My DIY Horn setup

[PMA!]

Can't quire figure out what's going on w your subs. I thought they were slobs or maybe I missed a post.

Any info on your choice of cones for the 515's? Curious minds want to know.

You missed some text, these were the prototype that I initially planned to have built, but I got other thoughts along the way.

The 515s are the "Classic" series with Alnico magnet assembly. I don't think there are any choices of different cones?

 

[PMA!]

PMA!, I can't see any of your images. Why don't you try attaching them to your posts through diyaudio rather than linking from an external website?

Weird, I'll try to upload from now on.

 

[PMA!]

After a while i tried moving the stereo back to the other wall. This gave me a considerably flatter response and sounds way better.

A bit messy with a lot of cables, but no noise or hum anywhere.

 

[PMA!]

I was starting to sketch up the SLOBs.

 

[hottattoo]

Congrats !!! That is a beautiful and I am sure excellent sounding system !!!

 

[ra7]

Thanks. Nice work.

 

[PMA!]

As you can see in the previous picture, there is some room above the OBs in this position. I had ordered the woofers I needed for a solution with 6 drivers in each SLOB, but a fellow audio nerd commented on the extra height. I went back to the drawing board and made a sketch of the room and a higher SLOB to verify that I could actually make it work. And it fit!

The production drawings were sent to the cabinet maker and other vendors, and the wait had begun.

After a while, just before christmas, I recieved this picture via e-mail.

 

[Pano]

After a while i tried moving the stereo back to the other wall.

All those non-parallel surfaces have got to be a big help for the acoustics. How does it sound in there?

 

[PMA!]

The room sounds decent! I have some reflections from the rear wall, but that's about it really. The horn and OB system does not "activate" the room a great deal.

 

[Scott L]

Very, very nice

Mr PMA,

You have a beautiful system! 4-ways systems are the ticket to audio nirvana.
I especially like your mid-bass. Is there any way you could describe it, and the rest of the drivers/and/applications in more detail ?

Thanks in advance from another 4-way guy

Scott L.

 

[PMA!]

I'll get to it shortly

A few days after, I got the message that the paint had dried up and they were ready to be picked up.

I borrowed my fathers car and went off. They barely fit!

 

[PMA!]

My listening room is on the second floor. Geting them up the stairs was not a task for one person to say the least.

 

[PMA!]

The assembly started.

 

[JoshK]

Like Scott, I am very curious about your "J horns". How did you make/buy the front horn portion? I am very interested in something like this myself.

 

[JoshK]

Aha! I think this is it?
Horns

 

[ogie]

Those SLOB's look diabolical! Like an ordinance package ready to be attached to the undercarriage of a military jet. But instead of delivering mass destruction, it delivers mass enjoyment.

I hope those windows are hurricane rated.

 

[PMA!]

Josh, that's correct!

Thanks ogie. I have to agree! They sound like they look

 

[Gluca]

Hey PMA! terrific system! Those 8+8 woofers make me drooooooool so badly. Couple questions here:

How did you deal with time alignment? Is it your DSP taking care of it?
And what about the tweeter position? It looks like it is 'much' higher than your ears level which is said to be the ideal, I am wondering if you tried different solutions and at the end you picked up this arrangement and distances between mid bass - mid - tweeter.

keep the pics coming, we are loving them

 

[PMA!]

Hi! The tweeters are crossed over at 6k. In my opinion midrange height is much more important, and they are at ear height in this system.

Time alignement between the three drivers are almost aligned physically, but perfected via the DSP.

 

[schlager]

What kind of DSP are you using?