- Avoid Potential Groundloop Problems in Headphone Amp
- DIY Input isolation filter
- Vishay/Dale RN60C or RN55E?
- Software for RIAA
- RTP3D instructions
- Adding an fx send/return to a mixer
- lme49710 preamp from china
- High gain pre amp noise problems.
- New black Jolida JD9 w pics.
- Math expression for parametric EQ project
- Passive Balanced Volume Control Questions
- XLR switcher
- Building a Stereo Equalizer
- Phase extraction!!!
- Is the blue velvet Alps still best price/performance pot?
- Preamp Capacitor Questions
- Yamaha Promix 01
- Q: Converting 5k pot to 20k pot
- Anthem D2v Mod
- (minimal) speaker level vs. line level high pass filter
- Passive Preamp?
- Need help troubleshooting PreAmp build
- prototype preamplifier
- voltage levels for line outs??
- Bottlehead Quickie
- NJM4580V MSOP in pre for recording?
- Attenuator / Pre-amp for Behringer A-500
- DIY-unidirectional electrect condenser microphone.
- Dahlquist DQ LP1
- 5-pin din input connector convert to rca
- LDR Based Input Selection
- Phantom Power MSOP op-amps
- PPS-Caps
- Bypassing a receiver's internal amp
- Ladder or Series Attenuator for volume?
- Active variable Low-Pass Filter 55-110 Hz
- Extremely Frustrated!!! Why won't my amp get loud!?!?!
- Parametric EQ problems
- radford pre Zd22
- how test electronic crossover without any instruments?
- High freq filtering of a (guitar) preamp?
- Floating Differential Signal
- 8-channel stereo line level switch
- Pre Amp/ line Problems... Help :/
- cd preamp for jlh69
- Two RCA Outputs into One! HOW TO!?
- A.C vs D.C coupling
- Passive Crossover for Loudspeakers? HELP!
- Passive Crossover for Loudspeakers? HELP!
- Inductor wiring for crossover
- Place amps next to rca inputs in enclosure?
- 3 BAND TONE CONTROL
- Signal Path Components
- Preamplifier
- A Different Opamp Compensation Technique.
- Preamp / Passive, for Biamp
- Pre-Amp earthing concern
- LDR as buffer ?
- Passive Line level crossover and input impedance *Help*
- Switchable balanced / unbalanced input buffer
- VOLUME CONTROL PASIVE !
- Dual I/V stage implementation for Buffalo II & III
- Problem with passive preamp HELP!!!
- JFET follower (Xenover) with MOX like setup?
- A excellent Pre-amp
- A little problem with Op-Amp
- Best volume kit on the market
- Best Pre amp Kit on the market
- ESP Project 104 muting problem
- How many times can you split a line level output?
- Can someone help me make a parallel line level buffer/head phone driver circuit
- Repair and Restore Phase Linear 4000 series 2
- RCA to XLR Converter
- audio reserach d100 am1 am2 modules
- Need help with Pass B1 Buffer
- frequency control of higher order filter with mono pot
- Mark Levinson Cables CEMAC
- DI Box question
- Help me measure line levels
- Pre-Amp with tone control
- wiring a dual gang pot
- Using digital interconnect as analog interconnect
- Help with playing analogue through computer, pls...
- Help needed with pcb design!
- Preamplifier
- My pre-amp/DAC/Phono/Headphone build
- not balance sound on tube pre-amp
- passing audio through unused telephone connection
- help designing RC level isolation transformer
- Selector switch questions
- dual ganged pot
- Phono Preamp for Creamic Cartridge
- What type of wire for signal in?
- Need help with single supply conversion
- Shunted pot?
- New to this so be gentle: Want to mod a Audio Control EQX
- XLR Selector Box
- Opamp for Mic preamp
- xlr to pc-soundcard
- Wiring unbalanced with XLR instead of RCA
- Electronic volume control idea
- Trying to separate signal and voltage ground: Am I thinking it right?
- Trying to separate signal and voltage ground: Am I thinking it right?
- High voltage mosfet buffer
- unbalanced to balanced conversion
- High End Tone Control
- DVD/CD Audio Out Control ?
- Stepped-Attenuators = Thin Lower-Mids?
- ANN: LF01 Discrete/Hybrid Opamp Module
- transformer coupled output= dc block?
- searching for amplifier distributer with more than 20 db bass mid treble tone control
- Does anyone use a MiniDSP 2x8 as a preamplifier?
- MARK LEVINSON ML-10
- "Reverse" Linkwitz Transform
- Active crossover for subwoofer
- 2 way crossover build (diy first timer)
- The joys of Transformer Volume Control maintenance - 23 pole switch replacement
- Current feedback composite amplifiers
- Ovation Line Pre-Amp
- Amplifier XO simulation in WinISD
- Phase inverting / not inverting preamplifier
- Help a Newb add preamps to his receiver.
- DS1802 and CD4052 mux problems
- Preamp kit $150-$300
- help modifying my Phono-stage
- what are you thoughts on zstage from decware?
- Help needed with Paul Hynes VCCS
- Diy line mixer
- help pls...about crossover watts
- Problem with DS1802 digital volume control IC
- How much overhead is required
- multiple feedback low pass filter question
- Pre-amp transistor based for dynamic mic
- Basic pre-amp for DMX controller
- Recapping Linn Linto
- Lightspeed Attenuator needs a buffer??? Try these.
- anyone modded their musical fidelity V-LPS?
- Low audio frequency cutoff filter
- Not thrilled with sound of 4562 in active xovers
- Tube preamp diy kit
- Can somebody please check over my crossover
- No Name Pre
- Can I do that subs 12ax7 with 12at7
- Notch Filter
- Swapping Op-Amps... you have checked to see it's stable haven't you ?
- wiring input for 4 ch 41hz amp9b
- Q_Dispre
- Volume & selector controller with 5x7 dotmatrix display for tube/transistor amplifier
- why would +ve regulator output -ve voltage? ?
- suhr preamp
- DIY mixer first project
- what is R and C in series to ground?
- E.C Audio Finestra Preamp
- converting passive xo to line level passive OR salen key? any advice?
- Slow ramp up/fast ramp down 48V phantom power (circuit design)
- Mic Preamp Buffer
- Rotel RC 970 BX MK II - Service Manual
- Help needed for tone control circuit
- Descrete jFET versus IC op-amp quality
- A New approach of Volume Control: AAVA (Accuphase Analog Vari-gain Amplifier)
- 8-way (remote) volume control
- Remote Controlled (RC) Volume Control Kits - Overview wanted
- what causes a big soundstage (audio research)
- Passive low-pass passive for line input - 2nd part
- Alpine ERE-G180 and G190 schematics
- Riaa capacitor voltage ratings
- THAT 1510/1512 op-amps
- Quality line attenuator?
- Passive low-pass passive for line input
- Yamaha C-65
- Preamp A - 15 : Mark Levinson No. 20.5 Derived
- 12az7a phono stage-12ay7a line stage
- Relays for ESP P125 (4-way LR crossover board)
- 3 band eq with paramertic
- tetra phono stage values
- Preamp improvements/suggestions
- Cascaded Notch filters
- Please help: building a notch filter
- Help me replacing a (they dont have that) op ic
- Improved LDR Volume Control
- Mods Xiang Sheng 728A
- Ultra-fine level setting
- line volume knob
- Behringer CX2310 Toroid wiring
- Richard Fordham 5.1 Volume Control
- INA217 mic preamp critique and questions
- Modular Balanced Preamp
- Primare i21 broken, no sound
- Jfet Preamp Calculator
- Use of ferrite beads / core on screened cables
- Tube Nube! Where to start,,
- [Help] Vintage preamp worth to buy ?
- HI-FI Magazine Pre-amp
- Basic attenuator question
- Jfet folded cascode with diamond buffer opamp
- Impedance matching LoZ source HiZ inputs
- Gain stage for SS phono
- Measuring platter speed.
- Budget "passive preamp"
- Sansui SP-220 Tube Preamp
- Preamp for Piezo cello bridge
- Mixer Section explanation help needed.
- What is a good 1st order Good Band pass?
- Preamp: Comparing LDR and buffered LDR
- BTL to Balanced Conversion
- REGA CURSA CIRCUIT
- Questios about designing with opamps
- Preamp from Velodyne HGS line
- Using PGA23XX with dac with dc offset
- Instrumentation Amp: Input Resistors?
- Mic pre amp Problem
- please help me
- Output transformer in reverse to drive a piezo disk
- add a volume control to a dac with dc offset
- How to switch phantom power?
- zoe tsang simple opamp preamp/buffer kit on ebay
- Impedance of parallel transformers
- External tunable X-Over
- sound of discrete opamps
- Big Dumb Input Selector
- DIY Line preamp sugestions, 10meter cables
- which tube preamp kit for newbie
- EQ Circuit before or after crossover circuit ??
- Schematic needed panasonic RX-1230 schematic
- Passive 16 channel summing mixer
- schematic needed: 3 band equaliser + gain stage
- Quick question on pots for guitar pre
- Counterpoint SA5 Phono Channel Out... Help!
- Help with Op Amp outamp
- Discrete dual-opamp DIP08 module (jcx topology)
- Preamp disappointment and passive mod???
- Need help with volume control
- Solid State Pre Amp with Tube Amp - Pointless?
- Touch-sense/remote active/passive preamp
- Summing Mixer and Headphone amp...
- Linkwitz-Riley low pass, strange distortion?
- Cauer / Elliptic Filter design program
- do I need vintage preamp?
- Optical Attenuator on the Cheap
- CDP output enough for line-level active crossover?
- Replacing Samson S 3-way Xover Op amps
- Any Semi Manufacturers Better Than Others?
- Help me to Build Tube Preamp with Phono
- Need audio input indicator
- Where do I put the subwoofer volume control potentiometer?
- XLR to RCA I/O with Aleph Pre, Acurs Amp, X-OVR and Nak Dragon
- microphone echo & delay fx circuit
- 3 band eq using jfet transistors
- compenstation cap for 2nd order allpass delay circuit
- Recommend a DIY pre-amp for use with Hypex UCD modules