Karaoke Forums

Hi,

We have a karaoke setup in my back room and I find it is very easy for the speakers to kiss due to the sensitity of the Microphones(Shure Beta 58A). We sit about 5 metres away from the Yamaha Club 15 inch series speakers.

Are there any settings onthe amp I can change to make it less senstive without having tos cream into the mic? I have adjust the compressor to minimum which helped but the interferance still comes here and there. I notice it comes more when the mics are near each other. Is this true? I thought it is more from the interferance between the mics and the speakers not mics with each other.

Cheers

You need an EQ. You need to identify the frequency that is feeding back and cut it using the EQ, that's about the only way to do this right.

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DJ Tony
Let It Rip Karaoke

The mics being near each other shouldn't matter that much.

You could probably fix this with speaker placement. If you have the speakers on stands, put them as high as you can. If you don't have them on stands, twist them 15-45 degrees off axis from your mic.

Also, mic technique. When you sing, keep the base of your mic pointing in the direction of the speakers as much as possible.

I have a Beta 58 as well, and it is more sensitive to lower frequencies, so it wouldn't hurt to cut the bass a bit as well.

Finally, if you are going to only be 5 meters from the speakers, then just the sheer volume is going to come into play. At that distance, there is going to be a energy/volume level where your mics are going to hear the speakers no matter what else you do, and that causes feedback. You may need to either back off the volume a bit, or learn how to balance your entire system so that you are using less actual energy to get the same perceived volume. Do a google search for balancing a PA system. If you learn this, then with a good mic you can usually stand just a few meters from the speaker without feedback.

A combination of those things should practically eliminate your feedback.

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C Mc
KJ, FL

Thanks all

I give this a go tomorrow and see how it go. I love bass so I have the bass really high. Maybe thats why it is causing problems.

I will also try to angle the speakers abit to see how it goes as well.

Cheers

You're original post made it sound as though speaker placement wasn't negotiable. As Topher pointed out, the easiest way is to get out from in front of the speakers or keep the mic pointed away from them. Depending on the room you're in, most of the time if you can't stand behind the PA the next best option is to put the PA on the opposite wall facing you.

The comment you made about having the bass "really high" concerns me too. That is a common mistake many DJ's make too and it leads to premature speaker failure. Reproducing sub-low (bass) frequencies takes far more power from your amplifier than higher frequencies. Especially in your circumstance where you have no sub-woofer, relying on your full-range cabinets to produce an over abundance of these low end frequencies causes your amp to work harder as well as your speakers. Additionally, you're very likely compensating for frequencies that are not present because the speakers are simply incapable of reproducing them (i.e. See your frequency response specs for those speakers). Trying to force feed them signals they can't reproduce can cause serious issues in terms of heat and distortion.

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DJ Tony
Let It Rip Karaoke

He didn't say what amp he is using but our Yamaha amp has a setting that is made to amplify the bass when it is working in conjunction with the Club speakers. Don't know if he meant he was using that. We have tried it and it has sounded good in one situation and a bit muddy in others. Do you think using that feature would shorten the life of the speakers even though it is made to do it?

He stated in his topic heading
EMX 512SC - this is a mixer/amp.

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LIKE Lonman on Facebook - Lonman Productions Karaoke & my main site via my profile!

I wouldn't anticipate that would be an issue, especially if it's specifically meant to be used with the club speakers. As long as you're keeping the bass frequencies comparable with the levels of the rest of the program material it is fine. What I've seen from DJ's (and what it sounds like this person is describing) is this goofy desire to have unnatural and excessive amounts of low end so they jack the EQ to push it out of the system. This results in distortion and heat build up because the bulk of the power is going to producing that excessive low end so the rest of the range suffers. As a result, they turn up more to get higher levels in the rest of the range resulting in the amp working even harder still.

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DJ Tony
Let It Rip Karaoke

Oops, overlooked that the amp was stated. Ours is the P5000S that has the "sub-woofer" button on the back. We were going to get the amp/mixer to use with our Clubs but "some guy on a forum" advised using more amp power and it has worked out well for us.

Ok, as most of you on here will concur, I'm just a dummy, and I've never heard the term "speakers kiss". Does that mean feedback?
Bringing two mics very close together has almost always produced feedback in my experiences.....but then again, maybe I just do things wrong.
But once again, I need to know what kissing speakers translates to before I say another word........thanks in advance......jj

It's obvious Johnny.







It's a full blown electronic orgy mate.

Jerry, I'll say it again. You are sooooo baaad. You naughty boy you.

That's not exactly fair.
Johnny put me up to it.

Saying that.
It does look a bit contrived.

Yupe thats me

I am thinking about getting a seperate sub as well for my dj music but currently it sounds good with the bass turn up and YSS on the amp on.

The speakers are facing us for Karaoke and are about 1.5 metres off the ground. As the deadzone for the Beta58A from what I remember is around 45% from the back of the mic, I thought this setup shouldn't give me any problem.

Thank you for everyone comments

http://www.viennaacoustics.at/products/ ... e_kiss.php

I have owned and used the Yamaha EMX512SC this is a great little amp/mixer.
It has a built in EQ.
play around with speaker placement but I would suspect that you are set too high on the midrange adjustment. Yamaha makes some great equipment and in a smaller venue the EMX512 is more than capable of doing a nice job. I have never been disappointed with the sound quality of it.