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Old 26th February 2004, 02:58 PM   #11
Did it Himself
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I microprocessor that runs at mains frequency wow that must have some computing power!!!

What an absolute scam, they could have at least come up with a decent excuse why they need to rip you off for that amount. If they know that much about electronics then 1) I wouldn't trust them to do ANY fiddling inside any kit of mine and 2) just goes to show yet again how supposed hifi experts use tech-speak to confuse people into buying stuff and make exaggerated unsubstantiated claims.

Even if there is a micro in there (which there probably isn't), it will have it's own timebase and not be anything to do with the mains frequency.
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Old 26th February 2004, 03:05 PM   #12
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yeah thats what I figured...

I phoned up Krell and told them this and he said he was unable to comment about Absolute Sounds voltage conversion procedure - suffice to say that I had to go with them if I wanted the conversion. He said he couldn't reveal the combination to me either because that was priviledged information!! Why are they having such major issues in revealing the combinations?? They have got their money for the amp - I still have the receipt!! What more do they want
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Old 26th February 2004, 03:20 PM   #13
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Default Re: Krell AGAIN!

Quote:
Originally posted by Audiofanatic
Hi guys,

Krell does it again! I have a friend that had the same problem.
He was afraid that he would blow the whole amp if he did it himself.
Well It's verry simple in almost all KRELL's you have two switches.
Both have a text on it. 120 -in the first possition 240 in the other possition or 1 - 2 . So if it is set to 1 it'll work on 120 volts in possition 2 it'll work in 240 volts.
DON'T FORGET TO PUT BOTH SWITCHES TO THE SAME VALUE!

That's It! If it's with wires or jumpers (I don't think so) than look for a SERVICE MANUAL!


All the best and please let us know if you succeed!


Best regards,


Audiofanatic
Hi Audiofanatic,
A servicemanual for a Krill? You must be kidding. Krill isn't that food for wails? Pearls for the swines, throwing to the wolves.....
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Old 26th February 2004, 03:42 PM   #14
sreten is offline sreten  United Kingdom
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just my 10p's worth :

A bit of elementary tracing should sort out how the
voltage switches work and what each one is for.

240V over 220V if given the choice always.

The only other possible issues I can think of is that :

The conversion changes the mains input socket ?

Any filtering on the mains input ? needs to be changed for
240V, as the components will have the wrong ratings.

Probably the above two are the same thing, as a
filter if fitted is part of the mains input socket.

Mains input fuse needs to be derated for 240V ?

sreten.
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Old 26th February 2004, 04:06 PM   #15
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Hi Sreten,

Thanks for your help. I have no idea how electronics work but I am happy to work around with them. I'm going to get myself a voltmeter and I'm going to get this baby to work just to spite Absolute Sounds. I would have been happy to pay the 150 at one stage but 550 is just offensive!!

You can see a photo here: www.theoneills.org.uk You can see at the bottom right the three red switches. The one on the far left is SW3 (set at 2), SW2 is set at 1, and SW1 (far right) set at 2. I have seen a photo of a Swedish machine set at SW3=1, SW2=1 and SW1=2. Apparently Swedish voltages vary between 120V and 230V depending where in Sweden you are... this model was in Stockholm. I'm therefore deducting from this that SW3 determines the frequency and that 1=50hz. I'm also assuming that this Swedish machine is operating at 120V since SW1 and SW2 are same as American setting....correct me if I'm wrong!

This means that there are only three different combos left - one of them will ruin my machine (i.e. will set voltage to 100V) , the other two will be ok (i.e. 220V and 240V). These combos are (SW1 + SW2): 1+1 ; 1+2 ; 2 + 2. What do you reckon chaps? Which one is lucky??? How would I go about determining which one was right with a voltmeter (and i'd need noob lanaguage and terminology ).

Once more, thanks for any help that you can give me. It is much appreciated!!
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Old 26th February 2004, 04:18 PM   #16
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What you could do is measure the resistance across the live and neutral connections of the mains input socket. Then if you suspect SW1 and/or SW2 change the voltage (which they may do given other replies) set these to what you think for 240v and then see if the resistance you measure on the mains socket has quadrupled.

This method may be slightly flawed if there is a mains input filter as it may contribute sdome resistance as well, but it's a start.

I can't believe how rubbish Krell are being over this. Obviously trying to keep their dealers sweet.
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Old 26th February 2004, 04:42 PM   #17
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Question Krill Sweet

Quote:
Originally posted by richie00boy
I can't believe how rubbish Krell are being over this. Obviously trying to keep their dealers sweet.
I did not know Krill was sweet.

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Old 26th February 2004, 05:04 PM   #18
sreten is offline sreten  United Kingdom
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the wiring to the transformer suggests it has two primaries
both with 10% taps for 110/120 and 220/240.

Which suggests your amp is set for 110, and the
swedish amplifier is set for 120, or the other way round.

Either way 50 / 60Hz is not part of the equation.

Using a volmeter set on resistance the 10% switch will change
resistance readings by a minor amount (~10%), however the
correct setting will give x 4 the present reading across the input,
once you have this set the other switch to the higher reading.

The only input components I can see are a transient suppressor
and a capacitor, both I assume are rated to 240V.

sreten.
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Old 26th February 2004, 05:06 PM   #19
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ok i'm going to buy a voltmeter tomorrow and get this done (shops are closed now ). i'll let you know how i get on...
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Old 26th February 2004, 05:08 PM   #20
K-amps is offline K-amps  United States
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Quote:
Originally posted by brianboru
Hi Sreten,


You can see a photo here: www.theoneills.org.uk You can see at the bottom right the three red switches. The one on the far left is SW3 (set at 2), SW2 is set at 1, and SW1 (far right) set at 2. I have seen a photo of a Swedish machine set at SW3=1, SW2=1 and SW1=2. Apparently Swedish voltages vary between 120V and 230V depending where in Sweden you are... this model was in Stockholm. I'm therefore deducting from this that SW3 determines the frequency and that 1=50hz. I'm also assuming that this Swedish machine is operating at 120V since SW1 and SW2 are same as American setting....correct me if I'm wrong!

Once more, thanks for any help that you can give me. It is much appreciated!!

Edited based on Streten's observations. I missed the blue white wires even though the logic is the same...
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