I have bought some F2 boards in the group buy.
I want to get this amp right and use good quality and correctly rated components.
I would appreciate peoples views on which makes and type of resistors would be best suited to the F2.
I want to get this amp right and use good quality and correctly rated components.
I would appreciate peoples views on which makes and type of resistors would be best suited to the F2.
I believe circuit topology comes first, so I am not keen on using exotic components in building my F2.
Resistor rating - please refer to the document in FirstWatt download. I only use industrial grade stuff. For DIYer, Digikey can be a good source.
Once you build it using standard components, I believe you got the majority of the performance level set. Playing around with components are then more of a personal taste or choice.
Resistor rating - please refer to the document in FirstWatt download. I only use industrial grade stuff. For DIYer, Digikey can be a good source.
Once you build it using standard components, I believe you got the majority of the performance level set. Playing around with components are then more of a personal taste or choice.
Puffin said:
Metal film resistors are a good start where possible.
Buy the rest from a high class distributor.
Keep away from ebay !
use the vishay/dale metal film -- I think they are the type "RN".
they come in nifty hot dog brown color, so your boards will look like they are covered with tiny wienerschnitzels.
JJ
they come in nifty hot dog brown color, so your boards will look like they are covered with tiny wienerschnitzels.
JJ
I user RN55D from mouser for most resistors. They are usually less than 10 cents USD.
If I go big bucks, I use PRD 1/4 watt for signal path, and mills for Power resistors.
I plan on Panasonic power resistors and RN55d for the F2...
If I go big bucks, I use PRD 1/4 watt for signal path, and mills for Power resistors.
I plan on Panasonic power resistors and RN55d for the F2...
toufu said:
When properly loaded fromthe 24v power supply, the onboard votage of the F2 is ~20v. I think the L1 brings the V down. I would feel fairly safe with 25v ones.
Can anyone tell me the thermal rating and rough size of the heatsinks required for the
F2?
Can anyone reccommend a source that I can get these from?
Conrad heatsinks in Aus would be good because of the excahnge rate!
F2?
Can anyone reccommend a source that I can get these from?
Conrad heatsinks in Aus would be good because of the excahnge rate!
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