Crown XTI-2000 hum

[Tony3d]

Just hooked up my Crown Xti-2000 to a Crown IC-150 pre-amp, and I have a lot of hum and some buzz. The IC-150 pre-amp outputs are going into a Bose 901 eq then into the Xti-2000 with an RCA to XLR cable. The hum is ridiculous. how do I solve this? I had and Onkyo M504 hooked up to the system just before I hooked up the Crown and there was no hum at all. Can I run the amp with nothing in the inputs just to see if it's the unbalanced leads going into a balanced inputs causing the problem?

 

[mtrycrafts]

Just hooked up my Crown Xti-2000 to a Crown IC-150 pre-amp, and I have a lot of hum and some buzz. The IC-150 pre-amp outputs are going into a Bose 901 eq then into the Xti-2000 with an RCA to XLR cable. The hum is ridiculous. how do I solve this? I had and Onkyo M504 hooked up to the system just before I hooked up the Crown and there was no hum at all. Can I run the amp with nothing in the inputs just to see if it's the unbalanced leads going into a balanced inputs causing the problem?

Yes, you can test this out. Just be careful.
If this is the cause, then you may have to see if you can eliminate that ground loop somehow. Plug all the components in the same outlet. Perhaps run a test ground wire between the Crown pre and power amp attached to the chassis, even by touching a wire to both without actually making a hard connection by screwing the wire to the chassis and see if any change happens.

 

[Tony3d]

What about the hum boxes like the Rolls he18 or the Art Clean box? Can I just buy that? Oh and buy the way thanks for all this help. I posted on other boards and this has been the must helpful. Unfortunately my cable building*expertise is non existent. I have Attached a info on the Rolls unit.

 

[mtrycrafts]

What about the hum boxes like the Rolls he18 or the Art Clean box? Can I just buy that? Oh and buy the way thanks for all this help. I posted on other boards and this has been the must helpful. Unfortunately my cable building*expertise is non existent. I have Attached a info on the Rolls unit.

We try to help

I am not familiar with those add on boxes. I suppose if there is a refund policy, no restocking fee, it would be worth a try.

 

[Tony3d]

I found the ground loop problem! It was the cable box which goes into my 62" tv then the tv goes to my Crown IC-150. Pull those off the Crown and the buzz and hum are gone. I bought the Rolls he18 hum reducer and hooked it up between the tv out and Crown IC-150 and that took care of the hum in my system and doesn't effect the rest of the system. Sounds great plus I can't get the amp hot enough to run the fans. I'm very happy so far. I have no hum or buzz the amp is very quite.*My question is why don't more people buy these pro-amps for home stereo's? This is a very clean powerful amp for $699.00. You would pay at least $1800.00 for half the power in a consumer amp. I'll never look back. I will admit the sound is a bit more analytical the best way I can describe it. I'll never run out of headroom. I have to laugh when I hear people talk about how harsh these pro amps are, I sure don't find them harsh at all.

 

[wire]

I found the ground loop problem! It was the cable box which goes into my 62" tv then the tv goes to my Crown IC-150. Pull those off the Crown and the buzz and hum are gone. I bought the Rolls he18 hum reducer and hooked it up between the tv out and Crown IC-150 and that took care of the hum in my system and doesn't effect the rest of the system. Sounds great plus I can't get the amp hot enough to run the fans. I'm very happy so far. I have no hum or buzz the amp is very quite.*My question is why don't more people buy these pro-amps for home stereo's? This is a very clean powerful amp for $699.00. You would pay at least $1800.00 for half the power in a consumer amp. I'll never look back. I will admit the sound is a bit more analytical the best way I can describe it. I'll never run out of headroom. I have to laugh when I hear people talk about how harsh these pro amps are, I sure don't find them harsh at all.

Hi tony
ill never cut down any Power Amp , it rules most all recievers ( not all recievers , like Sunfire or anything in that class . )
My Bryston4b is a Pro amp , i love it . It kicks Butt

 

[mtrycrafts]

I found the ground loop problem! It was the cable box which goes into my 62" tv then the tv goes to my Crown IC-150. Pull those off the Crown and the buzz and hum are gone. I bought the Rolls he18 hum reducer and hooked it up between the tv out and Crown IC-150 and that took care of the hum in my system and doesn't effect the rest of the system. Sounds great plus I can't get the amp hot enough to run the fans. I'm very happy so far. I have no hum or buzz the amp is very quite.*My question is why don't more people buy these pro-amps for home stereo's? This is a very clean powerful amp for $699.00. You would pay at least $1800.00 for half the power in a consumer amp. I'll never look back. I will admit the sound is a bit more analytical the best way I can describe it. I'll never run out of headroom. I have to laugh when I hear people talk about how harsh these pro amps are, I sure don't find them harsh at all.

What did that device set you back.
Didn't realize you had a TV in the chain. Most of the hum issues come from that in the chain.
There are cable TV isolators for about $10 that would have worked equally, I bet.