[ajy55906]

I was using the Hosfelt power upgrade on my Xcans, v2. Really improved the sound. After about 5 months, I burnt several resistors and the cans are dead.

Can anyone recommend a repair shop? In the alternative, I could possibly have it fixed locally if I could get schematics with resistor values.

Any thoughts would be appreciated. My recommendation: stick with the Musical Fidelity power source.

 

[Magic77]

Quote:

Originally posted by ajy55906 I was using the Hosfelt power upgrade on my Xcans, v2. Really improved the sound. After about 5 months, I burnt several resistors and the cans are dead. Can anyone recommend a repair shop? In the alternative, I could possibly have it fixed locally if I could get schematics with resistor values. Any thoughts would be appreciated. My recommendation: stick with the Musical Fidelity power source.

I also have the X-Can v2, and Yes, I agree with you about sticking to the original power supply that MF supplied with the amp or at least one that is equivalent to it's specs.

Many people do hear an improvement with higher-current power supplies with this amp, but maybe it's not so good over a period of time, like in your case. I tried higher current power supplies and the amp was getting a bit too hot, so I went back to the original wall wart just to be safe.

As far as repairing it; try to contact Musical Fidelity possibly through their website: www.musicalfidelity.com

 

[PinkFloyd]

Quote:

Originally posted by Magic77 I also have the X-Can v2, and Yes, I agree with you about sticking to the original power supply that MF supplied with the amp or at least one that is equivalent to it's specs. Many people do hear an improvement with higher-current power supplies with this amp, but maybe it's not so good over a period of time, like in your case. I tried higher current power supplies and the amp was getting a bit too hot, so I went back to the original wall wart just to be safe. As far as repairing it; try to contact Musical Fidelity possibly through their website: www.musicalfidelity.com

Then whatever you do, do not use a Musical Fidelity X-PSU power supply if you don't like high current as its transformer ia a 12V AC / 80VA toroidal.

The amp will only draw the current it needs.. it won't be fed with any current it hasn't asked for.

Was the Hosfelt adaptor the 12 VAC @ 4.5 AMP one at $7.95? I wouldn't like to imagine what's inside its case at that price but you can rest assured it won't be the best of quality.

You say the resistors are burnt out. Is the adaptor still working and, if so, have you measured the exact voltage it's producing?

There's no point in saying to stick with the MF wallwart just because you've used a cheap replacement which wasn't up to the job. As previously mentioned the X-PSU is an 80 VA toroidal so high current doesn't enter the equation.

If you're going to use an alternative power supply then try to buy something that's of good quality. I have built a psu for the X-cans which you can see here http://freespace.virgin.net/rock.grotto look for the "power supply unit" link.

Hope you manage to get your amp fixed ok

All the best
Pinkie

 

[Magic77]

PinkFloyd,

I guess you are right about the cheap wall warts. They won't hold up like a Toroid would(Sorry I didn't think about that). But, there are some better quality wall warts such as the Tamura which I'm using now. The wall wart that comes from Musical Fidelity probably isn't that bad either, that's why I advised ajy55906 to stick with the original wall wart.

Not everyone has the skill to build a great PSU like yours, so in that case I think you would be safer to use the supplied wall wart.

Maybe you can put your PSU into production and sell them to X-Can owners? I would definitely buy one if the price was right!