237 22.1K, FILM, 0805, 1% 133625-2212 4
R240 1.10K, 0805, 1/10W, 1% 133625-1101 4
R241 9.09K, 0805, 1/10W, 1% 133625-9091 4
R242 20.0K, 0805, 1/10W, 1% 133625-2002 4
R243 22.1K, FILM, 0805, 1% 133625-2212 4
R244 30.1K, 0805, 1/10W, 1% 133625-3012 4
R245 49.9K, 0805, 1/10W, 1% 133625-4992 4
R246 10.0K, 0805, 1/10W, 1% 133625-1002 4
R247 11.0K, 0805, 1/10W, 1% 133625-1102 4
R248 43.2K, 0805, 1/10W, 1% 133625-4322 4
R250 49.9K, 0805, 1/10W, 1% 133625-4992 4
R251 15.0K, 0805, 1/10W, 1% 133625-1502 4
R252 15.0K, 0805, 1/10W, 1% 133625-1502 4
R253 22.1K, FILM, 0805, 1/10W, 1% 133625-2212 4
R256 1.10K, 0805, 1/10W, 1% 133625-1101 4
R257 9.09K, 0805, 1/10W, 1% 133625-9091 4
R258 1.10K, 0805, 1/10W, 1% 133625-1101 4
R259 JUMPER, CHIP, 0805 133627 4
R260 1.00K, 0805, 1/10W, 1% 133625-1001 4
R262 2.00K, 0805, 1/10W, 1% 133625-2001 4
R263 10.0K, 0805, 1/10W, 1% 133625-1002 4
R265 13.7K, 0805, 1/10W, 1% 133625-1372 4
R270 1.10K, 0805, 1/10W, 1% 133625-1101 4
R271 JUMPER, CHIP, 0805 133627 4
R272 1.00K, 0805, 1/10W, 1% 133625-1001 4
R274 2.00K, 0805, 1/10W, 1% 133625-2001 4
R275 10.0K, 0805, 1/10W, 1% 133625-1002 4
R277 13.7K, 0805, 1/10W, 1% 133625-1372 4
R282 20.0K, 0805, 1/10W, 1% 133625-2002 4
R283 22.1K, FILM, 0805, 1/10W, 1% 133625-2212 4
R284 30.1K, 0805, 1/10W, 1% 133625-3012 4
R285 49.9K, 0805, 1/10W, 1% 133625-4992 4
R286 10.0K, 0805, 1/10W, 1% 133625-1002 4
R287 11.0K, 0805, 1/10W, 1% 133625-1102 4
R288 43.2K, 0805, 1/10W, 1% 133625-4322 4

18
ELECTRICAL PART LIST
Resistors (continued)
Digital Signal Processor / User Interface PCB Assembly
Reference
Designator
Description Part Number Note
R290 49.9K, 0805, 1/10W, 1% 133625-4992 4
R291 15.0K, 0805, 1/10W, 1% 133625-1502 4
R292 15.0K, 0805, 1/10W, 1% 133625-1502 4
R293 22.1K, FILM, 0805, 1/10W, 1% 133625-2212 4
R296 1.10K, 0805, 1/10W, 1% 133625-1101 4
R297 9.09K, 0805, 1/10W, 1% 133625-9091 4
R298 20.0K, 0805, 1/10W, 1% 133625-2002 4
R299 22.1K, FILM, 0805, 1/10W, 1% 133625-2212 4
R300 30.1K, 0805, 1/10W, 1% 133625-3012 4
R301 49.9K, 0805, 1/10W, 1% 133625-4992 4
R302 10.0K, 0805, 1/10W, 1% 133625-1002 4
R303 11.0K, 0805, 1/10W, 1% 133625-1102 4
R304 43.2K, 0805, 1/10W, 1% 133625-4322 4
R306 49.9K, 0805, 1/10W, 1% 133625-4992 4
R307 15.0K, 0805, 1/10W, 1% 133625-1502 4
R308 15.0K, 0805, 1/10W, 1% 133625-1502 4
R309 22.1K, FILM, 0805, 1/10W, 1% 133625-2212 4
R312 1.10K, 0805, 1/10W, 1% 133625-1101 4
R313 9.09K, 0805, 1/10W, 1% 133625-9091 4
R314 100K, 0805, 1/10W, 1% 133625-1003 4
R315 100 OHM, 0805, 1/10W, 1% 133625-1000 4
R316 100K, 0805, 1/10W, 1% 133625-1003 4
R317 100 OHM, 0805, 1/10W, 1% 133625-1000 4
R318 100K, 0805, 1/10W, 1% 133625-1003 4
R319 100 OHM, 0805, 1/10W, 1% 133625-1000 4
R320 100K, 0805, 1/10W, 1% 133625-1003 4
R321 100 OHM, 0805, 1/10W, 1% 133625-1000 4
R322 33 OHM, 2512, 1W, 5% 181895-33R0 4
R323 33 OHM, 2512, 1W, 5% 181895-33R0 4
R324 100K, 0805, 1/10W, 1% 133625-1003 4
R325 100K, 0805, 1/10W, 1% 133625-1003 4
R326 100K, 0805, 1/10W, 1% 133625-1003 4
R327 100K, 0805, 1/10W, 1% 133625-1003 4
R328 JUMPER, CHIP, 0805 133627 4
R329 JUMPER, CHIP, 0805 133627 4
R330 JUMPER, CHIP, 0805 133627 4
R331 JUMPER, CHIP, 0805 133627 4
R332 100 OHM, 0805, 1/10W, 1% 133625-1000 4
R333 100 OHM, 0805, 1/10W, 1% 133625-1000 4
R401 200 OHM, 0805, 1/10W, 1% 133625-2000 4
R402 16 OHM, 2512, 1W, 5% 181895-16R0 4
R403 200 OHM, 0805, 1/10W, 1% 133625-2000 4
R404 402 OHM, 0805, 1/10W, 1% 133625-4020 4
R429 10.0K, 0805, 1/10W, 1% 133625-1002 4
R430 1.00K, 0805, 1/10W, 1% 133625-1001 4
R501 18.2K, 0805, 1/10W, 1% 133625-1822 4

19
ELECTRICAL PART LIST
Resistors (continued)
Digital Signal Processor / User Interface PCB Assembly
Reference
Designator
Description Part Number Note
R502 182 OHM, 3ES, 0805, 1/10W, 1% 133625-1820 4
R503 5.11K, 0805, 1/10W, 1% 133625-5111 4
R504 7.87K, 0805, 1/10W, 1% 133625-7871 4
R505 1.27K, 0805, 1/10W, 1% 133625-1271 4
R506 5.49K, 0805, 1/10W, 1% 133625-5491 4
R507 2.00K, 0805, 1/10W, 1% 133625-2001 4
R508 2.00K, 0805, 1/10W, 1% 133625-2001 4
R509 182 OHM, 3ES, 0805, 1/10W, 1% 133625-1820 4
R510 100 OHM, 0805, 1/10W, 1% 133625-1000 4
R511 7.87K, 0805, 1/10W, 1% 133625-7871 4
R513 100K, 0805, 1/10W, 1% 133625-1003 4
R514 5.11K, 0805, 1/10W, 1% 133625-5111 4
R515 18.2K, 0805, 1/10W, 1% 133625-1822 4
R516 18.2K, 0805, 1/10W, 1% 133625-1822 4
R517 10.0 OHM, 0805, 1/10W, 1% 133625-10R0 4
R518 182 OHM, 3ES, 0805, 1/10W, 1% 133625-1820 4
R519 5.11K, 0805, 1/10W, 1% 133625-5111 4
R520 7.87K, 0805, 1/10W, 1% 133625-7871 4
R521 1.27K, 0805, 1/10W, 1% 133625-1271 4
R522 5.49K, 0805, 1/10W, 1% 133625-5491 4
R523 2.00K, 0805, 1/10W, 1% 133625-2001 4
R524 2.00K, 0805, 1/10W, 1% 133625-2001 4
R525 182 OHM, 3ES, 0805, 1/10W, 1% 133625-1820 4
R526 7.87K, 0805, 1/10W, 1% 133625-7871 4
R528 100K, 0805, 1/10W, 1% 133625-1003 4
R529 5.11K, 0805, 1/10W, 1% 133625-5111 4
R530 18.2K, 0805, 1/10W, 1% 133625-1822 4
R531 18.2K, 0805, 1/10W, 1% 133625-1822 4
R532 5.11K, 0805, 1/10W, 1% 133625-5111 4
R533 7.87K, 0805, 1/10W, 1% 133625-7871 4
R534 5.11K, 0805, 1/10W, 1% 133625-5111 4
R537 2.00K, 0805, 1/10W, 1% 133625-2001 4
R538 2.00K, 0805, 1/10W, 1% 133625-2001 4
R539 100 OHM, 0805, 1/10W, 1% 133625-1000 4
R540 7.87K, 0805, 1/10W, 1% 133625-7871 4
R541 5.11K, 0805, 1/10W, 1% 133625-5111 4
R544 5.11K, 0805, 1/10W, 1% 133625-5111 4
R545 18.2K, 0805, 1/10W, 1% 133625-1822 4
R546 18.2K, 0805, 1/10W, 1% 133625-1822 4
R547 10.0 OHMS, 0805, 1/10W, 1% 133625-10R0 4
R548 5.11K, 0805, 1/10W, 1% 133625-5111 4
R549 7.87K, 0805, 1/10W, 1% 133625-7871 4
R550 5.11K, 0805, 1/10W, 1% 133625-5111 4
R553 2.00K, 0805, 1/10W, 1% 133625-2001 4
R554 2.00K, 0805, 1/10W, 1% 133625-2001 4
R555 7.87K, 0805, 1/10W, 1% 133625-7871 4

20
ELECTRICAL PART LIST
Resistors (continued)
Digital Signal Processor / User Interface PCB Assembly
Reference
Designator
Description Part Number Note
R556 5.11K, 0805, 1/10W, 1% 133625-5111 4
R557 5.11K, 0805, 1/10W, 1% 133625-5111 4
R558 18.2K, 0805, 1/10W, 1% 133625-1822 4
R561 4.75K, 0805, 1/10W, 1% 133625-4751 4
R562 5.90K, 0805, 1/10W, 1% 133625-5901 4
R563 1.10K, 0805, 1/10W, 1% 133625-1101 4
R566 100K, 0805, 1/10W, 1% 133625-1003 4
R568 25.5K, 0805, 1/10W, 1% 133625-2552 4
R571 100K, 0805, 1/10W, 1% 133625-1003 4
R572 10.0K, 0805, 1/10W, 1% 133625-1002 4
R573 25.5K, 0805, 1/10W, 1% 133625-2552 4
R575 100K, 0805, 1/10W, 1% 133625-1003 4
R576 10.0K, 0805, 1/10W, 1% 133625-1002 4
R577 25.5K, 0805, 1/10W, 1% 133625-2552 4
R579 100K, 0805, 1/10W, 1% 133625-1003 4
R580 10.0K, 0805, 1/10W, 1% 133625-1002 4
R581 1.91K, 0805, 1/10W, 1% 133625-1911 4
R582 25.5K, 0805, 1/10W, 1% 133625-2552 4
R583 10.0K, 0805, 1/10W, 1% 133625-1002 4
R584 47.5K, 0805, 1/10W, 1% 133625-4752 4
R585 301 OHM, 0805, 1/10W, 1% 133625-3010 4
R586 301 OHM, 0805, 1/10W, 1% 133625-3010 4
R587 301 OHM, 0805, 1/10W, 1% 133625-3010 4
R588 301 OHM, 0805, 1/10W, 1% 133625-3010 4
R589 10.0K, 0805, 1/10W, 1% 133625-1002 4
R590 26.7K, 0805, 1/10W, 1% 133625-2672 4
R591 301 OHM, 0805, 1/10W, 1% 133625-3010 4
R592 301 OHM, 0805, 1/10W, 1% 133625-3010 4
R593 301 OHM, 0805, 1/10W, 1% 133625-3010 4
R594 301 OHM, 0805, 1/10W, 1% 133625-3010 4
R599 10.0K, 0805, 1/10W, 1% 133625-1002 4
R600 10.0K, 0805, 1/10W, 1% 133625-1002 4
R601 10.0K, 0805, 1/10W, 1% 133625-1002 4
R603 49.9 OHM, 0805, 1/10W, 1% 133625-49R9 4
R604 49.9 OHM, 0805, 1/10W, 1% 133625-49R9 4
R605 10.0K, 0805, 1/10W, 1% 133625-1002 4
R608 10.0K, 0805, 1/10W, 1% 133625-1002 4
R609 100 OHM, 0805, 1/10W, 1% 133625-1000 4
R610 100 OHM, 0805, 1/10W, 1% 133625-1000 4
R611 100 OHM, 0805, 1/10W, 1% 133625-1000 4
R612 10.0K, 0805, 1/10W, 1% 133625-1002 4
R614 10.0K, 0805, 1/10W, 1% 133625-1002 4
R615 1.00K, 0805, 1/10W, 1% 133625-1001 4
R619 1.00K, 0805, 1/10W, 1% 133625-1001 4
R623 1.00K, 0805, 1/10W, 1% 133625-1001 4
R624 1.0M, 0805, 1/10W, 1% 133625-1004 4