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Old 29th August 2007, 12:14 PM   #1091
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Default get lost...

i was just finishing my BOM according to F4 R0 04/17/07 when i noticed a new version (06/04/07) with different bias/jfet/shunt resistors.

I browsed the post but i cannot find informations about that, what's the difference between the 2 versions?

I've got many 0,5R 3W resistors handy, can i use them as source resistors and simply adjust P1 to measure 265mV across them?

Many thanks,

Marco
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Old 29th August 2007, 06:04 PM   #1092
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That information does exist in this thread, but suffice it to
say the revisions were minor, and related most specifically
to providing more margin and protection to the input JFETs
gainst overdrive on the input.

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Old 30th August 2007, 05:02 PM   #1093
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Many thanks Mr. Pass!
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Old 30th August 2007, 06:49 PM   #1094
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Hi Marginwalker !

You can have a look here :

http://www.diyaudio.com/forums/showt...67#post1245667
Post # 287, BOM to download according to the last Mr PASS input (Many thanks Mr PASS).
Hope it will be usefull.
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Old 30th August 2007, 11:49 PM   #1095
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Well, I think I'm going to bite the bullet and build some of these amps for the big speakers I'm in the process of building. To the darkside tubeboy goes.

I'll send off an order to Peter soon for boards for 8 channels.
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Old 31st August 2007, 04:45 PM   #1096
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Default There is an update to the 6Moons Review...

http://www.6moons.com/audioreviews/firstwatt6/f4.html



I started laying out the parts on a piece of MDF last night to figure out how I am going to arrange things. I can't wait to finish....then on to a preamp that can drive them.

C
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Old 31st August 2007, 05:36 PM   #1097
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Quote:
Originally posted by korben69
Hi Marginwalker !

You can have a look here :

http://www.diyaudio.com/forums/showt...67#post1245667
Post # 287, BOM to download according to the last Mr PASS input (Many thanks Mr PASS).
Hope it will be usefull.

Thanks Korben! Now it's time to find a chassis and build my first Pass project
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Old 31st August 2007, 06:19 PM   #1098
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Hi Marginwalker, you're wellcome !
Same for me, time to find a chassis, I've got the heatsinks.
It's my first PASS amp, maybe others to come...
Your search could be usefull to me, hifi2K ?
Let us know about your search.
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Old 31st August 2007, 07:05 PM   #1099
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Default Re: There is an update to the 6Moons Review...

Quote:
Originally posted by chrismercurio
http://www.6moons.com/audioreviews/firstwatt6/f4.html
I expect yet another soon.

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Old 31st August 2007, 07:14 PM   #1100
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Quote:
Originally posted by korben69
Hi Marginwalker, you're wellcome !
Same for me, time to find a chassis, I've got the heatsinks.
It's my first PASS amp, maybe others to come...
Your search could be usefull to me, hifi2K ?
Let us know about your search.

i'd like to build a chassis by myself because ready made are a bit expansive (100+ euro). tomorrow i'll take a tour in the wrackage dump looking for a couple of big ugly heatsinks

if you want a good looking chassis try http://www.modushop.biz, maybe you'll be able to customize a galaxy chassis to your own heatsinks.
Take a look to 'pesante dissipante' line too, it looks good and has got huge heatsinks too. you can spare yours for the next project

Otherwise, you can use heatsinks to build a solid structure with nuts&bolts and finish it with plexy (easy and good looking, i'll try this way).

Ciao

Marco
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