Jbl 4410

[Hyldal]

I hear this old speaker lately, and there were some things in the bas that impressed me and I feel is difficult to find in modern speakers. The bas range was very transparent.

Does anybody have the TS-parameters on the woofer?
Does anybody know the type number on the woofer?

 

[EspenE]

It's a JBL127H-1 12" unit.

T/S-parameters here: http://www.jblproservice.com/pdf/Thiele Small Parameters/Theile Parameters.pdf

 

[Hyldal]

Sorry EspenE the driver is only a 8 or 10", and the other drivers are a 5" and a 25mm titanium dome.

 

[chops]

The 4410 uses a 10" driver.

http://www.jblpro.com/pub/obsolete/4410.pdf

 

[EspenE]

Sorry EspenE the driver is only a 8 or 10", and the other drivers are a 5" and a 25mm titanium dome.

You are both right, of course. The 127H-1 is a 10" driver. Slip of the finger.

The other drivers are a 104H-2 and a 035tiA titanium dome. The latter was replaced with the 052ti in 1993 or thereabouts.

 

[Hyldal]

Ok, EspenE thank you, do you know where to find the TS parameters on the woofer?

 

[Brett]

Ok, EspenE thank you, do you know where to find the TS parameters on the woofer?

See post 2 this thread.

 

[Hyldal]

I dont know if it is just me, but I dont se this woofer on JBL´s list of vintage woofers.

 

[EspenE]

Here are the parameters for the 127H-1:

Fs = 31 Hz
Qts = .357
Qms = 8.077
Qes = .3735
No = .87%
SPL = 91.58 dB
Cms = 6.8E-4 M/N
Mms = 38g
Bl = 11.07
Le = .76 mH
Re = 6.1 ohms
Vas = 112 l
Sd = 320 cm2

EspenE