first Pic of my S2600 Horn

[Bernard Wolf]

[QUOTE=Earl K]Hi Bernard,

- Are you now stating that the 3100 has a dividing panel in it that actually divides the enclosure into two separate air-tight compartments ?

- Or are you stating that your given measurement is down to the "brace" that the 3100s' horn/driver/bracket mounts onto ?

<. Earl K

Hi Earl - no, I thought we had cleared that up before, but as per the enclosure diagrams posted in this thread the 3100 is as you say ''braced'" and is open and thus not a separate compartment as in the 2600. Thus my desire to dampen the horn. Thanks for helping to keep us on our toes The measurment is down to the brace/divider.

Bernard

[MatthiasA]

is A 397mm ? inside the cab ? in the horn section

greetings
Matthias Asselborn

[Bernard Wolf]

Matthias - obviously it is "A' as I have the 3200..... "B" would not help you at all.... don't blame you for double checking though ..... just remember though that I have no way of knowing if that is the same measurment as the S/2600.

Bernard

[MatthiasA]

ok :-)

thanks a lot !

[MatthiasA]

i will put in a solid plate ! i think its ok !
with the height of 1" 25,5mm

[Bernard Wolf]

i will put in a solid plate ! i think its ok !
with the height of 1" 25,5mm

The plate in the 3100 is 3/4" and plywood... believe it or not !

Bernard

[MatthiasA]

now its finished
ive all messures ! thanks a lot :-)
now i can do it for me in reality :-)
greetings Matthias Asselborn

[Earl K]

Nice Drawing MatthiasA

- What is the internal volume of the bottom compartment housing the ME120h ?

- Before moving on with your construction plans, I recommend that you run some "Tuning Simulations" using your newly acquired information .

regards <. Earl K

[MatthiasA]

how can i run simulations ?
ive nt a jbl speaker simulation program
ive only the SPEAKER PRO v.6 from Visaton
iam looking of the TSP from the ME120HS woofer
then i can simulate it ! with the crossover
but i can't calculate the angel side in the simulation with my program

[Earl K]

Hi

(A) Use these TS parameters;

Fs 30.99 Hz
Re 5.51 ohms
Qms 8.04
Qes 0.28
Qts 0.27
Le 1.12 mH
Vas 4.02 cu. ft.
Mms 2.99 oz
Cms 54.47 in/lb
Bl 18.10 tesla
SPLref 92.7 dB "

- these were provided to the forum by mrbluster .

<. Earl K

[MatthiasA]

i will calc the volume and simulate the bass
and i will check the whole spectrum with my selfmade
crossover !
i will post pics in about 2 hours !


greetings !

[MatthiasA]

the ground is 12,42 dm²
exactly 12,42153502 dm²
the indoor height is 468mm of woofer cabinet
the Volume is about 58 liters
exactly 58,13278391 liters

without any damping material

[MatthiasA]

(1) I think your horn location may be a little low. In looking at the posted pics for the S3100 & the S2600, the horn in the S2600 appears to be located a little higher towards the top of the box.


no its the right location !
from the left 10 cm from the right 19mm
and the horn self is 44cm

and this is 44+1,9+10 = 559 mm and this is the exact dimension from the orginal S2600

in the height
the horn is 38mm unter the top plate !
the top and the ground plate (stand plate) is 22mm !

the divider has a height of 397mm ?
this is the height from Bernhard !


- You need "Peterr" to give you a measurement that will more clearly locate the bottom of the horn.
- I would suggest either;
(i) from the bottom of the box ( not including stand ) up to the bottom of the horn .
(ii) or from the top of the box down to the bottom of the horn.


its about 38mm !


(2) I fear you have located the internal divider in the wrong position. It looks
too low to my eyes.


yes you are right but bernhard give me the messures .... of 397 mm

but my plate is 25mm 1"
and bernhards only 3/4"
but i think its too small ! (3/4")


Now, the 58 litres volume for the woofer compartment is workable but it's a bit smaller than what I was expecting.

I was expecting @ 73 litres .

why ??

- Also, If you look at the picture of the H2600 with the "bracket", it just doesn't look like it has enough height to reach down to where you have placed that divider .


well... but i can't messure the divider ?
bernhard told me the height



- Again, I wouldn't install that divider until you get more accurate measurements from Peterr.

.......


(i) You need the inside height dimensions of the compartment that houses the woofer . I'd be very wary about trying to accurately locate that divider from the top down. Why ? Your box and the JBL box may have different thicknesses of the top-plate -


hmm the orginal has 22 mm and my plate too !


especially if you doubled up the thickness of the wood ( which is the way your drawing looks ).

can you say me the exact thickness ??



greetings matthias

[MatthiasA]

i need exactly messures from peter !!!!
please peter can you say me is the divider bracket or solid ?
which height ??? :-)

greetings matthias

[MatthiasA]

i neet the MMD (membrane mass) from the ME120HS too
and the membrane surface SD