New Posts  All Forums:Forum Nav:

Balanced Desktop - Power Supply - Page 2

post #16 of 54
8/9/08 at 5:45am
I've just bought the DPS for my desktop balanced amp. When i switch it on i can hear a slight hum coming from it, is that normal?

My last amp was a gilmore lite with Dps and it was totally silent, which is making me think there might be a problem with it.
Reply
post #17 of 54
8/9/08 at 6:51am
Quote:
Originally Posted by lisnalee View Post
I've just bought the DPS for my desktop balanced amp. When i switch it on i can hear a slight hum coming from it, is that normal?

My last amp was a gilmore lite with Dps and it was totally silent, which is making me think there might be a problem with it.
Did you try setting the ground lift to "float"?
Reply
post #18 of 54
8/9/08 at 8:56am
my DPS was ordered in the same order as lisnalees, and he sent it onto me, if anything i would have thought i would have had a 'hum', as my old electrics here produce an AC hum through my logitech subwoofer.

but in testing, putting my ear really near the dps, with all other electrical noise closed down from other sources, i can confirm it is deadly silent, i think lisnalee may be talking about a hum coming from the DPS externally, not whilst using headphones?!? - otherise, as you said, the float option would be of help as lisnalee is well aware of.

lets hope its able to be sorted and interesting to hear what HR have to say.

lisnalee, can you confirm if its external hum?, ie. you can hear a hum without headphones on, emanating from the DPS - or is it the introduction of the DPS into the balanced amp that is making hum through the headphones?
Reply
post #19 of 54
8/9/08 at 9:31am
Quote:
Originally Posted by Quaddy View Post
my DPS was ordered in the same order as lisnalees, and he sent it onto me, if anything i would have thought i would have had a 'hum', as my old electrics here produce an AC hum through my logitech subwoofer.

but in testing, putting my ear really near the dps, with all other electrical noise closed down from other sources, i can confirm it is deadly silent, i think lisnalee may be talking about a hum coming from the DPS externally, not whilst using headphones?!? - otherise, as you said, the float option would be of help as lisnalee is well aware of.

lets hope its able to be sorted and interesting to hear what HR have to say.

lisnalee, can you confirm if its external hum?, ie. you can hear a hum without headphones on, emanating from the DPS - or is it the introduction of the DPS into the balanced amp that is making hum through the headphones?

Thanks Quaddy for your input .

I probably should have explained the problem in better detail, i was just up and hadn't had the morning wake up coffee, but yes the hum is coming from the unit itself.

I cant hear it while listening with headphones which i guess is a good thing. I did try the float option which made no difference but from what i gather from the manual it would only help it if i was hearing though the headphones.

But i'd just feel better if someone else's sounded the same.
Reply
post #20 of 54
8/9/08 at 3:31pm
Quote:
Originally Posted by lisnalee View Post
Thanks Quaddy for your input .

I probably should have explained the problem in better detail, i was just up and hadn't had the morning wake up coffee, but yes the hum is coming from the unit itself.

I cant hear it while listening with headphones which i guess is a good thing. I did try the float option which made no difference but from what i gather from the manual it would only help it if i was hearing though the headphones.

But i'd just feel better if someone else's sounded the same.
Got it now, I misunderstood the first time, sorry. I do not recall hearing any noise at all coming from my DPS.
Reply
post #21 of 54
8/9/08 at 3:57pm
Quote:
Originally Posted by The Monkey View Post
Got it now, I misunderstood the first time, sorry. I do not recall hearing any noise at all coming from my DPS.
I think i'll email HR on Monday to see what they reckon, just to be on the safe side.

The humming is'nt that loud, but if no one else is doing it then perhaps there's a fault with mine.
Reply
post #22 of 54
8/9/08 at 4:06pm
Quote:
Originally Posted by lisnalee View Post
I think i'll email HR on Monday to see what they reckon, just to be on the safe side.

The humming is'nt that loud, but if no one else is doing it then perhaps there's a fault with mine.
definitely, i would be doing the same! i just feel a bit guilty that mine is seemingly ok, and you unbeknownst to you, were keeping the 'hummer' and sending me the clear one.

at least its not your amp that maybe would have to go back!

if your dps needs to go back and you have sold your astrodyne by then, you can borrow my astrodyne to tide you over, just let me know.

man i need a different surface space now with all this big old desktop rig
Reply
post #23 of 54
8/9/08 at 5:24pm
Quote:
Originally Posted by Quaddy View Post
definitely, i would be doing the same! i just feel a bit guilty that mine is seemingly ok, and you unbeknownst to you, were keeping the 'hummer' and sending me the clear one.

at least its not your amp that maybe would have to go back!

if your dps needs to go back and you have sold your astrodyne by then, you can borrow my astrodyne to tide you over, just let me know.

man i need a different surface space now with all this big old desktop rig
Thanks Buddy

It's at times like this, with the generosity of others that make me really appreciate being a part of Head-Fi.
Reply
post #24 of 54
8/10/08 at 3:50am
Just to add a little bit: this is why you buy from HR. They take pride in their equipment and will figure out the problem.
Reply
post #25 of 54
8/10/08 at 9:15am
It might just be straight off transformer hum. Not a groundloop or anything quasi complicated.
Reply
post #26 of 54
8/12/08 at 5:37pm
Quote:
Originally Posted by lisnalee View Post
I think i'll email HR on Monday to see what they reckon, just to be on the safe side.The humming is'nt that loud, but if no one else is doing it then perhaps there's a fault with mine.
Howdy Lisnalee,

Hopefully, Service Manager MikeO. (BigWurm) in HeadRoom repair has given you the low-down on our next move... Rest assured if anything's wrong, we'll promptly get that DPS back to perfect silent operation asap!

Cheers,
Jorge
HR Sales/Product Manager
HeadRoom was founded in 1992 & manufactures headphone amps, DACs, and accessories; and sells headphones & related personal audio gear. We offer exceptional products, customer service, & information.
Reply
post #27 of 54
8/13/08 at 11:12am
Quote:
Originally Posted by JorgeC View Post
Howdy Lisnalee,

Hopefully, Service Manager MikeO. (BigWurm) in HeadRoom repair has given you the low-down on our next move... Rest assured if anything's wrong, we'll promptly get that DPS back to perfect silent operation asap!

Cheers,
Jorge
HR Sales/Product Manager
Hi Jorge.

Yeah, ive been speaking to Mike and he has offered to take a look at it if I send it over.

Thanks for the great customer service.

Damian
Reply
post #28 of 54
8/16/08 at 12:12am
Hey I had a question about using the Desktop Power Supply for the Micro Amp and DAC. I read in a review that Headroom dose not recommend placing the micros on top of the Power Supply. Is this true and if so why?
Reply
post #29 of 54
8/16/08 at 1:05am
Quote:
Originally Posted by kboe View Post
Hey I had a question about using the Desktop Power Supply for the Micro Amp and DAC. I read in a review that Headroom dose not recommend placing the micros on top of the Power Supply. Is this true and if so why?
Hello Kboe,

Hmmm, not sure why that would be -- other than maybe the Micros are smaller-sized units & may perhaps slide off the larger rounded DPS chassis if not secured (?) ... Certainly, there's no heat build-up, vibration, or other issues since the DPS is designed to have our 'fully-loaded' Desktop Amp or Balanced Desktop stacked above it!

Cheers,
Jorge
HR Sales/Product Manager
HeadRoom was founded in 1992 & manufactures headphone amps, DACs, and accessories; and sells headphones & related personal audio gear. We offer exceptional products, customer service, & information.
Reply
post #30 of 54
9/4/08 at 9:31am
I also have the DPS with the HRB amp and dac with Steffan Audio cables and a HD650. I feed it from a macbook pro via the optical out... sonic bliss!
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: HeadRoom Premier Sponsor Forum