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Guido
11-04-2003, 03:42 AM
Hello 4430 Owners!

For a 4430 DIY Project I need some measurements. It would be very kind if some of you could help.

a)Thickness of Horn Baffle
b)Distances from Horn to Baffle edges (location of Horn)
c)outer dimension Horn Baffle
d) Diameter and length of Reflex Ports
e)location of Bass
f)Dimesion of Pedestal, distance from outer cabinet

Thanks a lot in advance!

Audiobeer
11-05-2003, 01:04 PM
I tried to respond to you and Giskard, His mail box is full. I think JBLDOG still has his apart waiting for the recones. JBLDOG don't you loved being volunteered! :bomb:

Guido
11-05-2003, 01:28 PM
:( :(
Come on friends!

Not one that can help me?

Mr. Widget
11-05-2003, 01:34 PM
Well, if Bo had a pair I am sure a pile of photos and measurements would be appearing on this thread.:)

JBL Dog
11-05-2003, 06:47 PM
(for those old enough to remember "Mighty Mouse")

Actually, just got the recones back and installed yesterday. But, I'm a team player, always here to assist!

:D

Let me rip into one of those bad-boys apart and I'll be back with the results.

Headin' to the "Dog-house"......

:scoot:

This message comes from JBL Dog :band:

JBL Dog
11-05-2003, 06:52 PM
Gonna have to wait!

My tool box is at a piece of rental property I own. The 2344's are mounted with screws that have "allen" heads (is this normal?).

No allen-wrenches in the "dog-house"!!

This message comes from JBL Dog :band:

boputnam
11-05-2003, 07:14 PM
Originally posted by JBL Dog
No allen-wrenches in the "dog-house"!! If they ain't too tight, in a pinch, a Phillips head will suffice...

And, thanks, Mr. Widget, I surely would! Earlier today I thought of buying a pair just to do the vivisection... ;)

Guido
11-06-2003, 03:43 AM
Originally posted by JBL Dog
(for those old enough to remember "Mighty Mouse")

Actually, just got the recones back and installed yesterday. But, I'm a team player, always here to assist!

:D

Let me rip into one of those bad-boys apart and I'll be back with the results.

Headin' to the "Dog-house"......

:scoot:

This message comes from JBL Dog :band:

Thanks for offering your help! Don't hurry;)
And don't rip them apart. Could be expensive :slink:

Ralf
11-15-2003, 04:15 AM
......

Midnight
11-15-2003, 06:13 AM
Originally posted by Guido
Hello 4430 Owners!

For a 4430 DIY Project I need some measurements. It would be very kind if some of you could help.

a)Thickness of Horn Baffle
b)Distances from Horn to Baffle edges (location of Horn)
c)outer dimension Horn Baffle
d) Diameter and length of Reflex Ports
e)location of Bass
f)Dimesion of Pedestal, distance from outer cabinet

Thanks a lot in advance!

I have a pair of 4435 apart right now. There are a lot of simular
things between them. I would be glad to help if I could.
Let me know:D

Guido
11-15-2003, 11:58 AM
Hi Midnight!

You can help with:

a)Thickness of Horn Baffle
f)Dimesion of Pedestal, distance from outer cabinet

Thanks!

Guido
11-15-2003, 12:01 PM
JBL Dog,

can't you find the tool box? :duck:

:help:

4313B
11-15-2003, 12:23 PM
Hello Midnight,

What are the actual internal and external dimensions of the 4435?

I'll post the drawings of the 4430 L-Pad baffle and horn baffle in the next day or so once I get them re-drawn. I will be taking my 4430's apart and will need to get the stock measurements drawn up before I trash the enclosures. I wouldn't mind drawing up the 4435's at the same time.

Midnight
11-15-2003, 12:44 PM
Ok
The horn baffle thickness is 1" same as the l pad baffle.
I want to make sure we get this right.
The baffle is the piece of wood that is screw on to the box itself
between the horn and the boxe.
Pedastal is 1 1/2 x 1 1/2 (actual size) piece of wood and is mounted 3/4" away from the front of cabinet to the edge of the
pedastal. The mesurement off the sides is 1".

The 4435 are
Outside 38" wide
34" h
and 16" deep.
Inside cabinets
Horn side is
32 1/2 h
17 3/4 w
14 1/2 d

lpad side is the same
I hope this helps
Denis

:) :)

4313B
11-15-2003, 01:27 PM
So basically 4.84 cubic feet internal volume per 2234H each with a single 4.125" port x 5" duct right? So calculated Fb would be roughly 30 Hz rather than the 26 Hz as specified in the product sheet. It would be nice to actually measure them.

I'd sure like to know the DCR on the 18.0 mH (61540) and 2.6 mH (61005) coils.

Midnight
11-15-2003, 01:32 PM
Originally posted by Giskard
So basically 4.84 cubic feet internal volume per 2234H each with a single 4.125" port x 5" duct right?

I'd sure like to know the DCR on the 18.0 mH (61540) and 2.6 mH (61005) coils.

thats right

Midnight
11-15-2003, 01:34 PM
Originally posted by Giskard
So basically 4.84 cubic feet internal volume per 2234H each with a single 4.125" port x 5" duct right? So calculated Fb would be 30 Hz rather than 26 Hz as specified. It would be nice to actually measure them.

I'd sure like to know the DCR on the 18.0 mH (61540) and 2.6 mH (61005) coils.
Oh yes
On the horn side, they fill the upper part of the chamber with insulation, From the horn braket up.

Ralf
11-15-2003, 02:31 PM
Originally posted by Giskard
Hello Midnight,

I will be taking my 4430's apart and will need to get the stock measurements drawn up before I trash the enclosures.


You trash your 4430? In what condition?

Mr. Widget
11-15-2003, 05:21 PM
Maybe this is a silly question, but why not order the L-pad board (61262) and horn board (61380) from JBL. They are priced at $6.95 and $15.85 ea. When you add up the time to drill, finish, and paint them, it would be hard to make them for those prices. Even including shipping to Europe.

see page 2.

http://www.jblproservice.com/pdf/Studio%20Monitor%20Series/4430LR.pdf

see page 11.

http://www.jblproservice.com/pdf/Misc.%20Parts%20List/03MISCPPL.pdf

4313B
11-15-2003, 06:45 PM
Because they are NLA and have been for years. JBL isn't real good at cleaning up their miscellaneous parts lists. Never have been.

Mr. Widget
11-15-2003, 06:54 PM
That is typical JBL I guess. They claim that list was revised July 15th, 2003.
They also have a pretty screwy way of organizing it.

Ralf
11-16-2003, 04:58 AM
Originally posted by Mr. Widget
Maybe this is a silly question, but why not order the L-pad board (61262) and horn board (61380) from JBL. They are priced at $6.95 and $15.85 ea. When you add up the time to drill, finish, and paint them, it would be hard to make them for those prices. Even including shipping to Europe.

[/url]

Can anybody check out, if the both boards are available in USA? In Germany no parts for the 4430 are in stock.

4313B
11-16-2003, 05:14 AM
They are gone and have been gone for years. I think the boards themselves sold out in the mid 90's. The only parts left are the foilcals.

"These are the only parts still available.

61394 Foilcal 4430 (painted) $18.93, in stock

61946 Foilcal 4430 $31.68, in stock"

Ralf
11-16-2003, 06:45 AM
Originally posted by Giskard
They are gone and have been gone for years. I think the boards themselves sold out in the mid 90's. The only parts left are the foilcals.

"These are the only parts still available.

61394 Foilcal 4430 (painted) $18.93, in stock

61946 Foilcal 4430 $31.68, in stock"


Thank you Giskard,

Guido has already ordered the 61946 for me, last week.

What is with your 4430? Before you kick them, you could screw out the boards...

Midnight
11-16-2003, 06:48 AM
The boards would be easy to make. You just need to find the right rotor bit for the outside edge.

Ralf
11-16-2003, 07:03 AM
Originally posted by Midnight
The boards would be easy to make. You just need to find the right rotor bit for the outside edge.

That would be no problem. A good friend of me has a carpenter's workshop and so he owns all nessesary machines. (All Boxes we had build the last time were developed there...)

The only thing is, I don`t know the right angle for the slant and Im a friend of originaly...

Midnight
11-16-2003, 07:14 AM
I have to get some grilles made out. I think that they should have the same angles. I will take one of the pads to a carpenter to mach the angles.
I will let you know what he needed to do the get the right angles.

4313B
12-02-2003, 10:28 AM
Guido, Ralf,

The dimensions for the 4430 box are:

34" high x 21-7/8" wide x 14-11/16" deep

All panels are 3/4"

The L-Pad board, 2234 board, and grille are 1" thick.

Here is a drawing of the L-Pad board

Ralf
12-02-2003, 11:55 AM
Originally posted by Giskard
Guido, Ralf,

The dimensions for the 4430 box are:

34" high x 21-7/8" wide x 14-11/16" deep

All panels are 3/4"

The L-Pad board, 2234 board, and grille are 1" thick.

Here is a drawing of the L-Pad board

Hi Giskard,

that`s a good beginning.

I have two questions:

Is there a distance between the L-Pad board and the Horn board?

On the side view of the Board is a small step with the measure of 1/8". Is these step flush fitted?

Thanks Giskard
:thmbsup:

4313B
12-02-2003, 05:21 PM
Originally posted by Ralf
Is there a distance between the L-Pad board and the Horn board?Yes, I'll post a drawing of the Horn board in the next day or two.
Originally posted by Ralf
On the side view of the Board is a small step with the measure of 1/8". Is these step flush fitted?The step is visible from the side, the Horn and L-Pad boards are a full 1" out from the baffle, hence the depth of the enclosure measured from the Horn board would be 14-11/16" + 1" = 15-11/16". You may notice that JBL has the depth as 15-3/4" in their literature so you might as well stick with that. What's a 16th of an inch :p They have the horn extending out from the baffle as 3-3/16", mine measures 3-1/4", so there's a 16th in the other direction ;)

4313B
12-03-2003, 09:33 AM
Here is the Horn Board.

The gap between the Horn Board and the L-Pad board is roughly 21-7/8" minus 15-3/8" minus 6-5/16" = 3/16"

The grille measures 21-7/8" wide x 20-3/4" high (including cloth thickness on the edges) and there is a gap between the top of the grille and the bottom of the Horn/L-Pad boards similar to the gap between the Horn and L-Pad boards. 1/8" to 3/16". It would appear the tolerances are 1/16" as opposed to 1/32" but that might not be true.

The tuning is accomplished using two 4-1/8" ID ports each having an 8-1/4" duct.

It should be noted that this tuning has been termed as being "aggressive" for Home Hi-Fi use by several JBL engineers.
Their recommendation has been to tune down into the 28 Hz to 30 Hz range.

boputnam
12-03-2003, 09:49 AM
:thmbsup:

Phenomenal autocad job, dude.

4313B
12-03-2003, 09:51 AM
Thanks!
I rushed through it but hopefully it will get the point across :)

jtgyn
12-05-2003, 06:48 PM
G'Day Giskard,
Thanks very much for the drawings.. just what I needed.

May I ask you to do one more bit of research before you move on from your 4430's... could you post the resistance of the inductors please?

L102 2.6mH
L2 1.6mH
L1 0.04mH

Regards Scott