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Woody Banks
05-02-2010, 11:27 AM
Here is my latest attempt @ a wooden horn. I wasn't happy with the size of the Yuichi A290 I built last year, so I scaled things down to fit the 1.5" driver. The finished dimensions are 17.5"x5.8"x9.75". These should be much easier to incorporate into a cabinet design than it's big brother.
I found a source of Tiger Wood 4"x4" material that machines well and is easy on the pocketbook. I used Ipe for the fins because of the contrasting color. Now, if they test out alright I can make use of my 2435HPL drivers.

eso
05-02-2010, 01:13 PM
Nice. What did you use for finish on those?

eso

dkalsi
05-02-2010, 03:13 PM
Sweeeeeeeeeeeeet!!!!! :applaud:

Woody Banks
05-02-2010, 03:56 PM
Nice. What did you use for finish on those?

eso

I like using a water based polyurethane. Hardly any smell and easy cleanup.

kartsmart
05-02-2010, 04:38 PM
Here is my latest attempt @ a wooden horn. I wasn't happy with the size of the Yuichi A290 I built last year, so I scaled things down to fit the 1.5" driver. The finished dimensions are 17.5"x5.8"x9.75". These should be much easier to incorporate into a cabinet design than it's big brother.
I found a source of Tiger Wood 4"x4" material that machines well and is easy on the pocketbook. I used Ipe for the fins because of the contrasting color. Now, if they test out alright I can make use of my 2435HPL drivers.

Just was going to sell off my 2435HPL drivers and go to the 2441s, but if this works out it could save me a boat load of $$$ please keep us posted :bouncy: great stuff

Derry
05-02-2010, 05:55 PM
very nice work, did you model them off another horn type,,??

Madisound has some Fostex horns: http://www.madisound.com/catalog/product_info.php?cPath=45_229_293&products_id=292

sure a nice price on them,,

lets us know how they sound,,

Derry

Woody Banks
05-03-2010, 08:54 AM
very nice work, did you model them off another horn type,,??

Madisound has some Fostex horns: http://www.madisound.com/catalog/product_info.php?cPath=45_229_293&products_id=292

sure a nice price on them,,

lets us know how they sound,,

Derry

Hello Derry

These are 3/4 scale version of an 2" exponential horn designed by Yuichi Arai. I redrew the plans in AutoCad , did a 75% scale reduction and used the printed drawings as patterns.

Woody

Earl K
05-03-2010, 08:59 AM
Here is my latest attempt @ a wooden horn. I wasn't happy with the size of the Yuichi A290 I built last year, so I scaled things down to fit the 1.5" driver. The finished dimensions are 17.5"x5.8"x9.75".


Hello Derry

These are 3/4 scale version of an 2" exponential horn designed by Yuichi Arai. I redrew the plans in AutoCad , did a 75% scale reduction and used the printed drawings as patterns.

Woody

Very Nice Woody !

BTW, Did you post the correct dimensions above ? or did you mean to write 8.5" ? ( I'm assuming that is height ) .

<> cheers

kartsmart
05-03-2010, 09:31 AM
When is Widget going to test them:applaud:

eso
05-03-2010, 10:44 AM
Very Nice Woody !

BTW, Did you post the correct dimensions above ? or did you mean to write 8.5" ? ( I'm assuming that is height ) .

<> cheers

I can't speak for Woody, buy having built Yuichi 290s 5.8"H sounds about right for a 3/4 scale.

eso

Woody Banks
05-03-2010, 01:51 PM
Very Nice Woody !

BTW, Did you post the correct dimensions above ? or did you mean to write 8.5" ? ( I'm assuming that is height ) .

<> cheers

Thanks!
The horns are 5 7/8" tall.

Earl K
05-03-2010, 02:07 PM
Thanks!
The horns are 5 7/8" tall.


Thanks for the clarification there Woody ! ( even if I was proven to be out to lunch :eek: )

<> cheers

spkrman57
05-13-2010, 09:48 AM
Wooden horns are a beautiful way to enjoy music with.

And I think they sound better than metal or plastic/figerglass.

Ron

Earl K
10-11-2010, 06:53 AM
http://www.audioheritage.org/vbulletin/attachment.php?attachmentid=45467&stc=1&d=1272824563


Now, if they test out alright I can make use of my 2435HPL drivers.

How did this work out for you Woody ?

Did you ever capture the FR for this horn/driver combo ? ( Admittedly, I forget what your testing capacities actually are )

<> cheers

Woody Banks
10-11-2010, 09:20 AM
Did you ever capture the FR for this horn/driver combo ? ( Admitted-ably, I forget what your testing capacities actually are )

<> cheers

I have no testing experience except for listening. I was going to have a friend test a couple of my horns but he is heading to Asia on business. Maybe when he returns.
My strongpoint is woodworking and he is an electronic wizard. Like Dirty Harry said " A guy needs to know his limitations" :D

Dr.db
02-25-2018, 12:32 PM
Great woodwork, as always ;)

These horns got my interest, especially using them with 2451 drivers. I know you havn´t got any measurement equipment, but has anyone else measured them by now?
Have you just build a pair for yourself or have other forum-members had the chance to enjoy these beauties as well?

dkalsi
02-26-2018, 11:37 AM
Great woodwork, as always ;)

These horns got my interest, especially using them with 2451 drivers. I know you havn´t got any measurement equipment, but has anyone else measured them by now?
Have you just build a pair for yourself or have other forum-members had the chance to enjoy these beauties as well?


I used to own a larger version of these horns (2" throat). I wish I took measurements at the time. They were used with JBL 2441 w/ Be diaphragms. I also owned a pair of Westlake-like smith horns. To me, I enjoyed the smith-horns more.

Woody's workmanship was second to none. These are not easy horns to build (though I've see your project thread and you certainly possess the skills). If I had the talent to be able to build something like this, I think I would go with the Smith Horns route (again - that is just based on my non-audiophile experience).

Woody Banks
03-01-2018, 04:03 PM
Thanks for the complements.
I regretted selling my smaller horns and have decided to build another pair using either teak or Indonesian walnut that I have just purchased. My latest plan is to do an array system with the vertical horn using the 2450SL drivers. I may decide to build a jig system like I have for the A-290's instead of the brute force belt sander technique.:)

macaroonie
03-01-2018, 05:01 PM
Lovely work Woody , I'd be interested to see some pics of your jig set up. :)

cheers M

dkalsi
03-02-2018, 11:17 AM
Lovely work Woody , I'd be interested to see some pics of your jig set up. :)

cheers M

ditto

Dr.db
03-02-2018, 03:09 PM
Looking forwards to see actual pics of your build :)

Woody Banks
03-03-2018, 08:48 AM
ditto
Here is the jig system i used for some of my later A-290's.

Dr.db
03-03-2018, 01:06 PM
Very nice, you´re one skilled woodworker :)

ivica
03-03-2018, 11:05 PM
Here is the jig system i used for some of my later A-290's.

Hi Woody,

very nice solution

ivica

Earl K
03-04-2018, 04:07 PM
Hi Woody,

It's my opinion that if you're going to orient the horn vertically one doesn't need the Yuichi fins installed.

OTOH, I do feel ( based on JBL's own designs ) that one should constrict/restrict the initial throat section ( as is seen in this cross-section of the H9800 ).

http://www.audioheritage.org/vbulletin/attachment.php?attachmentid=35987&stc=1&d=1229501821
While the width ( of the restricted throat isn't shown ) , it looks to be @ 1".

The salient feature here is to include some form of restriction within this area .

:)

Thought I should say something.

1audiohack
03-04-2018, 05:34 PM
The 1400 Array horn goes from 1.500” down to 0.850”.

I agree, no fins. Let the HF narrow in the vertical.

Barry.

Earl K
03-04-2018, 05:49 PM
The 1400 Array horn goes from 1.500” down to 0.850”.

I agree, no fins. Let the HF narrow in the vertical.

Barry.

Thanks Barry! for those numbers.

Woody,
Here's a polar ( of the H9800 courtesy of POS ) showing why this sort of horn turned sideways has such strong imaging capabilities .
- ignore the mis-labeled name in the pics bottom left corner

80360


Here's another ( showing one reason why the MTM "Special-Project" was ham-strung from inception > IMHO ).

80361

:)

Sootshe
03-04-2018, 06:05 PM
Beautiful work.

pentictonklaus
03-07-2018, 11:26 AM
Hi Woody,

Please put me on the list of people You might sell Smith or Tad style horns to.

Guess that would make a repeat offender. Just got semi retired and finally have time again
to enjoy the JBL Hobby.

Thanks to John W for his creation as well.

Klaus

cooky1257
03-07-2018, 11:59 AM
Cross section of the H9800 horn throat....

https://farm5.staticflickr.com/4798/26806555598_2d3df5d0d7_z.jpg

Woody Banks
03-10-2018, 09:51 AM
Thanks a bunch Earl, Barry, and Cooky for the heads up advice and details on the throat design for the array horn. I believe that I will focus my woodworking efforts instead on the design I have used in the past. :thmbsup: