Butterfield fan
17 posts
Apr 19, 2019
1:59 AM
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Hey guys still having issues with my Bassman RI that I hope you can help with.
I am playing through a SM57 and if I fully Cup the Mic I get this rumbling/rattling sound - like it is picking up my breathing and blowing more than the note I am playing. This is especially true if I am playing a lower key like a A harp.
It disappears if I un-cup the mike
the bass player was standing in front of the Amp and he could feel these rumbles on the back of his leg almost like the amp is inhaling air!!
I have changed the V1 to lower gain other 2 V's are 12ax7
I have also dialled down the bass and presence but it still happens - what am I doing wrong here?
Oh...I am also using a delay pedal and input is channel 1
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SuperBee
5886 posts
Apr 19, 2019
4:48 AM
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Have you tried a different mic?
The 57 is rather prone to handling noise.
I’m no expert in dealing with it but it’s a very popular mic so plenty of people will be able to help with that if it’s the problem
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barbequebob
3570 posts
Apr 19, 2019
8:24 AM
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Over the years, asa a general rule, I've found that all Shure mics egardless of what model they are tend to have handling noise problems an the louder that mic is, the worse it tends to get.
On the other hand, if it's ppicking up your breathing, then unfortunately, you're playing way too hard all the time.
Effect pedals won't cure any of those things but many people who play too hard are also more heavily prone to feeding back.
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Sincerely,
Barbeque Bob Maglinte
Boston, MA
http://www.barbequebob.com
CD available at http://www.cdbaby.com/cd/bbmaglinte
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Butterfield fan
18 posts
Apr 19, 2019
8:36 AM
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Thanks guys the only reason I moved to the shure is that when using green bullet or blows me away mic's I experienced more feedback, although I would prefer to use them. I am using a harp shield also.
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dougharps
1940 posts
Apr 19, 2019
10:22 AM
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While I have heard handling noise with my SM57, your post raised another possible cause.
If you hear rumble especially when using lower keyed harps and not all the time, handling noise would not be specific to the key of harp.
The possibility of a microphonic tube comes to mind, responding to low frequencies from the harp or even the bass, picked up through vibration.
Since you are hand holding, the mic should be isolated from floor rumble from the bass, unlike if it were in a stand picking up bass from the floor.
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Doug S.
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rogonzab
1089 posts
Apr 19, 2019
10:37 AM
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Sound or video sample available?
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Sorry for any misspell, english is not my first language.
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dougharps
1941 posts
Apr 19, 2019
1:50 PM
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Here is some amp troubleshooting info. Scroll down to the section entitled,
Is the amp making rumbling or glassy, high-pitched noises?
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Doug S.
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barbequebob
3571 posts
Apr 20, 2019
8:31 AM
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@Butterfield fan -- GB's are made by Shure and most bullet mics as well as some stick/ball mics have elements that are omnidirectional, which pick up sounds from ALL directions and always tend to be hotter and so you can't set it up as loud as ones with a cardiod or heart shaped pickup pattern and in order to make that pickup pattern work, you do have a lower output but in truth, if you were to measure the volume in decibels, it would be the same even tho the volume setting on the amp may be higher with a cardiod pattern in terms of the seeting number on the amp, but it's so easy to get fooled by that number as thinking you're getting more volume with less feedback in the process, but that really isn't true.
On the subject of a tube going microphonic, that IS a valid point and sometimes what may seem like a microphonic tube may actually be a tube getting loose almost to the point of falling out of its socket. It happens to any tube regardless if its new production or NOS, but that fro0mm experience, tends to be far more frequent with the newer production tubes.
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Sincerely,
Barbeque Bob Maglinte
Boston, MA
http://www.barbequebob.com
CD available at http://www.cdbaby.com/cd/bbmaglinte
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Butterfield fan
19 posts
Apr 21, 2019
4:19 AM
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some great advice and help here as always thanks all!!
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Christian Wasmer
17 posts
Apr 22, 2019
3:04 AM
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I did Hakan Ehn mods on my SM57, with bicycle tubes :
https://www.youtube.com/watch?v=w7ifIVLY6ag
but I put several layers of tubes (you need tubes from different rim sizes : mountain bike, street bike, etc).
I also inserted a silicon ring, normally a damper for amp tube (not to confuse tubes, bicycle & amps) which now makes a cool grip as it fits between my fingers and helps holding the mike.
https://www.tube-town.net/ttstore/Accessoires-pour-tubes/Tube-Dampers/Silicon-Tube-Damper-for-6L6::7190.html
Shock noises, hand noises, etc. are gone, but not the breathing noises or the undertones from adjacent reeds working together. Of course the cardioid pattern is lost, as it relies on the holes giving access to the back of the element, now totally enclosed in rubber. Cupping is much easier and I can totally isolate the mike if needed with a hand over the grid.
https://www.tube-town.net/ttstore/Accessoires-pour-tubes/Tube-Dampers/Silicon-Tube-Damper-for-EL34-KT77::7192.html
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Moon Cat
778 posts
Apr 22, 2019
6:33 AM
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Guys are right here the 57 can be noisy it is one of the reasons I stopped playing them and helped Lone Wolf develop my signature mic. The OTHER issue may be solved by COMPRESSION. Borrow an optical compressor pedal or buy one (you can always return it) and try it. The compression should cut the rumble a lot and make your notes more distinct when playing anything fast...LoNe Wold makes the Flat Cat just for harmonica but there are of course other options. Good luck!
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www.mooncat.org
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Butterfield fan
20 posts
Apr 23, 2019
3:13 AM
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Cheers both. I did see Hakan Ehn video a while back- he is great isn't he!! My favourite one is where he takes a old telephone and makes a harp mic!
Thanks for the help.
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mrrenault
3 posts
Apr 25, 2019
10:40 AM
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It can also be an EQ thing. You may have an overload of low in the mix. It might help to cut down on bass and give a bit more mid-range
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