Behringer ULTRABASS BXL1800A User manual

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ULTRABASS BXL1800A
Service Manual
Created: 14 March 2015
180-Watt 2-Channel Bass Amplifier with Original
BUGERA 12" Aluminum-Cone Speaker, FBQ Spectrum
Analyzer, Compressor and Ultrabass Processor
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
PCB Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Exploded Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

ULTRABASS BXL1800A
Specifications
- Powerful 180-Watt 2-channel bass amplifier with wedge-shaped cabinet
- Original BUGERA 12" Hard Attack aluminum-cone speaker
- Clean channel with dedicated Gain control
- Distortion channel with dedicated Gain, Shape and Level controls
- Ultra-musical, active 7-band graphic EQ with FBQ Spectrum Analyzer
- Revolutionary "see what you play" FBQ frequency indicator for instant sound shaping
- Switchable Ultrabass subharmonics processor for unbelievable low-end power
- Integrated Compressor smoothes out volume peaks when playing dynamic slaps
- Musical opto-limiter for ultimate volume without distortion
- Dual footswitch for channel select and Ultrabass function included
- Separate Headphone output—perfect for quiet practicing
- Balanced XLR DI and Line outputs for direct connection to your mixing console
- CD input allows you to play along to your favorite music
- Dedicated FX Insert for external effects devices (stomp boxes, rack effects, etc.)
- High-quality components and exceptionally rugged construction ensure long life
- Conceived and designed by BEHRINGER Germany

PCB SchematicULTRABASS BXL1800A
Page 3

PCB SchematicULTRABASS BXL1800A
Page 4

PCB SchematicULTRABASS BXL1800A
Page 5

PCB SchematicULTRABASS BXL1800A
Page 6

Parts ListULTRABASS BXL1800A
Page 7
Hi Pcb Assemblies
Quantity Unit S.Sku M.Sku Description Reference Designators Notes
1 1.0000 PC A05-00000-05730 PCB ASSEMBLY;LPA1180;REV:J;HAND INSERT;NO:926020
2 1.0000 PC A05-36500-05738 PCB ASSEMBLY;LPA1180;BXL1800;REV:J;HAND INSERT;NO:926020
3 1.0000 PC Q05-36501-04147 A05-36501-04147 PCB ASSEMBLY;BXL1800;PCB:01;FRONT;REV:E;HAND
INSERT;NO:902030
4 1.0000 PC A05-36502-04161 PCB ASSEMBLY;BXL1800;PCB:02;REAR;REV:E;HAND
INSERT;NO:903030
Cable
Quantity Unit S.Sku M.Sku Description Reference Designators Notes
1 0.2720 M A74-00000-00710 WIRE;RAW FLAT
CABLE;UL2651;AWG:28;POLES:10;GRAY;PIN1:RED;PITCH:1mm27
2 0.0000 PC A74-00050-26710 CABLE;FLAT;P2mm54;LENGTH:260mm;AWG:28;FC3;+10/-
0mm;POLES:10
3 1.0000 PC A74-90050-26710 CABLE;FLAT;P2mm54;LENGTH:260mm;ZEE;AWG:28;FC3;+10/-
0mm;ZEE;POLES:10
[BXL1800:02: {1.0}(X7)]
4 1.0000 PC A81-68030-66502 WIRE
HARNESS;LENGTH:680mm;AWG:26;P:2mm;SHS;POLES:6;SHIELD ON
PIN6;COLORED
5 1.0000 PC A88-00000-82574 CABLE;SPEAKER;350 MM;AWG:18;UL1015;3.96 MM;2;RED;JS1121-
2P;5.2mm AMP; LOCK TYPE
6 1.0000 PC Q89-50031-04316 A89-50031-04316 FOOTSWITCH
CABLE;FS112;LENGTH:5000mm;POLES:3;COLOR:BLK;SPEC.NO:04316
7 1.0000 PC Q76-15212-03119 A76-15212-03119 CABLE;AC-CORD;W/POLYBAG;LENGTH:152cm;H05VV-F 3G
0.75MM2;VERSION;EU;SPEC.NO:03119
(EU)
8 1.0000 PC Q76-00000-13573 A76-00000-13573 CABLE;AC-CORD;3;AR;1500 MM;Plug + Connector:321+730;H05VV-F
3G0.75
(AR)
9 1.0000 PC Q76-15042-05624 A76-15042-05624 CABLE;AC-CORD;W/POLYBAG;LENGTH:150cm;H05VV-
F3G0.75MM2;VERSION;UK;SPEC.NO:05624
(UK)
10 1.0000 PC A76-18050-06505 CABLE;AC-CORD;LENGTH:180cm;VERSION:SAA;PLUG:HE105
ISOLATED;SAA H05VV-F 3x0.75mm2;CONN.HP-3;PANYU
(SAA)
11 1.0000 PC Q76-00000-05305 A76-00000-05305 CABLE;AC-CORD;3;BR;1500 MM;Plug + Connector:375+730;H05VV-F
3G0.75
(BR)
12 1.0000 PC Q76-18050-47490 A76-18050-47490 CABLE;AC-CORD;LENGTH:180cm;VERSION:SAA;PLUG:HE105
ISOLATED;SAA H05VV-F 3x0.75mm2;CONN.HP-3;SPEC.NO:47490
(SAA)
13 1.0000 PC Q76-15222-06417 A76-15222-06417 CABLE;AC-
CORD;W/POLYBAG;LENGTH:152cm;AWG:18;VERSION;UL;SPEC.NO:0
6417
(UL)
14 1.0000 PC Q76-15032-55649 A76-15032-55649 CABLE;AC-CORD;CLASS
II;W/POLYBAG;JAPAN;LENGTH:150cm;POLES:3;APPROVAL:PSE;JS15S
3 + VCTF 3x0.75mm2 + V1528
(JP, HM, SH)

Parts ListULTRABASS BXL1800A
Page 8
Capacitor
Quantity Unit S.Sku M.Sku Description Reference Designators Notes
1 2.0000 PC CAP E;4.7 mF;50 V;20 %;22X35;10 MM;SNAP-IN [LPA1180:00: {2.0}(C5,C8)] *NOT available in DP
2 2.0000 PC CAP E;220uF;4V;PITCH:2mm5;5mm x 11mm;VERTICAL 12.7-15-9mm [P0365:01: {2.0}(C9,C24)] *NOT available in DP
3 1.0000 PC CAP E;47uF;10V;PITCH:2mm5;5mm x 11mm;VERTICAL 12.7-15-9mm [LPA1180:00: {1.0}(C18)] *NOT available in DP
4 1.0000 PC CAP E;100uF;10V;PITCH:2mm5;5mm x 11mm;VERTICAL 12.7-15-
9mm
[P0365:01: {1.0}(C27)] *NOT available in DP
5 1.0000 PC CAP E;1uF;25V;PITCH:2mm5;5mm x 11mm;VERTICAL 12.7-15-9mm [P0365:01: {1.0}(C22)] *NOT available in DP
6 8.0000 PC CAP E;10uF;25V;PITCH:2mm5;5mm x 11mm;VERTICAL 12.7-15-9mm [P0365:01: {7.0}(C3,C8,C14-C15,C21,C25-C26)] *NOT available in DP
7 4.0000 PC CAP E;47uF;25V;PITCH:2mm5;5mm x 11mm;VERTICAL 12.7-15-9mm [P0365:01: {4.0}(C6,C13,C18,C23)] *NOT available in DP
8 1.0000 PC CAP E;470uF;25V;PITCH:5mm;10mm x 16mm;VERTICAL 12.7-15-
9mm
[P0365:01: {1.0}(C16)] *NOT available in DP
9 1.0000 PC CAP E;1mF;25V;PITCH:5mm;10mm x 20mm;VERTICAL 12.7-15-9mm [LPA1180:00: {1.0}(C11)] *NOT available in DP
10 1.0000 PC CAP E;10uF;35V;PITCH:2mm5;5mm x 11mm;VERTICAL 12.7-15-9mm [LPA1180:00: {1.0}(C10)] *NOT available in DP
11 1.0000 PC CAP E;220nF;50V;PITCH:2mm5;5mm x 11mm;VERTICAL 12.7-15-
9mm
[P0365:01: {1.0}(C7)] *NOT available in DP
12 4.0000 PC CAP E;1uF;50V;PITCH:2mm5;5mm x 11mm;VERTICAL 12.7-15-9mm [P0365:01: {3.0}(C5,C10,C19)] *NOT available in DP
13 1.0000 PC CAP E;4uF7;50V;PITCH:2mm5;5mm x 11mm;VERTICAL 12.7-15-9mm [BXL1800:01: {1.0}(C17)] *NOT available in DP
14 5.0000 PC CAP E;10uF;50V;PITCH:2mm5;5mm x 11mm;VERTICAL 12.7-15-9mm [P0365:01: {3.0}(C2,C4,C20)] *NOT available in DP
15 2.0000 PC CAP E;47uF;63V;PITCH:3mm5;8mm x 14mm;PRECUT:3mm2 -
0/+0mm2
[BXL1800:01: {2.0}(C11-C12)] *NOT available in DP
16 1.0000 PC CAP CER;47pF;50V;10%;PITCH:5mm;DISC;;VERTICAL 12.7-15-9mm [LPA1180:00: {1.0}(C20)] *NOT available in DP
17 1.0000 PC CAP CER;100nF;50V;20%;PITCH:5mm;DISC;VERTICAL 12.7-15-9mm [LPA1180:00: {1.0}(C3)] *NOT available in DP
18 1.0000 PC CAP CER;10pF;50V;10%;SMT603 [BXL1800:01: {1.0}(C59)] *NOT available in DP
19 3.0000 PC CAP CER;20pF;50V;20%;SMT603 [BXL1800:01: {3.0}(C47-C48,C81)] *NOT available in DP
20 1.0000 PC CAP CER;39pF;50V;5%;COG(NPO);SMT603 [BXL1800:01: {1.0}(C83)] *NOT available in DP
21 3.0000 PC CAP CER;47pF;50V;5%;COG(NPO);SMT603 [BXL1800:01: {3.0}(C44,C67,C70)] *NOT available in DP
22 11.0000 PC CAP CER;100pF;50V;20%;SMT603 [BXL1800:01: {6.0}(C49-C50,C60-C61,C80,C84)] *NOT available in DP
23 1.0000 PC CAP CER;220pF;50V;10%;SMT603 [BXL1800:01: {1.0}(C45)] *NOT available in DP
24 5.0000 PC CAP CER;3nF3;50V;10%;SMT603 [BXL1800:01: {5.0}(C57-C58,C68-C69,C82)] *NOT available in DP
25 1.0000 PC CAP CER;47pF;50V;C0G;5%;SMD805 [LPA1180:00: {1.0}(C28)] *NOT available in DP
26 3.0000 PC CAP CER;330pF;50V;10%;SMT805 [LPA1180:00: {3.0}(C25-C27)] *NOT available in DP
27 2.0000 PC CAP CER;10nF;50V;10%;SMT805 [BXL1800:01: {2.0}(C55,C65)] *NOT available in DP
28 3.0000 PC CAP CER;15nF;50V;10%;SMT805 [BXL1800:01: {3.0}(C33,C72-C73)] *NOT available in DP
29 7.0000 PC CAP CER;33nF;50V;10%;SMT805 [BXL1800:01: {7.0}(C38-C39,C63-C64,C75-C77)] *NOT available in DP
30 15.0000 PC CAP CER;100nF;50V;X7R;10%;SMT805 [BXL1800:01: {13.0}(C40-C43,C51-
C53,C56,C62,C66,C74,C78-C79)]
*NOT available in DP
31 2.0000 PC CAP CER;220nF;50V;10%;SMT805 [BXL1800:01: {2.0}(C34,C71)] *NOT available in DP
32 4.0000 PC CAP CER;330nF;50V;10%;SMT805 [BXL1800:01: {4.0}(C35-C37,C54)] *NOT available in DP
33 1.0000 PC CAP MYL;47nF;50V;10%;PITCH:5mm5;DIPPED;PRECUT:3mm1 +/-
0mm5
[BXL1800:01: {1.0}(C1)] *NOT available in DP
34 1.0000 PC CAP FILM;220nF;63V;MPF;10%;PITCH:5mm;BOX;VERTICAL 12.7-15-
9mm
[LPA1180:00: {1.0}(C19)] *NOT available in DP
35 4.0000 PC CAP FILM;47nF;100V;MPF;10%;PITCH:5mm;BOX;PRECUT:3mm1 +/-
0mm5
[LPA1180:00: {4.0}(C12-C15)] *NOT available in DP
36 3.0000 PC CAP E;10uF;25V;PITCH:2mm5;5mm x 11mm;105C;VERTICAL 12.7-15-
9mm
[LPA1180:00: {3.0}(C4,C6,C9)] *NOT available in DP
37 2.0000 PC CAP E;100uF;35V;PITCH:3mm5;8mm x 12mm;PRECUT:3mm2 -
0/+0mm2;105C
[LPA1180:00: {2.0}(C1-C2)] *NOT available in DP

Parts ListULTRABASS BXL1800A
Page 9
Circuit Protector
Quantity Unit S.Sku M.Sku Description Reference Designators Notes
1 1.0000 PC B22-02512-50001 FUSE;500mA;250V;SLOW BLOW;L-TYPE;5mm x 20mm (EU, UL, JP, UK, SAA, BR, AR,
HM, SH)
2 1.0000 PC B22-02512-50001 FUSE;500mA;250V;SLOW BLOW;L-TYPE;5mm x 20mm
3 1.0000 PC R22-01513-31501 B22-01513-31501 FUSE;3A15;250V;SLOW BLOW;H-TYPE;5mm x 20mm (EU, UK, SAA, AR)
4 1.0000 PC R22-01513-31501 B22-01513-31501 FUSE;3A15;250V;SLOW BLOW;H-TYPE;5mm x 20mm
5 1.0000 PC R22-01516-30001 B22-01516-30001 FUSE;6A3;250V;SLOW BLOW;H-TYPE;5mm x 20mm (UL, JP, BR, HM, SH)
Connector
Quantity Unit S.Sku M.Sku Description Reference Designators Notes
1 2.0000 PC R84-00000-01620 B84-00000-01620 AMP TERMINAL;BRASS W TIN;7205A-BS-2
2 2.0000 PC R84-22000-06018 B84-22000-06018 CRIMP TERMINAL;PITCH:3mm96;AWG18-22;A3963TOP-2
3 12.0000 PC R84-25016-06014 B84-25016-06014 CRIMP TERMINAL;PITCH:2mm0;AWG24-30;A2008TOP-2
4 2.0000 PC R84-30000-06293 B84-30000-06293 JACKET;FOR 205 TERMINAL.;DIA:4mm
5 1.0000 PC R84-30046-39242 B84-30046-39242 CONNECTOR;AMP CONN TERMINAL;MATERIAL:PAPER
FIBRE;QUADRUPLE;(BWF38703003-TERMINAL-REVA.DWG)
6 3.0000 PC B84-42050-00155 CRIMP CONNECTOR;LUG;INNER DIA:4mm3;AWG 14-18;WIRE
MOUNT;STRAIGHT
7 1.0000 PC R95-01320-03303 B95-01320-03303 CONNECTOR;XLR;SOCKET;MALE;STRAIGHT;POLES:3 [BXL1800:02: {1.0}(X1)]
8 1.0000 PC R84-39000-33065 B84-39000-33065 CONNECTOR;AWG 14-16;CLOSED ENDED;W/ NYLON66
COVER;APPROVALS:UL-CSA
(EU, UL, UK, SAA, BR, AR)
9 1.0000 PC R84-39000-33065 B84-39000-33065 CONNECTOR;AWG 14-16;CLOSED ENDED;W/ NYLON66
COVER;APPROVALS:UL-CSA
Diode
Quantity Unit S.Sku M.Sku Description Reference Designators Notes
1 4.0000 PC DIODE;1N4007;DO41 [LPA1180:00: {4.0}(D7-D10)] *NOT available in DP
2 4.0000 PC DIODE;1N5402;DO201AD;TEMIC OR FC [LPA1180:00: {4.0}(D11-D14)] *NOT available in DP
3 19.0000 PC DIODE;LL4148;LL34;TEMIC OR FC [BXL1800:01: {11.0}(D1-D11)] *NOT available in DP
4 4.0000 PC DIODE;ZD15V0;BZX85C15;DO41 [LPA1180:00: {4.0}(D3-D6)] *NOT available in DP
5 1.0000 PC DIODE;ZMM09V1;SMD1206 [LPA1180:00: {1.0}(D23)] *NOT available in DP
6 2.0000 PC DIODE;ZENER;24V;5W;1N5359B;CASE 17 [LPA1180:00: {2.0}(D1-D2)] *NOT available in DP

Parts ListULTRABASS BXL1800A
Page 10
Hardware
Quantity Unit S.Sku M.Sku Description Reference Designators Notes
1 180.0000 PC NAIL;CROWN:2mm2;WIDTH:1mm27;THICKNESS:1mm0;LENGTH:25
mm;18-GAUGE (0.49*0.40) FINISH;GALVANIZED
*NOT available in DP
2 4.0000 PC CABLE TIE;NYLON;4in;COLOR: *NOT available in DP
3 0.6000 G THERM-GREASE;COLOR:WHT;SPEC.NO:09286 *NOT available in DP
4 0.7000 G SCREWLOCK;SPEC.NO:01090 *NOT available in DP
5 6.0000 PC HEX. NUT;INNER DIA;M4mm;SURFACE:ZINC *NOT available in DP
6 18.0000 PC T-NUT;INNER DIA;M5mm;W/PRONG;SURFACE:ZINC/BLACK *NOT available in DP
7 4.0000 PC HEX. NUT;FOR JACK;M
3/8in;HEXWRENCH:11mm;THICKNESS:2mm4;SURFACE:NICKEL/SILV
ER
*NOT available in DP
8 2.0000 PC OCT. NUT;FOR
JACK;3/8in;OCTWRENCH:14.5mm;THICKNESS:3.5mm;SURFACE:NICK
EL/SILVER
*NOT available in DP
9 2.0000 PC F87-01000-12070 PAD;RUBBER;6mm*2mm5;COLOR:BLK;DWG.NO:12070;(R14-GUITAR-
RUBBERPAD-REVB.DWG)
10 5.0000 PC SCREW;M3mm*5mm;HEAD:PAN;INSERT:PHILIPS
REC.;SURFACE:SILVER ZINC
*NOT available in DP
11 2.0000 PC SCREW;M3mm*5mm;HEAD:PAN;INSERT:PHILIPS
REC.;SURFACE:BLACK/ZINC
*NOT available in DP
12 2.0000 PC SCREW;M3mm*6mm;HEAD:PAN;INSERT:PHILLIPS
REC.;SURFACE:BLACK/ZINC
*NOT available in DP
13 6.0000 PC SCREW;M3mm*6mm;PITCH:0mm5;HEAD:FLAT;INSERT:PHILIPS
REC.;SURFACE:BLACK/ZINC
*NOT available in DP
14 4.0000 PC SCREW;BT3mm*8mm;HEAD:PAN;INSERT:PHILIPS
REC.;SURFACE:ZINC
*NOT available in DP
15 3.0000 PC SCREW;BT3mm*8mm;HEAD:PAN;INSERT:PHILLIPS
REC.;SURFACE:BLACK/ZINC
*NOT available in DP
16 4.0000 PC SCREW;M03mm*08mm;HEAD:PAN SPRING WASHER;INSERT:PHILIPS
REC.;SURFACE:SILVER/ZINC
*NOT available in DP
17 2.0000 PC SCREW;M3mm*10mm;HEAD:PAN;INSERT:PHILIPS
REC.;SURFACE:BLACK/ZINC
*NOT available in DP
18 10.0000 PC SCREW;M4mm*10mm;HEAD:BINDING;INSERT:PHILIPS
REC.;SURFACE:SILVER/ZINC
*NOT available in DP
19 16.0000 PC SCREW;A4mm*16mm;HEAD:OVAL;INSERT:PHILIPS
REC.;SURFACE:BLACK/ZINC
*NOT available in DP
20 6.0000 PC SCREW;A4mm*19mm;HEAD:PAN WASHER;INSERT:PHILLIPS
REC.;SURFACE:BLACK/ZINC
*NOT available in DP
21 10.0000 PC SCREW;M4mm*30mm;HEAD:OVAL;INSERT:PHILIPS
REC.;SURFACE:BLACK/ZINC
*NOT available in DP
22 2.0000 PC SCREW;M5mm*23mm;HEAD:PAN;INSERT:PHILIPS
REC.;SURFACE:BLACK/ZINC
*NOT available in DP
23 8.0000 PC SCREW;M5mm*25mm;HEAD:PAN;INSERT:PHILIPS
REC.;SURFACE:BLACK/ZINC
*NOT available in DP
24 8.0000 PC SCREW;M5mm*25mm;HEAD:PAN 8mm;INSERT:PHILIPS
REC.;SURFACE:BLACK/ZINC
*NOT available in DP
25 1.0000 PC F89-32000-03521 INSULATION SHEET;GLIMMER;35mm x 34mm;HOLE
DIA:2(3mm2);HOLE OFFSET:30mm;THICKNESS:0mm15;(P0742-
GLIMMER_SHEET-REVA.DWG)
26 2.0000 PC V89-32023-00182 F89-32023-00182 INSULATION SHEET;GLIMMER;18mm x 23mm;NO
HOLE;THICKNESS:0mm15
27 1.0000 PC SILICA GEL;MASS;30g;SPEC.NO:30QB-BB2001-4 *NOT available in DP
28 2.0000 PC SPRING;CYLINDRICAL;FS112;6mm*14mm8;CARBON STEEL;DWG.
NO:04288;(R14-FCB1010-SPRING-REVA.DWG)
*NOT available in DP
29 0.0540 M SHRINKING TUBE;INNER DIA;1mm;SPEC.NO:43217 *NOT available in DP