- "The Evil Sandman" Preamp
- NEUMANN 3-band equalizer
- Court Acoustics GE60 EQ wiring question
- Akikido LSA/HPA 9-Pin or Akikido Octal which one?
- Bypassing a 100uF output electroytic - which value?
- Preamp Noise
- Class AA Opamp Schematic
- 3-way active XO ... can amp input coupling caps be tailored for the frequency band?
- sound effects(echo,bass,repeat,trible)
- Aux send Circuit
- CD-4 (Quadro) LP-decoder/RIAA
- [PROJECT] 4 way crossover with signal detect
- Nad S100 pre-amp woes
- 50watt class-b amp mx50v6
- JLH Liniac Revisited
- Balanced mixer output?
- Digital XO vs Op-amp XO, which would be best to use in active speakers?
- DC powered active Xover w/ balanced outputs?
- Smartkit Preamp+psu
- DCX2496 into Quest 3004
- First ever DIYish Preamp/Remote Volume etc...
- NE5534AH pin out requested
- Crossover help
- Changing the std. opamp of active x-over
- Ca 640p
- Marchand Crossover Build Help
- Splitting Line Level Signal
- Multiple inputs for single output
- A-weighting
- Reckhorn F-1 and others; suggestions.
- Analog audio mixer Inkel pro mx-1200
- Sugden T48 tuner help
- 6ch. volume control + attenuator for DCX2496 on the cheap
- Star ground goes extreme
- High quality preamp
- Behringer DCX - need to do something to it
- Input Question
- Need Help From The Brainiacs :)
- Counterpoint SA5 Preamp Problem
- TUBEpre and Lightspeed LDR attenuator
- A treble boost line amp
- newbe need help with project
- Anyone built the phono pre from LM4562/LME49720 datasheet?
- pre amplifier build project
- Simple Headphone Output to tube Preamp - ideas?
- Guitar - iPod - Heaqdphone amp
- samson s-3 way xover ?Anyone used?
- Need to make 3 line outs from 1
- Arduino based Input Selector for preamp
- Another Wrench In the Works... Inductive RIAA
- DIY Mobile Line Output Converter
- Trouble with roland ac-60!
- active vs passive time delay
- Dead Left Channel on my Kenwood CI Pre-amp
- Phono stage with NJM2068DD or TL071/072
- Trimmer pots for onboard guitar preamp tone controls?
- Passive Bandpass Filter
- Using resistor at output to reduce volume of headphone
- Balanced "passive" crossover
- MAX5486- digi pot help!
- gain stages in dynacord mixer
- DRV134 pcb
- quick and dirty Mono Sum circuit
- Anybody interested in checking my PLLXO?
- Yet another Volume controlers and source selections
- Volume control
- low gain 12ax7 schematic
- Marantz HDAM Preamp DIY Kit on Ebay
- "Crazy" power for preamp
- ImPASSe -- transformer transplant
- Phono to Aux Conversion
- Easiest and fastest way to measure a crossover's transfer function?
- Help needed making an RCA Y cable
- Anyone heard a Leak 70 ss amp ?
- John Curl's Blowtorch preamplifier part II
- Meaning of an output's "load impedance"?
- Remove mid range boost EQ circuit?
- Oscilloscope BK precision 1477
- Help whit Ebay/diy zone regulator
- Stereoscope Leader
- HELP channel select on guitar amp
- Looking for service manual of mixer Aeq BC-2500
- DAC datasheet
- TL072 or NE5532 (or TL074) Which is best?
- Ready made graphs that can import data
- Rotel + BHC Aerovox 10000uF 63V... worthwhile change?
- ultra-low distortion audio oscillator
- Home made audio multiplexer (switch) using 4051 or 4052? (74HC...)???
- Cable lifts
- Question on passive preamplifier - transformer section.
- My very first PCB layout - INA217-based mic preamp was the victim
- Anyone using microphone cable in making their phono cable?
- About replacing the NJM-4559 by LM4562 in this circuit
- How to have a 48v+ on McCurdy preamp
- Repairing Class A/AB amp with Blown Fuse
- Accuphase C-27
- Dbx 146221 Ic
- Interconnects question.
- switch noise
- Which Op-Amp? (Afraid to ask really...)
- Few questions about Linkwitz' mic amp circuit
- Rotel RC-850 Pre Amp + Rotel RB-870BX
- active filter 'without' opamps
- newbie non solder mods?
- Need suggestion for tube MC pre-pre
- Schematic needed for Pioneer PL880
- obbligato's with vitamin q as bypass
- My firtst tube amp
- Where to find RF remote stepped attenuator?
- Crashing Sound
- Exposure 2010 phono board OPamp?
- rc4558p replacements?
- help with passive line level crossover PLLXO for 33K impedance amps
- Headphone amp circuits
- Jensen JT-11P-1 Line Input Transformer
- DIY phono to replace roksan phono stage
- PoorSerbianMan Lightspeed
- line level high pass filter
- Mechanic hum
- Filters - adjustable gain
- Power transformer design paper
- How to build a simple balanced mono line mixer
- Phono Stage...
- Importance of quality resistors ?????
- Low-V simple phono stage + tube buffer
- output standard?
- Suggestions on a VCA and amp
- Mains toroid as MC step up?
- Juicy Music Tercel
- IC wiring (ignoring the materials used and hopefully too long a thread)
- 2 sources into 1 Stereo
- tube box I service manual
- DIY tube phono preamp ?
- where do I begin to build an eq?
- how to? simple wow/flutter measurement
- Electrolityc Capacitors Footprints
- Choke, filter for white noise
- What type cable to use for double shielded driven guard?
- HQ Balanced Phono Preamplifier for MC Cartridges using OPA2604
- Linear voltage regulator: how to make good use of "sense" and "ground sense"?
- High frequency high voltage oscillator - help!
- Re-wiring to balanced (tonearm)
- Stepped Attenuator giving unexpected behavior
- Convert RCA box to XLR (phono)
- Simple phono stage (MC)
- simulating parallel netfilter
- AGC in FM tuners ?
- Balanced XLR source RIAA
- new phono stage or old preamp with phono?
- opamp hum and buzz problem
- Newbie looking for preampphono Help :)
- Dr. Imbabi’s DIY Power Supply?
- A question about diamond buffers
- About power transformer of technics st-8077 tuner
- KLH / Burwen Research 7000A Mods ?
- How big difference of noise between the realistic circuit and pspice simulation?
- distortion cancellation for beginners
- looking for a Dual H1010V crystal-out DIN connector
- winding TVC?
- What does the phono ground wire actually ground?
- Bridged current-drive amp?
- Incognitoed RB300 question?
- Super Audiophile Phono-Stage - Battery Powered
- Looking for Balanced attenuator ideas
- Ipod Power Supply for AC synchronous?
- Wiring this as SUT
- Mod By Mail?
- Denon AVR-600 repair
- Help with upgrade to Sansui TA-500
- New DISPRE preamp, successor to previous popular version
- 1970's Pioneer sound system. Finding matching components?.
- Looking a schematic for Electrocompaniet ECI4
- Analogue vs. Digital RIAA
- D.i.
- Need a Passive Mixer Circuit that allows for disconnected sources
- braun fm tuner antenna connections
- Need help designing custom pbc board
- Waxy substance leaking from Pilot multiplexer transformer
- mains hum prob
- Repair of DBX 3bx Expander.....Where to get it repaired.
- Dual balance potmeter with center
- Sansui Xr-q7
- Stumped---Floppy Drive
- Reprocessed for stereo, Rechanneled for stereo and Duophonic
- need 5.1 Channel Audio Volume Controller
- OPA228 vs NE5534
- Help Needed- Westrex Transformers.
- Ultra low distortion amp
- Best overload performance RIAA opamp pre?
- Sherwood Receivers
- Replacing RCA cables on AR EB101
- MC headamp with opa
- Sanity check on an external transformer box.
- Max spl of electret capsule
- Analogue any good in Sangean HD?
- Use of Diodes in mono and stereo signal splicing
- Yamaha R5 natural sound receiver
- Battery supply.
- Dual FET recomendation
- How easy is it to convert from 110V AC to 240V AC?
- VCA clicks
- Preamp/dual source box
- how to make a audio source selector?
- audio/power/control over cat5?
- Log potentiomenter, constant Rin
- battery supplied VSPS pre amp?
- Designing a phono pre. #1: high gain block
- 2200 uf 6.3 v Black gate for 2200 uf 16 vdc
- Best emitter / source / cathode follower topology
- questions about grounding and noise
- THD prediction
- Need advice, build control/switch box
- Tuner Capacitors
- Open-Source Audio Input Switch
- Buffered Passive I/V vs. Active I/V
- Top of the line Alps pot used in Kondo KSL-M7 preamp.
- Denon DP-55K
- Carver + null difference test + how can i copy a amp
- dts conversion from analog
- Tooling (lathe / mill) recommendations ?
- Input Impedance
- Splitting A Line Level Signal.
- Braun PS1000 circuit diagram
- Using TRS Audio Jack Switch
- Using AES/EBU (DA206) for an analogue interconnect?
- Trans Impedance Interface?
- Can I convert 200ohm analog audio into 75ohm?
- Impedance matching; phono > pot > A/D convertor?
- box grounding
- Active highpass filter - ground
- Routing signal
- FM broadcast gear
- Mic compressor limiter
- Phase control in 4th order butterworth MFB LPF
- Lt115 Based Phono Amp (With Pics!!!)
- by what to replace the TL072?
- OP AMP EXPERIENCES and HOW TO
- Capacitor for DC servo
- DIY antenna
- Preamps: dynamic range or magic sauce?
- building a line driver
- Musical Fidelity X Series DIN PSU pin outs?
- My VU meter
- Problem with Cinemag and AA 2006 phono.
- Analog Pitch Shifting
- How to use DC supply with phono preamp?
- 3-way matrix switch
- Grounding chassis
- solving hum problem using external mic with camcorder
- Behringer Denoiser SNR2000 schematics?