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Old 29th April 2009, 10:49 AM   #2331
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Hi there, I was just wondering how noisy the fan is? Could it be suspension mounted on some grommets? Is this a ball bearing fan? and is it 110v, 240v or 12v.

thanks, Your work here is incredible and renews my spirit and I am an owner of a KSA150.
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Old 8th May 2009, 01:50 PM   #2332
lgreen is offline lgreen  United States
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Default K-Amp

Have you guys seen the K-Amp?

K-Amp E-Bay Auction

they say its like the KSA 100.

I see it uses the wrong transistors (it uses the very nice Sankens) but i'm not sure how similar the schematic is. What do you think?
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Old 8th May 2009, 02:04 PM   #2333
john65b is offline john65b  United States
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One pair output device per channel?

It says power supply included, but pic looks to be a smallish 10,000uf cap/rail.

Buy it now kit is $199 not including the heatsink that looks to be about 10x too small...
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Old 15th May 2009, 08:07 PM   #2334
Fix is offline Fix  Sweden
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DIY-Heatsink page updated with new prices.
Also included Softstart & DC Sence PCB's.

http://www.hififorum.nu/forum/topic.asp?TOPIC_ID=74088

PM for mail me for more information.
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Old 15th May 2009, 10:30 PM   #2335
Fix is offline Fix  Sweden
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Some quick photos...

Slowly moving forward...


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Old 26th May 2009, 10:22 PM   #2336
Fix is offline Fix  Sweden
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For all of you who follow this project...

PSU / Softstart Done and Tested OK.

If lucky it's soon time to test the amplifier...
Hopefully it will sound good too, else lots of hours and $$$ is wasted....

RC Filter Resistor + Cap
Click the image to open in full size.

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220v side
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Softstart
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After a long evening, PSU and Softstart works...
Click the image to open in full size.
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Old 26th May 2009, 10:32 PM   #2337
K-amps is offline K-amps  United States
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Default Re: K-Amp

Quote:
Originally posted by lgreen
Have you guys seen the K-Amp?

K-Amp E-Bay Auction

they say its like the KSA 100.

I see it uses the wrong transistors (it uses the very nice Sankens) but i'm not sure how similar the schematic is. What do you think?
Can one trademark one's DIYAUDIO ID?.... Guess it won't matter... I guess the K stands for knock-off...


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Old 26th May 2009, 10:34 PM   #2338
troystg is offline troystg  United States
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Location: In a dream... Please don't wake me.
It looks very nice...

May I suggest twisting the mains power wire in that bundle? that 220VAC may cause some issues..

But outstanding construction so far.
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Old 26th May 2009, 11:18 PM   #2339
stoc005 is offline stoc005  United States
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Default K-Amp on EBay???

How can the guy sell Leach amps?? I wonder if he has permission to do that as well. It looks pretty legit, I guess.
Bill
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Old 28th May 2009, 12:45 PM   #2340
Fix is offline Fix  Sweden
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Everything is ready for final testing.

Emitter voltage: 625mv +-2mv
Rails: 57.1v ( no load )
DC offset: 0-0.2mv

One channel is tested OK yesterday, will check once more.
Will test other channel tonight.

Will see how far I will come tonight.

Pictures will come...
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