Help With Small/Short Mid Horn for EVDH1012A

76.177.204.185

Posted on February 12, 2015 at 06:10:47

Synthsayer
Audiophile

Posts: 113
Location: Lexington, KY
Joined: December 20, 2009

I have a pair of old EVDH1012 drivers mounted on EV HR9040 Large Format horns.
I like the EV Driver, but I bought the driver/horns before I knew very much about the different types of horns, i.e. Tractrix, Exponential, Constant Directivity, etc. I still know very little about the different types other than basic info. Horn design is way beyond my skill set!
The HR9040s sound nice but are nothing short of behemoths and I would like something much smaller.
I would like to build a smaller or shorter horn for use with the EV driver that has a LF cutoff of 400Hz.
The driver can be crossed over fairly low at 400Hz. I would like to have crossover at 500Hz and have a length of 10 to 14 inches if possible???
I will use a tweeter if necessary, crossed over at 5kHz???
Preferably, I would like the EV driver to go as high as possible.
Hornresponse looks to be a great program but I don't understand it well enough to use it properly.
I would really appreciate whatever help anybody give me with a simple horn design for the EV driver.
It is a 4 bolt 1.3 inch throat.

I will attach the spec sheets for the EV DH1012 driver and HR9040 Horn if I can figure out how to upload it here.
Thank you, very much.
"Ad Astra Per Alia Porci", - To the stars on the wings of a pig: John Steinbeck

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RE: Help With Small/Short Mid Horn for EVDH1012A

hottattoo

09:42:11 02/12/15

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RE: Help With Small/Short Mid Horn for EVDH1012A

Synthsayer

12:19:01 02/12/15

11

RE: Help With Small/Short Mid Horn for EVDH1012A

Synthsayer

18:02:47 02/12/15

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RE: Help With Small/Short Mid Horn for EVDH1012A

hottattoo

09:42:11 02/12/15

12

RE: Help With Small/Short Mid Horn for EVDH1012A

Synthsayer

12:19:01 02/12/15

11

RE: Help With Small/Short Mid Horn for EVDH1012A

Synthsayer

18:02:47 02/12/15

10

RE: Help With Small/Short Mid Horn for EVDH1012A

djk

18:34:04 02/12/15

RE: Help With Small/Short Mid Horn for EVDH1012A

hottattoo

18:22:26 02/12/15

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RE: Help With Small/Short Mid Horn for EVDH1012A

djk

23:57:41 02/12/15

7

Put that on top of these

Scholl

15:55:29 02/13/15

5

RE: Put that on top of these

djk

21:33:49 02/14/15

4

RE: Put that on top of these

Synthsayer

09:06:28 02/20/15

3

RE: Put that on top of these

Synthsayer

09:22:08 02/20/15

2

RE: Put that on top of these

djk

23:03:45 02/20/15

RE: Put that on top of these

Synthsayer

08:24:14 02/26/15

RE: Help With Small/Short Mid Horn for EVDH1012A

Synthsayer

01:03:15 02/13/15

RE: Help With Small/Short Mid Horn for EVDH1012A, posted on February 12, 2015 at 09:42:11
hottattoo Audiophile Posts: 141 Location: New York Joined: July 30, 2011	Give DIY Sound Group a look---They have a good selection of horns / wave guides. Also check out Daves Fastlane horns for a wood ( mdf )400hz elliptical horn offered both as a kit and a finished product. For midrange use I would stick to a tractrix profile. That is what I use and have no complaints. Just my opinion.

RE: Help With Small/Short Mid Horn for EVDH1012A, posted on February 12, 2015 at 12:19:01
Synthsayer Audiophile Posts: 113 Location: Lexington, KY Joined: December 20, 2009	THANK YOU!!! "Ad Astra Per Alia Porci", - To the stars on the wings of a pig: John Steinbeck

RE: Help With Small/Short Mid Horn for EVDH1012A, posted on February 12, 2015 at 18:02:47

Synthsayer
Audiophile

Posts: 113
Location: Lexington, KY
Joined: December 20, 2009

Those guys have really nice products.
Thanks again.
I would like to try just a very basic and easy to construct horn.
The DH1012 has a 1.3 opening which seems hard to find a horn for without using an adapter.
Wouldn't an adapter to 1 inch change the cuttoff frequency?
Thanks again.

"Ad Astra Per Alia Porci", - To the stars on the wings of a pig: John Steinbeck

RE: Help With Small/Short Mid Horn for EVDH1012A, posted on February 12, 2015 at 18:22:26

hottattoo
Audiophile

Posts: 141
Location: New York
Joined: July 30, 2011

To get the best performance out of any horn / driver combination you must have a seamless transition between the two. A good bet would be to get a horn with a 1.5" throat and make an adapter of proper size / taper to mate up with your exact driver exit. You could use plywood, mdf, delrin, aluminum et. and make it as perfect as possible as any imperfection in the throat can not corrected for. Good luck.

RE: Help With Small/Short Mid Horn for EVDH1012A, posted on February 12, 2015 at 18:34:04

djk
Manufacturer

Posts: 6135
Joined: June 17, 2000

A 10" deep horn will be smooth above about 680hz.

The EV HR90 sounds very good, and with the DH1012 may be crossed at 500hz(24dB/oct). It's overall depth is about 14", but the mounting depth is less than 8".

http://www.electrovoice.com/downloadfile.php?f=HR90%20EDS.pd

RE: Help With Small/Short Mid Horn for EVDH1012A, posted on February 12, 2015 at 23:57:41

djk
Manufacturer

Posts: 6135
Joined: June 17, 2000

The $59 elliptical Faital Pro LTH142 horn might do what he wants.

He would need an adaptor made from a 1/8" aluminum plate to make the bolt circles line up.

http://www.usspeaker.com/Faital%20Pro%20HF146-1.htm

RE: Help With Small/Short Mid Horn for EVDH1012A, posted on February 13, 2015 at 01:03:15
Synthsayer Audiophile Posts: 113 Location: Lexington, KY Joined: December 20, 2009	Thanks a million, DJK and everybody else! You guys are amazing. Happy Friday the 13th "Ad Astra Per Alia Porci", - To the stars on the wings of a pig: John Steinbeck

Put that on top of these, posted on February 13, 2015 at 15:55:29

Scholl
Distributor or Rep

Posts: 1358
Joined: March 8, 2001

Could be the combo!!

lookie here

RE: Put that on top of these, posted on February 14, 2015 at 21:33:49

djk
Manufacturer

Posts: 6135
Joined: June 17, 2000

If the mids cqan gio to 1Khz I would consider this Faital Pro horn.

RE: Put that on top of these, posted on February 20, 2015 at 09:06:28
Synthsayer Audiophile Posts: 113 Location: Lexington, KY Joined: December 20, 2009	Thank you, DJK!!! That graph looks great. If the bolt holes don't line up, maybe I can drill new ones instead of an adapter plate??? Thanks again for the help. "Ad Astra Per Alia Porci", - To the stars on the wings of a pig: John Steinbeck

RE: Put that on top of these, posted on February 20, 2015 at 09:22:08
Synthsayer Audiophile Posts: 113 Location: Lexington, KY Joined: December 20, 2009	Thanks again for the help!!! I ordered the Faital Tractrix horns today. Does anybody want the EV HR9040 horns I have? I'll sell super cheap if you pay shipping? They are so big, I don't know what to do with them. "Ad Astra Per Alia Porci", - To the stars on the wings of a pig: John Steinbeck

RE: Put that on top of these, posted on February 20, 2015 at 23:03:45

djk
Manufacturer

Posts: 6135
Joined: June 17, 2000

You need to order the LTH-142 horns to fit your EV drivers.

The Faital Pro has a 1.4" entry with a four-bolt four-inch bolt circle.

The Electro-Voice DH1012 is 36mm, 1.4" exit with a 3.5" bolt circle.

You might be able to re-drill the horn without making a plate.

If you mount it in a sealed box you may want to add an extra mounting screw to the bottom edge, right in the center, and the same on the center of the top edge.

http://soundyork.exblog.jp/m2010-10-01/

RE: Put that on top of these, posted on February 26, 2015 at 08:24:14

Synthsayer
Audiophile

Posts: 113
Location: Lexington, KY
Joined: December 20, 2009

Thanks again for all of your help DJK and others..
The new horns were delivered and they sound amazing.
It was necessary to drill new holes to adapt the EV DH1012A driver, which turned into somewhat of an adventure, but, other than that I could not be happier.
The FaiTal Horn has a metal mounting plate; I was expecting the horn to be all ABS plastic. This made drilling the holes for the driver a little more of a challenge but it all worked out okay.

Thanks again.
You guys are the best!!!

"Ad Astra Per Alia Porci", - To the stars on the wings of a pig: John Steinbeck

High Efficiency Speaker Asylum

Help With Small/Short Mid Horn for EVDH1012A

76.177.204.185