The Krell KS1-A is the real Krell beast, with two separate mono preamps each with its own chassis and each with its own power supply each having its own chassis.
@SteveGuttenbergAudiophiliac
Күн бұрын
Ben, outstanding work!
@NovaluxStereophonic
Күн бұрын
@@SteveGuttenbergAudiophiliac Thank you Steve!
@robertwear1675
Күн бұрын
I'm glad you went back to the original LED colors. I'm so tired of blue.
@welderfixer
Күн бұрын
Sir, your repair bench is so neat and clean. What a great setup. I can only dream of having such a nice place to work. That is if I ever get the smarts to repair all of the gear I would like to. I wish I could send you my 3 NAD amps to you for repair. There is a very small chance that I could ever do the quality of repair the you do. 👍👍to you and your expert work!
@SuperMcgenius
6 сағат бұрын
Great work, your attention to detail is fantastic 👍
@abijeetrs6522
Күн бұрын
Most over kill preamp I have seen so far. Krell never fails to amaze me. 🤑
@robertwear1675
Күн бұрын
Excellent job. The Spectrol wire wound volume controls tend to wear out and need to be replaced or rebuilt. I had to replace one in a KBL because when it was turned all the way down it would still allow sound to come through. I was told by Krell it's a pretty common problem.
@drdyna
Күн бұрын
Very nice! I love Krell gear. I had a bunch of those gnarly brown caps in my KSL too, some of them were crumbling apart. I like this one though, but I think I drink too much for separate left and right level controls, lol.
@stevesmyth4982
4 сағат бұрын
Nice quality film caps used throughout the signal stages but I'm surprised to see residual flox from Krell's manufacturing.
@brotherbrian5625
4 сағат бұрын
You should recap your car every year! 😵
@mauricedemel6142
Күн бұрын
Hello sir. If you have schematic of this preamp please send me. Thankyou.
@NovaluxStereophonic
Күн бұрын
I was not able to locate a schematic for this unit unfortunately :(
@marcvdfv8431
Күн бұрын
the ROE caps are from Roedenstein, they are really bad, most other european caps do a good job.
@NovaluxStereophonic
Күн бұрын
Frako, also not so good…
@marcvdfv8431
18 сағат бұрын
@@NovaluxStereophonic some of the old philipses... mwea... 🤑
@poormanselectronicsbench2021
Күн бұрын
Thanks for the tour of the preamp, and sharing some work technique. Kind of crazy output power on that preamp, I can't see where that much is necessary to drive almost any amp, but you cant argue with it's numbers at what would be regular output levels. @ 19:15 It was a good idea to cut the lead instead of leaving them full length, but, I would have also considered getting the board in a vertical position so in heating the pad/lead area, it would transfer heat horizontally to the top / component side of the board a bit better, as I have always gotten better results with a desoldering - vac if I oriented the PCB in a vertical position. The dual external power supplies are crazy overkill IMO, considering the amount of power that preamp actually needs. You could easily negate the dual supply scheme by powering them off of the same AC breaker / line circuit as the large amplifier they are connected to, and the voltage sag from the load of the amp would drag both of them down anyways. Other high end manufactures like Audio Research and Threshold got by just fine with a single internal or external supply.
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