This is not just another gainclone

[Steve Eddy]

Originally posted by Fred Dieckmann
That's her on the extreme left side.

Cool. Can she hook me up with the babe in front of her?

Oh, and welcome back.

se

[Steve Eddy]

Originally posted by Peter Daniel
It all depends how big is your power supply.

Bah! Richard Simmons has strong muscles but he's STILL a girly-man. Don't be in such denial, Peter. Get in touch with your inner girly-man.

se

[UrSv]

Originally posted by Fred Dieckmann
I think Grataku can. Get out your checkbook as they are very expensive new. I think the ones I got are over $50 new! I guess you don't want to hear about the $30 Vishay bulk foil resistors got for under a dollar each......

If you buy the RIFAs in an expensive place in Sweden they are about USD 30 at qty 1 and USD 27 at qty 10.

[Peter Daniel]

UrSv,

Is there a good chance to find them surplus in Europe?

[Christer]

Originally posted by Peter Daniel
UrSv,

Is there a good chance to find them surplus in Europe?

The only place I know of is www.svalander.se (there are
english pages for the shop) but he has mostly high-voltage
types.

I actually live just over an hours drive from the Rifa head office,
which is also a production plant, but I guess I would not find
a shop selling cheap electrolytics there.

[Peter Daniel]

I'm not surprised. I also thought that I would be able to buy Atlas air tools cheap in Sweden, but they were more expensive than in America.

[Matttcattt]

which should i use, or should i get samples of them all?

OPA512
OPA541
OPA548
OPA549

[Cradle22]

Hi!

Originally posted by Matttcattt
which should i use, or should i get samples of them all?

OPA512
OPA541
OPA548
OPA549

I think you should go for 548 or (if you want more power) 549.
In fact I'm just listening to OPA548, and I like it very much. OPA548 can be used exactly the same way like the GC with LM3875, except that you have connect pins 3 & 4 (leave pin 7 open or break it off).
OPA549 can roughly be used the same way, but you have to provide extra GROUND, and also connect Ilim to V-

I would say that both are at least equal to LM3875, if not better (BurrBrown has an excellent reputation for it's audio ICs, and both ICs are (correct me if I'm mistaken) newer developments than the often used National ones...

I will definitely check out 549, as well...

Bye,
Arndt

[Bricolo]

I just thought about something:

we could try active power supply regulation

[UrSv]

Originally posted by Peter Daniel
UrSv,

Is there a good chance to find them surplus in Europe?

Originally posted by Christer


The only place I know of is www.svalander.se (there are
english pages for the shop) but he has mostly high-voltage
types.

I actually live just over an hours drive from the Rifa head office,
which is also a production plant, but I guess I would not find
a shop selling cheap electrolytics there.

For surplus (albeit new) Svalander is only place I know of. As I have posted before there is a guy at http://www.hififorum.nu/ that sells some really cheap. USD 10.50 for the 10.000 uF/63V or USD 70 for 8 pieces. He also had 82000 uF/63 V at USD 41 each or USD 140 for 4 peices. That's pretty cheap.