Hi Everyone,
This wiki is for the group purchase of Seifert KL-271 and KL-273 heat sink profiles. The original thread for this group purchase can be found here:
https://www.diyaudio.com/forums/showthread.php?postid=627647#post627647
Performance and Size Data
The precise physical dimensions and drawings of the heat sinks can be found in the links below:
KL-271 Standard 8" lengths:
https://www.seifert-electronic.de/images/pics/kl-271z.gif The KL-271 is 12" wide, 8" long, and 3.25" thick (standard stock). Each piece is rated at 0.18c/w, which should be able to dissipate approximately 105 watts with a 25c temperature rise or about 125 watts with a 30c temp rise. Each piece weighs approx 12.5 pounds (5.6 kilos). Minimum total order is 10 pieces.
KL-273 Standard 8" lengths:
https://www.seifert-electronic.de/images/pics/kl-273z.gif The KL-273 is approx 17.25" wide, 8" long, and 3.25" thick (standard stock). Each piece is rated at approximately 0.17c/w, which should be able to dissipate approximately 120 watts with a 25c temperature rise, 150 watts with a 30c rise. Each piece weighs approx 17.1 pounds (7.75 kilos). Two of these should be sufficient for a mono Aleph-2 or mono Aleph-X at about 100wpc. Minimum total order is 5 pieces.
Both profiles are quoted in black anodize, no surface milling, and no drilling.
Pricing
This is the FINAL price quote for these heat sinks. These prices DO NOT include shipping charges. Payment details are below:
Pricing on the standard KL-271 (12" x 8", 0.18c/w, black anodize) is as follows:
| Qty | FINAL Quote |
| 10-49 pcs. | $62.67 each |
| 50-99 pcs. | $59.19 each |
| 100+ pcs. | $56.37 each |
Pricing on the STANDARD KL-273 (18" x 8", 0.17c/w, black anodize) c/w rating will be confirmed shortly.
| Qty | FINAL 8" Quote |
| 6-10 pcs. | $126.67 |
| 11-25 pcs. | $120.64 |
| 26-50 pcs. | $116.49 |
Payment & Shipping
The bad news is that the distributor (RHM Technology, Inc.) will not be able to individually ship heat sinks to everyone who wishes to participate in the group purchase.
The good news is that they are located about 2 hours from where I live, so I can pick up the order in my van. I will then be shipping heat sinks to those that have ordered. Depending upon how many people are interested, I will not be able to mail all of the heat sinks in a single day. Please, some patience will be appreciated while I prepare the packages...
In order to do this mailing, I need to know your city and postal code so that we can calculate shipping charges. I was planning on shipping via USPS, but I just discovered that they charge a "non-machinable" fee for all packages that weigh in excess of 35lbs. This fee nearly doubles the cost of shipping a heavy box. Therefore, it looks like UPS offers the cheaper shipping rates. These rates can be estimated here:
https://wwwapps.ups.com/calTimeCost
PayPal Payment Address:
My paypal address is: esantanen (you know what goes here) yahoo {you know what goes here, too} com. If you'd rather send a money order, use the address above and I'll send you my surface mailing address.
Because of the way my
PayPal account is set up, I request that you please add 3% to your payment as that is what
PayPal will charge me to process your payment.
This Group Purchase is Now Closed - The Order Has Been Submitted
Delivery is in approx 4-6 weeks (Early August).
Order List:
| # | User Name | City | Postal Code | Qty of KL-271 | Standard 8" KL-273 | Custom 9" KL-273 | Comments |
| 1 | Eric | Lewisburg, PA, USA | 17837 | | 6 | | |
| 2 | Rpafenberg | Raleigh, NC, USA | 27607 | 2 | | | |
| 3 | Alain Dupont | Montreal,QC,Canada | H4C2M6 | 4 | | | |
| 4 | gengis | Davenport, IA, US | 52807 | 8 | | | Depending on cost |
| 5 | BFNY | Clifton Park,NY USA | 12065 | 2 | | | |
| 7 | | | | | | | |
| x | Totals: | x | x | 16 | | | x |
