Yet another 4425 project on the board

[bigyank]

Pics available soon. My question is I picked up a pair of used 2380A's for a song. Only issue is one is about a 1/16" of an inch larger (H-and-W).

Have a pair of newly foamed 2214H's from Gordon as well.

My question is when did these horns sizing change and why? I have contacted my source to see if he has any of each size left so I can have an equal sized pair.

Yank

[bigyank]

So, I have decided to build my version of the 4425. The only thing the original and mine have in common is the fact that we both use the 2214H (which I got from GordonW).

Here is the folder which will document the project:

http://s165.photobucket.com/albums/u...tor%20Project/

The HF drivers and horns I got via that infamous auction site. They are the 2446H with 2380A horns. I did not realize when I decided to go this route for the HF how big these were actually going to be. I have to decide now whether or not to free stand the HF outside the box or not. I am leaning towards baltic birch for this project since my last speaker project (2007) used double refined 1" MDF and man that stuff was like working with concrete and just as heavy. I want to ultimately match the tuner case in my avatar which is black walnut veneer. Grill cloth will be from Zilch (I have ordered this cloth from him in the past and love the color).

Most likely will install 100 watt l-pads (any recommendations in this area are greatly appreciated).

I will be working on this with another member of this fine forum (Duaneage) who is not only a friend of mine but my mentor in these endeavours!

More pics soon as I have been busy with work which requires I travel during the week!

Any thoughts
Yank

[subwoof]

the 238X flat fronts have at least 3 generations:

The first ( 2380 ) was the resin foam casted thick walled shiny type. They had a habit of shattering on the road.

The second version has a very thin walled neck and was made out of the current type injection molded plastic resin?? Check the website for tech spec on the stuff ) BUT the neck was so thin, and the driver at the time 2445 ( 32lb of pure cantilevered weight ) snapped them off even with the ample bracing. Even in a friggin hanging CLUSTER.

The third version added ribs near the driver mounting flange that did help but 32lbs is 32lbs and drop drop means break break.

I think the most current version is a little modified but I ( and nobody I know ) uses 2" stuff anymore so it's conjecture.

The 2381 ( 1.5" as used in the 4726A and others ) are fiberglas as are the newer PT series. Nice weight and real strong.

Of course they have to be since the new drivers weigh a whopping 3lbs ( yep - THREE )....

And over the years I was building SR cabinets minor variations in hole locations and overall dimensions with these horns drove me nuts in the woodshop. I have one of every horn for template ( reglued road warriors ) and batch to batch ( or versions to version ) was not consistant.

sub

[bigyank]

And over the years I was building SR cabinets minor variations in hole locations and overall dimensions with these horns drove me nuts in the woodshop. I have one of every horn for template ( reglued road warriors ) and batch to batch ( or versions to version ) was not consistant.sub

I had to get 3 of these off the 'bay to get 2 the same diameters!

Interestingly these 2 had almost sequential serial numbers (off by 6) and the 3rd one was way up there and is 1/16" larger HxW.

Was thinking that I might look for a pair of 2509 mounting brackets and mount these outside a cabinet, ala 4670D.

Yank

[duaneage]

The wood shop is going to be open for this and other projects this month. We will be doing two systems with 2214H woofers, I have plans to make a 3 way Studio Monitor version of the L100T in the form of the 4312 series.

[bigyank]

I think the most current version is a little modified but I ( and nobody I know ) uses 2" stuff anymore so it's conjecture.

Hey, count me in! I am getting ready to use 2" drivers and have decided, once I (with Duaneage's help) swept the 2446's that some additional UHF help was going to be required:

I just purchased a pair of 2404H's off of the bay and once those get here, Duaneage and I are going to get working on a crossover design.

yank

[bigyank]

Virtual Crossover Box. Another neat trick Duaneage brings to the table. We used this for another DIY project we did last year (made the mistake of starting a project at the end of January during a cold spell ).

Duaneage can elaborate more on the working of this box but being able to simulate values and actually listening to the driver is really nice!

Yank

[hjames]

Virtual Crossover Box. Another neat trick Duaneage brings to the table. We used this for another DIY project we did last year (made the mistake of starting a project at the end of January during a cold spell ).

Duaneage can elaborate more on the working of this box but being able to simulate values and actually listening to the driver is really nice!

Yank

Whoa - looks like a very cool designing tool!

http://www.purebits.com/virtcross.html