| Author |
Topic: Emmons single coil hum |
Bud Angelotti
From:
Larryville, NJ, USA
|
Posted 29 Oct 2001 8:33 am |
|
Hi Y'all - After installing the Lemay mod kit into my Nasville 400, i am getting a lot of low-end hum out of my '79 emmons s-10 original pickup. Now don't get me wrong, it is not the mod kit or amp cause when i fire up my '39 ric lap steel, it sounds great. Very quiet, NO low end hum. Same settings, cable etc. No gadgets. Not even volume pedal. So, the emmons PU seems to be the problem. Any advice out there or is it pickup time? Thanks
------------------
|
|
|
 |
Jim Smith
From:
Midlothian, TX, USA
|
Posted 29 Oct 2001 8:47 am
|
|
Set your amp at a different angle relative to the pickup, it could be that the transformer in your amp is lined up with the coils in your pickup which will cause the symptoms you describe.
------------------
Jim Smith jimsmith94@home.com
-=Dekley D-12 10&12=-
-=Fessenden Ext. E9/U-13 8&8=-
|
|
|
|
Blake Hawkins
From:
Florida
|
Posted 29 Oct 2001 9:07 am
|
|
Bud, The hum has probably always been there,
you are hearing it now because the Mod extends the bass response of the NV400.
Jim advice is good....change the angle or put more distance between the guitar and the Amplifier.
Blake
[This message was edited by Blake Hawkins on 29 October 2001 at 09:08 AM.] [This message was edited by Blake Hawkins on 29 October 2001 at 09:10 AM.] |
|
|
|
Bud Angelotti
From:
Larryville, NJ, USA
|
Posted 29 Oct 2001 9:44 am
|
|
| Thanks fellas - but moving the guitar around does'nt change anything. The low hum is loud and strong and unwavering with movment of the guitars proximity to the amp. How's about changing pick-up height. |
|
|
|
Michael Johnstone
From:
Sylmar,Ca. USA
|
Posted 29 Oct 2001 9:56 am
|
|
| Proximity to a computer monitor or other devices which radiate magnetic fields and RF are an often overlooked source of noise - so make sure it's not that. |
|
|
|
Bud Angelotti
From:
Larryville, NJ, USA
|
Posted 29 Oct 2001 10:44 am
|
|
| Mike - No thats not it either. Nothing in the room, no 60cycle hum. Just a little battery powered pumpkin that says Happy Halloween every time ther's a loud noise. |
|
|
|
Jack Stoner
From:
Kansas City, MO
|
Posted 29 Oct 2001 11:39 am
|
|
Try a different guitar cord. Also check the output jack on the guitar and the underneath wiring.
I suspect the cause is what Blake said, increased low end (bass) response on the Amp. The Lemay mod changes the value of a coupling capacitor and the result is a relatively large increase in low end. Any (pickup) "hum" would be more apparent after the mod.
The Peavey factory mod does not change that capacitor.
I've tried it both ways and like it better without the cap value change that increases the low end. It sounds too "boomy" to me. Blake's Nashville 400 has that capacitor changed to the Lemay mod kit value and I've compared his amp to my Peavey factory modified Nashville 400 and prefer mine. |
|
|
|
Jason Lollar
From:
Seattle area
|
Posted 29 Oct 2001 11:39 am
|
|
You might try pulling the pickup and either foiling under the bottom of the pickup or in the pickup cavity and connecting it to ground. That can cure 80% of noise.
On Rick's the ground wire from the pickup is attached to the pickup assembly plate (if I recall correctly) so that shields the coil but Emmons dont have any shielding at least on the pickup. They are also very loosley wound with no potting which could cause a low end rumble sound but not an electrical type of noise. |
|
|
|
