|
|
Post by edwardbloom on Feb 17, 2023 22:30:32 GMT
so, a little while ago, i made a few more cables. i tested them, to make sure they are good. they are.
so i hook up both amps cause that's my eventual goal, to run 2 amps, 1 dirty, and one clean. thing is, i am getting an insane buzz. wtf?
if i use 1 cable, and go straight into either amp, it's fine. add in the pedal board, there is a tiny buzz. but 2 amps - loud hum from both amps.
what i did was guitar into a/b/a+b switch. then side a goes into the vibe, then into the board, then into the mesa. in the loop is the flashbackx4. side b goes directly into the vht. anyone have any ideas? i am wondering if it could be the amp switcher. it's about 3 years old, but i've only used it twice
|
|
|
|
Post by edwardbloom on Feb 22, 2023 19:13:56 GMT
i've experimented a little bit with this
it's not the cables
it doesn't seem to be the amps. i have run both amps separately with and without the board. it behaves normally
it's not the board. see above
it's definitely not the guitars
the two things left are the switch, and the power in my house. i haven't tried to figure out the switch because i don't know how i'd go about figuring out if there is some problem with it. it switches like it's supposed to, but maybe there is some ground issue inside of it?
the power in my house could be a thing. there is alot of stuff tied in with the outlets i use for my gear. some of that is probably a little sketchy. for example, my computer, modem, television, and powered monitors are plugged into the same outlet in my living room. if i turn off the kitchen light in just the right way, it makes a pop sound in my monitors, and i have to re start the computer in order to get the sound to come back on when i'm on youtube. the cd player and wmp still work, just not the sound in my browser. so yeah, s
could be some sort of ground issue.
anyone have any thoughts about this?
|
|
|
|
Post by stratosphere on Feb 23, 2023 15:02:52 GMT
i've experimented a little bit with this it's not the cables it doesn't seem to be the amps. i have run both amps separately with and without the board. it behaves normally it's not the board. see above it's definitely not the guitars the two things left are the switch, and the power in my house. i haven't tried to figure out the switch because i don't know how i'd go about figuring out if there is some problem with it. it switches like it's supposed to, but maybe there is some ground issue inside of it? the power in my house could be a thing. there is alot of stuff tied in with the outlets i use for my gear. some of that is probably a little sketchy. for example, my computer, modem, television, and powered monitors are plugged into the same outlet in my living room. if i turn off the kitchen light in just the right way, it makes a pop sound in my monitors, and i have to re start the computer in order to get the sound to come back on when i'm on youtube. the cd player and wmp still work, just not the sound in my browser. so yeah, s could be some sort of ground issue. anyone have any thoughts about this? If appliances with motors like fans or compressors are on the circuit with your amp, some noise could be possible if the grounding isn`t perfect. Solid state stuff shouldn`t be a problem usually if the wiring is correct
Running the set(amps) through a smart UPS with a power quality filter could eliminate noise from the house electrics if you can get your hands on one that can handle that sized load.
If the switch in question operates a light with a ballast(Florescent or LED), and the light/lights are reaching their service life, they could be a problem. It could be the switch, the ballasts in the light, or some bad wiring related to grounding.The pop you speak of is a potential voltage unloading itself into the system due to an as of yet unknown reason. There is a problem with a device or wiring some where in the circuit obviously.
If this voltage surge(pop) is strong enough to turn off some of your equipment, then it`s strong enough to shorten the life of said equipment. I would look into it.
|
|
|
|
Post by Sinster on Mar 6, 2023 19:22:29 GMT
I use noise isolation power strip a Tripp Lite ISOBAR6Ultra. It would work better if I didn't have a florescent light hanging over my amps.
|
|
|
|
Post by edwardbloom on Mar 9, 2023 20:54:33 GMT
I use noise isolation power strip a Tripp Lite ISOBAR6Ultra. It would work better if I didn't have a florescent light hanging over my amps. all my lights are led, and there is a ceiling fan in the living room where my amps are. the fan makes a noise that i only notice when i turn it off before bed at night |
|
|
|
Post by highdeaf on Mar 15, 2023 14:39:36 GMT
Does your a/b amp switcher have a ground lift switch? Try that. You may be tying two grounds together and getting a ground loop.
Also, if you are using two different AC receptacles in the room - and each receptacle is off a different breaker - that can cause hum and ground loops as well. Transformer isolating one amp's AC could eliminate that.
Good luck. While grounding seems simple, it often leads to complex, hard to troubleshoot problems.
|
|
|
|
Post by edwardbloom on Mar 20, 2023 1:02:47 GMT
Does your a/b amp switcher have a ground lift switch? Try that. You may be tying two grounds together and getting a ground loop. Also, if you are using two different AC receptacles in the room - and each receptacle is off a different breaker - that can cause hum and ground loops as well. Transformer isolating one amp's AC could eliminate that. Good luck. While grounding seems simple, it often leads to complex, hard to troubleshoot problems. i don't think it has that switch, i posted a pic so you can see it.  i am using 3 outlets: 1 for the mesa, 1 for the vht, and one for the board. all of them are on the same breaker though. someone else mentioned to me that because my lights are led, and there is a ceiling fan, that also might be a thing. some time this week, i am going to try it with the lights and the fan off, and see what happens. |
|
|
|
Post by Sinster on Mar 21, 2023 14:23:48 GMT
Have you tried just the A/B switch to amps? Try one amp on the individual channels of the switch and then toggle the switch to A and B. Do this on both channels. Then add one at a time your pedals to see which one is introducing the hum. Try plugging in and playing in another room that doesn't have all the EMF. A lot of stuff is wireless and you have cellular frequencies as well.
|
|
|
|
Post by edwardbloom on Mar 22, 2023 23:55:12 GMT
Have you tried just the A/B switch to amps? Try one amp on the individual channels of the switch and then toggle the switch to A and B. Do this on both channels. Then add one at a time your pedals to see which one is introducing the hum. Try plugging in and playing in another room that doesn't have all the EMF. A lot of stuff is wireless and you have cellular frequencies as well. i will try that with the switch |
|
|
|
Post by Sinster on Mar 29, 2023 14:30:20 GMT
How goes the battle?
|
|
|
|
Post by edwardbloom on Mar 31, 2023 2:39:06 GMT
have been insanely busy for the last week, i haven't had a chance to test. i did write 3/4 of a new song though. i have a rough recording of the guitar to a fake drum track. i have to write lyrics, set the final arrangement, add bass. i wasn't planning on it, it just sorta happened. i've been sitting on this idea for 6 or 7 years. i happened to end up hanging out with my buddy from my old band, and suddenly we were knee deep in finishing off a song we left behind. i have to say, i like how it turned out. if i don't screw it up, it's so far, a pretty cool song. |
|
|
|
Post by edwardbloom on Apr 4, 2023 2:28:02 GMT
i'm not sure this is everything, but i did manage to isolate 95% of it.
part of the problem is the effects loop on the mesa. when it is used, there is some noise. it's a known issue, mesa has a fix for it, i will have it done at some point.
another BIG part is, the ceiling fan/LED lights. shutting them off, made a dramatic difference.
the rest of it, i'm not totally sure about. the noise from the loop is magnified by the lights/fan.
using the mesa by itself, with the lights off and the fan off, without the loop, the amp behaves in an acceptable (to me) manner. there is a bit of noise but not much. the vht by itself, is pretty quiet without the lights and fan or other amp.
i haven't tried them together without the lights and fan and loop yet. next i will test them with the switch but one at a time. so far so good
|
|
|
|
Post by george on Apr 7, 2023 4:25:14 GMT
Build a faraday cage out of chicken wire and stand inside that when you’re playing should clean up all kinds of hum .. lol
|
|
|
|
Post by edwardbloom on Apr 7, 2023 4:52:39 GMT
Build a faraday cage out of chicken wire and stand inside that when you’re playing should clean up all kinds of hum .. lol i found another good way to eliminate hum this afternoon... i learned the lyrics  |
|
|
|
Post by edwardbloom on Mar 5, 2024 1:31:18 GMT
finally solved this issue!!! bought this switcher, and now the amps are dead silent when i'm not playing. wooot!!!  |
|
|
|
Post by george on Mar 8, 2024 23:20:21 GMT
I bought a two loop switcher awhile back and returned it because every time I hit the switch it sounded like a .38 going off. Got a single loop switch and it’s not so bad.
I find that my P90 guitars kick up a lot of hum at home and are quieter when I go somewhere and play in a bigger room. Could also be the power where I live.
Kinda gave up on the P90s because the bridge on my LP gets me near enough to what I was using the Jr for.
Although for the last month or two I been running a Broadcaster into a 57 Custom Deluxe with EB 10.5s no pedals. I really like the 7.25 radius on the Broadcaster and with whatever pickups it has its the most express guitar that I have.
|
|
|
|
Post by edwardbloom on Mar 10, 2024 19:40:09 GMT
Although for the last month or two I been running a Broadcaster into a 57 Custom Deluxe with EB 10.5s no pedals. I really like the 7.25 radius on the Broadcaster and with whatever pickups it has its the most express guitar that I have. over the years, i've owned ALOT of different guitars. i don't know about anyone else, but for me, the ones i really seem to bond with are not what i usually expect. it's as if somewhere in the "getting to know you" phase, i discover some aspect of it that just... fits me in some way that others don't. since i chose every guitar i ever owned, maybe i unconsciously noticed whatever it was, and it didn't register right away. i dunno. |
|
