rds
Headphoneus Supremus
- Joined
- May 4, 2008
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Pete - Thanks for the detailed information. That's just what I needed to know before placing my order.
Originally Posted by J.D.N /img/forum/go_quote.gif x3 Thats excellent info. Due to living in England it's hard to get access to the range of capacitors that you guys do in the US. Could someone please run their eye over my choices bellow and OK them? They are partly chosen by what i can get hold of, and partly due to price (what i could get cheap-ish). Surprisingly they dont seem that expensive at all, but then ive never bought that many caps so i cant really compare. C1: 150uF 63v: MUNDORF TYPE - br63 - Bipolar electrolytic C2/C4: 0.1uF 63v [630v]: Clarity Cap - metallized polypropylene C3/C5/C6: 470uF 63v: MUNDORF TYPE - br63 - Bipolar electrolytic Also, is it possible to use 2W resistors instead of 1/4W? |
Originally Posted by Ferrari /img/forum/go_quote.gif The Mundorf BR63 bipolar electrolytic are developed for speakers manufacturing/industry. It's generally larger than generic (polar) electrolitics of the same value and can be considered as a step up from generic (polar) electrolitics. So, you can use these BR63 bipolar electrolytics in this build, the size should not be an issue here. Regarding the resistors, 2W power resistors can be used, however power resistors are very often 5% tolerance resistors (check this for sure)! It's better to use 1% tolerance resistors instead of 5%, so try to buy 1/4W 1% tolerance resitors if the 2W type is indeed 5%. Resistors are not so expensive, though. The MKP for C2/C4 is OK ! |
Originally Posted by J.D.N /img/forum/go_quote.gif Cheers Ferrari, the 2w resistors are indeed 5%. Found a few places selling 1/4W but they are all 5%. The BOM says 5%, am i missing something? |
Originally Posted by HypnoLobster /img/forum/go_quote.gif How did you more successful people mount the heatsinks? The ones I have (the right part number, I swear!) only have little metal lugs protruding from the bottom. Nothing to screw or bolt to. |
Originally Posted by Gross /img/forum/go_quote.gif I ordered those too... I pulled the pins out with a pair of pliers and then tapped the holes with a 4-40 tap, and used screws to mount them. It would have been easier to buy heatsinks without pins, but oh well. |
Originally Posted by HypnoLobster /img/forum/go_quote.gif What are the pins intended for? All I can think of is soldering the heatsink to a board or something as such. |
Originally Posted by bhjazz /img/forum/go_quote.gif I found a few old-school smoke shops in Seattle, and was considering using a cigar box. If the heatsinks are screwed to the box, though, how much heat would get transferred? Would the whole thing go up in flames on a particularly loud passage? |