Z19

[Zilch]

5 cuft 4505WX inverted with 2235H installed. Both ports open, it measures 33.3 Hz tuning. One port closed, it's 23 Hz, an alignment requiring active HP EQ.

2452H-SL 4" Aquaplas-damped titanium diaphragm "Next Generation" 1.5" exit compression driver.

2352 "Optimized Aperture" horn with flange modified for small bolt circle; also accepts 243x drivers.

2509A horn/driver mounting bracket similarly modified.

Fully biased custom crossover, 1 kHz (bottom).

Woofer recessed 3.5" improves time-alignment over previous 4507 iterations.

It's your standard C50SM, 4320/25 et.al. box, better braced than similar consumer L200, with 11-ply construction.

Pumpin' dZihan & Kamien Gran Riserva just now.

[Think I'll paint that dot JBL red.... ]

[Gary L]

Very nice Zilch!

Now we want to see you put that all into a living room friendly cabinet that the wife can accept!

Gary

[Zilch]

Shabby chic.


Paragon's in the living room; looks good, sounds really crappy.


[There's tradeoffs in all matters audio.... . ]

[Robh3606]

Watch that Z reference

LZ-19

Tactical*:
Z I (third ship to bear this designation)
Usage:
military
First Flight:
6 June 1913
LZ-19 was damaged beyond repair in a thunderstorm on 13 April 1914 and subsequently scrapped.

You never know who used it before you

Rob

[Gary L]

OK Zilch, No doubt in my mind you would be the guy with the ratty looking Vega with the 427 under the hood and dial in to perfection.
Your attitude would be "don't worry about what it looks like because you won't see it for long"!

Just for the record, I was never fond of how the Paragon looks or sounds.
Do wish I had a few but not because I ever liked them.

Just a couple weeks with my lovely wife and you will either get with the program or starve

Gary

[Mr. Widget]

OK Zilch, No doubt in my mind you would be the guy with the ratty looking Vega with the 427 under the hood and dial in to perfection.

The Zilchmobile is actually a very ratty looking Porsche... it may have been dialed in at one time, but these days, I am amazed every time I see that it made it across the Bay Bridge.

Just for the record, I was never fond of how the Paragon looks or...

You my friend are a seriously ill individual.


Widget

[John W]

Here you go, just add a few curves.

[johnaec]

The Zilchmobile is actually a very ratty looking Porsche... it may have been dialed in at one time, but these days, I am amazed every time I see that it made it across the Bay Bridge.

'Ya' mean that thing moves?? I've only seen it sitting in the driveway...

John

[Zilch]

Anyone with a pair of these big ol' boxes around would do well to try inverting them like this as a LF platform for whatever MF/HF they want to use on top.

Using 2235H, it's basically 4430 bass, but with the driver up off the floor and close to the horn. No changes to the box are required other than to block off the original MF/HF openings.

Up on these dollies, the top is 35.5" from the floor, 3" shorter than L200, and 1" shorter than 4507 on the same wheels....

[4313B]

No changes to the box are required

My wife begs to differ...

Shabby chic.

That just might fly in the Middle East.

[Zilch]

That just might fly in the Middle East.

'Ya' mean that thing moves?? I've only seen it sitting in the driveway...

That's so's you don't see the drippings....

The Zilchmobile is actually a very ratty looking Porsche... it may have been dialed in at one time, but these days, I am amazed every time I see that it made it across the Bay Bridge.

Anything that had hauled the Zilchster's ass around for 37 years would be ratty as a matter of course....

[Thom]

Looks great but I must have missed where you say how it sounds. I expect pretty good I just didn't see where you said so. Or are you a step away from playing music still?

Hopefully not as fragile as a 427 vega. Every time a rear wheel comes off the ground under power, if you're still in it when it comes back down, something breaks.

[Gary L]

Giskard, You had me rolling on the floor and laughing my ass off.
"Might work in the Middle East".

So Zilch, consider yourself warned! It might sound great and work wonderfully but not here in "Middle America".

You can either get your stuff together to within acceptable norms or bail out.
Some of us have different beats we have to conform to and yours just won't get it!

Nice try buddy!

Next time the least you could do is put a standard size tire under them like at least a 13" er.

Gary

[Zilch]

Looks great but I must have missed where you say how it sounds. I expect pretty good I just didn't see where you said so. Or are you a step away from playing music still?

The LF is a no-brainer, of course -- 2235H in a solid 5 cuft, end of story. I'm thinking about how to easily extend the ports to get down a bit closer to 30 Hz, is all. It'll just take another inch or so to get there.

I've got the HF dialed in fairly well, I believe; good enough for music, in any case. Mr. Widget's gonna drop by later this week for a brief listen. 2352 is the best sounding horn I have here, other than my brief recent experience with borrowing an H9800.

The 2452H-SL drivers have maybe a bit too much "air" presently, but Speakerdave suggests that the 4" Aquaplas'd SL diaphragms get mellower with use. They're playing continuously here to accelerate the break in. Once that's complete, I'll try moving the crossover point down to 800 Hz and roll off the UHF somewhat sooner.

Blue's the LF nearfield, red's the full range windowed, and cyan's full range with all the room stuff:

[Zilch]

Design precedents:

[I should get out from behind the screen more, maybe.... ]