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HE-500, LCD2, D5000, DT770, SR80, on a speaker amp (Emotiva mini-X A-100) Project - Page 150

post #2236 of 3790
How high is it turned up? Also do you have any other amps plugged in the same room?
post #2237 of 3790
The amp volume is at around 9o clock and I have a o2 in the room but its not on or plugged in
post #2238 of 3790
Perhaps it is my cable? I'm using a cable that I received with my he500 while I wait for my adapter to come in. I don't know what the cable is made of, etc. it was just a banana plug cable that I received along with the he 5000
post #2239 of 3790
Can you hear the noise when nothing is playing? Also does it increase and you increase the pot? Is it a low frequency hum like 50 or 60 Hz or a higher one?
post #2240 of 3790

Yeah, I can definitely hear it while no music is playing though it's barely audible at the volumes that I listen to music at and it does increase with pot. I don't know what frequency it is but it sounds like a hiss.

post #2241 of 3790
I would try first to disconnect everything else in the room especially big electronics like TV or computer. That would eliminate ground loop hum. I have some of this using Crack with Emotiva unfortunately. If there's still an issue it could your cable since I'm using the adapter and no problem when running Emotiva alone. It could even be the power and you might need a conditioner but that less likely. Your specific unit may even be defective.
post #2242 of 3790

Well, I definitely cannot turn off my computer because I'm using an Asus essence STX. Is it supposed to be dead silent or something? I mean, if it's not dead silent, that doesn't mean it's defective, does it? Anyways, I'll see if the issue is fixed when I receive my adapter on Thursday.

 

Oh yeah, about my previous question, is the He-500 supposed to be sibilant with the emotiva or something?

post #2243 of 3790
Quote:
Originally Posted by koiloco View Post
 


I read about it but haven't checked it out yet.  Promising?

 

I haven't heard it unfortunately. I haven't been disappointed by any Bottlehead stuff though.

 

 

Quote:
Originally Posted by Ethereal Sound View Post

Perhaps it is my cable? I'm using a cable that I received with my he500 while I wait for my adapter to come in. I don't know what the cable is made of, etc. it was just a banana plug cable that I received along with the he 5000
 
Yeah, I can definitely hear it while no music is playing though it's barely audible at the volumes that I listen to music at and it does increase with pot. I don't know what frequency it is but it sounds like a hiss.

 

It's not likely the cable unless it's long enough to act like an antenna.

 

If the noise is increasing with the pot, then it's your source that's producing it..

 

 

 

 

 

post #2244 of 3790
Quote:
Originally Posted by Armaegis View Post
 

 

I haven't heard it unfortunately. I haven't been disappointed by any Bottlehead stuff though.

 

 

 

It's not likely the cable unless it's long enough to act like an antenna.

 

If the noise is increasing with the pot, then it's your source that's producing it..

 

 

 

 

 

 

Oh, interesting. Might the fact that I'm using a soundcard in my PC have anything to do with it?

post #2245 of 3790
Quote:
Originally Posted by Ethereal Sound View Post
 

 

Oh, interesting. Might the fact that I'm using a soundcard in my PC have anything to do with it?

How much noise do you get when you disconnect the amp inputs?

post #2246 of 3790
Quote:
Originally Posted by john57 View Post
 

How much noise do you get when you disconnect the amp inputs?

I actually have not tried that at all yet. brb I guess.

 

Edit: I disconnected the amp inputs and it's dead silent. I guess it is definitely coming from my soundcard. Is there any way for me to reduce the hiss? Also, considering the fact that it's barely audible, do you think it makes any discernable difference in the SQ?


Edited by Ethereal Sound - 11/5/13 at 2:19pm
post #2247 of 3790
That makes sense. The other components in your computer adds some interference. It's up to if you want to get a dedicated DAC.
post #2248 of 3790
Quote:
Originally Posted by Ethereal Sound View Post
 

I actually have not tried that at all yet. brb I guess.

 

Edit: I disconnected the amp inputs and it's dead silent. I guess it is definitely coming from my sound card. Is there any way for me to reduce the hiss? Also, considering the fact that it's barely audible, do you think it makes any discernible difference in the SQ?

Maybe not but I am concerned that you stated that the He-500 is sibilant which also can a weakness or distortion coming out of your sound card. It can also be that the PC itself is too noisy for the sound card to handle.  Some music I had on hand is sibilant in nature. The only way is to be sure is to try a different hardware source and see if the sibilant level changes. It can depend on how far you wanted to go with this. I do not have enough details on your computer setup and other factors like how clean your power and grounding could make a difference.

post #2249 of 3790
Quote:
Originally Posted by john57 View Post

Maybe not but I am concerned that you stated that the He-500 is sibilant which also can a weakness or distortion coming out of your sound card. It can also be that the PC itself is too noisy for the sound card to handle.  Some music I had on hand is sibilant in nature. The only way is to be sure is to try a different hardware source and see if the sibilant level changes. It can depend on how far you wanted to go with this. I do not have enough details on your computer setup and other factors like how clean your power and grounding could make a difference.

Just wondering, what do you mean by cleanness of grounding and power?
post #2250 of 3790
Quote:
Originally Posted by Ethereal Sound View Post
 

 

Oh, interesting. Might the fact that I'm using a soundcard in my PC have anything to do with it?


Feeding Emotiva or other amps directly from sound card output is never optimal when it comes to noise problem and good isolation.  That's why we use external DAC fed by optical.  Even USB DACs could be prone to carrying noise+other electrical interference from your computer to your amp.

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