wonfor

  1. Colin Wonfor

    Wonfor amps and kits for sale

    For sale:- EWA M40 power amp £2000 phone and balance in 40W/8R auto or manual start ECO Power stereo EWA M40p pre amp with MC/MM Aux balance in and out. £2000 KIT AMPS 5W Stereo SECA completed kit amp stereo £300 15W stereo A/B desk top amp completed kit £280 30W stereo A/B completed kit amp...
  2. Colin Wonfor

    The Reverse RIAA PCB and Circuit FOC

    Please enjoy making this the Gerber File and Circuit are FOC and for fun. Try on a CD or digital input. This version I did in 1977 and uses leaded component for ease of build. Gerber Files here:-   https://seca.freeforums.net/thread/311/reverse-riaa-pcb-circuit-foc
  3. Colin Wonfor

    DIY DC Blocker Plus

    FOC I have drawn a nice DC blocker for those sadly haunted far to often hum from transformers. The Gerber files so you make you own, best as group cheaper PCB's and tolling costs. It has few toys i.e. auto ON timed use (approx 60mins) But do feel free to down load an use...
  4. Colin Wonfor

    4000 mobile phone batteries

    Well so far the retirement has gone well, ha ha, not a chance I have been more busy doing more designs than ever before. This include new cable idea and construction, so I decide to retire at 99yrs 364 day, just to keep busy. I love walking and the last year that was not possible, that is due...
  5. Alan

    ABCaudio / EWA

    EWA: Elsdon Wonfor Audio, all designed by Colin Wonfor. He build the amplifiers, we build the cables - all accessible via the ABCaudio webshop : link. Colin Wonfor has an impressive pedigree as an audio designer, being the man behind AC Magnum, Inca Tech and later Tellurium Q. He is a chemist...
  6. 9

    EWA Q20, Inca Tech Claymore and Colin the genius.

    Those of suitable years will most likely know of Colin Wonfor for his various amplifier models and cables over the past few decades. For me that started with the Inca Tech Claymore amp I bought in my early days of Hi-Fi, it replaced the also legendary NAD 3020A. At the time I was using Celestion...
  7. Colin Wonfor

    PCB for DIYers

    M50/s Pre amp Line in and a DAC . Input 1 DAC. 3 Line, Output 2 Non Balance Pre. 1 Balance Pre, SECA HP Again supplied with cct and BOM. Cost £100 + P&P This project for DIYer is based on the Q20 circuit but it can give you power level greater than 50W. The top PCB is the Power Amp...