Convert Krell 300iL to European voltage - Page 35 - diyAudio
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Old 22nd July 2011, 06:46 PM   #341
Join Date: Jan 2005
That i wanna see pics of if its true :P

If true, the heatsinks and main transformer could be reused, actually the amp is stull usable if u wire inputs directly to amp boards and rip of the digital crap out.
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Old 22nd July 2011, 06:53 PM   #342
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it is nuts, right? no of-course not just joking. relax.I will sell it on eBay to US bidders. what else to do with that 60Hz only junk?
can't find any TekkoAudioLabs. Links?
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Old 22nd July 2011, 07:03 PM   #343
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I dont have a website, im not open to the public, its just a dream im living.

Underneath all this im just another amateur just like the noobs in here asking questions.
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Old 22nd July 2011, 07:21 PM   #344
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thanks for enriching my slang knowledge. noob(s). has to be the Internet thing. forums etc.
Idea with bypassing all digi control is not bad, but schematics then needed.
unfortunately it has nice relays switched resistors as volume control too.
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Old 23rd July 2011, 01:31 PM   #345
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Originally Posted by ogssound View Post
Dear Jampivot:

Yes, when the circuit is not coneted the red led go on, and when connected the red led go on too, but before when the circuit is not connected the red led go on and the display show FER, and when the circuit was connected the led go on and the display show --- blink and the amp power on/off/on/off every 20 seconds aprox. Now in every situation only the red led go on and nothing else. I think something happen with the microchip when i test for graph the circuit and test the real form of signal input in pin 31.

Could you help me?

I have a Krell KAV-400 XI that I need to convert from 115 to 230 V.
I have heard that I will need a special chip to change from 60 to 50 Hz.
Can some one confirm this?
Or give more detailes on the subject?I need full information.I'm engeneer.


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Old 23rd July 2011, 05:30 PM   #346
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Join Date: Jul 2011
Z, read from page 1 - all this thread is about converting Krell audio products. some of them have(like my 300iL) chip that will work only with 60Hz, some needs just simple switch flipping or similar rewiring of primary winding of power supply transformer. wish you belonging to the second group.
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Old 23rd December 2011, 12:40 PM   #347
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Join Date: Jul 2011
Originally Posted by piqachu View Post
hello, I want to convert my krell hts 7.1 U.S. 120V/60Hz to do work in Europe 240V/50Hz.
toroidal transformer is:
part: TC0075-0013
cust: hts2
input: 2x0-100-120 volts

Fuse F1: 250v no amperage, dark gray

processor U1: motorola

U3: M114636
U4: M2146136

SW1: 2
SW2: 1
SW3: 2

the back of the unit, next to the IEC power there 50/60hz

I read the whole post and I think I have to put the switch to 2-2-2 for 240V.
I have to do something else?
how we recognize a processor that works in 60hz to another who works in 50/60hz?
thank you for your help

I have a problem.Could you help me?I have a KRELL 7.1 showcase processor,I bought from US,but I live in UK,so I can 't use,because the frequency 50Hz in UK,voltage 230V.

do you offer me any modify in Krell? upgrade kit,or build 60Hz clock signal generator?

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Old 30th March 2013, 10:24 AM   #348
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Join Date: Feb 2005
Location: sweden
Default Krell hts-2

Originally Posted by BenY View Post
Hi Guys,
I`m willing to halp any of you that currently have a problem with Krell equipment.
Email me with model numbers.
Hi can you help me to convert a 110 us to 220 european 50 hs ?
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Old 24th May 2013, 11:55 AM   #349
muadib is offline muadib  Russian Federation
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Join Date: May 2013
Location: Sank-Petersburg
Originally Posted by omalley34male View Post
Hi can you help me to convert a 110 us to 220 european 50 hs ?
I can solve the problem of 60 Hz , krell good works 220v 50 hz, see photo.
Attached Images
File Type: jpg 20130522_022658.jpg (411.0 KB, 185 views)
File Type: jpg 20130521_230344.jpg (717.8 KB, 173 views)

Last edited by muadib; 24th May 2013 at 12:24 PM.
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Old 15th August 2013, 10:53 PM   #350
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Join Date: Aug 2013
Hello, is it possible to change voltage 115v to 230v in krell evo Evo 505 sacd / cd player?
do anybody made it with evo Evo 505 , need current software for chip motorola,
Thanks Alexander.
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