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Old 14th December 2002, 04:04 PM   #101
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Quote:
Originally posted by Peter Daniel
Dennis,

I thought you were planning for frugile pile Aleph X. Two heatsinks per side will make a very big amp. I wouldn't recommend it, because you have to run a lot of long wires and connectionns inside. It's better to do two smaller amps and if you need more power, go bi-amp and stack them on top ea. other.
Peter, thanks for your comments. The frugal Aleph-X is what
I plan on building. The 'parallel heatsink' question was
more for my friend with the Apogees, who will need to build
high current Aleph-Xs.
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Old 14th December 2002, 04:11 PM   #102
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Quote:
Originally posted by Peter Daniel


The way things go now, I think the will be an interest in such a thread (but better check, someone started similar one before).
I will check. I ended up getting my transformer for 12.5 VAC with 4 pairs of secondaries, 1kVA total. This should account for the high current draw of a stereo Aleph-X.

--
Brian
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Old 14th December 2002, 04:18 PM   #103
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jh6you,

Just to help you visualise better my approach to amp design, here is a preview of my latest project. This make the whole, stereo amp (2x25W). The only additional thing is transformer and a bridge, which are separate.
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Old 14th December 2002, 04:20 PM   #104
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Peter,

This is certainly a deal that is can't be refused.

I think there are a couple of quesions that need resolution to better understand how this process would work.

1. Does the shipping cost per 4 or 8 units represent rho-Theta subdividing the order and shipping to the various non-local destinations?

2. Are there any Canadian or US taxes, international shipment fees, duties, or tariffs that need to be factored in?

3. What method of money transfer would work best, such as PayPal?

I am sure other people have questions as well.

Thanks much for all your efforts,

Chris Cassell
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Old 14th December 2002, 04:24 PM   #105
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Quote:
Originally posted by Peter Daniel
Ask the guys from 47Laboratory. They claim the shortest signal path in their amp: only 35mm. Maybe it's just me, but recently I try to make everything as compact as possible. I also like the purity and simplicity in design. Big chassis just doesn't allow it. I have my amps standing on a floor right now. If I put them one behind the other, they would look ugly and big. If I put them one on top of the other, they look really cool.
Sure, I agree with your principle. I however think it does not applicable to all diyers. I suppose
you have read this: http://sound.westhost.com/madashell8.htm#gaincard.

JH
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Old 14th December 2002, 04:30 PM   #106
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Quote:
Oh yes, mosfet will be directly mounted on to the heatsinks. Bars are just for the structural integrity of the chassis.
Personally I would prefer not to drill the heatsinks except for the mounting points for the L-bars or L-corners. The reasoning for this is that heatsink can be used for whatever type of transistor case in the future. Just change the L-bars for different transistors, then I can compare or play with different banks of transistors. Have a bank of TO-3 for JLH or other class A and a bank of TO-247 mount for AlephX on different L-bars, may Aleph-2. Then no need to damage the heatsinks with different holes to on it.

Any other ideas are welcome,
Chris
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Old 14th December 2002, 04:34 PM   #107
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Peter

Your latest 2x25W amp is killing me. Great!

JH
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Old 14th December 2002, 04:48 PM   #108
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Quote:
Originally posted by chris ma

...I can compare or play with different banks of transistors. Have a bank of TO-3 for JLH or other class A and a bank of TO-247 mount for AlephX on different L-bars, may Aleph-2. Then no need to damage the heatsinks with different holes to on it.

Any other ideas are welcome,
Chris
Now that would be fun experiment. You can build the basic
Aleph you've chosen and then plug in different banks of
output devices and compare their sonic characteristics.
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Old 14th December 2002, 04:50 PM   #109
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>>1. Does the shipping cost per 4 or 8 units represent rho-Theta subdividing the order and shipping to the various non-local destinations? <<

Yes

>>2. Are there any Canadian or US taxes, international shipment fees, duties, or tariffs that need to be factored in?<<

USA orders might be subject to duties, but I'm not sure. How is it with Plitron?

>>3. What method of money transfer would work best, such as PayPal?<<

For me the best way will be Money Order in Canadian Funds, maybe even written directly for R-Theta.


I will discuss shipping and other details with them on Monday.
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Old 14th December 2002, 05:17 PM   #110
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Quote:
Originally posted by Peter Daniel
jh6you,

This make the whole, stereo amp (2x25W). The only additional thing is transformer and a bridge, which are separate.
That's very neat, Peter!

Curious: What design, and do you have heatsinking to add?
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