A Baby A Class HP Amp/Pre FOC.
This little beast is a little complex but I suspect you can do it.
The Gerber will be available on my SECA data store.
Gerbers here:--https://seca.freeforums.net/thread/312/baby-class-amp-pre-foc
Please read for available items:
(A new thread is in order, I think, due to requests to hear other EWA cables. I would ask please that discussion of EWA tour kit be posted here in a single thread, so as to not fill pfm up with EWA/ABCaudio stuff.)
The EWA cable system range is designed by...
Claymore come in six version of issues.
Iss 1 With Hitachi H-Pak FET's, these become obsolete. Fitted with a MC stage I was not happy with so scraped it.
Iss 2 With Toshiba MOS FET's but still no MC stage
Iss 3 As Iss but with a plug in feature for MC stage
Iss 4 Upgraded to a better Toshiba MOS...
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
Circuit Diagram
PCB Layout...
We have a lot in common vorsprung,
durch ...I built class A Amps with my good friend Colin Wonfor TOCA (touch of class A) Seca (single ended class A) look him up the man is a genius his list of acomplishments is truly astounding ...this is my set up at home my single ended Amps run at 1200 w...
This is a test mule for a new amplifier by Colin Wonfor in a scrappy project box (the amp is in the scrappy box, not the Wonfor).
It's only managing about 18W class A, and that much again in A/B due to a lack of serious heat sinks. But it keeps doubling down as impedance halves, to one ohm...
Top left PCB convert Balance to un-Balance,Top right PCB is the twin bridge PSU with 88,000uF Caps and the 12V supply for the Balance PCB and the ON LED drive. The bottom two PCB's are the power Amp, they will be running 35W P-P Class A.
NOTE:- The balance PCB can have a variable gain control...
Thought it best to start a new thread for the LS-40's; a continuation from here: https://pinkfishmedia.net/forum/threads/elsdon-wonfor-audio-ls-25-speaker-cables.203590/page-44#post-4162896
First immediate impression; excellent, holographic with speedy transients - true to EWA form
I will attempt to explain to explain the EWA loudspeaker cable range, with my apologies if I am not clear! We have: LS-25, LS-40, LS-50, LS-80.
EWA cables look very similar to each other, so they are being visually re-refreshed end of September/October 2020 - partly to look more professional...
The first EWA USB interconnect, this has been a long time coming! Designed by Colin Wonfor to be the best high performance cable possible.
Available at ABCaudio (just the first few pre-production items), until the main manufacturing run arrives in September.
I'm using one now between an SOtM...
OK a 3M length measure as below:-
Capacitance at 3 metres = 100pF Each single conductor red or black
Inductor on each single conductor is 3.3uH at 3 Metres
Leakage/Common Mode inductance Less Than 0.9uH at 3 Metres
Resonant frequency a single conductor red or black 15MHz at 3 Metres
Total...
The new IC-25 interconnect from EWA (Elsdon & Wonfor Audio) is now in stock at ABCaudio.
A complex and interesting design which features a revised conductor and lightweight, low mass RCA plugs, plus unique insulation material only used by EWA and a silver braided screen. IC-25 is carefully...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.