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08-24-2006, 02:55 PM
| | Registered User | | Join Date: Oct 2005 Location: Springfield, il | | | Rev Solo hum
When I plug my solo into an amp I get what sounds like a ground hum.
I don't have this problem with my ebass, just the db. I have moved the rev in and out, sanded, wedged and nothing helps. Even if the pup is out of the bridge there is a hum. Anyone else have this problem? Anyone know how to fix it?
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08-24-2006, 02:58 PM
| | | | na mine doesnt hum, did you install it yourself? |
08-24-2006, 02:59 PM
| | Registered User | | Join Date: Oct 2005 Location: Springfield, il | | | yeah, I did. I moved it over to the bass side, as was suggested in your thread, but that didn't change anything. It has hummed since I got it. |
08-24-2006, 03:13 PM
|  | Oracle, Ancient Order of Rass Hattur | | Join Date: Apr 2004 Location: Connecticut | | Quote: |
Originally Posted by jonly yeah, I did. I moved it over to the bass side, as was suggested in your thread, but that didn't change anything. It has hummed since I got it. |
When did you get it? In any case, I suggest you give the folks at Upton a call. I am confident they'll take care of you. I have three Rev Solos and even the early ones with cabling that would not be expected to reject hum very well, worked just fine. Again-- give 'em a call. |
08-24-2006, 03:13 PM
| | Registered User | | Join Date: May 2004 Location: on the bottom in sw ohio | | Quote: |
Originally Posted by jonly When I plug my solo into an amp I get what sounds like a ground hum.
I don't have this problem with my ebass, just the db. I have moved the rev in and out, sanded, wedged and nothing helps. Even if the pup is out of the bridge there is a hum. Anyone else have this problem? Anyone know how to fix it? | I haven't found the original RS or RS2 to be particullarly sensitive to picking up hum. I have found, however, that the Fishman Full Circle hums with anything less than a top-quality cable, so I'd at least give another cable a try. Keep in mind that you're dealing with very high impedance devices here. You want a cable with as close to 100% shielding as possible. Many low to medium cost cables have considerably less than 100% shielding, and this information often isn't provided by the cable manufacturer. Planet Waves is one manufacturer of good-quality cables. If a better cable doesn't help, I'd contact Upton Bass. They're very helpful.
Last edited by robgrow : 08-24-2006 at 03:17 PM.
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08-24-2006, 03:17 PM
| | Oracle, Ancient Order of Rass Hattur | | Join Date: Apr 2004 Location: Connecticut | | Quote: |
Originally Posted by robgrow I haven't found the original RS or RS2 to be particullarly sensitive to picking up hum. I have found, however, that the Fishman Full Circle hums with anything less than a top-quality cable, so I'd at least give another cable a try. Keep in mind that you're dealing with very high impedance devices here. You want a cable with as close to 100% shielding as possible. Many low to medium cost cables have considerably less than 100% shielding, and this information often isn't provided by the cable manufacturer. Planet Waves is one manufacturer of good-quality cables. | Excellent advice-- I tacitly assumed (perhaps, improperly) that the cabling was checked first. It should not, however, require any "special" cabling. I realize, robgrow, that you were not suggesting that it does. |
08-24-2006, 03:27 PM
| | Registered User | | Join Date: Oct 2005 Location: Springfield, il | | | Great advice. I just shielded a 6 inch cable and gave that a shot, the hum was reduced drastically. Thanks a bunch! |
08-24-2006, 03:34 PM
| | Oracle, Ancient Order of Rass Hattur | | Join Date: Apr 2004 Location: Connecticut | | Quote: |
Originally Posted by jonly Great advice. I just shielded a 6 inch cable and gave that a shot, the hum was reduced drastically. Thanks a bunch! | Glad to hear that helped. What do you mean by you "shielded" a cable. Did you wrap tin foil around it? |
08-24-2006, 03:35 PM
| | Registered User | | Join Date: Oct 2005 Location: Springfield, il | | | are you going to laugh if I say yes? |
08-24-2006, 08:29 PM
| | Oracle, Ancient Order of Rass Hattur | | Join Date: Apr 2004 Location: Connecticut | | Quote: |
Originally Posted by jonly are you going to laugh if I say yes? | No, not at all. The hum would probably be knocked down even further if you connected the foil to the signal ground. Many good shielded cables employ both a stranded shield and a foil wrap. I'm curious to know whether your hum problem will be eliminated by the use of a good-quality shielded cable as robgrow suggested. |
08-25-2006, 11:09 PM
|  | Registered User
Maker of HPF-Pre upright bass preamp | | Join Date: Mar 2004 Location: Madison WI | | | I will have to admit I use tin foil extensively for shielding things on my test bench. It is a handy way to isolate shielding and grounding problems. |
08-28-2006, 09:31 AM
| | Registered User | | Join Date: Jan 2006 Location: Europe, Czech Republic | | | I had the same hum problem with RSolo (even with good shielded profi cables, including monstercables - nothing helped!!!), but NEVER had it with Underwood, which is really dead quiet in every situation.
RS´s low output and hum was the main reasons I got finally rid of it.
Last edited by carved czech : 08-28-2006 at 09:34 AM.
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08-28-2006, 06:57 PM
|  | Registered User
Vice President: Upton Bass String Instrument Co. | | Join Date: Mar 2002 Location: Warwick, RI & Stonington, CT | | and the reason we completely re-did it! For every 10 "I love it" comments we would get, there was the one "I can't use it" comment...and that absolutely drove us to (almost) drink.  |  | Thread Tools | Search this Thread | | | | 
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