|  | 
05-31-2011, 10:04 PM
| | Registered User | | Join Date: Nov 2009 Location: Madison,Wisconsin | | | Name that bad sound.
Sign in to disble this ad
Peavey Tour 450 head into a Peavey 410TVX. As I turn up the tone knob on both my Squier Jazz and Ibanez, I get a proportional increase in a very annoying kind of high pitched electrical type noise. I have no Idea what this is. It is also effected by the high knobs, bright button and the EQ section. It's certainly not hiss from the tweeter. So is the issue with my amp or my cabinet? I can probably get a video of it if I need to.
__________________
Wisconsin Bassists Club #65, Ibanez Club #795
Fretless Club #619, Acoustic Bass Fetish Club #177
|
05-31-2011, 10:49 PM
| | Registered User | | Join Date: Apr 2007 Location: Finland (Northern Europe) | | | Hi.
It's most likely RFI (Radio Frequency Interference) picked up by Your pickups.
The source is often a RFI source near by, a transformer (even in Your amp), a choke, electronic ballast, electrical motor, etc.
The test is easy, face the instrument to a RFI source, if the interference increases, that's it.
The only way I know that gets rid of it mostly is to use well engineered active pickups, preferably low impedance. Just using active electronics can help if they have noise reduction circuitry, or the noise is feedback from the amp.
Regards
Sam |
05-31-2011, 10:52 PM
| | Registered User | | Join Date: Nov 2009 Location: Madison,Wisconsin | | | I shall give this a try. Would a TV do it?
__________________
Wisconsin Bassists Club #65, Ibanez Club #795
Fretless Club #619, Acoustic Bass Fetish Club #177
|
05-31-2011, 11:18 PM
| | Registered User | | Join Date: Nov 2009 Location: Madison,Wisconsin | | Quote:
Originally Posted by T-Bird  Hi.
It's most likely RFI (Radio Frequency Interference) picked up by Your pickups.
The source is often a RFI source near by, a transformer (even in Your amp), a choke, electronic ballast, electrical motor, etc.
The test is easy, face the instrument to a RFI source, if the interference increases, that's it.
The only way I know that gets rid of it mostly is to use well engineered active pickups, preferably low impedance. Just using active electronics can help if they have noise reduction circuitry, or the noise is feedback from the amp.
Regards
Sam | You get 10 points in my book. It was the TV. Thanks for the help!
__________________
Wisconsin Bassists Club #65, Ibanez Club #795
Fretless Club #619, Acoustic Bass Fetish Club #177
|
05-31-2011, 11:29 PM
|  | Total Hyper-Elite Member | | Join Date: May 2000 Location: Groom Lake, NV | | | I hereby name it "Theotis."
__________________
What is this thing called butthurt? |
06-01-2011, 01:02 AM
| | Registered User | | Join Date: Apr 2007 Location: Finland (Northern Europe) | | Hi. Quote:
Originally Posted by Systolic You get 10 points in my book. It was the TV. Thanks for the help! | You're welcome, happy to hear that pinpointing the cause was an easy one.
Believe me, it often isn't, especially on stage.
Regards
Sam |
06-01-2011, 01:58 AM
|  | Registered User | | Join Date: Dec 2009 Location: Finland | | | Get a quality cable, and check the shielding and grounding of the electronics. If a TV can cause the whine, you cannot control what noise will be picked up by your system in a live situation.
__________________
Fender Telecaster Basses & Precision Bass + G & L L-1000 & L-2000 -> Aguilar DB751 -> DB212 cabinets (garage setup) or TH500 -> Laney 2x10 enclosure + Laney NXP 1x15" cabinet (rec room setup)
| | Thread Tools | Search this Thread | | | | 
Posting Rules
| You may not post new threads You may not post replies You may not post attachments You may not edit your posts
HTML code is Off | | | |
