can you let me know which eminence driver has the closest spec compare to the following and also can you tell me which 15 eminence driver with a fs/Qes>120

Visaton BGS 40 8 OHM
Art. No. 3040
40 cm (15") woofer with hard cone suspension

Technical Data:
Nominal power handling 200 Watt
Peak power handling 300 Watt
Nominal impedance 8 Ohm
Frequency response fc- 4000 Hz
Mean sound pressure (nominal) 98 dB (1 W/1 m)
Maximum cone displacement 16 mm
Resonance frequency 38 Hz
Magnetic induction 1,1 Tesla
Magnetic flux 1800 µ Weber
Height of front pole-plate 8 mm
Voice coil diameter 6,5 cm
Height of winding 1,2 cm
Cutout diameter 35,9 cm
Net weight 5,4 kg
D.C. resistance Rdc 6,5 Ohm
Mechanical Q factor Qms 1,3
Electrical Q factor Qes 0,4
Total Q factor Qts 0,31
Equivalent volume Vas 263 l
Effective piston area Sd 855 cm2
Dynamically moved mass mmd 80 g
Force factor Bxl 16,8 T · m
Inductance of the voice coil 1,55 mH

thank you

Fs 39
qts .35
vas 196 litres

It has an EBP of 109. Here are a couple others.
Kappa Pro LF 15" - EBP 117
Kappa 15" - EBP 115
Magnum 15HO - EBP 117

Those are their 15" drivers with the higher EBP's.

Adam

look at Madisound's Eminence 151311 @$79US

pretty close to your Visaton

fs/qes=119.375
fs=38.2,qes=0.32,qms=7.73,vas=299l,re=5,xmax=5.5mm, mms=60.1g,BL=14.9

Le isn't specified but I'd guess around 1mH - goes out>3Khz on axis as direct radiator - am looking at it for inexpensive Karlson driver

Freddy

Many thanks for the infor and advice

i intend to build the visaton MB 115/b bass horn with eminence driver, the visaton bqs 40 driver is reather difficult to obtain here in my country, i wrote to them but they did not reply, infact it would be to expensive to get them in from Germany, for the eminence they have the distributor here and i can get them at good price, beside i like the good old American sound.

i really have no experience with all this stuff but very keen to learn and experience with speaker especially horn speaker, from what i see i think the Kappa 15 is close to the spe of the visaton driver, i may be wrong.

i would really appreciate your help to realize my intention.

Zeno

You might want to consider JBL drivers as well... Much more expensive, but you can probably find something that will match the driver you want in all categories, including xmax.

Adam

thanks for your input

can you please let me know which is the Eminence driver is best suit and come close for my project, the JBL are far too expensive here.

thanks

Zeno G

probably the light-cone Kappa Pro 15 with ~3mm xmax would do OK for the Viston horn - you're probably going to get ~300-350Hz HF corner then go into a slow slope region - in US, cast-frame "Pro" versions of Eminence cost about the same as stamped-frame models - mainly paying for magnet

best wishes!
Freddy

thanks