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- class A to class AB switch
- Quad 405 clone
- Guitar Effect pedals input/output specs
- FIND: ORIGINAL OBSOLETE TRANSISTORS
- Help! I let some magic smoke out :(
- L-speed current sea-saw circuit, simpler the better
- Thorens Restek.. Vector Pre Amp
- connecting two 110v amplifiers in series on 220v mains
- Postive output voltage only
- emotiva upa2
- Super distorted old amplifier problem
- Recommend amplifier to build
- Transistor case coupling??
- Faulty amp?
- Nikoo A-300D, recapping dilemma...
- L12-2 CFP OUTPUT AMP 120W*2 8R
- SoundTech PowerSource1300 NOISE
- Anyone tried the Renardson Output Stage ?
- Simple Killer amplifier
- Rotel 820AX problem - any known issues?
- Cause of extreme voltage swing at turn on
- Amplifier testing on PC with DAAS
- Wharfedale EVP-15P amplifier fault
- Preamp to match Meridian 206 DS cd player
- Crown Com-Tech 400 Dead Channel?
- CLASS A POWER AMP
- Ultimatest Passive Tone Control Network based on James-Baxandall's topology wanted
- Adcom GFA-535 Transistor sub
- Pioneer A400 transformer
- Amplifier volume knob noise
- 100W Hi-Fi amplifier-Help!?
- Did someone had tested this current feedback power amp ?
- Technics SU-V40
- opa827 bypassing,pioneer A-8 tone controls
- What Degrades Channel Separation in a Stereo Power Amp?
- Recommendation for audio amplifier!?
- NAD C320 Can the protection be adjusted
- transistor help please
- NAIM Nait5i V2 transformer voltage
- help fixing a tone control circuit
- Jeff Rowland Model 7 mk2 bias adjustement
- transistor source
- Need help repairing Denon AVR 5803
- My first designed amp
- Hall-effect current sensor for output stage over-current protection
- floating supply amp with single supply
- WHICH IS BETTER TRANSISTOR MJE340/350 OR BD139/BD140
- Circuit Translation Services
- Cairn 4807 Integrated Amplifier Schematic/Service Manual wanted
- Aragon 4004 slow relay problem
- Marshall Amp GR100RCD Transistor Help
- Sansui AU-6900 Questions and problems
- Thump when switching amplifier on (guitar amp)
- Oscillation only at raising slope
- Pure Reference Class A Monoblock
- Determining current limit
- digital amp modelling
- Help in improving a Cambridge P500 (more caps)
- MC250 Input Section Voltage Question
- Need help with Nad 3020A
- Jitter or phase noise in LTSPice
- The Sisian Amp
- Darlington or Sziklai (compound) pair output stages?
- Amplifier repair, some pointers please?
- Powering A Tough Speaker (Split from Simple Symmetrical Amplifier)
- how can the wattage be?
- Experience on diy gene kit A-15
- Schematic? Mark Levinson No. 33H
- marshall mg100 hdfx
- Need help please
- Op amps and Pass Transistors
- 400W Mosfet Amp Problem
- Dx line up comparisons and pcb order info?
- Sizing output stage
- Other interesting electronics forums ?
- Peavey repair- change out one of a group of outputs?
- TGM4 amplifier
- Lateral FET, Folded drivers, Biasing?
- Capacitor Replacement Opinions? - Marcof PPA-1h MC Amp
- Best place to start with channel stuck in Protect?
- Formula for CR Xo pole?
- 100W audio ampligfier - schematic!
- APEX PA Amp Turn on off mute - need design support against obsolet devices
- Tekko scored some transistors!
- help repairing JVC A-k11 integr amp
- 80W Hybrid Audio Amplifier!
- VINTAGE AMPLIFIERS
- Rotel RB990BX protection circuit issue
- Denon DRA 55 receiver manual request
- Confused about input sensitivity
- Biasing lateral FET's, component placement
- difference between these two amplifiers
- NAD 7130
- Nakamichi PA5E MK II service manual / schematic
- Peplacement for 2N5638 JFET Chopper Transistor ...?
- PHASE LINEAR 400 SERIES TWO
- to Change tweeter protection device
- 2 Signals THD format
- Borrowed a friends AMP and now it doesn't work! HELP!
- SSA variants and references
- SAE 2200. Could use some hints.
- Rotel vs NAD
- Assistance to improve 100W amplifier!
- Pre amp oscillate
- capacitor upgrade for Focal 2.150 amplifier
- pioneer a-88x recap,what else could be done
- Capacitive load testing
- Peavey CS 800x power problem
- Shunt Current Feedback
- Current Source amplifier for low impedance loads
- Hafler PC-19C Boards (Someone make a replacement?)
- Peavey cs4000 and cs4080....class?
- vintage pioneer ad-360 wiring instructions
- Need amp with 200 kOhm input impedance
- PCB for audio amplifier with TDA7250!
- Fairchild A00-6
- Problems PS Audio Delta 100
- Hopefully an easy one for you...
- Deconstructing Rowland 7
- 20~50W amp
- Replacement of IRF730 for Sonic Frontiers SFL-1
- 20watt amplifier
- Current mirrors as collector loads in a symmetric amp
- Can I? Stereo in > parallel out into 1 speaker?
- c3519 and a1386 transistor replacement
- Prefered type of amplifier
- Some not very happy experience with my used GFA-555 II AMP
- How about a JFET input, TUBE VAS+buffer, and MOSFET output?
- AVA Insight+ 240
- modern incarnations of Hiraga Le Monstre
- Noise Reduction Solutions
- schematic error
- AV400
- The double blind auditions thread
- Hum (ground loop?) issue when using HT pass through on SDS-254 amp
- PCB for QUASI Amplifier for Beginners with changes!?
- NAD 2100 protection on!
- Trying to add pre out/main in to integrated amplifier. Am I thinking right?
- THD measurement in spice
- Leach Amp Project
- Threshold Fet 2 Series 2 preamp
- sony HST-550W service manual question???
- NAD T762 - Circuit Diagram - Help!
- Another Crescendo ME Problem...
- Grundig Console KS 526
- Class S
- Simple sub amp a 10-year old could build?
- Borbely-Lender True Symmetry
- Cyrus I (issue 07)
- Schematic for audio amps
- Coupling cap 360deg phase shift??
- very first "blameless" amplifier prior 1969
- About optimos pcb
- How to simulate an OLG of the TMC amp
- NAD 3020 Rebuild - thermal breaker replacement/source?
- STK4143 MKII Datasheet
- Capacitors for this amp ?????
- PSA 150 S (pure sound amplifier)---help needed
- Amp is not bi-wired Speakers are :(
- pioneer sx 3800
- Help with a Hafler amp and AV receiver setup
- Krell KMA-100 DC Offset
- Headphone amp NE5532
- Limit Amplifier
- NAD 3100 amplifier tone POTs
- need data on ARC 4700 and ARC 4800
- Does it matter? (CLG/OLG question)
- Heatsinking drivers, do most drivers get very hot?
- Can anyone shed some light please?
- Is this heatsink suitable for this amp?
- At a loss on thins one
- MILLER CAPS ...
- Diodes instead of or across emitter resistors
- Need help with an old amp
- B&K AV6000 Sers II Running HOT
- How about even simpler with good clean sound?
- Biasing Question
- Odd regulator for frontend
- Rotel RA-312 - only one channel works
- Very simple class B amplifier
- BSH103 / BSH203 flicker noise corner
- Blameless-like amp burnt channel need help to prevent that happening again!
- Need meter light alternative for Sunfire Cinema Grands
- Aragon 4004 power amp channel imbalance
- Transistor switch audio mute
- this class a amp is good?
- P3A MODIFIED VERSION
- Rotel RB-970BX Upgrade?
- The most common cause of speaker buzz from an amp?
- can my sony amp be tweeked
- List of the best sounding amplifiers
- 400 WATTS into a 5.25" 45W RMS Speaker ?
- Upgrade for TIP35/36 outputs
- ohm's issue
- TEAC AG-V7700
- Technics SU-V7 not functioning
- Metempsychosis of a NAD
- Capacitor complacency
- sink or not ?
- Harman Kardon recycle project
- Marantz 2220 Right Channel Static
- 2 OHMS DRIVING
- Need a tough TO-220 Bipolar...
- Can a build up of dust effect the operation of a PCB?
- Dx hybrid amplifier will be produced soon
- 2N2907A instead of BC179
- Audioanalyse PA-60 (PA60) Power Amp - where to get Schematic ??
- Hafler DH 200 grounding
- Cyrus 2 amp distort when crank up volume
- Rotel RB-1010 power amp varistor!
- Two transformers on one AC plug?
- All CFP Non Global Feedback Amplifier
- JFET input, MOSFET VAS, VERTICAL output
- Should I remove These Caps?
- bench testing
- Dx Zuper A - a new amplifier to be released in July 17th - 2012
- Spice models for 2SD438/2SB560
- 2sc1318 transistor source or equivalent?
- How to take apart an old Kenwood receiver?
- Next Future Amplifier Jfet and Bjt
- Parallel Thermaltrak with standard bjt of same number?
- Phase Splitter
- "unfolded diff pair" headphone amp
- Heat sink size, Need help in determining.
- suggestions for improvement (Old Consumer Amp)
- Rail Lifter/Boost Circuit (ala TDA1562q)
- Problem with Pioneer QX4000 - have some info and circuit diagram!
- A little hum on my subwoofer
- BF822/MJE250 substitutes ?
- scrape sound in my subwoofer volume
- P3A Elliott
- Adccom GFA-585 Poping Noise & Blue cable from transformer is not plug in.
- Lateral output amp with jfet input
- spice model for 2SK711
- Info on this pair of A1943/C5200
- Which AMP should I use?
- Balance Pot Replacement
- Transistor Replacement 2N5551
- ONE MORE P3A QUESTION
- Proton am-30
- needed sony transformer specs
- I scored an entire 3000pc reel of Genuine Toshiba 2SK117-BL smd fets today!!!
- Preamps and line level...
- Some help please with Wharfedale 2050A.
- Simple Symetrical Amplifier
- Samson Servo 550 won't turn on
- replacement for 2SC4793 and 2SA1837
- Hybrid bright idea
- Low power amplifier
- Quad 44/405