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Author Topic: EAW BH760  (Read 2813 times)

Helge Dr. Bentsen

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EAW BH760
« on: December 14, 2016, 04:55:30 pm »

I came across a deal of 8 EAW BH760. It's tempting.

How do they stack up these days against modern 2x18"?

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Mac Kerr

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Re: EAW BH760
« Reply #1 on: December 14, 2016, 07:56:06 pm »

I came across a deal of 8 EAW BH760. It's tempting.

How do they stack up these days against modern 2x18"?

Probably pretty good, the spec is plus/minus 3dB from 29Hz-100Hz, with a long term output of 139dB. IIRC however at least the bandwidth spec was based on the intended pack of 4 to create a large horn with a 60"x60" face, 45" deep, weighing 1000lbs. They were not really intended to be used singly.

Mac
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Stu McDoniel

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Re: EAW BH760
« Reply #2 on: December 14, 2016, 07:58:17 pm »

I came across a deal of 8 EAW BH760. It's tempting.

How do they stack up these days against modern 2x18"?
Weight might be a factor for you.  115Kg or 253lbs per box.  That is over a ton on your truck or trailer.

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Helge Dr. Bentsen

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Re: EAW BH760
« Reply #3 on: December 15, 2016, 10:16:23 am »

I owned Labsubs for a few years, they were pretty good in stacks of three and upwards.
Really miss those subs.

Can I expect similar performance?
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Ivan Beaver

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Re: EAW BH760
« Reply #4 on: December 15, 2016, 01:06:10 pm »

I owned Labsubs for a few years, they were pretty good in stacks of three and upwards.
Really miss those subs.

Can I expect similar performance?
The Labsub was a project that was intended as a DIY to offer better performance than the commercial cabinet.
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A complex question is easily answered by a simple-easy to understand WRONG answer!

Ivan Beaver
Danley Sound Labs

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Marjan Milosevic

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Re: EAW BH760
« Reply #5 on: December 16, 2016, 03:45:10 am »

I have a mixed feeling about that sub.
They can kick like nothing else, but those 29hz are pure fiction.
Note that i have used 40 of those subs in one pile and they were nowhere near close to 29hz.

Helge Dr. Bentsen

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Re: EAW BH760
« Reply #6 on: December 16, 2016, 06:30:18 am »

Marjan:
I had 24 KF760+24 BH760 last year in Slovenia.
That sounded all right, but it was a metal show, so it doesn't need that much 29 hz.

Labs didn't go that low either, pretty good to around 35hz IIRC.

I like subs with a "quick" response or kick as people often call it.
What do you recon it's "real" low frequency cutoff is?


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Marjan Milosevic

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Re: EAW BH760
« Reply #7 on: December 16, 2016, 06:39:47 am »

There is a big KF760 BH760 rig here, heard it on almost any type of music you can think of. never dropped very low. 35hz is perhaps the usable low extension.

We had 40 of them for David Guetta here at the stadium along with 16 EAW Anya per side. Subs could not keep up and didnt wend as low as i would like them to.

This company here has them for like 15 years or so, blowed lot of drivers. So be carefull with them if you get them.

You have probably heard that same system i am talking about.

I still have two out of 8 labs i build back in 2003. They drop waay lower then bh760.
« Last Edit: December 16, 2016, 06:42:01 am by Marjan Milosevic »
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Helge Dr. Bentsen

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Re: EAW BH760
« Reply #8 on: December 18, 2016, 07:24:17 am »

Probably the same rig.
Good local crew, it was a nice day.

I sold the Labs because I didn't like the form factor and lack of handles.
BH760 has a more appealing shape and handles.

I'm putting together an old EAW rig for fun.
Got 4+4 KF650Isr/Sb600 and 8 KF750 for cheap. The plan for 2017 is to paint the KF750 and replace a pair of drivers. KF650/SB600 was redone this year, swapped a couple of drivers and modified them to NL8.

I need subs for the KF750s some day, no hurry. I can rent for the very few shows this rig will do in 2017.



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Marjan Milosevic

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Re: EAW BH760
« Reply #9 on: December 18, 2016, 07:47:43 am »

Labs could be fitted easy with handles man.

Ivan Beaver

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Re: EAW BH760
« Reply #10 on: December 18, 2016, 09:41:16 am »

Labs could be fitted easy with handles man.
I have seen all kinds of different "versions" of the lab sub.

Some were EXCELLENT-finished with stacking skids, proper handles, great finish etc.

Others skipped on the basic design "because it was to hard to build".

They did not perform well-I wonder why-------------

Handles and wheels are something that BUILDER should be adding to suit their needs, not the basic acoustical design that Tom Danley did.

The "form factor" is the easy part.  You just have to want to do it.  Of course it adds costs and build time, but that was part of the idea of the whole project.

To provide a basic design that would perform well, and let people customize as they wanted to.

Sorry, but when somebody complains about "lack of handles"-that is their own fault for not putting them in.
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A complex question is easily answered by a simple-easy to understand WRONG answer!

Ivan Beaver
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Helge Dr. Bentsen

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Re: EAW BH760
« Reply #11 on: December 18, 2016, 03:17:49 pm »

Ivan.
I didn't build the subs, I bought then used :)
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Marjan Milosevic

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Re: EAW BH760
« Reply #12 on: December 18, 2016, 03:53:56 pm »

I tried to find a picture of Tako Tamas's labsubs, they were fantastic. But no luck :-(

Helge, fitting handles on already build subs should not be a problem. But that is all too late now. :-)

Helge Dr. Bentsen

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Re: EAW BH760
« Reply #13 on: December 18, 2016, 04:00:24 pm »

Are you thinking about the ones that looked like a SB28?

Those we're a great build :)
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Tim McCulloch

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Re: EAW BH760
« Reply #14 on: December 18, 2016, 04:26:34 pm »

Are you thinking about the ones that looked like a SB28?

Those we're a great build :)

Yes.  They were nicely done.  Interlocking stacking provisions and HDPE runners, lots of handles and the finish color was very "l'Acoustic" to me.
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Helge A. Bentsen

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Re: EAW BH760
« Reply #15 on: December 24, 2016, 09:49:38 am »

I actually found a drawing of the first pair of horns I built when I was 18 back at my parents house.

Loaded with Zomax P1865 they we're fantastic at the time. Today my ears tell me that they sound decent but a bit "one-notey". I always liked the form factor on these, it's pretty close to a BH760.





I've always wondered if a different driver could unlock some performance in these, they we're actually pretty easy and cheap to build. Sadly I guess the design is limited in it's potential.


Sent from my iPhone using Tapatalk
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Ivan Beaver

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Re: EAW BH760
« Reply #16 on: December 24, 2016, 11:18:10 am »

I actually found a drawing of the first pair of horns I built when I was 18 back at my parents house.

Loaded with Zomax P1865 they we're fantastic at the time. Today my ears tell me that they sound decent but a bit "one-notey". I always liked the form factor on these, it's pretty close to a BH760.





I've always wondered if a different driver could unlock some performance in these, they we're actually pretty easy and cheap to build. Sadly I guess the design is limited in it's potential.


Sent from my iPhone using Tapatalk
As with most/all horn designs the Keele W cabinet is pretty sensitive to the driver choice.

And in most cases using a "better" driver will actually yield WORSE performance.

The driver must be matched to the horn.

In the case of the Keele design, it was designed for the JBL K151, a bass guitar speaker.  If you put the "better" JBL PA driver in it, you got less output.

In some cases the better drivers are simply "to strong" for proper horn loading.

There is a bit of an "art" to horns.  NOT just simply sticking a driver in it and hoping  a better driver will work better.

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A complex question is easily answered by a simple-easy to understand WRONG answer!

Ivan Beaver
Danley Sound Labs

PHYSICS- NOT FADS!

MikeHarris

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Re: EAW BH760
« Reply #17 on: December 24, 2016, 02:15:51 pm »

We did a few fixed installs with the BH880...it's bigger brother. EAW made a few BH440 for me...the 880 cut in half
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Helge Dr. Bentsen

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Re: EAW BH760
« Reply #18 on: December 24, 2016, 04:16:33 pm »

As with most/all horn designs the Keele W cabinet is pretty sensitive to the driver choice.

And in most cases using a "better" driver will actually yield WORSE performance.

The driver must be matched to the horn.

In the case of the Keele design, it was designed for the JBL K151, a bass guitar speaker.  If you put the "better" JBL PA driver in it, you got less output.

In some cases the better drivers are simply "to strong" for proper horn loading.

There is a bit of an "art" to horns.  NOT just simply sticking a driver in it and hoping  a better driver will work better.

Yes, that's why I never bothered trying a different driver.
It would however been interesting to run this design trough Hornresp or similar to see what kind of driver actually fits in this horn and where it unloads..
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Ivan Beaver

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Re: EAW BH760
« Reply #19 on: December 24, 2016, 05:08:53 pm »

Yes, that's why I never bothered trying a different driver.
It would however been interesting to run this design trough Hornresp or similar to see what kind of driver actually fits in this horn and where it unloads..
If I remember correctly, this design was intended for 60Hz and up.

Back when it was designed, there was not a lot of low freq in music.

At least was we now consider it.
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A complex question is easily answered by a simple-easy to understand WRONG answer!

Ivan Beaver
Danley Sound Labs

PHYSICS- NOT FADS!
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