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Old 24th February 2012, 06:27 PM   #621
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Quote:
Originally Posted by UKToecutter View Post
suitable replacements
Half this club is still waiting for the Linear System 74/170 duo.
Getting the P-channel right is very difficult, i gathered, the Japanese are not about to tell.
(Fab guys who speak Japanese, and have a deep understanding of the culture, are likely rare)

You can get the ones you need for an F5T build from me, for your hard labour.
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BOXES for crying out loud
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Old 24th February 2012, 06:31 PM   #622
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Jacco,

You are a true gentlemen.....
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Old 24th February 2012, 06:41 PM   #623
tehrkn is offline tehrkn  Greece
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UKToecutter,

I will also jump on board for this project with boards for 5 channels and some extra psu pcbs for future use.
So:

1. 10 output boards
2. 5 v3 main boards
3. 10 psu boards

Thank you in advance for all the hard work you've done till now.
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Old 24th February 2012, 06:46 PM   #624
a.wayne is offline a.wayne  United States
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Quote:
Originally Posted by Zen Mod View Post
still nobody asked for circular output pcbs arrangement ?

Trouble maker .......

Quote:
Originally Posted by jacco vermeulen View Post
Already a circular PS board, should be enough.
Well we have been going around in circles ......
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Old 24th February 2012, 06:50 PM   #625
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Quote:
Originally Posted by jacco vermeulen View Post
Half this club is still waiting for the Linear System 74/170 duo.
Getting the P-channel right is very difficult, i gathered, the Japanese are not about to tell.
(Fab guys who speak Japanese, and have a deep understanding of the culture, are likely rare)

You can get the ones you need for an F5T build from me, for your hard labour.
Just had a look at Linear Systems web site.
They do not do a single P channel device of any flavour!!!

I think it's going to be a long wait !!!
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Old 24th February 2012, 06:52 PM   #626
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Quote:
Originally Posted by tehrkn View Post
UKToecutter,

I will also jump on board for this project with boards for 5 channels and some extra psu pcbs for future use.
So:

1. 10 output boards
2. 5 v3 main boards
3. 10 psu boards

Thank you in advance for all the hard work you've done till now.
Wow...
You planning a 5:1 surround?
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Old 24th February 2012, 06:59 PM   #627
rdk845 is offline rdk845  United States
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Quote:
Originally Posted by Horio View Post
Andy,

On the V3 output board, is there a way we can shave a little bit off the width (maybe make it a 225mm long board). For those of us who are wanting to build balanced mono-blocks, ........
Are those building balanced V3 with 250mm or shorter heatsink, planning to use forced air?
If not could anyone let us know plan on heatsink configuration?

Building V3 means one wants class A power and rail voltage substantially higher than those V2, so assuming 100W into 8 ohm and rail voltage substantially higher than 32V , heat dissipation per channel for balanced seems to be something like 400W per channel or more. Since stacking heat sinks on top of the other drastically reduce heatsink efficiency, I don't get how this heat dissipation requirement could be met with 1 monoblock per channel with normal "cheap" 250mm heat sinks....

Last edited by rdk845; 24th February 2012 at 07:06 PM.
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Old 24th February 2012, 07:04 PM   #628
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Quote:
Originally Posted by rdk845 View Post
Are those building balanced V3 with 250mm or shorter heatsink, planning to use forced air?
If not could anyone mention their plan on heatsink configuration?

Building V3 means one wants class A power and rail voltage substantially higher than those V2, so assuming 100W into 8 ohm and rail voltage substantially higher than 32V , heat dissipation per channel for balanced seems to be something like 400W per channel or more. Since stacking heat sinks on top of the other drastically reduce heatsink efficiency, I don't get how one could meet this heat dissipation requirement with 1 monoblock per channel with normal "cheap" 250mm heat sinks....
Hi,

I assume they will mount a the V3 output boards on seperate heatsinks, so 2 x 250mm heatsinks for a single channel
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Old 24th February 2012, 07:06 PM   #629
CeeVee is offline CeeVee  Portugal
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Andy,

I just realized that distracted with PCB details discussions with you i forgot to put myself down on the list for 2 V2 boards.
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Old 24th February 2012, 07:10 PM   #630
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any PSU's?
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