Bottlehead Forum
Bottlehead Kits => Crack => Topic started by: lextek on March 01, 2012, 04:58:10 PM
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Putting the Speedball kit together today. New type of fun for me, PCBs. Soldering the the lugs for the heatsinks was kind of "scary". I didn't want to get the PCB too hot, but the lugs are pretty thick. Should I have just put the iron on the lug itself? I kind of leaned the iron against the lug and worked my way around it. Looks like it's soldered......
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Bob, heatsinks on a PCB are fun. I usually preheat the solder lugs before I insert it into the board, then I use a solder bridge method. Just put some solder on the iron tip before you place it at the joint, this helps get things flowing. It is a PITA if you ruin pads and lift traces, that's why I don't think I'll build any more fully PCB based components. I like to tweak and soldering and desoldering repetitively is a quick way to trash a board. Hope this helps.
Cheers,
Shawn
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I havent done a ton of heatsinks but I've never worried much about overheating the board because the sink itself is wicking some heat away as you solder. I dont recall how I set the iron to do the work, I think the tip is mainly on the sink itself. But I havent had any problem flowing the solder for a nice joint. Maybe ignorance is bliss.
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I guess I got it right. Another fun build. Very, nice upgrade. Noticed better bass extension and seperation. Really sounds great. Overall a "cleaner bigger" sound. If that makes sense.
Now I wonder how it would sound with Sennheiser HD700s or 800s. Maybe not the 700s seems they are a lower impedance, 150.
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Bob, I've been using my AKG K702s with the Crack. They are 62 ohms imp. And the Crack drives them well. I think 62 ohm imp. is teetering on the point of what the Crack can drive. I don't think it would have any trouble with 150 ohms.
Cheers,
Shawn
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Anbody notice any changes after a period of "burn in"?
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My K601's seem to be a good match as well at 120 ohms. Not my go-to phones but I like them especially for live music.
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Not that I'm ready to run out and spend $1000 on a pair on HD700s. Really can't see that happening. Maybe wait for a pair of used to pop up on Head-Fi when the flavor of the month changes.
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I'd like a pair of T1's but not in the budget in the near future. Then again, if I put funds that I've allocated for that 1911 toward the purchase of the Beyers instead, I would be alot closer :-P