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What? You re' still working on your amps? He,he...
Now I am evolving to a frugal type of DIY (given the present world economic situation) and after my post I managed to build my first chipamp, but one with a special regulated supply, evolved from the regulator that I recommended before for the superDAC, named the PowerReg by his inventor:
http://www.pinkfishmedia.net/forum/showthread.php?t=39306
Good for my low power amps projects!
This LM3886 based amp is for my eldest daughter and costs around US$100 to build. It sounds incredibly good (for any money) even with simple parts: now comes the tweaking...
http://picasaweb.google.com/maxlorenz24/TeddyReg/photo#5161652793070188882http://www.pinkfishmedia.net/forum/showthread.php?t=39306
The regulator is the little PCB with many Tantalum caps on the back panel.
I can't zoom in into my speaker binding post tweak: the wire goes through the binding post, it traverses it and comes out to make direct contact to the speaker cable itself, bypassing binding post's low quality metal. The later only contributes with its grip. The most noticeable improvement is fuller midrange, with more colors and softer presentation.
Low cost means active multiamplification possible for any speaker ;-)
Quote:
P.S, are you already listening to Big Ben speakers?
Sorry, I did not catch it...do you mean these?
http://picasaweb.google.com/maxlorenz24/DIY/photo#5147615230415638674
My beloved activelly biamped Autographs...
Cheers,
Mauricio
Hi Mauricio,
Good to see you are now working with the Superdac again!
The longer settle time for the opamp, caused by the 1-pole filter
you placed behind the opamp is of no consequence. Nelson Pass has
done some research to find out the minimum "slew" time an amp should
have, and the slewtime for this very small capacitor has no real
influence. Actually, because the capacitors are not present anymore
in the loop-back it will be faster than the dac you had.
I am glad you like the sound!
I'm still busy building my Aleph X monoblocks. And I am busy with my
UGS modules. These are N-FET differential amplifiers that I will use
to replace my X-BOSOZ style Mosfet outputs I am using now in my DAC.
Greetings, Harry
P.S, are you already listening to Big Ben speakers?
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