View Full Version : Solid State
- CHOKE Loaded MOSFET, easy to build
- DS446 Diode ?
- SUMO Polaris Class A/B Stereo Power AMP (New to the Board)
- phonic service manual?
- Athens Audiophile Club
- Njl3281d
- Replacements for 2sa747a transistors
- Sherwood was a passion into my past..when i was young
- Sansui BA-5000 Oscillation
- NAD 3130, more to love?
- The greatist - AD745 psrr Versus AD797
- JVC A-S3 service manual
- an old HK6200 worth repairing?
- GKlein - K12A facts & figures and ideas in Class A
- ESP 60 watts
- Variable operating biass output ?
- Gibson GSS-50 Reverb Tank question
- Nakamichi CA-5 hum/buzz and does anyone have the schematics/service manual?
- NAD 3020i repair help?
- +/- rail electrolytic caps - need to be identical
- Setting power amp so speakers don't blow (help a novice)
- How do you match your LTP transistors?
- Parasound 1200 II left channel static and....
- AB Amp keep blowing fuse
- OPA2227 chips
- Audio Innovations Alto
- Dx amplifier, builder's thread
- Schematic for Belles 150A
- Bypass caps values advice
- Current source conundrum
- Anybody used a FPAA (field programmable analog array)?
- 2SC5200/2SA1943 Toshiba or Fairchild
- new ampli with IRF240
- Internal Image of qsc
- Unbalance Collector Emitter voltage both pnp and npn
- Looking for Tapco CP500 Schematics
- Peavey Mark III Bass 400 B/G? PA Problem
- Toshiba trannies from ebay
- 3T HeadPh Amp. JFET-BJT-MOSFET
- Replace old ceramic caps advice
- want to make a attenuator
- Fore MJL21193/94 driver curcuit needed
- NAD 7020i - pre-amp power supply issue
- suitable bypass cap
- 2sa1016/2sc2362
- Chinese "knock off" kits from ebay
- Switching current source for Class A?
- Nakamichi SR-4 not powering up
- Open loop gain, phase margin etc
- Need Help!!! Switching Op-amps In Preamp Gas Thoebe
- Yamaha P4500
- Akai AM-U7
- IRFP240/9240 amp Schematics
- 400W Power Amplifier
- Starting Balanced CFP!
- Attenuator
- Do you know the reason why so big voltage to the input circuit?
- Do you know what this capacitor is doing there?
- What is the capacitor from base to collector for?
- MM Electronics Paice amps???
- PCB for Bernd Ludwig's modified Quad 405 circuit
- 2sa1494 replacements ?
- Need replacement for devices GET 4871 and SCR 2N4442 in Vintage PA Amp
- Rotel RB1080 - Injured, needs consulting specialist
- Commercially available current dumping amps?
- NAD 3020 clone
- york ville amplifier
- Exposure IV blown channel
- Volume level mismatch using MOSFET output device?
- Dukane line in/speaker out help
- Introduction and Help...
- Moding this phono preamp ?
- roland jazz chorus-55 amp repair
- transformer question
- darlington transistor LTspice model ?
- Crest ST2000 scheme for Power Supply
- Professor smith needs help
- hafler dh200 blew speaker?
- Selector Switch Pop - Newbie Question
- Transistor as a Switch, is this correct?
- JFET sorting by Ron?
- Hiraga
- Convert Or Add XLR Inputs To Power Amp?
- CELLO Duet 350 supply conversion
- Left channel broken on NAD reciver...
- The "Volksamp" - NAD 3020
- Luxman C 02
- "stop" line on sony receiver
- Dukane 1a803
- Musical Fidelity X-A200 upgrade quandry
- PS Audio Linear Control Center and Phono III
- Gallien Krueger 250ML overdrive.. (J406/J412???)
- What kind of solder do you guys like to use?
- noob question about B-1000 sansui
- LT-spice VS Eagle... CAD cooperation...
- Opamp compatibility
- Pioneer A-445 help needed
- mini-mosfet
- need scmh. for europower pmh660m
- interesting amplifier schematic
- Cyrus III+PSX-R problem. Anyone knows?
- Luxman L100 vintage sound
- substitute for IC1003 in ciclotron schematics
- Stage output, driver oscillating
- Help needed with Musical Fidelity P270 II electrical problem
- Pioneer M5
- Nad 304 Protection Mode
- Amplifier circuit questions~
- Pioneer SX-838 problem
- Problem with Exposure 2010s
- Can someone tell me how this works?
- Crackling from a solid state circuit
- HELP! Adcom GFA-565 turn-on BUMP
- Plinius power amp
- DC offset/Blocking Caps for my preamp
- ONIX OA21 and SOAP Connection
- HPPA amplifier (Bert Molenkamp)
- newbie question - replacing caps
- small signal transistor
- Yamaha M-60 bias issue
- Phase-splitter using ONLY NPN transistors - any ideas?
- Adcom GF 555 Mk II , oppinions ?
- Crown M600 ...........
- Linn LK-1
- What do you look for in the distortion spectrum?
- A Question Regarding Peavey's CS 800 Power Transformer
- Self balancing multiple MOSFET output transistors.
- Adcom GFA-555 MKii blown channel checklist?
- NTE transistors-->> Backwards from original case layout!! What the heck!
- Muting Relay ..... buzzing
- Loud pop on Squelch
- Current-feedback amp, 150 a 200 watt.
- Is there a cheap way to reproduce 400 W @ 8-ohms?
- MIMPS? crown Transistor matching
- Audiolab 8000s Fault
- Kaneta method's all FET power amplifier
- amp guts
- Hafler TA-1100 Thread
- Any Wiki or FAQ here on how Power Amps work?
- transformer volume control (TVC)
- Temperature in transistors
- Audiolab 8000a fuse
- Power transformers versus amplifier output power..what is your option?
- How to find the size on a fuse to "Soundstandard MA3600" ?
- replacement for Bidirectional Switch MBS4991 and Triac 2N6346A
- HiFI OP-AMPs, BJTs, and FETs how do I choose them?
- Finding pre-amp output in mini system
- Amplifier is a piece of wire
- Need help finding replacement parts
- AB outputstage
- new amp total mosfet
- rotel ra 820
- Addressing John Curl's concerns on low noise designs
- adcom gfa 565 looking for references
- Bogen CT100 speaker hookup
- Slight balance drift ... Help please
- Vincent SP-331 Circuit diagram
- Repair Rotel RX550?
- Voltage Drop Based On The Load
- Single-ended mosfet-tube follower
- Is there a more modern transistor than a MJE181-171
- looking to make a higher end portable 12v amp,sugg.?
- 80 s pioneer amp SA540
- clearing up confusion about earthing
- Need data on mosfet
- amplifier protection
- Reparing Mcintosh MC7150
- Unity Gain op amp circuit?
- Need some advice rebuilding/upgrading 2 power amps.
- JBL eon15 g2 schematics reqd
- ncc 200 questions
- A superior VAS clamp and VAS current limit for the Blameless.
- which output transistor?
- Spectro Acoustics 500 problem
- IntregalOverloadOutput on a G R Sloane Amp
- Sick Carver M-1.0t amp: bad caps?
- crimson ck1010 preamp
- Blown PA
- Passive preamp and biamp
- Negative feedback take off point
- Use of diode in projects M-Levision
- little copper posts?
- PTC Behaviour
- 3-way passive speaker impedance linearisation
- brother of quasi /2SC3284
- help: preamp hum
- NAD 7100 / 3100 - one channel louder than the other
- Power dissipation and resistors...noob here
- Why inverting is best
- Looking for documention about Quad current dumping
- LME49811 front-end for Gilmore amp?
- Acoustic 160 adjustments
- Apt Holman Pre (mod/ restore)
- LME49830 burning
- VBE multiplier
- DJK - Questions on old design.
- General power amplifier stability discussion (using Spice)
- IRF510 and IRF9510 replacement?
- 6 Channel Volume Control
- Mcintosh C28
- Harmon/Kardon AVR 35 service manual?
- Szekeres with IRF3205?
- Class A amp and Minipod speakers
- suggestions - Amp Fig11.12 (Slone)
- VI limiters
- uPC2581V ???
- Lm391 N100
- A ...carver Question ....
- Darlington VAS stage with optimized C dominant pole?
- Cambridge audio A500 amp with broken right channel
- Pioneer SA-6500II - Balance problem?
- Source for Gold plated Bayonet Panel Fuse holders?
- Solid State 110V to 220V transformer affects audio?
- Vibrator - what type of output stage do I need?!
- SOA Old Vintage Xtors Vs new MJ21195/6
- Repairing Cello Encore 1M Line Pre
- Anyone have a schematic for the old Borbely 60W MOSFET Amp
- Need data on ITS31129
- ZCA 5 watt mosfet amp
- Hafler DH-220 Buzz
- Mcintosh parts replacement cross-reference
- Thermally and electrically conductive paste?
- 2sb1254-2sd1894
- Turning a small AC analog signal into DC
- 12BH7 in an swr sm900???
- Push and pull power amplifier
- Headphone and speaker out
- HDAM / Diamond Buffers Q
- adcom gfa555 question
- TI's audio product lineup advert
- Hafler DH 200 musical concepts mod
- Self-biasing class AB input stage
- Newbie needs advice - Perreaux PMF1850 lamp replacement?
- Smoke Emitting Amplifier--Not Good--Need Help
- Cambridge Audio A5 Amplifier Repair
- Multi-channel Ground Lift
- Help with Hafler Pro1200
- Output DC offset.
- Small signal, low thresh-hold voltage MOSFETs
- LEM PROCON 2200 PLUS Schematics
- Marantz 1030 urgent help needed!
- Question on subwoofer circuit
- Superphon Revelation pre amp
- BD829-30 as drivers and VAS
- Cheap Mosfet amps popping up on ebay for song. Any input???Please Comment
- pioneer a 605r power amplifier
- hybrid will it work?
- Hey audioman54!
- Resistor instead of Cap in HK347
- How to determine VA rating of Trans