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Post by rocky500 on Jul 10, 2015 23:48:12 GMT -5
2 RothWell In-line 10dB attenuators So your saying that these fixed your problem?? In that one problem I had at the time it did. I even ended up buying a passive volume control (Axiom II Passive Preamp) and putting that between the Preamp and Amp as the Rothwell attenuators seem to dull the sound ever so slightly. The Amp in question at the time was a Job 225 Amp with higher gain I think than even the Emotiva amps.  |
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Post by novisnick on Jul 10, 2015 23:50:08 GMT -5
Are you talking about inside the XSP-1???
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Post by novisnick on Jul 10, 2015 23:51:15 GMT -5
As you can tell, I'm clueless here! :0
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Post by rocky500 on Jul 10, 2015 23:53:19 GMT -5
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Post by novisnick on Jul 10, 2015 23:59:51 GMT -5
I listened to your problem,,,,,,dang, it was bad! And these cured it or just dulled the buzz? |
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Post by rocky500 on Jul 11, 2015 0:04:04 GMT -5
I listened to your problem,,,,,,dang, it was bad! And these cured it or just dulled the buzz? Cured it completely but doing some research on the net the Rothwells have been known to take a little shine off the sound. It is very slight. The Axiom is very transparent and I did not seem to loose any sound quality. It was mainly my music listening and I was after the best sound possible at the time. You really have to sit there and critically listen to your music to notice. |
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Post by novisnick on Jul 11, 2015 0:07:49 GMT -5
You've been most helpful, I will dig a little deeper into this.
Thanks.
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Post by rocky500 on Jul 11, 2015 0:24:54 GMT -5
You've been most helpful, I will dig a little deeper into this. Thanks. No worries as buzzing in your stereo is one of the most annoying problems. |
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Post by dudeisms7 on Jul 11, 2015 0:32:07 GMT -5
I know this is going to sound crazy but what you are plugged into (all devices, what outlets, pwr strips), the order in which they are plugged, sometimes even the number of devices (say u have 8 devices, unplug one.. Now down to 7, buzz goes away..eventhough you want and need the 8)....... All this crazy stuff can create ground loop buzz. Sometimes u can play around with things or combinations of how things are plugged..and the ground loop buzz will go away. This happens to people with high power amps, even to people with $60,000 ea monoblocks. You can try also buying something that breaks the ground loop. I had this problem once and started trying plugging things into different power outlets and by some miracle whatever magic combination that I event tried worked...I got lucky and didn't have to buy a something to break the ground loop. Is this nuts? Is this tedious? A pain in the u know what?.... Absolutely.... But it's a quite common phenomenon with high power
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Post by dudeisms7 on Jul 11, 2015 0:33:16 GMT -5
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Post by dudeisms7 on Jul 11, 2015 0:34:27 GMT -5
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Post by me262 on Jul 11, 2015 0:59:53 GMT -5
I had the XSP-1 and it buzzed in HTB with my Marrantz 7701, UMC-200, and my Onkyo-TX1008. I tried everything and I never was able to fix it. The buzz didn't change volume though and was quiet enough that at normal distance it didn't bother me. My final solution was just to buy an XMC-1 and remove the XSP from the signal chain. Obviously not a move that is right for everyone, nor should you have to do it, but that was how i did it.
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Post by Gary Cook on Jul 11, 2015 1:17:39 GMT -5
More info Nick, what frequency is the buzz? Since you describe it as a buzz, not a humm, then it's unlikely to be 60 Hz ground loop. It's also not a hiss which is commonly related to filtering in the amplification. A freebie app on your phone will tell you the approximate frequency if you don't have anything better.
Next is the volume question, does the buzz get louder with increases in volume of the processor? Or is it always the same volume? Does it change with changes in the Pre amp volume? What this test tells us hopefully is where the noise is being generated and/or where it is being amplified.
Last for this round, what components have you got connected to both the processor and the pre amp? Do yo have, for example, your OPPO connected to the processor via HDMI and to the pre amp via RCA?
Like all fault finding this is a process of elimination, and since the XSP-1 has been back to Emotiva and tested OK, then there's a pretty good chance it's your specific installation. We just need to find out which part of that installation it is.
Cheers
Gary
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Post by novisnick on Jul 11, 2015 1:22:13 GMT -5
More info Nick, what frequency is the buzz? Since you describe it as a buzz, not a humm, then it's unlikely to be 60 Hz ground loop. It's also not a hiss which is commonly related to filtering in the amplification. A freebie app on your phone will tell you the approximate frequency if you don't have anything better.ill need to do this but first answer the other questions. Next is the volume question, does the buzz get louder with increases in volume of the processor? Or is it always the same volume? Does it change with changes in the Pre amp volume? What this test tells us hopefully is where the noise is being generated and/or where it is being amplified. The buzz disappears when I turn up the volume, maybe drowns it out? Last for this round, what components have you got connected to both the processor and the pre amp? Do yo have, for example, your OPPO connected to the processor via HDMI and to the pre amp via RCA? Only thing connecting the Yamaha and the XSP-1 are the amp feeds . Like all fault finding this is a process of elimination, and since the XSP-1 has been back to Emotiva and tested OK, then there's a pretty good chance it's your specific installation. We just need to find out which part of that installation it is. Cheers Gary Thanks Gary, I'll go down the list. Hope this turns out the way I hope. |
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Post by novisnick on Jul 11, 2015 1:23:49 GMT -5
More info Nick, what frequency is the buzz? Since you describe it as a buzz, not a humm, then it's unlikely to be 60 Hz ground loop. It's also not a hiss which is commonly related to filtering in the amplification. A freebie app on your phone will tell you the approximate frequency if you don't have anything better.ill need to do this but first answer the other questions. Next is the volume question, does the buzz get louder with increases in volume of the processor? Or is it always the same volume? Does it change with changes in the Pre amp volume? What this test tells us hopefully is where the noise is being generated and/or where it is being amplified. <(The buzz disappears when I turn up the volume, maybe drowns it out?)> Last for this round, what components have you got connected to both the processor and the pre amp? Do yo have, for example, your OPPO connected to the processor via HDMI and to the pre amp via RCA? <Only thing connecting the Yamaha and the XSP-1 are the amp feeds .> Like all fault finding this is a process of elimination, and since the XSP-1 has been back to Emotiva and tested OK, then there's a pretty good chance it's your specific installation. We just need to find out which part of that installation it is. Cheers Gary Thanks Gary, I'll go down the list. Hope this turns out the way I hope. |
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Post by novisnick on Jul 11, 2015 1:27:04 GMT -5
Can't find the app your talking about Gary
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Post by novisnick on Jul 11, 2015 1:38:04 GMT -5
I'll start again tomorrow night, night all!
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Post by dudeisms7 on Jul 11, 2015 1:39:21 GMT -5
Search for "frequency analyzer". And ground loops don't only come in the 60hz flavor... But the noise can also be caused by transformers
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Post by Gary Cook on Jul 11, 2015 2:56:56 GMT -5
On the iPhone I use JL Audio Analyzer it's a free app, not super brilliant but OK for fault finding.
Cheers
Gary
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Post by kauai82 on Jul 11, 2015 11:49:12 GMT -5
I too, have a xsp -1 although it is a gen 1 with a HT bypass buzz. When not in HT bypass mode it is dead silent. After reading this thread I decided to find out what was causing it. I had just moved my Fusion 8100 into the system in the man cave after having it in the family room. Since the electric cord for the Marantz ( which I was switching out upstairs) and the Emotiva 8100 was the same configuration and almost impossible for me to get out with out tearing apart the family room entertainment center I decided to use the Marantz power cord with the 8100.
After eliminating the rest of the components in the system by unplugging them at the unit I still had the buzz. I then unplugged the fusion 8100 and bingo it went away ! If your buzz is always there when you put the xsp in HT mode even with every thing else in the system turned off and the volume control on the xsp-1 does not effect the volume of the buzz, try unplugging the Yamaha and see what happens. All power cords are not created equal ! Hope this helps ! Matt
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