Dada Electronics Revision/Upgrade Manuals

• Dada Electronics DC Protection/Delay Installation Instructions V1.2 [565 KB]
• Dada Electronics Dual Mono PSU Installation Instructions V2.7 [640 KB]
• Dada Electronics Quad 33 Potentiometer wiring [55 KB]
• Quad 303 Converting the output stage to NPN/PNP V 2.1 [282 KB]
• Quad 34 All Models Upgrade/Revision Manual V3.7 [2,9 MB]
• Quad 405 and 405-2 Upgrade/Revision Manual V2.0 [2,0 MB]
• Quad 44 All Models Upgrade/Revision Manual V2.6 [1,4 MB]
• Quad 50E and D Upgrade/Revision manual V 1.3 [899 KB]
• Quad 606 MK I, II, 707 and 909 Upgrade/Revision Manual V2.6 [1,5 MB]
• Quad 66 Pre Upgrade/Revision Manual V2.4 [2,8 MB]
• Quad 303 Revision manual [2,0 MB]
• Quad 306 Revision manual [1,3 MB]
• Quad 33 Revision manual [3,4 MB]

Quad Service Manuals

• Quad 303 Illustrated Service Supplement [9,1 MB]
• Quad 303 Service Manual [2,3 MB]
• Quad 306 Service Manual [1,3 MB]
• Quad 33 Service Manual [1,0 MB]
• Quad 34 Service Manual V1.2 [6,9 MB]
• Quad 405 and 405-2 Service Manual 10-12-2010 [5,7 MB]
• Quad 44 MKI Tone Control Mod [369 KB]
• Quad 44 Service Manual All Serial Numbers 1.0 [1,8 MB]
• Quad 606 Service Manual V2.0 [1,7 MB]
• Quad 66 CD Service manual [710 KB]
• Quad 66 Preamp Service Manual V1.2 [5,3 MB]
• Quad 67 DACT Service Manual [1,9 MB]
• Quad 909 Service manual [468 KB]
• Quad 99 Preamp Service Manual [722 KB]
• Quad ESL 57 Service Data [216 KB]
• Quad ESL 63 Service Data 2.0 [5,8 MB]
• Quad FM1 Service Manual [8,7 MB]
• Quad FM3 Service Manual [2,4 MB]
• Quad FM4 Fitting instructions QF4PCB7 processor chip [800 KB]
• Quad FM4 Service Manual [4,2 MB]
• Quad II 40a Service Manual [1,6 MB]
• Quad QCII Service information [1,3 MB]

Quad User Manuals

• Quad 22 Instruction Manual [2,2 MB]
• Quad 240 User Manual plus schematic [2,2 MB]
• Quad 303 Instruction book [412 KB]
• Quad 306 User Manual [3,0 MB]
• Quad 33 Instruction Manual [2,3 MB]
• Quad 34 Instruction Book [3,1 MB]
• Quad 405 Instruction Book [3,9 MB]
• Quad 405 MK2 Instruction Book [472 KB]
• Quad 44 Instruction Book [8,3 MB]
• Quad 50D - 50E Operating Instructions [1,6 MB]
• Quad 510 first version Instruction Manual [2,0 MB]
• Quad 510 second version User Manual [1,1 MB]
• Quad 520 User Manual [1,0 MB]
• Quad 520f User Manual [1,3 MB]
• Quad 606 Instruction Book [14,7 MB]
• Quad 66 FM User Manual [1,6 MB]
• Quad 66 Mk1 User manual [467 KB]
• Quad 66 Mk2 User manual [2,1 MB]
• Quad 66 Programming Instructions [402 KB]
• Quad 66 series handleiding [876 KB]
• Quad 67 CD User manual [1,7 MB]
• Quad 77 Compact Disc Player instruction book [310 KB]
• Quad 77 Power Amplifier Instruction Book [1,6 MB]
• Quad 909 User Manual [834 KB]
• Quad 99 Series Owner Instructions [1,8 MB]
• Quad 99 User Manual [7,7 MB]
• Quad AM 3 Instruction Manual [16,5 MB]
• Quad ESL 57 Instruction Book [3,1 MB]
• Quad ESL 63 Instruction Book [1,4 MB]
• Quad Elite series user manual [2,3 MB]
• Quad FM2 Instruction Booklet [2,5 MB]
• Quad FM3 Instruction Booklet [3,9 MB]
• Quad FM4 Instruction Book [1,0 MB]
• Quad II Classic User Manual [252 KB]
• Quad Multiplex Decoder Instruction book [1,9 MB]

Quad Schematics

• Quad 22 Control Unit 11402 ISS 1 Schematic [141 KB]
• Quad 303 MK1 M12056 iss 3 Schematic [191 KB]
• Quad 303 MK1 M12056 iss 5 Schematic [495 KB]
• Quad 303 MK2 M12160 iss 1 Schematic [143 KB]
• Quad 303 improved wiring Quad 303 improved wiring [4,2 MB]
• Quad 306 Schematic [1,8 MB]
• Quad 33 M12065 iss 2 Schematic [9,0 MB]
• Quad 33 M12065 iss 6 Schematic [9,5 MB]
• Quad 33 M12065 iss 7 Schematic [9,2 MB]
• Quad 33 Schematic all versions [11,2 MB]
• Quad 34 MK2 Schematic [275 KB]
• Quad 405 MK1 PCB 12368 ISS 9 Schematic [163 KB]
• Quad 405 MK2 PCB 12333 ISS 8 Schematic [2,1 MB]
• Quad 405 balanced Input modification [115 KB]
• Quad 44 Schematics - Above Serial 23000 [992 KB]
• Quad 50E Schematic [1,1 MB]
• Quad 510 M12828 iss 8 Schematic [433 KB]
• Quad 510 M12845 iss 1 Schematic [683 KB]
• Quad 520 Schematic [977 KB]
• Quad 520f pcb 12828-7 Schematic [1,3 MB]
• Quad 520f pcb 12828-8 Schematic [1,3 MB]
• Quad 606 Schematic [3,4 MB]
• Quad 707 Schematic [1,9 MB]
• Quad 77 Pre Amp Schematics [1,4 MB]
• Quad 909 Schematic [633 KB]
• Quad 99 CDP DAC & Output-stage [2,4 MB]
• Quad AM2 Schematic [528 KB]
• Quad AM3 Schematics [4,3 MB]
• Quad ESL63 Schematic [477 KB]
• Quad FM1 Schematic [262 KB]
• Quad FM2 Schematic [387 KB]
• Quad FM3 MK1 Schematic (Below Serial N° 5885) [818 KB]
• Quad FM3 MK2 Schematic (Above Serial N° 5885) [805 KB]
• Quad FM4 MK2 Schematic [169 KB]
• Quad II Control Unit Schematic [239 KB]
• Quad II Power Amplifier Schematic [329 KB]
• Quad Multiplex Decoder Schematic [96 KB]

Other Quad Documents

• Current Dumping Analysys - H.S. Malvar WW 1981 [1,0 MB]
• Current Dumping - Does it really work - J. Vanderkooy S. Lipshitz WW 1978 [427 KB]
• Current Dumping Review - M. Mcloughlin WW 1983 [7,7 MB]
• Current Dumping explained by Peter Walker 1975 [864 KB]
• Evolutionary Audio. J.L. Hood WW 1989 (current dumping explained by P. Baxandall) [11,4 MB]
• Feedforward Error Correction in power amplifiers AES 1980 - J. Vanderkooy S. Lipshitz [9,1 MB]
• QUADaardig (NL) Current Dumping explained (c) Elektor [2,1 MB]
• Quad 1981 Brochure [26,7 MB]
• Quad 303 Monoblock Instructions [1,0 MB]
• Quad 34 and 44 Disc Modules [681 KB]
• Quad 405, 303 II compared 1978 Wireless World [220 KB]
• Quad 405 Mains Transformer Connections [1,7 MB]
• Quad 405 Monoblock Instructions [871 KB]
• Quad 405 Upgrade Instructions Bernd Ludwig V 14 2010 [491 KB]
• Quad 44 Brochure (UK) [1,1 MB]
• Quad 50 E 17 volt wirering [89 KB]
• Quad 50E balanced input connection [104 KB]
• Quad 510 Output Cards [1,5 MB]
• Quad 67 Tray gear replacement [985 KB]
• Quad 77 FM Tuner Datasheet [321 KB]
• Quad 77 Integrated Amplifier Datasheet [490 KB]
• Quad Advertisement 8-ties (UK) [10,6 MB]
• Quad Brochure 8-ties (Dansk) [13,2 MB]
• Quad ESL 57 Revision by Joerg Baar [671 KB]
• Quad ESL 57 Revision by Sheldon D. Stokes Part 1 [6,9 MB]
• Quad ESL 57 Revision by Sheldon D. Stokes Part 2 [544 KB]
• Quad ESL 57 Stacking information [391 KB]
• Quad ESL Theory PJ Walker 1955 [6,7 MB]
• Quad ESL57 Brochure (1978) [166 KB]
• Quad FM3 Brochure (UK) [509 KB]
• Quad II Mods - Chris Beeching, 1992 [919 KB]
• Quad Parts List 1981 [6,2 MB]
• Quad Production History and Serial Numbers [17 KB]
• Quad / Rogers LS5-8 Crossover schematic [808 KB]
• Quad - Rogers LS5-8 Design Report by BBC 1979 [239 KB]
• Reviving the Quad 22/11 amplifier - Haden Boardman [270 KB]
• The First 50 Years of Quad (strongly recommended!) [16,4 MB]
• Transtec (NL) 1981 Quad Pricelist (in Gulden) [168 KB]
• Transtec (NL) 1985 Quad Pricelist (in Gulden) [457 KB]
• Using a CD-Player with the 33 Control Unit (Quad paper) [294 KB]

Velleman Kit Manuals

• K2570 Manual (En) [238 KB]
• K2649 Manual (En) [484 KB]
• K4003 Manual (En) [381 KB]
• K4102 Manual (En) [292 KB]
• K4700 Manual (En) [321 KB]
• K6714 Manual (En) [571 KB]
• K7300 Manual (En) [601 KB]
• K8012 Manual (En) [343 KB]
• K8028 Manual (En) [1,3 MB]
• K8055 Manual (En) [1,3 MB]
• K8056 Manual (En) [497 KB]
• K8059 Manual (En) [169 KB]
• K8071 Manual (En) [288 KB]
• K8084 Manual (En) [1,2 MB]
• MK111 Assembly manual [166 KB]
• MK163 Assembly Manual [352 KB]

Component Datasheets

• 2KBB Diode series - International Rectifier [152 KB]
• 2N3773 - ON Semiconductor [93 KB]
• 74HC126 - Philips [45 KB]
• AD797 Datasheet Analog Devices [1,0 MB]
• BAT86 Datasheet Philips [57 KB]
• BC Components MKT Datasheet [273 KB]
• BC107 BC108 BC109 Datasheet Philips [54 KB]
• BC549 BC550 Datasheet NXP [232 KB]
• BC556 / 557 / 558 / 559 / Datasheet Fairchild [46 KB]
• BHC Aerovox Capacitors Datasheet [4,9 MB]
• BS08D Datasheet Powerex [189 KB]
• BS170 Fairchild Datasheet [518 KB]
• BSX19 - BSX20 Datasheet Micro Electronics [102 KB]
• BSX21 Datasheet Micro Electronics [16 KB]
• Bourns PTA-series Slide Potentiometers [194 KB]
• CD40102 Datasheet Texas Instruments [833 KB]
• CD4066 Datasheet Fairchild [112 KB]
• CD4504B Texas Instruments Datasheet [749 KB]
• CNY17 Optocoupler Datasheet Vishay [118 KB]
• DACT CT3 Audio input selector Datasheet [200 KB]
• DACT CT4 Audio Balance Control Datasheet [131 KB]
• DaDa Quad 405 transformer connections [47 KB]
• DaDa Quad 606 707 909 transformer connections [1,3 MB]
• HEF4016 Datasheet Philips [79 KB]
• KA317 Datasheet Fairchild [50 KB]
• KA337 Datasheet Fairchild [37 KB]
• L387A Voltage Regulator Datasheet [84 KB]
• LF353 Texas Instruments [332 KB]
• LF357N Datasheet [401 KB]
• LM 314-324-334 Current source datasheet [759 KB]
• LM1036 Datasheet [750 KB]
• LM158 - LM258 - LM358 Datasheet ST [272 KB]
• LM311 Datasheet ST [206 KB]
• LM386 Datasheet National Semiconductor [264 KB]
• LM393 Datasheet ST [251 KB]
• LME49710 Datasheet National Semiconductor [817 KB]
• LME49740 Datasheet National Semiconductor [464 KB]
• MBRF10H100CT Taiwan Semiconductor Datasheet [110 KB]
• MC1310P (NTE801) Datasheet [20 KB]
• MC14174B Datasheet ON Semiconductor [174 KB]
• MC3403 Datasheet [115 KB]
• MJ15003-15004 Datasheet ON Semiconductor [60 KB]
• MJE15030-15031 Datasheet ON Semiconductor [105 KB]
• NE555 Datasheet ST [503 KB]
• OPA134 Datasheet Burr Brown [328 KB]
• OPA2134 Datasheet Burr Brown [328 KB]
• OPA2604 Datasheet Burr Brown [345 KB]
• OPA4134 Datasheet Burr Brown [333 KB]
• OPA604 Datasheet Burr Brown [179 KB]
• OPA627 Datasheet Burr Brown [602 KB]
• PN2222 Datasheet Fairchild [26 KB]
• TL071 - TL072 - TL074 Datasheet Texas Instruments [285 KB]
• TL783 Datasheet Texas Instruments [740 KB]
• TS924 Datasheet ST Microelectronics [383 KB]
• OP275 [299 KB]

Revox Documents

• Revox A720 Operating Instructions [5,9 MB]
• Revox A720 Remote Control Operating Instructions [5,9 MB]
• Revox A720 Service Manual [60,0 MB]
• Revox A740 Operating Instructions [2,5 MB]
• Revox A740 Service Manual [7,2 MB]
• Revox A77 Operating Instructions [17,7 MB]
• Revox A77 Service Manual [76,2 MB]
• Revox B215 Operating Instructions [68,0 MB]
• Revox B215 Service Manual [34,1 MB]
• Revox B225 Service Manual [98,1 MB]
• Revox B242 Diagram [7,4 MB]
• Revox B261 Operating instructions [42,0 MB]
• Revox B261 Service manual [37,2 MB]
• Revox B285 - B286 Service Manual [23,3 MB]
• Revox B760 Service Manual [49,3 MB]
• Revox B77 Diagrams [3,7 MB]
• Revox B77 Dolby Operating Instructions [784 KB]
• Revox B77 Dolby Service Manual [41,0 MB]
• Revox B77 MK1 and MK2 Service Manual [48,7 MB]
• Revox B77 MK2 Operating Instructions [30,4 MB]
• Revox B780 - B739 Service Manual [95,0 MB]
• Revox B780 Operating Instructions D - F - E [58,8 MB]

Yamaha Documents

• M-2 Owners Manual and Schematic [1,6 MB]
• M-4 Owners Manual and Schematic [1017 KB]

Cyrus Documents

• Cyrus 1 Service Manual [3,3 MB]

TEAC Documents

• TEAC A-9 A-7 Service Manual [9,0 MB]
• TEAC V-9 Service Manual [7,3 MB]

Accuphase Documents

• Accuphase E303 Circuit Diagram [4,8 MB]
• Accuphase E203 diagram [10,5 MB]
• Accuphase E303 service information [3,0 MB]

Theoretical and practical Electronics papers

• Capacitor Sound C. Bateman [4,3 MB]
• Picking Capacitors W. Jung [3,1 MB]
• Quad Mono Blocks Joost Plugge [461 KB]