Gain Before Feedback on EAW MicroWedge, L-Acoustics and D&B Wedges d&b technology

by royajade123VGUYF



00:00 Intro and description of products to test
00:32 Test decryption
01:14 level test matching
01:54 Distance matching
02:17 Mic test D&B M2
02;44 MicroWedge 15
03;11 L-Acoustics 115XT
03:30 MicroWedge 12
03:50 increase level to match feedback
05:50 Measure output levels
07:01 Summary of levels
07:16 All at 103db
09:07 Outro

Dave Rat spent many years designing the MicroWedge monitors. Here he does some ‘gain before feedback’ testing on D&B Audiotechnik M2, L-Acoustics 115XT HiQ, EAW MicroWedge 12 and EAW MicroWedge 15 stage monitors.

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Gain Before Feedback on EAW MicroWedge, L-Acoustics and D&B Wedges

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Gain Before Feedback on EAW MicroWedge, L-Acoustics and D&B Wedges
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40 comments

JOHN zhang 25/09/2021 - 10:34 Chiều

I did an interesting experiment. Two monitors were placed on the ground and the microphones were placed in the middle. The frequency response and level of the two speakers were all adjusted to the same level. At this time, if the same signal is pushed at the same time, logically speaking, The sound heard at the position of the microphone should be in the middle of the two speakers, but in fact it is not, even completely to one side

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Adam Robinson 25/09/2021 - 10:34 Chiều

Brilliant stuff

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Tommy Apex 25/09/2021 - 10:34 Chiều

just out of curiosity, how hot was your mic gain for this experiment??

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El Che Gordo 25/09/2021 - 10:34 Chiều

Great!! Grettings from mexico yeahhhh!!!

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Haze Anderson 25/09/2021 - 10:34 Chiều

Sorry for the distraction but I really should do my Youtube videos this way. Set up several wedges in a big warehouse and lecture to them. Sounds freaking great! Did I mention that I am not an engineer, but I do know a German engineer and a Czech one too … I said … a Czech one too ….

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Halim Sonoriste 25/09/2021 - 10:34 Chiều

What is the best in the 4 ?

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Keys By Mo 25/09/2021 - 10:34 Chiều

Is it ok if i sample this video for my new alarm clock ?

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VWGTI 25/09/2021 - 10:34 Chiều

Why not just make the band wear ear monitors instead….?

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Gary Johnson 25/09/2021 - 10:34 Chiều

My guitar player would still ask for more monitor…..he is frickin deaf….lol!

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Carlos Delgado 25/09/2021 - 10:34 Chiều

What does he mean by coax powered? NL4?

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DJ Nekkon "Remix Request" 25/09/2021 - 10:34 Chiều

Mr rat. You are the craziest of all, but i do love the orginally and the environment where you test the gear. I have used L'acoustics in many different ocations and i believe is the best off them all. Thanks for the video

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Иннокентий Орехов 25/09/2021 - 10:34 Chiều

I think there's some kind of dependency between max stable SPL and form factor of wedges with complicated reflection/resonance system of microphone plus face. I mean – the narrower (close to the size of the head) the wedge, then more higher stable SPL can be reached.

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Finn Rowden 25/09/2021 - 10:34 Chiều

how were you sure they were all the same volume?

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Michael David 25/09/2021 - 10:34 Chiều

How do people not go deaf after standing behind monitors for years on end?

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Nathaniel DeRusha 25/09/2021 - 10:34 Chiều

My dog woke up and ran out of the room!

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Peter Yianilos 25/09/2021 - 10:34 Chiều

Gain before feedback is largely a function of the consistency of a speaker’s dispersion and frequency response. It is the absence of lobes in the dispersion pattern that permits higher perceived volume before the onset of feedback. Smooth dispersion across the frequency spectrum is very hard to achieve, requiring serious research investment. Most pro companies show their speakers plots at a variety of frequencies. The ones with the smoothest response plots at a wide range of frequencies are going to be less susceptible to feedback, all other things being equal. It should be said that the same exact thing applies to the microphone. The polar plots give a lot of useful guidance.

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DanKauffman Music 25/09/2021 - 10:34 Chiều

I like the 2nd one from the getgo

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Don Ayala 25/09/2021 - 10:34 Chiều

I've had the pleasure of using "Pro Wedges" before and I can say that they are the best sounding monitors I've ever heard! Hearing your vocals in all ranges singing low like Elvis or high like Plant. With these you will be able to sing at your best!

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James Davis 25/09/2021 - 10:34 Chiều

You dont even need to worry about any of that if you use Bob Heil microphones. testes..testes… one two testes.

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renek755 25/09/2021 - 10:34 Chiều

Interesting video. I might be taking a too much of a technical approach, but isn't this just testing the frequency response of the wedges? You can actually see the dips on the spectrum analyzer. You could think of it as a factory eq'ed wedge. I can honesty say I don't know if i'd like that, the technical voice inside my head says I'd want to control the frequency of that dip myself. But then again it is probably pretty practical in the real world. I'll probably never know, the band I mix uses in-ear, makes it so much cleaner though.

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ricardo fogaça 25/09/2021 - 10:34 Chiều

what do you think about 15' woofer and drive monitor? 12'' is better? thanks

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chris close 25/09/2021 - 10:34 Chiều

hi dave one monitor you could of tried is the LE1500 from martin audio

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Don Bundy 25/09/2021 - 10:34 Chiều

Just landed here and checked out this video. When pushed hard I thought the MicroWedge 15 out performed the rest with the MicroWedge 12 coming in second. Nice design. Nice work.

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Erik B 25/09/2021 - 10:34 Chiều

Thank you ! 🙂

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BigHeartedMan65 25/09/2021 - 10:34 Chiều

HEY DAVE , It has been 7 years since you did this Video , It is about time you do a new one . This time do one on as many different monitors you can get your hands on to test . Also Leave out the Gated Reverb this time . Love learning from you . The Best places I have found to learn from are BAR BANDS . They are on the road 300 days a year working with equipment that is as old as dirt and HAVE to get by with what they own . But they make it work and Grow up to be like you … A Hard working Man .. Good Luck in all you do ..

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Mario Iannacci 25/09/2021 - 10:34 Chiều

Dave, thanks for sharing your knowledge. It seems to me like the Microwedge are slightly pre-eq'd from hearing the noise test? Still very interesting test. The toughest mons I've had to work with are the QSC KW122. The horn is not suitable for monitor duty IMHO…

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Resampling 25/09/2021 - 10:34 Chiều

Hey hey hey hey hey hey hey hey hey hey hey hey hey hey.

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Chris Harris 25/09/2021 - 10:34 Chiều

This is a useless comment I'm about to make. It drives me nuts to see somebody trampling his cords! Nice video.

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Hedsma 25/09/2021 - 10:34 Chiều

what program did you use to get the frequenz?

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VWGTI 25/09/2021 - 10:34 Chiều

Are there any plugins to control feed back?  I wanna start a little audio rental company but I am going to handle both monitor and front of house.

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Peter Swindley 25/09/2021 - 10:34 Chiều

Difficult to say whether this is really a fair test. it seemed to me that whilst the D&B probably was slightly less stable, the microphone was being aimed more directly at the wedge than with the other models. Plus we don't really get a sense of how clear each design is. For me, a good monitor provides the most clarity before feedback, which might be different to the gain before feedback. I still like the MWs however.

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Rafael Ospina 25/09/2021 - 10:34 Chiều

How do I connect 4 monitors separately ? 

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matthew devenish 25/09/2021 - 10:34 Chiều

Ah, just seen you take apart the monitors, split drivers as opposed to coaxial.

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matthew devenish 25/09/2021 - 10:34 Chiều

What are the likely reasons for the 3 dB difference between the D&B wedge and the microwedges?

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Dave Rat 25/09/2021 - 10:34 Chiều

I should do though to be honest so far I kind of do these videos last minute and fairly spontaneously when I have time and an idea. I do intend on putting together a better/cleaner setup to make the videos.

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Gizmologist1 25/09/2021 - 10:34 Chiều

Can I ask why you do not wear a wireless mic tied directly to the camera instead of using a camera mounted mic so your narration is properly recorded?

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Dave Rat 25/09/2021 - 10:34 Chiều

you can get them at any place that sells Mexican wear. Google "Baja Hoodie"

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Dave Rat 25/09/2021 - 10:34 Chiều

Yes, a strong amp makes a big difference.

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Dave Rat 25/09/2021 - 10:34 Chiều

great company, quality products, expensive but they are reliable and hold their value very well and are in high demand.

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Dave Rat 25/09/2021 - 10:34 Chiều

Well, first lets clarify. 1"(throat diameter) typically refers to drivers with 1.75" to 2" diameter diaphragms and 2" (throat) usually refers 3" or 4" diameter diaphragm drivers. Lets do the math on surface area (Pi*Rsquared and circumferences (Pi*D). 2" dia would be approx 3sq inches & 6 inches. A 3" would be approx 7sq inches and 9 inches& a 4" dia would be approx 12 sq inches and 12 inches. More surface area increases max output, more voice coil circumference increases power handling
2"=appro

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