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Old 20th May 2012, 12:57 AM   #21
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no steel shield for them either...
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Old 20th May 2012, 01:01 AM   #22
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Buzz what voltage will you be running your turbo? and towards what wattage?
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Old 20th May 2012, 01:03 AM   #23
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here's a shielded one that works for standar F5
Antek - AS-4218
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Old 20th May 2012, 01:09 AM   #24
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32V and exactly like schematic. That should yield about 6A+ Ipk, good for about 200W Class A into 6 ohms, which is my speaker impedance, and about 300W dissipation per channel. Damn yhats hot. If kept it will drive my woofers in an active system.
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Old 20th May 2012, 01:18 AM   #25
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wow so little over 4A bias on +/-42V rails?
that will be on the limit for the diodes to conduct?
or are you gonna use more then 4 pairs of outputs?
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Old 21st May 2012, 12:19 PM   #26
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OK ordered the matched fets today.

Currently working on 1+2 idea for the case, but in dual mono topology (2 monoblocks)
I love it for its price and looks, without sacrificing anything in functionality.

If I manage to steal some time from work, I will try to make a 3d model of the layout
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Old 21st May 2012, 12:27 PM   #27
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I sometimes see big transformers being accused of unwanted vibration effects...
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Old 21st May 2012, 12:32 PM   #28
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thats often the case with cheap one's. thicker the wire, bigger the chance
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Old 21st May 2012, 01:05 PM   #29
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I was browsing through some transformers and (instead of going for 18V) I was thinking that I will at some point try to turbo it, so I might as well go for 24V transformers from the start (32V rails as per the pre-V1 version in the Turbo article).

Plus, in the 24V range I am finding some nice 500+ VA from mouser and Hammond with free shipping.
The Antek ones will cost almost the same including shipping....
Plus, the Hammonds go as high as 1KVA (although way too heavy) which is really tempting for tests since they cost only 10 euros more... and I agree with you guys, vibration is my concern too.
I have tried Hammonds before, and they tend to vibrate as you go up in VA on the same Voltage (120VA with 12V rails was nice and silent. 225VA was vibrating like crazy)

External PSU is quickly becoming an attractive choice too...
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Old 21st May 2012, 01:11 PM   #30
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I'm feeling more & more certain this building log is going to get very interesting, very soon!!!
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