Baffle layout

[4313B]

In real life, this simply sounds better

[4313B]

than this

[boputnam]

With ports, thusly...?

[DavidF]

Thanks, Giskard, for the effort to post these items. No doubt it took a fair amount of time. This is the type of material I enjoy that once fed the home-builder types that we do not see anymore (save a few that linger around these parts, me included).

Bo, your position on the port may be better, as mentioned, to keep it away from the internal surfaces. These can alter the air motion around the port, or so I read. You will note that the L110 for instance tucks the port way down in the corner. No doubt this is more of a design compromise. Can’t get you to move the crossover to back side, huh?

David F

[Mr. Widget]

Now this modification would get rid of all that excess baffle and allow the speakers to image more like one of those &$#@% audiophile speakers.

[boputnam]

from DavidF
Can’t get you to move the crossover to back side, huh?

Well, the N65 network is on the rear, with the binding posts handily fit through an opening. But it's darn convenient to have the L-pad on the face. Plus, since it is a pristine L65 face-plate, it looks nice, too!

I take note of your concern on resonance, and need for bracing. But, this baffle is 3/4-in oak plywood, and much more stout than MDF. It feels very solid, but man, when all the transducers are mounted, that baffle weighs a tonne. The baffle will be secured to the 3/4-in lip remains of the original baffle with 8-32 machine screws and T-nuts, so things should be good.

Oh, btw, that suggestion of Sono Tube from Gordon W is tops. That stuff is very heavy duty, and makes an excellent mid-range subenclosure. After all is dried and such in the next week, I'll post some pics to "feed the home builder types - which is all of us, at least in spirit!

[4313B]

"Thanks, Giskard, for the effort to post these items."

My pleasure. I hope everyone enjoys the postings.

"You will note that the L110 for instance tucks the port way down in the corner. No doubt this is more of a design compromise."

True. Like the L96 and 4313, the port/duct is bent 45 degrees and points up into the interior of the enclosure. I think that very same port is also used in the 4311 and 4312.

"Now this modification would get rid of all that excess baffle and allow the speakers to image more like one of those &$#@% audiophile speakers."

I was just trying to illustrate the point of mounting off-axis. The original L212 was very symmetrical. I didn't really want to change the actual physical dimensions of the L212 enclosure for the illustration.

"Oh, btw, that suggestion of Sono Tube from Gordon W is tops. That stuff is very heavy duty, and makes an excellent mid-range subenclosure."

Yes, I use them to make 112, 2108, 2122 and 2202 subenclosures. There are two places here in town that sell them. One will cut them up to any length I want and the other won't. You can probably guess which place I go to

[Mr. Widget]

Originally posted by Giskard
"Thanks, Giskard, for the effort to post these items."

My pleasure. I hope everyone enjoys the postings.

"Now this modification would get rid of all that excess baffle and allow the speakers to image more like one of those &$#@% audiophile speakers."

I was just trying to illustrate the point of mounting off-axis. The original L212 was very symmetrical. I didn't really want to change the actual physical dimensions of the L212 enclosure for the illustration.

Yes thank you very much. You have posted hours of fun reading on the site. Quite a Labor Day!

On the L212, I was poking at JBL and having a little fun drawing on your post.

[Robh3606]

Hey Mr. Widget

You making fun of my XPL's

[Mr. Widget]

Striking resemblance! How do they sound?

[Robh3606]

They sound great! Really like that TI mid and they do image well. Would love to hear the real thing! I saw your sketch and well LOL I couldn't resist .

Rob

[boputnam]

OK, Rob...

Now, give us the assemblage, piece-by-piece. We want to know all.

1. Transducers, by relative position and offset.

2. Then, go over the networks - active and passive

3. Then, the amps/EQ's, pre's...[/list=4]

Come on!

[Mr. Widget]

Dang Bo, do you want his inseam too!

[Alex Lancaster]

When using a comp driver in reverse, as pictured, what do You do with the horn exit?, make a plate to cover it, or add more volume?

Do You reverse the polarity?

Thanks.

[boputnam]

Widget...

I'm guessing it's all here: Describe your HiFi System - Link but I was hoping for a but more detail to accompany the Zoomed view...



and, Alex...

Those are great questions!!