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  3. 1199397103

Hum in ARC Ref 3 not on 0 but 1-103 light buzz

I'm suddenly experiencing a strange phenomena with my ARC Ref 3 (250 hrs on the tubes). On the 0 setting of the volume "dead quiet" with 1-103 a constant sound like the sea whispering noticable on 2 meters from the speakers. Any idea where this comes from? It is from both the two speakers. Tube problem?

Thanks in advance!
broederen
broederen OP
22 posts
 
I've got some new developments.

After performing several tests it was better to change to a Kronzilla SX with XLR input.

KR Audio was very professional and supportive in this move. I'm very happy with it. I expect the SX to arrive end April 2008. Keep you updated!

Cheers,

Broederen
broederen OP
22 posts
 
The Kronzila SX-XLR has arrived. I installed it and......... dead, dead quiet in combination with the ARC REF3 (even with max volume of ARC REF3). Of course the SX still has to settle itself (according to KR audio it will take around 30 hrs). Til now I'm very happy! Thanks KR Audio!

The difference :

The SX-XLR model has an input sensitivity of 2Vrms/100kOhm @ 50W compared with 0.75Vrms/47kOhms @ 50W for the SXI-S. This was input sensitivity was the issue, now it is finally solved!
lak's avatar
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lak
4,623 posts
 
Glad to hear the good news :)
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