L'Amp: A simple SIT Amp

[vdi_nenna]

The harmonica is such that you can feel it is in the room - never heard anything so close to live-music from a amplifier before.

I get a bit of this with the Zen 9, but I'm dying to hear the SIT!!!!

Best and Enjoy!

Vince

[nicoch58]

Olav , nice work !

[Zen Mod]

Originally Posted by prooptiki

Still missing some parts to start building my SIT, I was thinking to try the following output changes. Can we avoid the mid and Super tweet caps if I change the signal polarity trough my pre and connect SIT (-) to (+) of my passive crossover caps (SIT for mid and Stweet only, F5 for the woofer)?
Thanks

there is no need for changing polarity , except on speaker cables - and only in case of chasing perfect polarity

schm is good - each driver having dedicated cap

[vdi_nenna]

Would using the large cap, and not an inductor after it, indicate you intend to use the natural roll-off of the woofer?

[OlavHaal]

Originally Posted by nicoch58

Olav , nice work !

At last- All is well - amp playing Ryan Adams-Ashes and Fire - and it is everyway as good as you all said - if my ClassD sounded good - this amp is revealing the music in a total honest way!

But i used Obligatos 10uf as input capacitors and some really good resistors. The only thing I could have used instead of Caddock FilmCaps was Vishay FilmCaps. But I don`t think that will matter much.

So now I have my B1 with two transistors in ClassA - and my L`Res with ONE transistor to give such honest sound. Less is More


Hope to get a couple more hours playingtime before my copter leaves(will need 3 hours bus also)

Best to all

Olav

[Dennis Hui]

Very nice work Olav. Really like the case you've made.

Now if only I can kick myself in gear to build the thing...

Cheers,
Dennis

[OlavHaal]

Hi again all!

I said in my last post - The only thing I could have used instead of Caddock FilmCaps was Vishay FilmCaps. But I don`t think that will matter much. - But the words that was intended was Caddock FilmResistors and Vishay FilmResistors.
But I guess everyone knew what I was talking about!

Sorry for my mis-spelling.

Have a nice building-experience eveyone.

Olav

[prooptiki]

Originally Posted by vdi_nenna

Would using the large cap, and not an inductor after it, indicate you intend to use the natural roll-off of the woofer?

For the woofer I am gonna use my F5 and SIT for mid - S.tweet!
I gonna also try to drive the woofer with Sit and as I said I use a passive crossover after the SIT caps, my crossover use caps for the mid and tweet so there I can avoid the Sit's caps by connecting the (-)SIT to (+) crossover, the woofer still use the inductor after the Sit cap.

Thanks Zen

[Michael Rothacher]

Really nice, Olav. Congratulations.

[OlavHaal]

Yes - at last SOUND - and tonally rich and involving. But I`m out at sea without music for 2 week now - time to plan the last few fixès on my mono`s.

And maybe think about a chocke(but there is not much space available inside for the moment. Have to do something if and when......

For the moment - your ideas have blossomed in many different directions Michael - and in such nice ways!!


Best to all - from the NorthSea.

Olav