View Full Version : Chip Amps
- Transformer Hum
- Brian GT's LM4780 PCB layout
- Lm4780 with vaccum tube
- hiss
- 36 V DC offset when source connected
- Help Wiring Toriodal Primaries
- Gainclone/card the hard numbers, where are the specifications?
- Is it the right way to bridge a dual OP amp?
- Calculation formula help request; 20 gain is equivalent to how many decibles???
- LED for BrianGT 3875 Kit
- Carlos' snubberized Gainclone Power supply, Part II
- Bootstrapping a LM38XX and OPA54X
- input for LM4766 with LM1036
- BrianGT 3875 parts changes
- I did a search on battery power supplies, but...
- Problems with Parellel LM 4780 GC, get -21V on outputs.
- LM3886 kit opinions?
- is this worth attempting?
- LM4780: is Cin optional?
- LM 3875 finished...
- massive ceiling fan/light control THUMP through amplifier
- Info request on TDA2612
- Chassis Ideas
- power supply question
- Help needed for active filter
- Insight request: Parallel 4780
- GC Transformer Considerations for 4 ohm spk
- DS1802 with LM3875
- Gainclone Incest
- noise problem
- Rotel amps vs LM4780 which is better?
- My super LM4780 bi-amp in process
- Which BrianGT chipamp kit to buy
- GND loop help Please
- lm4780
- What is this PS?
- Strange noise form lm3875
- DAC + Headphone amp for PC
- Multi-Channel Volume Balancing
- Speaker Suggestions for GC
- TL071/4 substitutes
- help with unidentified transformer
- LM3886 pcb approval wanted
- Now this is a Guitar Gainclone..look!!
- my active filter
- kenwood chip amp
- Gainclone with tube buffer
- need help with Kenwood TRAITR transistor help plz!
- Finding Info on Older Chips
- BrianGT amp keeps blowing up
- regulated supply with one bridge
- Where 2 Buy +/- 70VDC Switching PSU??
- GC Preamp Suggestions
- DA1545A by Philips
- SMPS for gainclone
- “King” of the DIY amps?
- Poster in Musical Instrument forum needs bridging advice on BrianGT 4780 advice
- "BPA 400"? Other high power chip amps?
- BrianGT 3875 kit troubleshooting
- GC Powersupply questions/clipping issue
- Another layout of LM4780
- LM3875 60W Amp
- creative Audigy4pro vs Audigy vs High end pre amp like krell or Bryston
- Can LM3875 blow up?
- Lies about our gainclones
- the cost of PCB.
- where to get transformer for "classic" GainClone?
- uh, and i ******* up again, caps and rectifiers got ugly warm - dead?
- what are the total current ratings requrired for the LM4780? please please answr this
- LM4780 Bridged PCB Design
- First Watt-ish Chip Amp, Variable Impedance
- differential chipamp
- Portable Speaker Project Completed
- Have anybody used Scanspeak drivers with Gain clone amplifier? tell me how it is...
- My daughter LM3886 & LM1036 Amp is finished !
- ultimate pre amp 113db S/N and distortion s almost 0. Is it better than Krell preamp
- Higher order crossovers is it possible with LM4780?
- what about TDA8920?
- TA 2040 where is it available? in India?
- What kind of speakers
- *technical elec question* DC offset/input impedance relation
- diysmartdeep21's merged chip amp thread
- Finished BrianGT LM3875 kit
- which GC pcb design is this?
- Sonic Impact in stock
- My subwoofer Crossover & LT
- passive preamp
- Bridged LM4780 Amp
- Nice polish Gainclone
- external connections for Chip Amps
- More LM1875 questions(minimized circuit?)
- Finished my Brian GT LM4780s
- Class-G amplifier with PWM supply !
- LM1875...how low can you go?
- GC - gain of 3
- resistors for paralleling
- Tda7294+tip142/47
- lm 4870 trannys question
- mono power amp using LM4780
- Gainclone for guitar
- Beginner: Slone Preamp
- LM1875/lm1876 single supply?
- PDA amp
- HF noise problem
- DIY AC cables
- Mute resistor value
- Biasing LT1362 to Class A?
- virtual ground...help
- LM 3886+tube buffer.....schematic?
- "Patek Line" finished
- Gainclone Fun - flames and more Help
- almots done with first gainclone, looking to start 2nd...
- Car audio chip amp
- No fuses in gainclones?
- Cap or caps on ac inlet ?
- problem. -35v at the output.
- Op-amp input impedances and a pot/attenuator
- grounding on p2p gainclones...
- replacing 4558s in SM Pro Audio PR8
- Data/pinout on STK407-250
- Using 2 chips to boost voltage handling
- not good! not good!
- Stk0040
- speaker sits fully forward (or backward)
- Non-polarized caps in gainclone?
- power supply cords
- LM4780 Single side PCB
- 47 Labs OTA, a cheap alternative?
- non-inverted tone control?
- LM3875 vs. LM3886 vs. LM4780
- quick transformer for gianclone
- Potentiometer choice for bi-amping
- tda2030 or opa544 or lm in the same box
- Lil chip amp from keyboard parts
- peranders industry gainclone assembly progress
- Two of Brian's LM4780 boards, one toroid
- Suitable PSU for OPA627+BUF
- Anyone have a GC PCB for sale???
- Chip amp distortion with high impedance resistive load.
- Chip Amp for bass practice amp
- Bi-amp setup...
- Need help to connect my Noble pot
- Checkout the Nelson Pass inspired GC
- implimenting chip amp in car
- lm4780 transformer for sub
- Scary! my old panasonic portable performs better than the GC!!
- Nothing to do with construction of GC
- two rectifiers one transformer?
- silent amp
- where to buy cheap caps and power tranformers?
- Class A Gainclone
- BrianGT's 4780NIGC assembly & comment
- warez the cheap amp case thread :)
- Input resistor problem(3886) please help
- Case grounded or earthed
- Who has tried a current boosted op-amp (with a transistor) as a chip-amp buffer?
- High/Low-Pass filter calculations
- BrianGT kits, still available ?
- Need help with lm4700 schematics
- Request samples from TI
- Alternative usage for LM3875
- looking for a chip amp.
- Pcb Design
- How to Wire Brain Mono Block Kit
- Remote Power Supply
- LM3886 / LM3875 supply voltage considerations
- LM3886 vs LM3875, for those that have heard both only!
- My Polished Aluminum & Marble GC
- My LM4780 Board
- Gainclones and fans, a bad mix ?
- Power supply component location.
- Troubleshooting moving_electron's inverted LM3886 amp
- Havent posted in awhile, but possible great new case
- DC Restoration -- book?
- LM3886 p2p - ground issue
- Transistors KT818 /KT 819 alternative
- LM3875 amp
- To Brian: XGC... any good result?
- p2p or PCB
- Heat dissipation from 3875
- my first try at a LM3886 layout, any comments/suggestions?
- need good but simple amp
- What does thermal shutdown sound like?
- vintage chipamps circa 1978
- chip amp plans
- add gain
- problem with Wallin preamp 2
- Low POwer Output with TDA1562Q Please Help
- Heat Sink for 8 channel lm3886 GC
- T network and supply snubber(?) revisited.
- fabulous deal on chipamp heatsinks!!!
- OPA549 Gainclone Layout
- Amp on TDA 7294
- GC problem: voltage dropout on negative rail
- Which commercial products use LM/TDA/OPA chip amps ?
- Winding new power transformer for CarlosFM's GC Design
- what to do with OPA2134?
- opa549 E/S
- LM3886 GC - "Simplest Ever Amplifier Bridging"
- Active Crossover And Sound Enhancement Units
- My first GC PCB drawing...
- Grounding When Doing Mono Blocks
- Opa549 schematics
- LM3875 and class A?
- LM3886 vs TDA7295
- question about regulated supplies.
- Generic "Open" Chassis Design Effort ...
- what is wrong with my gainclone?
- gainclones from BrianGT
- Overvoltage to LM4780
- Another finished brianGT GC.
- Gainclone up and running with some problem
- speaker protection and output short
- Sta5150
- 3-Ch LM3875 w/ Tone Control and Active Crossover
- My GC progress - with pix!
- My first GainClone is up and running...
- Fake lawing PEC carbon pot, is it worth it?
- my diy lm3886 amplifier has v- out to speaker
- transformer secondaries question
- AC filter, a tested and true method?
- LM3886T - alternative mounting
- OPA549 - Inverting or Non-Inverting?
- diode sinking
- help with chip preamp
- My second GC (progress pics)
- LM4780 PCB power transformer
- Hmmmmm, my chip amp hummms more than I do!
- Lm4752?
- simple PC mini-amp project ?
- Balanced AC, GFCI, and my Gainclone
- Tone Control for my GC
- LM4780 Heatsinking
- Parallel gainclone questions
- DC voltage on output
- Toroid @ PE
- maplin prebuilt amp modules
- Carlos' snubberized Gainclone Power supply
- Zobel Question
- Treble response with FR drivers Chip vs SS vs Valve
- Bose wave-radio and Chipamps
- ALMOST got a working CMOY...
- my first GC monoblocks
- p2p opa549 gainclone
- sounds great, thanks to everyone that helped.
- MUR860 – On Semiconductor fast diodes
- gainclone with tube preamp
- newbie Q on troubleshooting
- Define "snubber"
- CMOY! Help a Newb, Feel Good About Yourself