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Author Topic: no feedback?!?!  (Read 4656 times)

Keith Broughton

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no feedback?!?!
« on: August 27, 2014, 11:17:14 AM »

Imagine my surprise that after all these years of mixing monitors that an Italian speaker manufacturer has come out with this claim on their website...

Quote
"COMPLETE ABSENCE OF FEEDBACK

The advantages of the coaxial transducers are

the complete absence of feedback and, thanks to the coherent single spherical wave front with a perfect dispersion control, a perfect listening in every position. "

I wrote an email to take them to task on, what I see as,  false claims. Nothing new I guess...
Oh, and the grammar... :o

 :o ::)
« Last Edit: August 27, 2014, 11:20:11 AM by Keith Broughton »
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Brian Jojade

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Re: no feedback?!?!
« Reply #1 on: August 27, 2014, 11:26:51 AM »

It's very possible to create a speaker with no possibility of feedback. Just eliminate the input connection on the speaker.  Duh.
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Brian Jojade

Steve M Smith

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Re: no feedback?!?!
« Reply #2 on: August 27, 2014, 11:29:38 AM »

Or don't fit a voice coil or a magnet.

If they're so good, we should use them for everything!


Steve.
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Thomas Le

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Re: no feedback?!?!
« Reply #3 on: August 27, 2014, 11:41:53 AM »

If it's an active model, maybe it has built-in feedback killer?
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g'bye, Dick Rees

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Re: no feedback?!?!
« Reply #4 on: August 27, 2014, 11:44:45 AM »

If it's an active model, maybe it has built-in feedback killer?

You're kidding, right?
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Tim McCulloch

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Re: no feedback?!?!
« Reply #5 on: August 27, 2014, 11:58:21 AM »

If it's an active model, maybe it has built-in feedback killer?

Yes.  His name is Guido, and he pays you a little 'visit' if there is a squeal, howl or rolling rumble.  He only pay one visit, however.  You learn fast or find you can't mix with prosthetic hooks.  ;)
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Keith Broughton

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Re: no feedback?!?!
« Reply #6 on: August 27, 2014, 02:23:05 PM »

Yes.  His name is Guido, and he pays you a little 'visit' if there is a squeal, howl or rolling rumble.  He only pay one visit, however.  You learn fast or find you can't mix with prosthetic hooks.  ;)
LOL!!! ;D ;D
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Ivan Beaver

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Re: no feedback?!?!
« Reply #7 on: August 27, 2014, 06:55:01 PM »


I will agree that a coaxial design has the POSSIBILITY of better gain before feedback-but not the ELIMINATION.

HOWEVER just because it is a coax does NOT mean that you can get a better response out of it.

There are two factors that have to be considered.

The First is having a good physical alignment between the woofer and HF driver.  Not all drivers "allow" for a good crossover alignment.

The next is the actual crossover design. Of course if the driver is physically wrong-there is nothing you can do in the passive crossover to fix it.

I have no idea what manufacturer is in question, but there are examples all over the place of products that "think" they do something that is impossible.

But that does not stop the marketing dept. ;)
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Samuel Rees

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no feedback?!?!
« Reply #8 on: August 27, 2014, 07:48:17 PM »

The company is question is RCF and this is in the description for the NX series of bi-amp'd powered wedges. No need to beat around the bush.... It's certainly hyperbole. In fairness, as a modern DSP processed coax wedge, in my experience it has above-par GBF feedback on the usual mics compared to popular competitors. That is what they should have said - it should be enticing enough to say that. Don't let their marketing departments flashy language turn you off from the box though :) it's a great box.
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Steve M Smith

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Re: no feedback?!?!
« Reply #9 on: August 28, 2014, 02:55:14 AM »

I have no idea what manufacturer is in question

RCF.
 
If you highlight a section of the sentence quoted and do a Google search for it, you will find the claim on their website and the websites of others selling the product.
 
 
Steve.
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ProSoundWeb Community

Re: no feedback?!?!
« Reply #9 on: August 28, 2014, 02:55:14 AM »


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