demons_wing said:
http://manuals.harman.com/hk/Service Manual/hk6100 sm.pdf
Ask and you shall receive.
I just purchased an HK6100 for 20 bucks from Value village and was searching for a schematic so I can do some brutal mods to it. 
I am going to turn it into a hybrid amplifier using a tube pre stage, without the high voltage!
I am going to turn it into a hybrid amplifier using a tube pre stage, without the high voltage!
Darn, for some questionable reason I can't actually view the schematic linked here, could some one please be of help? Other wise I have the unreliable tedious task of staring at the board for a few hours and copying it. 
Missing schematic
It looks like HK may have removed the file from their server... no other info available.
It looks like HK may have removed the file from their server... no other info available.
The long boring, painful, greuling redrawing way it is.... 
If I am successful, I will put Harman Kardon to shame for being so cruel, by posting the schematic they would not provide, muahahahahahaha! 😀
If I am successful, I will put Harman Kardon to shame for being so cruel, by posting the schematic they would not provide, muahahahahahaha! 😀
Well, so far no schematic..... 
but just a note for someone who wants to do an upgrade to the amp, I found a transformer of much higher quality and more beef that some how turned out to be the exact 28.5V+/- used on the HK6100, it came from a blown up Kenwood KA-3500 I think...... 😀
but just a note for someone who wants to do an upgrade to the amp, I found a transformer of much higher quality and more beef that some how turned out to be the exact 28.5V+/- used on the HK6100, it came from a blown up Kenwood KA-3500 I think...... 😀Attachments
The link above is working for me - 3 and a half years on since the original post 🙂
I am using this amp at the moment after my Krell KSA150 clapped out. To say there is a difference is an understatement. I WANT MY KRELL BACK!!!!!
I am using this amp at the moment after my Krell KSA150 clapped out. To say there is a difference is an understatement. I WANT MY KRELL BACK!!!!!
It does work!
Hey, you are right null object, it works for me now. This will make my rebuild and insane modding allot easier as I can at least keep some of the original circuitry.
My HK6100 died not too long ago after using it on a preamp that blew an output transistor in a noisy fasion, only one channel works now and not sure why because the outputs did not blow out, but the wimpy driver transistors would get really hot, so maybe they died.
Don't really care either way because I only payed 20 bucks for it just to be experimented with any ways. 😀
Hey, you are right null object, it works for me now. This will make my rebuild and insane modding allot easier as I can at least keep some of the original circuitry.
My HK6100 died not too long ago after using it on a preamp that blew an output transistor in a noisy fasion, only one channel works now and not sure why because the outputs did not blow out, but the wimpy driver transistors would get really hot, so maybe they died.
Don't really care either way because I only payed 20 bucks for it just to be experimented with any ways. 😀
must have been a glitch, the link worked for me this time.....
very strange.... i just noticed the tone controls are part of the power amp feedback network..... it can be done, but most often tone controls are part of the preamp. this actually directly changes the frequency response of the amp itself....
very strange.... i just noticed the tone controls are part of the power amp feedback network..... it can be done, but most often tone controls are part of the preamp. this actually directly changes the frequency response of the amp itself....
So, after some brut-force searching I found the shiny. I hope it will help.
Mine HK started resonating and then dropping out one chanell after about half a hour of 30% operation. I measured 10mV DC on output durring load, therfore i assumed, that dropping out was not speaker protection. Maybe it is just overheating and new thermal compound will help.
- Status
- Not open for further replies.