Feedback Mic help

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06-06-2019, 01:29 PM
djderek1971

Feedback Mic help

Looking for some suggestions for a decent hand held radio mic resistent to feedback (if there is such a thing). The set up I currently have includes 2 RCF tops and 2 RCF bass cabs, however I constantly get feedback through my Shure SM58 despite tweaking the equaliser and always being behind the speakers. I know that bass bins should be further away from the set up but because I use poles to connect the bins to the tops, they sit to the side of my fold away booth and I dont want to change that and dont want to take so much bass out of my mic that I sound like im 12! Are there any radio mics that anyone can suggest that are great for vocals but goot for avoiding feedback. cheers
06-06-2019, 01:49 PM
ppentertainments

Quote:

Originally Posted by djderek1971

Looking for some suggestions for a decent hand held radio mic resistent to feedback (if there is such a thing). The set up I currently have includes 2 RCF tops and 2 RCF bass cabs, however I constantly get feedback through my Shure SM58 despite tweaking the equaliser and always being behind the speakers. I know that bass bins should be further away from the set up but because I use poles to connect the bins to the tops, they sit to the side of my fold away booth and I dont want to change that and dont want to take so much bass out of my mic that I sound like im 12! Are there any radio mics that anyone can suggest that are great for vocals but goot for avoiding feedback. cheers

What playout system / mixer are you using ?
06-06-2019, 02:03 PM
rth_discos

What sort of feedback?

The frequency of the feedback will be very telling (ie a deep rumble or a high pitched squeel)
06-06-2019, 02:04 PM
djderek1971

Quote:

Originally Posted by ppentertainments

What playout system / mixer are you using ?

Hi
I am using an Allen and Heath Zed FX12
06-06-2019, 02:40 PM
Excalibur

Quote:

Originally Posted by ppentertainments

What playout system / mixer are you using ?

I'm sure many of us were going to guess Denon MC 6000.:) That's a favourite for hot mic channels

Quote:

Originally Posted by djderek1971

Hi
I am using an Allen and Heath Zed FX12

Fine piece of kit, two questions:
1) Are you running your mic(s) from the FX12?
2) Have you got effects running on the mic channels? Excessive use of these is another good way to generate feedback.

As asked earlier, if the feedback is a rumble rather than screech, it's odds on for physical transmission up the mic stand. How many guesses did we get right? :)
06-06-2019, 03:35 PM
ppentertainments

Quote:

Originally Posted by Excalibur

I'm sure many of us were going to guess Denon MC 6000.:) That's a favourite for hot mic channels

The voice of experience :D
06-06-2019, 03:36 PM
djderek1971

Quote:

Originally Posted by Excalibur

I'm sure many of us were going to guess Denon MC 6000.:) That's a favourite for hot mic channels

Fine piece of kit, two questions:
1) Are you running your mic(s) from the FX12?
2) Have you got effects running on the mic channels? Excessive use of these is another good way to generate feedback.

As asked earlier, if the feedback is a rumble rather than screech, it's odds on for physical transmission up the mic stand. How many guesses did we get right? :)

Yeah the feedback is a a rumble rather than a high pitch squeal! (im making the noise right now but cant think of a work to mimic it) lol
I am using my mic in the FX 12 mixer but I get this with the effects off as well as on!

Is there a mixer with decent reverb effects that anyone can recommend. I need 3 mic channels, 1 input for laptop and 2 for L/R MP3 player.
06-06-2019, 04:13 PM
ppentertainments

Maybe a silly question but how high are you holding the mic ie are you sitting down ?
A rumble in that situation sound like it is the bass bins giving the feedback - My RCFs are quite sensitive for that too. Are the speakers sounding ok when playing music ? Also how far apart are they, if the mic is being used at their 'sweet spot' (sorry can't remember the correct phrase) this can cause similar problems
06-06-2019, 04:48 PM
rth_discos

How are you setting the level for the mic?

Try turning the gain down until this stops happening

You'll need to hold the mic very close to your mouth to get volume.

If you're holding the mic 6 inches away from your mouth then you will have feedback trying to get the gain you need.
06-06-2019, 06:30 PM
djderek1971

Quote:

Originally Posted by ppentertainments

Maybe a silly question but how high are you holding the mic ie are you sitting down ?
A rumble in that situation sound like it is the bass bins giving the feedback - My RCFs are quite sensitive for that too. Are the speakers sounding ok when playing music ? Also how far apart are they, if the mic is being used at their 'sweet spot' (sorry can't remember the correct phrase) this can cause similar problems

I dont sit during gigs. always standing, but the music sounds fine. I have one of the fold down booths with the overhead lighting bar so the speakers sit either side of that and slightly infront of me, so maybe around 8/10 feet apart.
07-06-2019, 08:03 AM
Excalibur

You've got good quality kit, the only obvious things I can suggest at this distance are to try/borrow a different mic, particularly Sennheiser, or even SM58 Beta. Also, are you holding the mic, or using it in a stand? The vibrations from the subs may be travelling up the metal, and causing the problems.

Good luck, keep us posted.
07-06-2019, 11:06 AM
Nakatomi

Sm58s are quite poor at rejecting bass feedback compared to other mics I've used. Knock-off Sm58s even more so.. There are a lot of fakes out there today. I'm not casting aspersions here but are you sure it's a genuine Shure? ;)

Things to try..

If you hold the mic in your hand, make sure you're not cupping the head (oooeerr) with your palm.. Blocking the rear vents of the mic head can really mess up feedback rejection..

Use the mic nice & close so you can reduce the channel gain if you don't already.

Try moving your speakers further apart or closer together in increments of 6 inches or so. When subs are placed apart, you can get 'nodes' where bass is louder or quieter depending on lateral distance... Move a bit to the left & some frequencies predominate while some are quieter.. Move a bit more & things swing the other way.

Also try using the mic closer to one speaker stack than the other.

Being close to walls can also bring issues with bass prominence, as can being in a corner so try to avoid being too close to walls if you can.

Oh & another thing... I tend not to leave any mic channel 'open' when it isn't being used. Any mic, when placed on a flat surface while its mixer channel is still 'on' can be a reliable source of that nasty low pitched "wuhhhhhhh" noise ;)
07-06-2019, 02:52 PM
djderek1971

Quote:

Originally Posted by Excalibur

You've got good quality kit, the only obvious things I can suggest at this distance are to try/borrow a different mic, particularly Sennheiser, or even SM58 Beta. Also, are you holding the mic, or using it in a stand? The vibrations from the subs may be travelling up the metal, and causing the problems.

Good luck, keep us posted.

Thanks for that. I might try getting hold of a directional sennheiser mic and maybe also look at upgrading my mic cables. Will also try moving the bass cabs further away and using the tops on tripod stands to see if there is any difference. I would like a decent radio mic but dont want to invest until I know what is best suited to my gear. Thanks for the input
07-06-2019, 04:05 PM
djderek1971

Quote:

Originally Posted by Excalibur

You've got good quality kit, the only obvious things I can suggest at this distance are to try/borrow a different mic, particularly Sennheiser, or even SM58 Beta. Also, are you holding the mic, or using it in a stand? The vibrations from the subs may be travelling up the metal, and causing the problems.

Good luck, keep us posted.

Ok I am getting somewhere. Set up out in my garage (never usually have the time) Feedback was awful down my SM58 even with no music playing. First thing I noticed is that handling the mic was coming through the sytem loudly. If I tap the metal casing down the side of the mic, it comes through the speakers clearly and when I handle it, the movement of my hand causes rumbling. I dug out an old cheap mic that I think I got free years ago as a deal with some Karaoke gear, guess what, no feedback. I could still hear the handling a bit as well but its a cheapo mic. With the cheap mic, having it switched on and the volume up but not speaking, I could hear a very slight buzz, so im thinking firstly a new cable required. But as far as the SM58 goes, is it gubbed and if so can anyone recommend what mic I could try next. Ideally I want a good quality radio mic but the set that gives 2 hand held mics so they can be used for Karaoke also. Either another Shure set or a Sennheisser? Only want handheld, no clip ons or headsets. Sorry that is about 10 questions in 1.
07-06-2019, 04:06 PM
rth_discos

Can you clarify how you're holding it? How close to your mouth is the microphone you use?
07-06-2019, 04:09 PM
rth_discos

Quote:

Originally Posted by djderek1971

can anyone recommend what mic I could try next.

I tested this out at BPM and was blown away by the sound quality for DJ use.

http://www.instruments4music.co.uk/v...e/27489_p.html
07-06-2019, 04:18 PM
djderek1971

Holding it horizontally and practically touching the mouth. As I say, plugged in the cheapo mic and the feedback dissapeared. Pretty sure my SM58 should not make loud noises when handling it. Mic must be gubbed (Yes it is a genuine SM58 but had it a while)
08-06-2019, 12:29 PM
djderek1971

Quote:

Originally Posted by Excalibur

You've got good quality kit, the only obvious things I can suggest at this distance are to try/borrow a different mic, particularly Sennheiser, or even SM58 Beta. Also, are you holding the mic, or using it in a stand? The vibrations from the subs may be travelling up the metal, and causing the problems.

Good luck, keep us posted.

Have been looking around and I am looking at 2 different Radio Mic sets. I want a Duel set so am pondering between Sennheiser XSW 1-825 Dual Handheld Set and Shure BLX288E/PG58-S8 Dual Handheld Wireless Microphone System

Does anyone have an opinion on which is the better all round mic. (I am just a little reserved about the Shure ones as the SM58 is the one causing me problems at the moment but I cant remember it always being like this which is why I am wondering if it is now faulty. I would appreciate any opinions on these sets or any other similar good quality duel radio systems as there seems to be very little in the way of reviews on these 2 sets. Thanks folks
08-06-2019, 02:05 PM
rth_discos

You can't go wrong with Sennheiser.

Personally I've always preferred a wired mic for use behind the booth.
08-06-2019, 03:57 PM
Excalibur

Quote:

Originally Posted by rth_discos

You can't go wrong with Sennheiser.

Personally I've always preferred a wired mic for use behind the booth.

Absolutely agree with both points, but I find a wired mic for the booth, and a dual radio kit gives the best of both worlds, and may only take two channels.

I have no experience of the two sets mentioned above, so can't give first hand advice, but I can suggest one I'm very happy with, the W Audio DTM duals. Bombproof so far, less dropout and better range than better names I've had. These are top of the range, I've heard good things about the cheaper ones, but can't speak from personal experience.
08-06-2019, 11:16 PM
ppentertainments

I prefer a wired mic too, unfortunately mine is for speech only and doesn't work if people sing through it (ie wanting karaoke)

Amazing the amount of people that believe that :rolleyes::zip::daft::daft::daft:
09-06-2019, 08:10 AM
Excalibur

Quote:

Originally Posted by ppentertainments

I prefer a wired mic too, unfortunately mine is for speech only and doesn't work if people sing through it (ie wanting karaoke)

Amazing the amount of people that believe that :rolleyes::zip::daft::daft::daft:

I always though that was true? :whistle:
09-06-2019, 03:35 PM
djderek1971

Quote:

Originally Posted by ppentertainments

I prefer a wired mic too, unfortunately mine is for speech only and doesn't work if people sing through it (ie wanting karaoke)

Amazing the amount of people that believe that :rolleyes::zip::daft::daft::daft:

Thanks guys

Will have a look at the other Radio mics suggested as they are also considerably less money so If I go for them I will also get a Cabled Sennheiser E835 for the booth and have the radio mics for out and about and Karaoke. Also going to invest in some Planet Waves Custom Mic leads (seem to be decent reviews and quality)