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Post by fredriki on Nov 21, 2013 14:36:37 GMT -5
... well it makes a ground loop hum from the speakers  I know it came from my Oppo but this is my only good source. When I unplug the hdmi cable from the receiver the hum disappear... I have my set-up box plugged in the hdmi input on the back of the Oppo and ethernet cable. Hdmi-1 is the tv and hdmi-2 is the receiver on the Oppo. However, even if I unplug all of this the hum is still there. All my components are plugged in my Monsterpower conditioner, the XPA-2 is in the wall. I tried another powercord, another electrical outlet etc, no change. This is very frustrating, I know this is a good amp and it sounds fantastic with my RF-7. Basses are much more precise and have more impact. The highs are liquid the my ears. But the hiss is very irritating... it's like having a ton of fluorescent lamp around me...  So now I will take a beer, relax and listen to the beautiful hiss-hum-buzz coming from my speakers!  Cheers!  |
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Post by dally on Nov 21, 2013 15:22:45 GMT -5
Try plugging your XPA-2 into the same outlet as your other components. If that doesn't work you could try a cheater plug. Also cable boxes are notorious for ground loops. Try disconnecting that and see if anything changes.
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Post by fredriki on Nov 21, 2013 15:46:22 GMT -5
You would not believe what I found. I swapped my $800 MIT Shutgun analog interconnects for some cheap $5 ones and ALL the hiss / hum / buzz as disappear... Whaaaaattt  I now have a black background from all my sources  I just don't understand this... Life is a mystery sometimes |
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Post by novisnick on Nov 21, 2013 15:53:07 GMT -5
Most of the time, that's what happens. Damn snake oil!
Nick
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Post by jmilton on Nov 21, 2013 16:54:42 GMT -5
You would not believe what I found. I swapped my $800 MIT Shutgun analog interconnects for some cheap $5 ones and ALL the hiss / hum / buzz as disappear... Whaaaaattt I now have a black background from all my sources I just don't understand this... Life is a mystery sometimes " When good cables go BAD" : the Movie |
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Post by frenchyfranky on Nov 21, 2013 18:42:35 GMT -5
You would not believe what I found. I swapped my $800 MIT Shutgun analog interconnects for some cheap $5 ones and ALL the hiss / hum / buzz as disappear... Whaaaaattt I now have a black background from all my sources I just don't understand this... Life is a mystery sometimes MIT cable company will answer that the competitors cable are not good enough to let you hear the hum and hiss...  |
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Post by fredriki on Nov 21, 2013 18:56:45 GMT -5
You would not believe what I found. I swapped my $800 MIT Shutgun analog interconnects for some cheap $5 ones and ALL the hiss / hum / buzz as disappear... Whaaaaattt I now have a black background from all my sources I just don't understand this... Life is a mystery sometimes MIT cable company will answer that the competitors cable are not good enough to let you hear the hum and hiss... There is no hum and hiss with my other components. Only with the XPA-2 in the chain... |
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Post by frenchyfranky on Nov 21, 2013 19:02:15 GMT -5
Hum is the nightmare of this hobby, a lot of poeple report hum when they adding a power amp in the chain, but most of the time the hum came from a source or the AVR. In your case it must be from RCA cable.
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Post by novisnick on Nov 21, 2013 21:23:18 GMT -5
I like to Hum along with lots of songs! Does that count? He,,,,,,,He,,,,,,,,, Peace, Nick |
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Post by frenchyfranky on Nov 21, 2013 21:36:36 GMT -5
I like to Hum along with lots of songs! Does that count? He,,,,,,,He,,,,,,,,, Peace, Nick Just like I said, it's a nightmare... |
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Post by fredriki on Nov 22, 2013 0:37:03 GMT -5
Well, the noise came back a little bit. When there is no music or the music is very soft I ear a buzz. It stays for like 30 sec and it stops for 5 sec then it came back... So it's intermittent... But I still enjoy the amp very much. I think it's the best amp I ever had! I know a thread is much more fun with pics so here it is... Good night! Attachments:
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Post by fredriki on Dec 23, 2013 22:36:16 GMT -5
Well... I'll give you a litte update! I bought a BDP-105 and connected directly to the XPA-2. It replaced the BDP-103d. Best decision ever! What a change in sound quality I cannot believe what I ear now from my RF-7. No more hiss and hum, just nice music... thight and musical. That's it folks, all that to say that i'm very happy with this amp... Good night  |
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Post by Boomzilla on Dec 23, 2013 22:54:31 GMT -5
Congrats, fredriki - I love my BDP-105 too. Enjoy!
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Post by tchaik on Dec 23, 2013 22:56:17 GMT -5
just a thought. sell the mit cables and buy some 'bluejeans" custom made cables. a lot less money and made from a company that understands the recording industry
and what cables need to be.
i have owned mit in the past. i now own bluejeans and i won't look back.
tchaik.......
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Post by mdanderson on Jan 10, 2014 21:33:39 GMT -5
Well... I'll give you a litte update! I bought a BDP-105 and connected directly to the XPA-2. It replaced the BDP-103d. Best decision ever! What a change in sound quality I cannot believe what I ear now from my RF-7. No more hiss and hum, just nice music... thight and musical. That's it folks, all that to say that i'm very happy with this amp... Good night I have an Oppo 105 as well and I agree that it is one of the best decisions I have made in my HT system however I don't have it connected directly to my XPA-5. It is running through a UMC-200 but it sounds very nice. Glad you don't have the hum anymore. |
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I know it came from my Oppo but this is my only good source. When I unplug the hdmi cable from the receiver the hum disappear... I have my set-up box plugged in the hdmi input on the back of the Oppo and ethernet cable. Hdmi-1 is the tv and hdmi-2 is the receiver on the Oppo. However, even if I unplug all of this the hum is still there. All my components are plugged in my Monsterpower conditioner, the XPA-2 is in the wall. I tried another powercord, another electrical outlet etc, no change.
I now have a black background from all my sources 
