My DIY Horn setup

[PMA!]

Hi!

Thought I'd share my setup. The speakers are driven with the DIY FW F5 amps I built with a lot of help from this forum earlier, along with an Accuphase A-45 and Icepower for bass duty.
The system has an active crossover, so there are few\no components in the path. Tweeter and midrange is ALE compression drivers, the midbass is GPA 515C. Bass drivers are also GPA 515C in a SLOB configuration with a high compression.

 

[Clashing]

Last I heard, Kevin Brooks in Utah was the only in the States with ALE drivers, and I thought he went out of business. Oh and we want more pics and maybe even some measurements! Nice system BTW!

 

[PMA!]

Last I heard, I was living in Norway

 

[Clashing]

I wouldn't know

 

[Scott L]

SLOB

Greetings,

Do you have one, or a stereo pair of SLOB's ?

p.s. I can see you are in Europe (Norway) because of the electrical outlets near the floor/baseboard.

 

[djn]

Very nice work. Can you post many more pictures?

 

[PMA!]

Hi! Thanks for the good feedback. I have a stereo set of the slobs as well, so there is a total of 16 woofers.

I will make sure to post more pics and details soon

 

[PMA!]

Hi! Been a while.

Here are some more pics of the building process:

I tried and made a lot of 3D-models of different kinds of holders for the mid and tweeters to fit on top of the J-horn. I ended up with this solution made out of 30mm aluminum, as simple as possible, form-follows-function kind of deal. Easy to produce with as few parts as possible:

A render of the complete 3D assembly started really looking good in my opinion. I had used a lot of time without really being satisfied. This came together in a good fashion I think:

First the parts were cut with a waterjet. I cut all parts with 3mm excess material, since the waterjet cut is a bit rough and does not go through the material perfectly perpendicular. The plan was to CNC these parts to a perfect fit later on.

 

[ErnieM]

Wish I had the resources....nice work!

 

[PMA!]

Thanks Ernie. Working with product development and engineering of machinery via 3D tools definitively helped the process, not to mention the network of vendors.

 

[PMA!]

Parts fresh out of the CNC mill, a testassembly of the parts to check the fit. Everything was perfect.

 

[PMA!]

Here with the Horn, JMLC 350 by Autotech.

 

[PMA!]

The day after dispatch I received the rear chambers for the J-horn at work. Heavy stuff!

 

[POOH]

Looking great! ... and expensive

 

[PMA!]

It's not the cheapest system in the world, but I have spent very little on "bling" on this system? It's also my first DIY build

Chaos in the living room!

 

[PMA!]

Rear chamber, rear wall and stainless steel plate for terminals.

 

[PMA!]

Sealed properly!

 

[PMA!]

I got the man who built the rear chambers to cnc a drilling template for the J-horn that made the job much easier.

I made room for some foam tape, and also made some small taps that were a tad oversize. They were sanded down to a perfect fit in the horn.
Here placed ans bolted on the horn.

 

[ogie]

It's also my first DIY build

Not bad for a beginner. Seriously, well done and thanks for sharing.

Little confused about referring to the midbass as a "J Horn". .. which to me implies a horn in the shape of a "J". Or am I just not informed in the art of "horn speak"?

 

[PMA!]

To make sure the holes did not go through the mounting plate I used drill stoppers. After the holes where finished, the RAMPA nuts went in.

Will it fit? Yes, perfectly!
Love the look of the alnico magnet.