View Full Version : Analog Line Level
- 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
- Just passing my PLXXO and trafo design by the experts :)
- Line stage cap recommendations
- AGC automatic gain controler
- High quality capacitors for crossovers?
- Organizing Components for Low Noise?
- fender tmb circuit
- 3 band eq
- Is This Preamp Okay?
- Need a preamp for my sub
- Cello Audio Palette
- Questions on xover and preamps.
- INA134, balanced an unbalanced, normal phase and inverted phase
- Help! needed a mic preamp for amplifier
- Passive Preamp - Grounding plan
- +/- 0.3V bumps on my ground
- Yet another preamp...
- Active Filter, Delay, and LT circuit board
- does anyone have a schematic and pcb layout for 3 band bass onboard eq?
- Carver C-1 Preamp Output Voltage Issue
- Adding bands to an equalizer circuit?
- transformer attenuator directly from v-out dac
- Looking for a better OP-Amp to replace a UTC TDA2822L
- Hafler DH-101 Pre-Amp
- Moog parametric EQ - proper pots?
- pga2310 output resistors
- HELP with Kaneda line stage PSU
- source/ speaker selector
- Stepped attenuator - getting the impedance right
- Volume control bent(slight) parasound PHP-850
- connect IR receiver
- High cap ceramic capacitors.... how they "sound"
- LED peak level indicator
- Balanced Matrix Mixer Question!
- Where shall I place the potentiometer?
- Preamp to go with an Arcam Delta290 power - do i need active, or will passive be ok?
- Is This Possible? Am I Crazy?
- Sony TA-E88b ?????
- coda pre-01 help fix?
- Need a 1 meg input pre stage-?!
- Balanced Line driver help.. noisy
- 6-band graphic eq project component substitutions / improvements
- 1176 compressor output transformer alternative
- Help-AC input connected directly to case!
- different gain levels and a PLLXO´s impedance
- Thorens restec V1 preamplifier
- Signal-Powered Compressor?
- simplest, purest mixer
- Ideas to improve this microphone preamp?
- Preamplifier from Lineup & Fotios for fun
- MM cartridge capacitance loading
- Volume Equilizer
- Wanted: Melos 110B schematics
- Can 555 circuit supply enough neg voltage
- amplifier works connected to PC .. but not when connected to car radio
- DIY a preamp
- Dynaco PAS Preamp - Complete Rebuild
- Subwoofer filter problem - Please help me
- Remote control receiver - help
- High end preamp kit
- Output tranny for 6080 tube
- Need to convert a Linar preamp from 220V to 120V
- help with interfacing microcontroller to pga volume chip
- Carbon pot vs digital pot
- Amplitude Errors in the Summed Response of Audio Crossover Filters
- Mixer/Amplifier
- Help upgrading opamps!
- EAD theatermaster 8800 problem
- Arduino controled PGA2310 Preamp
- Lightspeed clone, BOM
- Passive Line Splitter
- Resistor wattage for stepped attenuator
- Emitter bypass caps in a CE stage
- Wanted: Zero feedback 2-10x gain line stage...prefer symmetrical
- Cheap Valve Kits (such as this one)... Are they worth the effort?
- Need help with Adcom gcd-575
- Subwoofer channel mix + crossover
- Digital volume control from audiomodule
- audio mono preamplifier schematic needed
- 8 channel touch sense/remote volume controll
- Help with Hum - Hum Help - Aikido
- Denon 3808 Schematic
- 24 input/24 output mixer
- new idea (for me): dual first order building block PCB
- Op amps help! 3x3 12v matrix mixer
- Project: Stepped attenuator. 35 steps!
- Fixing a Kenwood 700c preamplifier - help please!
- Looking for help to put together Oracle tt and Graham arm
- Vintage Audire Diffet 2 preamp help
- This guy has a circuit tattoed on his arm
- DC servo and gain stage board with output zobel
- class A Line level buffer
- Blue tooth headset used for wireless
- Looking for: wireless remote control of volume/balanceH
- Very noisy pre-amp outputs.
- I need a line level splitter and don't want to spend $50+ on a transformer
- reusing a 3-way crossover
- Is this Design practicable?
- Mis-behaving crossover/preamp
- Low distortion & noise digitally controlled volume chip
- Passive (active) preamplifier with selector (motorized ALPS, IR)