Eden WTX-500 User manual

NEVER COMPROMISE TM
WTX500 Service Manual
Part Number: 4031.006

NEVER COMPROMISETM
2
WTX500 Service Manual
2
Table of Contents
Section 1 Overview Page 3
Section 2 Specifications Page 4
Section 3 Schematic Page 5
Section 4 PC Board Layout Page 6-7
Section 5 Parts List Page 8-11

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WTX500 Service Manual
Section 1
System Overview
At 4.3 lbʼs (less than 2 Kg) the WTX500 is the true original lightweight bass amplifier. Not only is
this little amp easy to transport, but with a maximum power output of 500W at 4Ω, this amplifier
is more than capable of holding its own in a live band situation. So while the rest of the band
struggles to set their gear up and drag flight cases in from the van, you can simply take the
WTX500 out from your gig bag and either plug into a cabinet or use the DI output and go
straight into the front of house!
1. Eden Logo - Illuminates to indicate that power is applied and the unit is switched on.
2. Gain - Controls the preamp level of your amplifier. Pull to activate the Pad circuit.
3. Set Level LED - Indicates when the auto-compressor would be active if not bypassed.
4. Enhance - Eden tailored EQ modifier, adjust this to shape your overall EQ. Pull to bypass the
internal compressor circuit.
5. Bass - Use this control to select the amount of cut or boost you require in the low frequency
range. Pull to engage the Bass Boost circuit to acheive added low end.
6. Mid - Use this control to select the amount of cut or boost you require in the low frequency
range. Pull to select where the mid frequency range will be cut or boosted.
7. High - Use this control to select the amount of cut or boost you require in the low frequency
range. Pull to move the DI send to the post EQ setting.
8. Limit LED - Indicates when the amplifier has reached it’s maximum output.
9. Master - Controls the overall level of your amplifier.
10. Input - Connect your instrument here.
11. Mute - Press to activate the mute circuit. The LED illuminates when the mute circuit is active.
12. Send - Take your signal for an external processor or effects chain here.
13. Return - Return your signal for an external processor or effects chain here.
14. Aux L - Input your left auxiliary input signal here.
15. Aux R - Input your right auxiliary input signal here.
16. Tuner - Connect your rack or pedal tuner here.
13
2 4 5 6 7 9
8
10 12 13 14 15 16
11

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WTX500 Service Manual
Section 2
Specifications
Output Power: 500 watts @ 4 ohms (45vrms) 10% THD
Input: -44.5dB
Aux In: -19.5dB
Return: -25.5dB
Tuner Out: -43.5dB
Send: -25.5dB
Bandwidth: 35Hz - 20KHz (+/-3dB)
Phones Output: 100mv @ 8 ohms
Weight: 4.3lbs
Dimensions: 8”W x 2.5”H x 9”D
Below Tests conditions: Input 1KHz Square wave, controls all centered except the control being tested.
Enhance Control
Mid Control (550Hz)
all controls centered
Mid Control (2.2KHz) High Control
Enhance Control Bass, Low Control

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WTX500 Service Manual
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
D D
C C B B
A A
MODEL :
TITLE :
PN :
Version :
Sheet
Printed 01/04/2013
1 1of
WTX500
Preamp Section
1
5301.028
Tar PN :
Drawn :
Checked :
DH DH
Ring
Sleeve
Tip
JK1
40
VR1 W100K
Q1 J112
R13 2K7
R7 150R
R11 1M
R15 3K3
-15V
Q2
MPSA56
R16 1K R17 1K
2 3
1
U1A
TL072
R4 2K2
C7 33pF
R10 1M
R14 330K
+
C5 2u2F
40
VR2 W100K
2 3
1
U2A
TL072
6 5
7
U1B
TL072
R25 68K
R31 68K
R27 27K
R28 18K
R26 18K
R29 27K
R30 100K
Input
Gain
Enhance
C12 4n7F
C13 22nF C14 2n0F
R1 1Meg
Q3
MPSA56
R12 10K
C2 470pF Q4
MPSA56
R19 10K
R21 100K
R20 10K
C8 10nF
Q7
MPSA06
-15V
LED1
R23 3K3
C15 150pF
Pad
+15V
Ring
Sleeve
Tip
JK3
Tuner Out
6 5
7
U8B TL072
R93 22K
D98 1N4148
R94 47K
C54 10nF
2 3
1
U8A TL072
+
C1 2u2F
C53 47pF
Q6 J174
R4A 1Meg
CR1 1N4148
R2 1Meg
+
C3 10uF
R5 1K
CR2 1N4148
+
C4 2u2F
R6
100K
R8 33K R9
11K
+
C6 2u2F
VR1 SW
+
C10 10uF
R18 10K
Q5 J112
CR4 1N4148
+
C11 2u2F
CR3
1N4148
R22 100K
-15V
Ring
Sleeve
Tip
J5A
K1
CR5 1N4148
C9 10nF
-15V
1 2 3
P2
1 2 3
P2H Header 3
Footswitch
+15V
1 2 3 4
P7H
Header 4H
1 2 3 4
P7
N/C
VR5 SW
S6 Mute
R99 3M3
+15V
R188 6K8
LED10 Mute
-15V
C13A 820pF
N/C
1
2
3
4
5
6
P3H Header 6H
1
2
3
4
5
6
P3
2 3
1
U4A TL072
CR8 1N4148
R51 12K
C31 22pF
40
VR1A W10K
6 5
7
U4B
TL072
R52 12K
R53 680R
R54 680R
+
C33 10uF
+
C32 10uF
R56 100K
R55 100K
S1 Grnd Lift
1
2
3
4
P1H Header 4H
1
2
3
4
P1
40
VR4 W10K
R92 22K
R96 12K
Q99 J174
R95 47K
C55 4n7F
R97 12K
Q98 J174
+
C52 4u7F
+
C17 1uF
R32 15K
40
VR3 W100K
R34 15K
C21 100pF
R33 56K
Bass
Middle
C18 27nF C19 2n2F
R35 8K2
40
VR5 W100K
R91 220K
Treble
+15V
R199 10K R198 100K
C198 10nF
VR2 SW
Comp On/Off
VR4 SW
+ C22 4u7F
2 3
1
U3A TL072
6 5
7
U3B TL072
Q8 MPSA56
R37 1K
Q9
MPSA56
R38 1K
CR6
1N4148
+
C23 10uF
R39 22K
-15V
OP1
R36 2K4
R40 22K
R43 47K C24 47pF R42 12K
R45 6K8
+
C25 0.47uF
VR3 SW
R44 390K
+
C26 0.47uF
R41 10K
+
C27 1uF
R46 3K3
C28 100nF
C29
100nF CR7
1N4148
R47 15K
R48 180K
Ring
Sleeve
Tip
J5
Ring
Sleeve
Tip
J4
Ring
Sleeve
Tip
J3
Ring
Sleeve
Tip
J2
2 3
1
U5A TL072
6 5
7
U5B TL072 R66 10K
R64 10K
CR12
1N4148
-15V
CR11
1N4148
+15V
+
C36 10uF
+
C35 10uF
R62 1Meg R59 1Meg
R60 47K R61 47K
R68 10K
+
C34 10uF
R58 1Meg
R50 1Meg
Send
ReturnRight Aux In
Left Aux In
R57 22K
CR10
1N4148
CR9
1N4148
+15V
-15V
R65 10K
R63 10K
R67 10K
+
C50 3u3F
R98 1Meg
1 2 3 4 5 6
P5
1 2 3 4 5 6
P5H
R49 1K
+
C30 10uF
-15V+15V
40
VR6 W100K
R88 12K
R89 51K
+
C51 3u3F
2 3
1
U6A TL072
R90 8K2
R69 18K C37 68pF +
C38 2u2F
R73 18K
6 5
7
U6B TL072
Q10 J112
20K VR7
C40 68pF R76 100K
R71 1Meg R70
150R
R72 1Meg
R75 330K
-15V
+
C39 2u2F
R74 3K3
Q11
MPSA56
Q12 MPSA56
R87 2K7
R77 3K3
R79 8K2
R78 10K Q13
MPSA56
C42 10nF
R81 100K
Q14 MPSA56
-15V
+
C43 10uF
R83 3K3LED2
Limit
2 3
1
U7A TL072
+
C41 10uF
R80 8K2
CR15
1N4148
R82 12K
6 5
7
U7B TL072
1
2
3
4
5
6
P6H
R86 1K
+
C45 10uF
R85 1K
R84 12K
+
C44 10uF
-15V
+15V
1
2
3
4
5
6
P6
1 2 3 4 5 6 7 8
P102
1 2 3
P103
Vin Vout
GND
7815
Vin Vout
GND
7915
100nF 100nF
100nF 100nF
Q1A J174
R7A 47K R6A 22K
+15V
+
C1A 47uF
Ring
Sleeve
Tip
J3A
Ring
Sleeve
Tip
J4A
1 2 3 4
P101
Ring
Sleeve
Tip
J2A
Phones
Outputs
R3A 56R R4B 56R
+
C2A 47uF
R2A 270R
Power Module
+15V
R100 3K9
1
2
P100H
1
2
P100
-15V
LEDF100
1 2
P8
To Fan
+
35V C56
1000uF
-15V
R69A 270R 2W
+15V
Enable

NEVER COMPROMISETM 6
WTX500 Service Manual
Section 4
Preamp PC Board Layout

NEVER COMPROMISETM 7
WTX500 Service Manual
Section 4
Preamp PC Board Layout

NEVER COMPROMISETM 8
WTX500 Service Manual
Item # Part no. Material Name Specifications Qty Unit Remark
1KITS-70022 Button EG1195-ND 2 PCS
2ASSY-70034 Power Amp Module ICEPOWER125ASX2 1 PCS
31-01-000671 Resistor, Carbon Film 22!1/4W ±5% 2 PCS
4KITS-70176 Capacitor, Ceramic 0.1UF 50V ±10% 4 PCS
5KITS-70216 IC, Voltage Regulator NJM7815A TO-220F 1PCS
6KITS-70217 IC, Voltage Regulator NJM7915A TO-220F 1PCS
7KITS-70485 AC Inlet HF-301 1 PCS
81-04-000490 Neutrik Jack, Speaker HP-06-EP 1 PCS
9KITS-70293 Power Cord EL202+EL701A VDE H05VV-F 0.75/3C 6FT BK 1 PCS
10 KITS-70296 Power Cord EL206+EL701A SAA H05VV-F 0.75/3C 6FT BK 1 PCS
11 KITS-70299 Power Cord EL210+EL701A UK H05VV-F 0.75/3C 6FT BK 1 PCS
12 KITS-70303 Power Cord EL302+EL701A SVT 18AWG/3C 6FT BK 1 PCS
13 KITS-70490 Power Cord EL406+EL701A VCTF 0.75/3C 6FT BK 1 PCS
14 1-07-000054 Switch, Power RF-1003-BRG3E2X1T 4 Pin 1 PCS
15 1-11-000021 Fan DC24V 0.12A XH 1007 22A 300MM 1 PCS 60x60x15mm
16 1-11-000022 Fan Cover, Chrome 60*60mm 1 PCS
17 1-12-000789 Chassis WTX500-2 LED 1 PCS
18 1-12-000790 Top Cover WTX500-3 028 1 PCS
19 KITS-70346 Screw, Machine M3*10 2 PCS
20 KITS-70352 Nut M4 2 PCS
21 KITS-70356 Washer, Tooth 4"2PCS
22 KITS-70357 Screw, Machine English 6#*8BM 10 PCS
23 KITS-70363 Screw, English 6#*3 4 PCS
24 KITS-70365 Screw, Tapping English 3.5*9BM 2 PCS Used to mount the XLR jack.
25 KITS-70381 Screw, Machine English 4#*8BM 4 PCS
26 KITS-70384 Screw, English 4#*3 4 PCS
27 KITS-70387 Screw, Machine English 4#*8FM 6 PCS
28 KITS-70389 Screw, Tapping English 3.2#*12.5FA 2 PCS
29 1-16-000461 Screw, Machine English 6*25BM 4 PCS
30 1-17-000497 Shield WTX500-4 1 PCS
31 KITS-70404 Rubber Feet SF-006 3M 4 PCS
32 KITS-70405 Knob RKN-42 7 PCS
33 1-24-000066 Plexiglass logo WT-3 EDEN 14mm, 22*22mm 1 PCS
34 KITS-70457 Cable Ties 3*100mm 20 PCS
35 ASSY-70016 PC Board, Rear Panel E110092 1 PCS
36 KITS-70002 Potentiometer RA16N1-W10K-L15KC/DCS/41PC/NS/GN 1 PCS VR1 DI Output Level
37 1-01-000514 Resistor, Power 270!5 Watt ±5% 1 PCS R2
38 KITS-70045 Resistor, Carbon Film 0!1/4 Watt ±5% 1 PCS R1
39 1-01-001517 Resistor, Carbon Film 56!1/2 Watt ±5% 2 PCS R3,4
40 KITS-70164 Capacitor, Electrolytic 100uF 35vdc ±20% 8"*11mm 1 PCS C2
MODEL: WTX500 PARTS LIST

NEVER COMPROMISETM 9
WTX500 Service Manual
Item # Part no. Material Name Specifications Qty Unit Remark
41 KITS-70186 Capacitor, Ceramic 0.01uF 1Kvdc +80/-20% 1 PCS C1
42 1-04-000151 Jack, XLR DY-04 90°/CT3-06M-EP 1 PCS J1
43 KITS-70290 Jack, 1/4" P/6180 LJB0661-G06/K6J50-AA-6-G 4 PCS
J2,3,4,5 Spkr Outs, Phones,
Footswitch
44 KITS-70321 Switch, Push KAN2-Z2 1 PCS S1
45 ASSY-70022 PC Board, Upper Preamp E110090 WTX500 1 PCS
46 KITS-70024 Opto-Coupler LCR0203-A 1 PCS OP1
47 KITS-70003 Potentiometer RA16N1-W100K-L15KC/41PC/NS/DCS/GN 1 PCS VR6 Master
48 KITS-70051 Resistor, Carbon Film 150!1/4 Watt ±5% 2 PCS R7,70
49 KITS-70056 Resistor, Carbon Film 680!1/4 Watt ±5% 1 PCS R24
50 KITS-70058 Resistor, Carbon Film 1K!1/4 Watt ±5% 6 PCS R16,17,37,38,85,86
51 1-01-000706 Resistor, Carbon Film 2.4K!1/4 Watt ±5% 1 PCS R36
52 KITS-70064 Resistor, Carbon Film 2.7K!1/4 Watt ±5% 2 PCS R13,87
53 KITS-70065 Resistor, Carbon Film 3.3K!1/4 Watt ±5% 6 PCS R15,23,46,74,77,83
54 KITS-70070 Resistor, Carbon Film 6.8K!1/4 Watt ±5% 1 PCS R45
55 KITS-70071 Resistor, Carbon Film 8.2K!1/4 Watt ±5% 4 PCS R35,79,80,90
56 KITS-70072 Resistor, Carbon Film 10K!1/4 Watt ±5% 7 PCS R12,18,19,20,41,78,R199
57 KITS-70073 Resistor, Carbon Film 12K!1/4 Watt ±5% 6 PCS R42,82,84,88,96,97
58 KITS-70075 Resistor, Carbon Film 15K!1/4 Watt ±5% 3 PCS R32,34,47
59 KITS-70076 Resistor, Carbon Film 18K!1/4 Watt ±5% 4 PCS R26,28,69,73
60 KITS-70078 Resistor, Carbon Film 22K!1/4 Watt ±5% 4 PCS R39,40,93,92
61 KITS-70080 Resistor, Carbon Film 27K!1/4 Watt ±5% 2 PCS R27,29
62 KITS-70081 Resistor, Carbon Film 33K!1/4 Watt ±5% 1 PCS R8
63 KITS-70083 Resistor, Carbon Film 47K!1/4 Watt ±5% 3 PCS R43,94,95
64 1-01-000736 Resistor, Carbon Film 51K!1/4 Watt ±5% 1 PCS R89
65 KITS-70084 Resistor, Carbon Film 56K!1/4 Watt ±5% 1 PCS R33
66 KITS-70085 Resistor, Carbon Film 68K!1/4 Watt ±5% 2 PCS R25,31
67 KITS-70087 Resistor, Carbon Film 100K!1/4 Watt ±5% 7 PCS R6,21,22,30,76,81,R198
68 KITS-70090 Resistor, Carbon Film 180K!1/4 Watt ±5% 1 PCS R48
69 KITS-70092 Resistor, Carbon Film 220K!1/4 Watt ±5% 1 PCS R91
70 KITS-70093 Resistor, Carbon Film 330K!1/4 Watt ±5% 2 PCS R14,75
71 KITS-70094 Resistor, Carbon Film 390K!1/4 Watt ±5% 1 PCS R44
72 KITS-70097 Resistor, Carbon Film 1Meg!1/4 Watt ±5% 5 PCS R4A,10,11,71,72
73 KITS-70105 Resistor, Carbon Film 3.9K!1/2 Watt ±5% 1 PCS R100
74 1-01-001025 Resistor, Carbon Film 11K!1/4 Watt ±5% 1 PCS R9
75 KITS-70129 Potentiometer RA16S5-W100K-15KC/NS/GN 4 PCS
VR1,2,3,5 Gain, Enhance, Bass,
Treble
76 KITS-70138 Trim Pot TG805SC-B25K/GN 1 PCS VR7
77 KITS-70144 Potentiometer RA16S5-W10K-15KC/NS/GN 1 PCS VR4 Middle
78 KITS-70158 Capacitor, Electrolytic NP 10uF 100vdc ±20% 8"*12mm 2 PCS C44,45
79 KITS-70164 Capacitor, Electrolytic 100uF 35vdc ±20% 8#*11mm 2 PCS C48,46
MODEL: WTX500
PARTS LIST

NEVER COMPROMISETM 10
WTX500 Service Manual
Item # Part no. Material Name Specifications Qty Unit Remark
80 KITS-70166 Capacitor, Electrolytic 0.47uF 50vdc ±20% 5!*11mm 2 PCS C25,26
81 KITS-70167 Capacitor, Electrolytic 1uF 50vdc ±20% 5!*11mm 2 PCS C17,27
82 KITS-70168 Capacitor, Electrolytic 2.2uF 50vdc ±20% 5!*11mm 6 PCS C4,5,6,11,38,39
83 KITS-70169 Capacitor, Electrolytic 3.3uF 50vdc ±20% 5!*11mm 1 PCS C51
84 KITS-70170 Capacitor, Electrolytic 4.7uF 50vdc ±20% 5!*11mm 2 PCS C22,52
85 KITS-70179 Capacitor, Polyester Film 0.0022uF 100vdc ±5% 1 PCS C19
86 KITS-70186 Capacitor, Ceramic 0.01uF 1Kvdc +80/-20% 3 PCS C8,70,71
87 KITS-70188 Capacitor, Ceramic 47pF 1Kvdc ±10% 2 PCS C24,53
88 KITS-70189 Capacitor, Ceramic 100pF 1Kvdc ±10% 1 PCS C21
89 KITS-70190 Capacitor, Ceramic 150pF 1Kvdc ±10% 1 PCS C15
90 KITS-70196 Capacitor, Metalized Film 0.1uF 250vdc ±10% P=10 MER 1 PCS C9
91 KITS-70197 Capacitor, Polyester Film 0.027uF 100vdc ±10% 1 PCS C18
92 1-02-000501 Capacitor, Ceramic 33pF 1Kvdc ±10% 1 PCS C7
93 KITS-70200 Capacitor, Electrolytic 10uF 100vdc ±20% 6!*11mm 4 PCS C10,23,41,43
94 KITS-70201 Capacitor, Ceramic 820pF 1Kvdc ±10% 1 PCS C13A
95 KITS-70202 Capacitor, Polyester Film 0.0047uF 100vdc ±5% 2 PCS C12,55
96 KITS-70203 Capacitor, Polyester Film 0.01uF 100vdc ±5% 1 PCS C54
97 KITS-70204 Capacitor, Polyester Film 0.022uF 100vdc ±5% 1 PCS C13
98 KITS-70205 Capacitor, Polyester Film 0.1uF 100vdc ±5% 4 PCS C28,29,47,49
99 KITS-70210 Capacitor, Metalized Film 0.01uF 100vdc ±5% 1 PCS C198
100 1-02-000599 Capacitor, Ceramic 0.01uF 50vdc +80/-20% 1 PCS C42
101 1-02-000731 Capacitor, Ceramic 0.0022uF 1Kvdc ±20% 1 PCS C14
102 KITS-70213 Capacitor, Ceramic 68pF 1Kvdc ±10% 2 PCS C37,40
103 KITS-70215 IC NJM072D 5 PCS U2,3,6,7,8
104 KITS-70219 LED, Square LT6U13-AH-UEC1 5"1PCS LEDF100
105 KITS-70223 LED 3!LT1U74-43-M18-S05 /3R4S1TR702 1 PCS LED2
106 KITS-70224 LED 3!LT1US4-43-S06 1 PCS LED1
107 KITS-70225 FET J112 3 PCS Q1,5,10
108 KITS-70236 Diode 1N4004 1 PCS CR5
109 KITS-70238 Diode 1N4148 8 PCS CR1,2,3,4,6,7,15,D98
110 KITS-70244 Transistor MPSA56 TO-92 8PCS Q2,3,4,8,9,11,12,13
111 KITS-70245 Transistor MPSA06 TO-92 2PCS Q7,14
112 KITS-70247 FET J174 TO-92 3PCS Q6,98,99
113 KITS-70255 IC OPA2604AP 1 PCS U1
114 KITS-70260 Socket, IC 8 Pin / Dip 6 PCS U1,2,3,6,7,8
115 KITS-70324 Relay DSY2Y-S-224L/G5V-2-24VDC/RS-24L 1 PCS K1
116 ASSY-70023 PC Board, Lower Preamp E110091 WTX500 1 PCS
117 1-01-000096 Resistor, Power 270#2 Watt ±5% 1 PCS R69
118 KITS-70056 Resistor, Carbon Film 680#1/4 Watt ±5% 2 PCS R53,54
MODEL: WTX500
PARTS LIST