o_holter

Responses from o_holter

Aesthetix Io strange behaviour
I got it back today, working fine. Morten said he could find no other fault, except for blown internal fuses. The were "fast", and he said, even if the amperage is larger, such fuses often blow before "slow" fuses. As far as can be seen, the new r... 
Aesthetix Io strange behaviour
It could be as simple as two bad tubes in a row. Not so often, but it happens. Since this thread may be informative for other Io owners, I will keep you updated. 
Aesthetix Io strange behaviour
The mystery deepens. I brought it back to the repair shop some days ago, and got an email from the professional involved, today. He writes that they have the Io up and running once more, but he wants to keep it for further testing. He writes (my t... 
Aesthetix Io strange behaviour
Another remote possibility may be that the active shield power cable (Synergistic Research A/C Master Coupler X2) that I bought recently is not good for the Io, it gives some static effect, or whatever (even if it is plugged into the same course a... 
Aesthetix Io strange behaviour
I am no engineer, but I guess the possibilities are: 1 the new regulator was not quite the same, not correct, and broke down, 2 the tube went bad (seems unlikely), 3 something else / upstream. I wonder if this kind of failure should have made one ... 
Aesthetix Io strange behaviour
(The digital comment may have been a bit unfair to the Stello DAC, which I bought recently. In my analog chain, the pickup alone costs quite a lot more than the DAC. However, even using the same source (digital), I prefer the DAC into the Io, rath... 
Aesthetix Io strange behaviour
Csng1, I assume you mean, one should only use identical parts? Do you have your Io for repair at the factory, or locally?For some reason, mine has failed once more, with exactly the same symptoms. After bringing it back from the repair shop, it wo... 
Aesthetix Io strange behaviour
OK, cleared up. A local electronics repair shop was able to do it. They found "a defect regulator V1 in the power supply and changed the V1 tube". Reason for failure not known, may have been the fault of the tube. Whatever the case, music is back ... 
Cleaning the equipment
Personally I might vouch for a parrot or two - but thank you! The towels idea is good. Purifiers may help also. I think the problem is common for us all. 
Aesthetix Io strange behaviour
Thank you, I got no answer but left a message.The problem is specific, perhaps the cure also?I've changed power supply tubes and fuses - no help.Obviously there is power out, since I hear these noises in the speakers when I turn the volume knobs, ... 
Tube amp for "difficult" speakers,,,
Just for your information, Atmasphere MA1-s cannot drive Dynaudio Consequence speakers (i have mk2). This is no big surprise but I wanted to mention it so you don't mis-invest your money. Using autoformers helps a bit but not enough. Both are grea... 
Dynamic speakers for OTL amps
Thanks a lot, and yes, I hope I am in for a treat! Obviously there are many variables, and doing away with x-overs may not be realistic in practice. The advice concerning a smooth impedance curve and bass excess/voicing is relevant, as are the mod... 
Has anybody heard the ProAc D40R????
I can just throw in some listening experience from a number of years ago, comparing the Proac 3.8 and the Dynaudio Consequence mk 2, both made around 1995-2000, using a Krell 2 x 600 amp. I found that the Proacs were lively and could play very wel... 
VPI motor - upgrade to 300 rpm?
Mark, sorry for not answering. I am ordering a 300 rpm motor and a new pulley from vpi, with the lower groove 10 percent larger than the upper groove, for a silk string. The reason I do this is, mainly, slight speed or pitch variations. For some r... 
VPI motor - upgrade to 300 rpm?
Mike at VPI has mailed that if I am able to extend the plinth hole for the pulley, he can ship the 300 rpm motor and new pulley. The hole for the 600 rpm motor is ca 35 millimeter, the pulley is 22. A half rpm motor means a doubling of pulley diam...