Go Back   Home > Forums > Commercial Sector > Group Buys

Group Buys Members group buys

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 11th March 2004, 02:51 AM   #11
Coulomb is offline Coulomb  England
diyAudio Member
 
Coulomb's Avatar
 
Join Date: Jul 2002
Location: Ancaster, Ontario
Quote:
Originally posted by bzo
I might be interested in 48". I'm building 3 40-50w Aleph-Xs and am planning to go with 2 12"x8" heatsinks per channel.
So I looked it up, an 8" section of this profile while rise 32 Deg Celsius above room temperature while dissapating 120 watts. a 12"x12" section dissapates the same power at a 23 Deg rise above room temperature.

Anthony
  Reply With Quote
Old 11th March 2004, 03:34 AM   #12
bzo is offline bzo  United States
diyAudio Member
 
Join Date: Jan 2004
Location: San Francisco, CA
I'm not going to be running that much power, though an 8" section still seems to be doable at that level.

I'm thinking about going with 17V/5A, which dissipates 170W. So if each 12x8 heatsink is dissipating 85W, it looks like a 25C rise.
  Reply With Quote
Old 11th March 2004, 10:18 AM   #13
Coulomb is offline Coulomb  England
diyAudio Member
 
Coulomb's Avatar
 
Join Date: Jul 2002
Location: Ancaster, Ontario
Quote:
Originally posted by bzo
I'm not going to be running that much power, though an 8" section still seems to be doable at that level.

I'm thinking about going with 17V/5A, which dissipates 170W. So if each 12x8 heatsink is dissipating 85W, it looks like a 25C rise.
Of course Monoblocks!!

I was thinking in Stereo.

Regards

Anthony
  Reply With Quote
Old 11th March 2004, 01:39 PM   #14
Coulomb is offline Coulomb  England
diyAudio Member
 
Coulomb's Avatar
 
Join Date: Jul 2002
Location: Ancaster, Ontario
I have a reduction in price on Extrusion E3096 to $27 US per foot, this is based on a 48 foot purchase.

Each cut at the factory would be an additional $3. If you want the cut section anodized that would be $14 US each.

If we only buy 24 Feet, then the price is $28 US per foot.

Anodizing maybe cheaper to get done buy a local shop, the last time I had it done in Toronto, last year it was $100 CAD for 8 x 10" sections.

Anthony
  Reply With Quote
Old 14th March 2004, 04:49 AM   #15
diyAudio Member
 
Join Date: Feb 2004
Location: Ajax, Ontario
Hi. Would it be cheaper to get it anodized without getting it cut? As it would be only 1 piece, set-up might be easier, hence a possibly lower price. I can always get it cut here, although the cut ends would be the original aluminum color. Another consideration is whether or not you can only get multiples of 4 feet, as I would prefer 5, maybe 6 feet. Otherwise, it looks like a pretty good price. Any idea on shipping costs? I live just outside of Toronto so I could pick it up there.
__________________
so....... if you could just.....fork it over..
  Reply With Quote
Old 14th March 2004, 04:56 PM   #16
Coulomb is offline Coulomb  England
diyAudio Member
 
Coulomb's Avatar
 
Join Date: Jul 2002
Location: Ancaster, Ontario
Hello Jeff, I did ask about anodizing before the cuts and there response was the same as yours. I would be happy to toss your order in with mine for the anodizing locally.

The bars are in 8 foot lengths, I may ask to have them cut in half to make shipping easier. I plan on cutting the 4 foot section into 4 equal length peices anyway.

More later

Anthony
  Reply With Quote
Old 16th March 2004, 05:29 PM   #17
Coulomb is offline Coulomb  England
diyAudio Member
 
Coulomb's Avatar
 
Join Date: Jul 2002
Location: Ancaster, Ontario
Well I have another quote for a different profile from R-Theta. Profile # 65340 is the same profile as last years group buy.

This year's price is $54 CAD per 12" section which includes a finished product including Black Anodizing. That's FOB the Toronto Warehouse, shipping can be calculated at approximately $1 per pound. The 12" piece is about 11 pounds times the number of pieces required, equals your shipping costs.

We need a minimum of 50 pieces to make the price break of $54 or less. All taxes would also apply of course.

Here is some info on this extrusion.
Attached Images
File Type: jpg 65340_0001.jpg (29.7 KB, 582 views)
  Reply With Quote
Old 16th March 2004, 09:04 PM   #18
Coulomb is offline Coulomb  England
diyAudio Member
 
Coulomb's Avatar
 
Join Date: Jul 2002
Location: Ancaster, Ontario
I have a finalized price for the R-Theta extrusion above.

12" Finish cut and Anodized will be $52.50 Ea. CAD assuming a group buy of 50 Pieces or more.

If we get to a 100 pieces the price drops to $49.58 CAD ea.

Thier is a setup charge of $50 that will be split amoungst the number of buyers, not the number of pieces. I think that sounds the most fair.

Regards

Anthony
  Reply With Quote
Old 16th March 2004, 09:20 PM   #19
diyAudio Member
 
Join Date: Feb 2004
Location: Ajax, Ontario
Default 65340 heatsink

I think I need to clear up any confusion right away as to the length of the heatsink I need. I'm building 2 Aleph5s (monoblocks) with another friend. I figured an 8" length of 65340 heatsink, on each side, would be sufficient for anAleph 5 monoblock. So, 12" in length is more than I need, however, if the cost of the 12" in a group buy is less than the price of an 8" bought separately, then I'd buy the 12" and throw a couple extra mosfets on the output and increase the bias.
__________________
so....... if you could just.....fork it over..
  Reply With Quote
Old 16th March 2004, 09:53 PM   #20
Coulomb is offline Coulomb  England
diyAudio Member
 
Coulomb's Avatar
 
Join Date: Jul 2002
Location: Ancaster, Ontario
Default Re: 65340 heatsink

Quote:
Originally posted by Jeff Reeves
I think I need to clear up any confusion right away as to the length of the heatsink I need. I'm building 2 Aleph5s (monoblocks) with another friend. I figured an 8" length of 65340 heatsink, on each side, would be sufficient for anAleph 5 monoblock. So, 12" in length is more than I need, however, if the cost of the 12" in a group buy is less than the price of an 8" bought separately, then I'd buy the 12" and throw a couple extra mosfets on the output and increase the bias.
Hello Jeff, Exactly....

2 Pieces of 8" extrusion would almost certainly cost 80% of the 12" cost in the group buy plus a min order amount plus a setup charge of at least $50.

Regards
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Large Extrusion Group Buy Canadian/US TomWaits Group Buys 5 21st May 2006 05:37 AM
North America Heat Sink Group Purchase Eric Group Buys 102 25th October 2005 07:10 AM
Heat sink group purchase for USA & Canada Eric Solid State 0 4th May 2005 02:48 PM
How much heat sink is necessary? rosss Pass Labs 11 23rd February 2003 05:23 AM
New heat sink group buy Brian Donaldson Pass Labs 5 25th January 2003 10:13 AM


New To Site? Need Help?

All times are GMT. The time now is 07:23 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2