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Application Schematics


If you know the number of the Application Schematic that you are interested in,
you can go directly to the Numerical Index


Mic Preamp
Line Input Line Output General Interfacing
Musical Instrument Equipment Upgrades Miscellaneous

Mic Preamp Application Schematics
(Adobe Acrobat Reader Version Information)
APP# Title
AS016 Standard Microphone Preamp Input Circuitry (12KB PDF)
AS017 JT-13K6-C in Simple One IC Stage Mic Preamp (15KB PDF)
AS018 JT-16-A in Single Stage Low-Noise IC Mic Preamp (16KB PDF)
AS019 JT-16-A in Single Stage Mic Preamp with Two DC Servos (19KB PDF)
AS020 JT-115K-E Tube Microphone Preamp Generic Input Stage (11KB PDF)
AS047 Two JT-115K-E used in Symmetrical Mic Input Stage (10KB PDF)
AS049 JT-MB-D Converts 600 Ohm Unbal. Mic to 150 Ohm Balanced Mic Line (10KB PDF)
AS054 JT-115K-E Cascode Tube Microphone Input Stage (13KB PDF)
AS055 JT-MB-D Passive Stereo Matrix for M-S Mic Technique (8KB PDF)
AS082 IC Mic Preamp uses Jensen Twin-Servo Circuit Topology (11KB PDF)
AS083 Famous Twin-Servo 990 Mic Preamp Basic Circuit (15KB PDF)

Line Input Application Schematics
(Adobe Acrobat Reader Version Information)
APP# Title
AS005 JT-11P-1 Receiver for Very Long Line Applications (17KB PDF)
AS035 JT-MB-C in Low Noise, High Isolation Line Receiver for Low-Z Sources (13KB PDF)
AS060 JT-11P-1 as "Phase Splitter" with Symmetrical Outputs (13KB PDF)
AS072 Additional RFI Protection for Line Input Circuits (8KB PDF)
AS087 JT-11P-1 Generic Tube Line Input Stage (10KB PDF)
AS088 JT-11P-1 Balanced Tube Line Input Stage (12KB PDF)
AS089 JT-11P-1 Balanced XLR Input to Unbalanced RCA Output (11KB PDF)

Line Output Application Schematics
(Adobe Acrobat Reader Version Information)
APP# Title
AS021 JT-10K61-1M Line Driver uses Push-Pull Vacuum Tube "Cascode Follower" (11KB PDF)
AS022 Simple 0 to 24 dB Gain Amplifier and Balanced Line Driver (18KB PDF)
AS023 20 dB Amplifier and High Current Balanced Line Driver (17KB PDF)
AS024 12 dB Amplifier and High Current Line Driver with DC Servo (18KB PDF)
AS025 JT-123-S Line Driver with Feedback Around the Transformer (14KB PDF)
AS026 JT-11-BM + JT-990-C = Ultra-High Performance Output Stage (13KB PDF)
AS027 JT-10KB-D + JT-990-C + JT-11-BM = Ultra-High Performance Line Driver (16KB PDF)
AS028 JT-11SSP-6M + JT-990-C + JT-123-BL = 50 Ohm Long Line Receiver and Driver (18KB PDF)
AS029 JT-10KB-D + JT-990-C + JT-123-BL = 50 Ohm Long Line Driver (18KB PDF)
AS030 JT-11-BM High Level Differential IC Output Stage with DC Servo (16KB PDF)
AS031 JT-11-BM High Level High Current Differential Output Stage with DC Servo (19KB PDF)
AS033 Low Noise version of High Level Output Stage in 1031 (19KB PDF)
AS034 JT-123-BL High Level Low Impedance Differential Output Stage with DC Servo (19KB PDF)
AS051 JT-123-S Differential Line Driver with Feedback Around the Transformer (15KB PDF)
AS056 JT-11-YZPC in Unbalanced Long Line Driver/Isolator (13KB PDF)
AS079 High Output Line Driver for Single Ended Power Supply (14KB PDF)

General Interfacing Application Schematics
(Adobe Acrobat Reader Version Information)
APP# Title
AS001 JT-11P-1 Unbalanced Automotive or Consumer Application (13KB PDF)
AS002 JT-11P-1 Conversion of Unbalanced Input to Balanced (14KB PDF)
AS003 JT-11P-1 Upgrade of "Active Balanced" Input to Transformer Balanced (14KB PDF)
AS008 JT-DB-E "Direct Box" for Very High Level Signals (12KB PDF)
AS009 JT-11SSP-6M Low-Z Line Isolator with Termination Switch (11KB PDF)
AS010 JT-11SSP-6M 600 Ohm Line Isolation Application (11KB PDF)
AS011 JT-11SSP-6M 150 Ohm Line to 600 Ohm Load Application (11KB PDF)
AS012 JT-10KB-D & JT-6110K-B "Pro" to "Consumer" Interfaces (10KB PDF)
AS036 JT-11-DM Basic "Hum Stopper" Transformer Isolation Box (12KB PDF)
AS041 JT-10KB-D used in Line Level 2-Way "Splitter/Isolator" (17KB PDF)
AS042 JT-11P-1 used as Unbalanced Polarity Inverter (10KB PDF)
AS046 JT-11SSP-6M Universal Patchbay Isolation Application (12KB PDF)
AS052 JT-11-DM Converts Unbalanced Output to Balanced (15KB PDF)
AS053 Dual JT-MB-C Microphone Combining Circuit (9KB PDF)
AS059 JT-6110K-B Isolates "70 Volt" Line and Converts to Line Level (9KB PDF)
AS065 JT-11SSP-6M Passive Stereo Matrix for M-S Mic Technique (11KB PDF)
AS068 JT-10KB-D Isolates and Converts Speaker Drive to Line Level (11KB PDF)
AS077 JT-11SSP-6M Bi-directional Lo-Z Long Line Application (14KB PDF)
AS078 JT-DB-E Converts Consumer Stereo Inputs to Mono Balanced Mic Output (9KB PDF)
AS080 Stereo to Mono Combiner for Balanced Systems (12KB PDF)
AS081 JT-10KB-D & JT-DB-E Provide "J-Box" Consumer to Studio Interfaces (13KB PDF)
AS090 JT-6110K-B Converts High Impedance Input to X10 Balanced Audio Input (10KB PDF)
AS093 JT-11SSP-8MA in Passive Output for Crystal D/A Converters (14KB PDF)
AS094 JT-11SSP-6M in Wheatstone Bridge Stereo to Mono Combiner Circuit (11KB PDF)
AS096 JT-DB-E in Ham Radio Line Level to Mic Level Circuit (9KB PDF)
AS101 "Alway On" Signal Sensing Subwoofer Mute Circuit (9KB PDF)

Musical Instrument Application Schematics
(Adobe Acrobat Reader Version Information)
APP# Title
AS007 JT-DB-E Standard Musical Instrument or Synthesizer "Direct Box" (14KB PDF)
AS066 JT-DB-E Full-featured "Direct Box" Application Schematic (15KB PDF)
AS092 JT-11P-1 Balanced Line Level to Unbalanced Guitar Level (9KB PDF)
AS013 JT-11P-1 in 2-Way Passive "Guitar Splitter" (8KB PDF)
AS014 JT-11P-1 in 4-Way Active "Guitar Splitter" (13KB PDF)
AS045 JT-11-FL provides Isolated Line Output from Guitar Amplifier (12KB PDF)
AS061 JT-11-FL Isolates & Converts Guitar Amp Speaker Out to Line Output (13KB PDF)
AS004 JT-11P-1 Isolates "Phantom Powered" Guitar or Instrument Buffer (16KB PDF)
AS097 JT-DB-E in Guitar to Amp Long Line Circuit (16KB PDF)
AS098 JT-DB-E and JT-11P-1 in Piezo Pickup Amplifier Circuit (12KB PDF)

Equipment Upgrade Application Schematics
(Adobe Acrobat Reader Version Information)
APP# Title
AS006 JT-11P-1 Input to Ultra-Analog 20 Bit A/D Converter (11KB PDF)
AS015 JT-MB-C Isolates both Mic and Line Inputs of Inexpensive Mixer (13KB PDF)
AS037 JT-MB-C "Real" Mic Inputs & Phantom Power for Sony DAT (16KB PDF)
AS039 JT-115K-E90 "Sync" Conversion for Magna-Tech 69C Repro Amplifier (17KB PDF)
AS043 JT-6110K-B at Input Stage for Crystal A to D Converters (13KB PDF)
AS057 JT-MB-C Mic Input Isolation for Mackie Mixers (13KB PDF)
AS058 JT-MB-C Modification for Mic Inputs of Mackie 1604 Mixer (14KB PDF)
AS062 High CMRR Balanced Interface for Crystal 18 or 20 Bit A/D Converters (12KB PDF)
AS063 JT-16-A Improves Performance of SSM2015 Mic Preamp IC (11KB PDF)
AS064 JT-16-A Improves Performance of SSM2017 Mic Preamp IC (11KB PDF)
AS069 JT-11P-1 Improves CMRR of "Electronically Balanced" Line Inputs (15KB PDF)
AS070 JT-MB-C Used to "Phantom" Power the Realistic PZM Mic (12KB PDF)
AS073 External Isolation Transformer Box for Mackie (and other) Mixers Eliminates RFI Problems (14KB PDF)
AS074 Internal Modification to Mic Inputs of the Mackie 1604 Mixer Eliminates RFI Problems (14KB PDF)
AS075 Balanced Line Inputs/Outputs for Silicon Graphics Workstations (12KB PDF)
AS076 Using the JT-16-A with "The Country Boy's Capacitor Microphone" (14KB PDF)
AS084 Output Amplifier to Upgrade Neve BA282AV Circuit Board (16KB PDF)
AS086 JT-11SSP-6M as Input Transformer for Crystal CS5367 A/D Converter (13KB PDF)
AS091 JT-11P-1 / JT-10K61-1M Teletronix LA2A Circuitry Modifications (10KB PDF)

Miscellaneous Application Schematics
(Adobe Acrobat Reader Version Information)
APP# Title
AS032 Build the "Hummer" to Find "Pin 1 Problems" in Equipment (17KB PDF)
AS038 Phantom Power Battery Test Circuit (8KB PDF)
AS040 Calculating Transformer Related Noise Figure (15KB PDF)
AS044 Stereo Headphone Driver uses LM6325 Current Booster (16KB PDF)
AS048 Simplified Measurement of Output Impedance (12KB PDF)
AS050 High Performance Audio Op-Amp Quick Reference (14KB PDF)
AS071 "Anti-RIAA" Equalizer for Line to Mag Phono Converter (11KB PDF)
AS085 Proper Grounding Inside Equipment Avoids Ground Noise Coupling (aka "Pin 1 Problems") (15KB PDF)

Application Schematics - Numerical Index
AS001 |  AS002 |  AS003 |  AS004 |  AS005 |  AS006 |  AS007 |  AS008 |  AS009 |  AS010
AS011 |  AS012 |  AS013 |  AS014 |  AS015 |  AS016 |  AS017 |  AS018 |  AS019 |  AS020
AS021 |  AS022 |  AS023 |  AS024 |  AS025 |  AS026 |  AS027 |  AS028 |  AS029 |  AS030
AS031 |  AS032 |  AS033 |  AS034 |  AS035 |  AS036 |  AS037 |  AS038 |  AS039 |  AS040
AS041 |  AS042 |  AS043 |  AS044 |  AS045 |  AS046 |  AS047 |  AS048 |  AS049 |  AS050
AS051 |  AS052 |  AS053 |  AS054 |  AS055 |  AS056 |  AS057 |  AS058 |  AS059 |  AS060
AS061 |  AS062 |  AS063 |  AS064 |  AS065 |  AS066 |  AS068 |  AS069 |  AS070 |  AS071
AS072 |  AS073 |  AS074 |  AS075 |  AS076 |  AS077 |  AS078 |  AS079 |  AS080 |  AS081
AS082 |  AS083 |  AS084 |  AS085 |  AS086 |  AS087 |  AS088 |  AS089 |  AS090 |  AS091
AS092 |  AS093 |  AS094 |  AS096 |  AS097 |  AS098 |  AS101





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