Krell KSA-250 recapping

Service for a monster KRELL ...In perfect order he said. Not really when you open it up. This unit needs a total recapping.

Category:

Science & Technology

Tags:

• krell
• audio
• ksa-250
• amplifier
• transistor
• stereo
• sound
• bass
• ohm
• loud
• repair
• capacitor
• service

[SlayerSalamanda]

@fragglan could you please tell me the name of the song that you used for this video?

Cheers.

[fragglan]

@SlayerSalamanda . It's a audio swap from youtube... i don't remember the title. sorry.

[nicklytras]

nice work!! i have the same amplifier and for sure i have to recapping.. some day, but i have to find the same caps/brand becouse if i use othe brand sound change and then is not Krell.

btw whats the name of this song?

[fragglan]

@nicklytras Well... Then use Sprague and Mallory for normal purpose use. Sprague in driver and output boards and Mallory in the softstart. I prefer using better quality caps when i restore electronics. Sprague is not a bad capacitor at all, but a modern design cap as Panasonic FC is well known to be a good choice for audio applications. My unit still sounds like a KRELL !

[Menningerproperties]

holy crap, nice job, i was worried at first when I started watching because I did not know if you really knew what you were into! I bought a KSA 300s recently that had service done and these amps are amazing (and great space heaters as well!) Now enjoy listening!

[fragglan]

@Menningerproperties Yes, it was many hours of work. But if you do it your self, you now every part is changed and you can spend endless time to resolder bad joints. I found more than twenty of them, and one joint that was forgotten! A little bit of loosy quality check i suppose. I think this amp will stay in my home for a long time. And to listen to it brings you to heaven !

[gratisnepkut]

Where can I buy those silicone pads?

[Sirflatch]

@Menningerproperties I have a Special Addition KSA 250s and I also have the KSA 300s I love both of them!!! For different reasons!! They R Awesome Amps!!! :o)

[ThisIsSATA]

Can someone tell me which is better? a) Unbalanced KSA80 (passive cooled) or b) KSA100, active cooled.

Both are recently serviced and cost the same (€1250).

[Sirflatch]

@Menningerproperties Yes they R Amazing Amps, I have both the KSA 250, KSA 300S, the 300 doesn't get nearly as hot as the 250 @ idle!!!

[BoudewijnvanHouten]

Superb effort! Real nice and informative movie.

I had model Second Series Rowland 7's that burned their inrushcurrent resistors but there were no other components around them luckily.

[kenstcyr]

I made all the aluminum components for this amp in New Hampshire USA at a company called AAVID Thermalloy. You wouldnt believe the care that goes into making the base and heatsinks. The are handled with white cotton gloves after machining.