How can we improve a Krohn-Hite 4200A Oscillator to reduce it's distortions ?

gaetan8888 · 23rd October 2011, 08:45 PM

Hello

How can we improve a Krohn-Hite 4200A Oscillator to reduce it's distortions ?

And anybody do have the schematic of this oscillator ? (I can't find it with Google)

Thank

Bye

Gaetan

klewis · 26th October 2011, 01:15 PM

Quote:

Originally Posted by gaetan8888

Hello

How can we improve a Krohn-Hite 4200A Oscillator to reduce it's distortions ?

And anybody do have the schematic of this oscillator ? (I can't find it with Google)

Thank

Bye

Gaetan

For the schematics, look here: Audio Circuit Denmark

As for improving the performance, first step, tune up the unit following the directions in the service manual, after that, replace volume pot with a good 10 turn, consider a battery supply.

Ken

gaetan8888 · 26th October 2011, 04:20 PM

Hello

This web site do have only the Krohn-Hite 4400 and 4402, they don't have the Krohn-Hite 4200.

Thank

Bye

Gaetan

klewis · 26th October 2011, 05:21 PM

I wasn't aware that they made a 4200A, maybe recheck the model number...

gaetan8888 · 26th October 2011, 05:31 PM

Hello

I've recheck the model number, and I really have a Krohn-Hite 4200A Oscillator.

Do you know the difference between the 4200A and the 4402 model ?

Thank

Bye

Gaetan

kevinkr · 26th October 2011, 05:54 PM

Plenty of service manuals available for the 4200A, the only problem is you will have to pay for one..

klewis · 26th October 2011, 06:18 PM

I don't know the difference between 4402 and 4200. The factory may have service manuals for you. Yes, they will charge you for it, but, maybe you can get one for the specific revision number/letter of your device. I found that on mine, there are differences between the schematic and part numbers for the revision number I have 4402A(d) and the drawings 4402A(f). I recently ordered some replacement parts, they were very helpful. Just go to their website.

gaetan8888 · 27th October 2011, 08:24 PM

Hello

I finally found the schematic diagram of my Krohn-Hite 4200A.

How can I improve it to reduce it's distortions ?

Thank

Bye

Gaetan

23rd October 2011, 08:45 PM	#1
gaetan8888 diyAudio Member Join Date: Apr 2007	How can we improve a Krohn-Hite 4200A Oscillator to reduce it's distortions ? Hello How can we improve a Krohn-Hite 4200A Oscillator to reduce it's distortions ? And anybody do have the schematic of this oscillator ? (I can't find it with Google) Thank Bye Gaetan

26th October 2011, 05:54 PM	#6
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	Plenty of service manuals available for the 4200A, the only problem is you will have to pay for one.. __________________ www.kta-hifi.net

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26th October 2011, 04:20 PM	#3
gaetan8888 diyAudio Member Join Date: Apr 2007	Hello This web site do have only the Krohn-Hite 4400 and 4402, they don't have the Krohn-Hite 4200. Thank Bye Gaetan

26th October 2011, 05:21 PM	#4
klewis diyAudio Member Join Date: Sep 2007 Blog Entries: 36	I wasn't aware that they made a 4200A, maybe recheck the model number...

26th October 2011, 05:31 PM	#5
gaetan8888 diyAudio Member Join Date: Apr 2007	Hello I've recheck the model number, and I really have a Krohn-Hite 4200A Oscillator. Do you know the difference between the 4200A and the 4402 model ? Thank Bye Gaetan

26th October 2011, 06:18 PM	#7
klewis diyAudio Member Join Date: Sep 2007 Blog Entries: 36	I don't know the difference between 4402 and 4200. The factory may have service manuals for you. Yes, they will charge you for it, but, maybe you can get one for the specific revision number/letter of your device. I found that on mine, there are differences between the schematic and part numbers for the revision number I have 4402A(d) and the drawings 4402A(f). I recently ordered some replacement parts, they were very helpful. Just go to their website.

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