Le8t-2...?

[boputnam]

Any idea what application this was designed for? Visually identical to the LE8T, except the cone is very, VERY thin, no Aquaplas.

Specs?

Thanks.

[4313B]

The LE8T-2 is the home version of the 2115A.

Fs = 55 Hz
Qms = 4
Vas = 36 liters
Cms = 761 µm/N
Mms = 11 g
Rms = 0.95 mohms
Xmax = 5.588 mm
Xmech = 11.18 mm
P-Dia = 152.4 mm
Sd = 0.0183 sq.m
P-Vd = 102 cu.cm
Qes = 0.54
Re = 5.5 ohms
Le = 0.3 mH
Z = 8 ohms
BL = 6.2 Tm
Pe = 30 watts
Qts = 0.48
no = 1.07 %
1-W SPL = 92.4 dB
2.83-V SPL = 94.1 dB

(The LE8TX is a 16 ohm version.)

[Mr. Widget]

I may be making this up, but I seem to remember that it was the variant used in the Aquarius 4.

[4313B]

Yep, the S109 Aquarius IV, along with the LE20-1 and LX12-7

[boputnam]

Giskard - those T-S parameters for the LE8T-2 produce a decidedly different response curve from the LE8T and the 2215A (using WinISD 0.44).

All told, it looks like the LE8T is the superior full-range transducer? It doesn't roll off until 40Hz, hitting -3dB at 35.6Hz. Thoughts?

Thanks again to both you and Mr Widget!

[4313B]

Thoughts about what?

[Mr. Widget]

When the library comes back on line, look up the Aquarius 4 and in the description of it's development they explain how and why the driver was modified.

Basically the LE8t-2 is pretty use specific.

[jesseklapholz]

When the library comes back on line, look up the Aquarius 4 and in the description of it's development they explain how and why the driver was modified.

Basically the LE8t-2 is pretty use specific.

As I recall the LE8T had a copper shorting ring which additionally added mass (ergo lower efficiency) tot he cone to lower it low-frequency resonance.

jesse klapholz