A DIY event in Denmark?

[Magura]

Originally Posted by a.wayne

Huh ?

1. Make the amp more efficient?
2. why would have so much low freq Sq wave tilt sound good, wouldn't this not have an negative effect on the bass?

Forgive my assumptions as i was taught for years to run away form tilting waveforms of any kind ...

regards,

1) Because the inductor theoretically can swing twice the rail voltage.

2) Because the music is not a square, but a bunch of sine's, which it has no problems supplying with great force. The square shows more about rise time, than freq. response.


Magura

[Magura]

You could give the Zen 7 article a read, to get a general idea of what we have been up to.


http://www.passdiy.com/pdf/zen-v7.pdf


Magura

[a.wayne]

Thanks Magura ,

There is less fog now ...............

[Magura]

If you got the cash for making such an amp, I sure would recommend giving it a shot.

Lot's of work, compared to the CCS version, but worth every minute/$$$.


Magura

[a.wayne]

I'm now starting on a CViller F5 with "mods" . is there a good/better/best approach with the inductor , as to type , size etc? .......

[Zen Mod]

Originally Posted by Magura

If you got the cash for making such an amp, I sure would recommend giving it a shot.

Lot's of work, compared to the CCS version, but worth every minute/$$$.


Magura

naah ...... that's amp for sissies

[Magura]

Originally Posted by Zen Mod

naah ...... that's amp for sissies

My inductors are bigger than yours!

And like if that isn't enough, my dad is fatter than your dad


Magura

[Magura]

Originally Posted by a.wayne

I'm now starting on a CViller F5 with "mods" . is there a good/better/best approach with the inductor , as to type , size etc? .......

Good/better= huge iron core inductor=huge transformer=2kVA transformer.

Best= even bigger air core bifilar inductor.

Even better= 2 friends to help you move any of the above


Magura

EDIT: F5 with mods?

[a.wayne]

Originally Posted by Magura

Good/better= huge iron core inductor=huge transformer=2kVA transformer.

Best= even bigger air core bifilar inductor.

Even better= 2 friends to help you move any of the above


Magura

EDIT: F5 with mods?

Ahhh. errr. Hmmmm .... does big iron /air core have a number 5 ,10 , 20 mh

[Magura]

Originally Posted by a.wayne

Ahhh. errr. Hmmmm .... does big iron /air core have a number 5 ,10 , 20 mh

The big iron is more a matter of avoiding saturation, so according to my experience, we are talking at least a 1kVA transformer, and preferably more.

The air core is a lot easier to deal with, regarding saturation, as there is no such thing.
For an air core, you can get away with 2 x 80mH. Now that doesn't sound all that scary, but you also need low DCR, which makes it somewhat more problematic.
I made mine of 12 gauge copper wire, which gives a DCR of 2R4 per winding, as I recall.
What I do recall very clearly, is the weight of them: ~22kg a piece!


Magura