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post #20701 of 24765
Please accept my apologies MH,

Being new around here makes me edgy on impressions. On an OZ forum, we caught out a dealer!
post #20702 of 24765
Quote:
Originally Posted by DefQon View Post

@MH: Do you ever get bored with having that amount of gear? Or a hard time picking one to suit your listening sessions?

Nope. biggrin.gif Kinda depends on my mood on picking gear...but for the most part, its the SR-009s.

Quote:
Originally Posted by ecohifi View Post

Please accept my apologies MH,

Being new around here makes me edgy on impressions. On an OZ forum, we caught out a dealer!

So instead you shoot an attack on a fellow member without even looking at their signature or user profile? Just because you had an issue on some local forum, doesn't give you cart blanche to call some out without any digging whatsoever. Not kewl dude! 

 

That said, I do accept your apologies. beerchug.gif

post #20703 of 24765
Quote:
Originally Posted by shipsupt View Post

Ok, the inside of the amp was clean, no signs of issues. I switched the voltage to 230v. Fired up and had the cut out in no time.

I swapped the source and it's been happily playing for over an hour now. So what does this mean about my source? It's a brand new NAD M51. It plays nicely with every other amp I connect it to. Would trying it connected unbalanced have any effect? Am I just not able to use it with the 717 or is there something on the DAC output that can be checked, or the sensitivity of the DC input protection on the 717?

Thanks. Good to make some progress.

 


The M51 is outputting DC which the DC coupled 717 amplifies faithfully.  No source should output DC.... 

post #20704 of 24765

Can I measure it with a multi-meter?  Is this something I should consider returning the DAC to NAD to have corrected?  I understand your point that there should be no DC on the line, but is there any tolerance for even some stray DC?

 

Sorry for all the questions, this one is completely new to me.

 

FWIW

I've read a lot of threads on the M51 and haven't heard of anyone else with a similar issue.  Doesn't mean it hasn't happened.

post #20705 of 24765

I would return it personally but if you have a multimeter you can measure it.  For RCA you place the red probe into the hole and the black probe on the sleeve.  For XLR you place the black probe on pin 1 and the red probe on both nr. 2 and nr. 3 for each output.  The dac has to be on for this and playing music in case there is a relay shutting off the output. 

 

Adjust the meter to the lowest DC voltage setting if it isn't auto ranging. 

post #20706 of 24765

Thanks.  Out of curiosity I'll check it, and then I'll start talking to NAD about return and replacement.

post #20707 of 24765

@anetode, arnaud, MacedonianHero, MorbidToaster, dukeskd, rgs9200m: Thanks for all your impressions. You can always count on Head-Fi to reinforce your buying decisions. normal_smile%20.gif

post #20708 of 24765
Quote:
Originally Posted by glassmaple View Post

@anetode, arnaud, MacedonianHero, MorbidToaster, dukeskd, rgs9200m: Thanks for all your impressions. You can always count on Head-Fi to reinforce your buying decisions. normal_smile%20.gif

And burning your wallet at the same time.

post #20709 of 24765

Addiction.

 

There I fixed it. SH Forums have been reinforcing my addiction to vinyl lately. 

 

Quote:
Originally Posted by glassmaple View Post

@anetode, arnaud, MacedonianHero, MorbidToaster, dukeskd, rgs9200m: Thanks for all your impressions. You can always count on Head-Fi to reinforce your buying decisions. normal_smile%20.gif

post #20710 of 24765
Quote:
Originally Posted by shipsupt View Post

Can I measure it with a multi-meter?  Is this something I should consider returning the DAC to NAD to have corrected?  I understand your point that there should be no DC on the line, but is there any tolerance for even some stray DC?

Sorry for all the questions, this one is completely new to me.

FWIW
I've read a lot of threads on the M51 and haven't heard of anyone else with a similar issue.  Doesn't mean it hasn't happened.

The M51 is a nice sounding dac, it has the best volume control that I have ever tested and that includes most over the counter Alps, Allen Bradley, a range of carbon and plastic film throughout my journey in this hobby, as far as I'm concern none of these go near it. However the M51 is poorly put together and the soldering on the pcb is less than desireable even for a cheap produced toy. When I got my M51, the minute I placed it in my rig one channel was intermittently tripping the speaker protection and a static hum could be heard coming on and disappearing during the 1st track.
I decided to take it back and the dealer had it on test on there showroom floor for 2 wks and decided to send it back with NFF. I contacted the distributor threatening to sue if it blew my speakers and that forced the dealer to send it an authorised tech. When I got it back it look like they hit every analog component with a soldering iron. Six mths in, one of the relays in the analog section was also slow to come on, that's now corrected itself after a session of switching it off/on. This isn't the 1st I have heard issues with the M51, there are many others on other forums with similar issues. The solder process on the pcb is a real let down for a top flight dac that's supposed to have bullet proof built quality.

No stray DC should ever be present in source components and that includes preamps, if I were in your shoes I send it back!
Edited by ecohifi - 1/18/13 at 6:25pm
post #20711 of 24765

My friend just got an used T1S, the amp can be turn on & sing,

 

but the transformer seems...strange,it's fatty

 

Where can i buy replacement transformer?..

 

thanks

 

post #20712 of 24765

Stax SR-009 & Woo Audio WES (Free Stand and Extension Cable) - $9500 (Downtown)

http://losangeles.craigslist.org/lac/ele/3544219780.html.

 

In case anyone in L.A. is interested.

post #20713 of 24765
Quote:
Originally Posted by rubenpp View Post

Stax SR-009 & Woo Audio WES (Free Stand and Extension Cable) - $9500 (Downtown)



http://losangeles.craigslist.org/lac/ele/3544219780.html.

In case anyone in L.A. is interested.

If anyone is looking for this combo I'd check out this guy first

http://www.head-fi.org/t/631231/fs-price-down-woo-audio-wes-update-tube-009-sell-in-australia

(around 7300USD, and he gives you some nice shuguang tubes)

I've dealt with him before and he is an excellent seller.
post #20714 of 24765
Quote:
Originally Posted by En_R View Post


If anyone is looking for this combo I'd check out this guy first

http://www.head-fi.org/t/631231/fs-price-down-woo-audio-wes-update-tube-009-sell-in-australia

(around 7300USD, and he gives you some nice shuguang tubes)

I've dealt with him before and he is an excellent seller.

 

^

Definitely worth looking into :)

post #20715 of 24765

I'd call that overpriced if you ask me. 

 

Quote:
Originally Posted by rubenpp View Post

Stax SR-009 & Woo Audio WES (Free Stand and Extension Cable) - $9500 (Downtown)

http://losangeles.craigslist.org/lac/ele/3544219780.html.

 

In case anyone in L.A. is interested.

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