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Old 17th November 2005, 02:46 AM   #1
Wyloch is offline Wyloch  United States
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Default My First Power Amp

Okay, folks - done with headphone amps and interconnects - I want to build something to power my Klipsch RF-3s. Currently using a Carver m500t, but heard that it's a coloring amp.

I have this in mind:
http://sound.westhost.com/project19.htm

I want to build four, so that I can biamp each speaker. My reasoning for this is so that I can get more volume for less work, and therefore produce less heat, and prevent the built-in protection circuitry from kicking in.

Questions:
1) What is the SIM? Can I just neglect it and R8 and R9?
2) Are F1 and F2 fuses?
3) C5,6,6 and 8 appear to be polar capacitors - what type?
4) How to I provide +-35 V using a standard 120V wall oulet?

All the guides I see talk about PCBs. I don't want to use one; I want to come up with my own original board layout, because that's half the fun of the hobby to me.

Oh, and one more question:
5) Is this a good project?? I'm okay spending about $300 for the whole thing, even before casing options.
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Old 17th November 2005, 02:56 AM   #2
Wyloch is offline Wyloch  United States
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Ah I see - I need a power supply - like this one?

http://stiftsbogtrykkeriet.dk/SiDown...3875/GAINC.pdf
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Old 17th November 2005, 06:26 AM   #3
bsrawat is offline bsrawat  United States
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Default Re: My First Power Amp

Quote:
Originally posted by Wyloch
Okay, folks - done with headphone amps and interconnects - I want to build something to power my Klipsch RF-3s. Currently using a Carver m500t, but heard that it's a coloring amp.

I have this in mind:
http://sound.westhost.com/project19.htm

I want to build four, so that I can biamp each speaker. My reasoning for this is so that I can get more volume for less work, and therefore produce less heat, and prevent the built-in protection circuitry from kicking in.

Questions:
1) What is the SIM? Can I just neglect it and R8 and R9?
2) Are F1 and F2 fuses?
3) C5,6,6 and 8 appear to be polar capacitors - what type?
4) How to I provide +-35 V using a standard 120V wall oulet?

All the guides I see talk about PCBs. I don't want to use one; I want to come up with my own original board layout, because that's half the fun of the hobby to me.

Oh, and one more question:
5) Is this a good project?? I'm okay spending about $300 for the whole thing, even before casing options.



Dear,
+- 35v may be obtained by a step down transformer having current capacity of around 5-8 amps (if required) with bridge rectifier or 35-0-35v ac (sec.) with two diodes(unregulated) and a filter component of 7800mfd and an inductor. This will give you a good +- DC output from an intput of 120 v ac to power you amp

bsrawat.
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Old 17th November 2005, 06:44 AM   #4
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Default Re: My First Power Amp

Quote:
Originally posted by Wyloch
5) Is this a good project?? I'm okay spending about $300 for the whole thing, even before casing options.
You'll spend a lot less + get lots of help around here if you pick up a kit from http://www.chipamp.com.
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