jackaudio

Ill have these thanks

Item: Focal 7V313 Midrange Price Range: ? Item Condition: New or Used Extra Info: Let me know if you have a pair for sale.

These are my amps I can answer any questions ..

It’s got 4 sets of rca however I’ve only used it with an seperate preamp

Thanks For the idea however I’d already moved on and would be happy to sell it as is if anyone is interested

Item: AKSA 55 POWER AMP - NOT WORKING Location: Mentone Price: $150.00 Item Condition: Not working Reason for selling: Not working and outside of my technical ability to fix Payment Method: Pickup - Cash, Post PayPal with fee plus shipping Extra Info: I bought this amp last year from SNA I paid $350.00 since then it stopped working, 2 blown resistors on one of the amplifier boards, I replaced them and they burned out again, someone with technical knowledge should be able to fix this it is outside my capabilities. Pictures:

Relisted

Item: Ming Da MC845-C Mono Block (pair) Location: Mentone Vic Price: $1750 ONO Item Condition: Excellent Reason for selling: chan found new amp need funds for purchase Payment Method: Pickup/post - Cash, eft, PayPal (buyer pays fees) Extra Info: I am the original owner and ordered these directly from the factory for Australian voltage they have performed flawlessly and I am told many ways better than the new model this pair being a simpler circuit. They have had light use over the years, fantastic punchy 845 sound. Excellent condition both electronically and cosmetically. Beautiful workmanship inside, all point to point wired. Upgrades include: audiophile capacitors (Ampohm PIO Aluminum Foil & Audyn True Copper Caps) upgraded tubes (Tungsol 6SN7, GE JG5751 Black Plate, Brimar 12AU7A Long Plates) Specifications: Output power: 20 W max Class A Output impedance: 4Ω and 8Ω Input level: 400 mV Input impedance: 100 kΩ Frequency range: 20 Hz - 25 kHz ± 1dB S/N ratio: 88 dB Input jacks: 1 RCA Output jacks: 3 Banana/Binding Posts Vacuum tubes: 1x 845, 1x 6NS7, 1x 12AU7, 1x 12AX7 Power supply: AC, switchable 110-125V/60 Hz ↔ 220-240 V/50 Hz Power consumption: 196 W Dimensions: 58x29x36 cm, LxWxH Weight: 20 kg Pictures:

Item: Ming Da MC845-C Mono Block (pair) Location: Mentone Vic Price: $2000 Item Condition: Excellent Reason for selling: Change of direction Payment Method: Pickup/post - Cash, eft, PayPal (buyer pays fees) Extra Info: I am the original owner and ordered these directly from the factory for 240v they have performed flawlessly. They have had light use over the years, fantastic punchy 845 sound. Excellent condition both electronically and cosmetically. Beautiful workmanship inside, all point to point wired. Upgrades include: audiophile capacitors (Ampohm PIO Aluminum Foil & Audyn True Copper Caps) upgraded tubes (Tungsol 6SN7, GE JG5751 Black Plate, Brimar 12AU7A Long Plates) Specifications: Output power: 20 W max Class A Output impedance: 4Ω and 8Ω Input level: 400 mV Input impedance: 100 kΩ Frequency range: 20 Hz - 25 kHz ± 1dB S/N ratio: 88 dB Input jacks: 1 RCA Output jacks: 3 Banana/Binding Posts Vacuum tubes: 1x 845, 1x 6NS7, 1x 12AU7, 1x 12AX7 Power supply: AC, switchable 110-125V/60 Hz ↔ 220-240 V/50 Hz Power consumption: 196 W Dimensions: 58x29x36 cm, LxWxH Weight: 20 kg Pictures:

THanks for everyones interest at this stage racks are spoken for pending collection.

Item: Hifi Rack including separate Turntable stand (not pictured) - collection from Caulfield this weekend Location: Caulfield Price: Free - SOLD PENDING COLLECTION Item Condition: Good as pictured Reason for selling: Down sizing - no longer required Payment Method: Free (or a nice bottle of red) Pickup Only Extra Info: Must be collected from Caulfield this weekend, you will need a wagon, ute or similar as it is about 5foot tall... heavy duty hifi rack with adjustable glass shelving including is a seperate turn table stand with a couple of shelves about half the size of the rack (not pictured) dimensions will be supplied later when I receive them. Helping a friend who is having a big clean out. This is a heavy unit and will require assistance to lift, wont fit in a sedan. Pictures:

Price reduced

Item: Sony Playstation SCPH-1002 Location: Mentone Price: $30.00 Item Condition: used working order Reason for selling: no longer needed Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: Plenty info online Pictures:

Item: Burson Clock Low Jitter Clock 11.2896mhz Location: Mentone Price: $100.00 Item Condition: Brand new never used Reason for selling: not required Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: Pictures:

Item: Logitech Squeezebox Duet remote control and charging cradle Location: Mentone Price: $60.00 Item Condition: Used - good working order Reason for selling: No longer required Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: Controlers a range of logitech devices Pictures:

Item: JVC Boombox RC-EZ31 This has the Shigaclone transport includes remote Location: Mentone Price: $100.00 Item Condition: used works perfectly Reason for selling: no longer required Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: Pictures:

Price reduced to $500.00

Item: MHZS CD88E Silver Faced Tube CD Player Location: Melbourne Price: $500.00 Item Condition: Excellent Reason for selling: No longer used Payment Method: Pickup - Cash, Paypal, COD Only Extra Info: Purchased several years ago, used as a stand alone player sounds great, was moved to transport duties a couple of years ago Lucas at Black Art has done some work on the power supply for digital output. Weighs in at 18kg - PLenty of info online, lots of mods and tutorials to get the best out of this machine and at the price is a fantastic buy.

Item: Logitech Transporter Price Range: Negotiable Item Condition: New or Used Let me know if you have one for sales. Thanks JA

My main source is a Scott Thomson tda1541 dac it is not suitable for use with the lightspeed I have moved to a Weston acoustics tune 6sn7 pre. Joz: I'm located in Cheltenham

Item: Lightspeed Attenutator Location: Melbourne Price: $350.00 Item Condition: Excellent Reason for selling: Different direction and is now surplus Payment Method: Pickup - Cash, EFT Pictures: Just stock image from the web. Postage should not be anymore than $15.00

How about a Weston Acoustics Tune Preamp

Thought some of you may be interested in this free online course https://www.coursera.org/course/audiomusicengpart1 In this course students learn the basic concepts of acoustics and electronics and how they can applied to understand musical sound and make music with electronic instruments. Topics include: sound waves, musical sound, basic electronics, and applications of these basic principles in amplifiers and speaker design. Course Syllabus Week 1 Lesson 1: Introduction to oscillations and sound waves, simple oscillating systems, sound pressure, sound waves, the speed of sound, wavelength, frequency and pitch, sound pressure level, loudness, making sound, properties of musical sound versus “noise†Lesson 2: Electronics fundamentals - charge, current, voltage, power, resistance, Ohm’s law, DC circuits, finding currents and voltages in simple circuits Week 2 Lesson 1: Reflection and absorption of sound, resonances in air columns, resonances in enclosures and rooms, diffraction and diffusion of sound, reverberation, principles of designing a good music studio Lesson 2: AC signals, phase and complex numbers, capacitors, inductors, transformers, impedance, AC circuits and AC circuit analysis, simple filters (high-pass, low-pass, band-pass) Week 3 Lesson 1: Transistors, vacuum tubes, opamps, amplification, power gain, single-stage amplifiers Lesson 2: Converting sound to electrical signals –microphones and guitar pickups, converting electrical signals to sound – loudspeakers Week 4 Lesson 1: Electric guitar electronics, pickup design, pickup placement and tone, volume control circuits, tone control circuits Lesson 2: Overview of a simple guitar amplifier, power supply, volume control, preamp, tone control, power amp section Week 5 Lesson 1: Designing speaker enclosures, basic principles, interaction of speaker driver with the cabinet, why a cabinet at all? Lesson 2: Speaker designs for home stereo, crossover networks, guitar amplifier (open) speaker enclosures, bass amplifier (closed and vented) speaker enclosures Week 6 Lesson 1: Building the guitar amplifier, how to solder, getting the amp to work - systematic testing and troubleshooting Lesson 2: Visualizing sound waves, frequency content and tone, signal modification in electro-acoustic systems, tube amplifiers and distortion, wah pedal, talk box

Take a look at this, lampizator measured the standard power supply for the duet http://www.lampizator.eu/LAMPIZATOR/Squeezebox/SQB-Power/squeezeballs.html

I have a squeezebox duet as transport feeding my Tda1541 dac, changed the std wall wart for a 12v battery with 9v regulator there is no comparison sound is so much better now those wall warts are absolute garbage and don't deserve any place in a hifi system.