Lowest mass 18"s in production -?

[freddi]

here's the basic info I got on a freshly reconed DL18 - new qes is ~0.6

factory spec EV 18B

FS - 33
Qts - .36
Qes - .376
Qms - 8.37


DL18 reconed with modern kit

FS - 36.7
Qts - .4895
Qes - .599
Qms - 3.963
Le - 1.793mH

[freddi]

its difficult to get more than 1mm peak to peak at loud levels in my room with EV18B and it reaches a K-tube so transients sound "fast"

[j.michael droke]

Originally Posted by freddi

I've got an empty 18" coupler which to try an EV - Art - do you know if MacKenzie's recone assemblies including the voicecoil are accurate reproductions?

Hi Freddi: Would you post the dimensions and "K" curve for the 18-inch Karlson you pictured? I'd like to construct one for my EV -18 reconned driver. I've not WT-3ed them yet. ....Michael

[freddi]

I don't have a drawing anymore but will get some dims - I think the wings are P=1/Q=1.7 up to a point then that's extended with a de-Q-ing slit- you could go with the Gauss 5181 K18 plans which has a bit more front and rear chamber. 18's will work in the regular Karlson K15

Cetec-Gauss 5181
http://img72.imageshack.us/img72/825/gaussbracing.jpg

here's a 5181 build - the guy was happy
http://gainclone.com/karlsonforum/index.php?topic=42.0