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(KISS - Shout it out loud)

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Saturday, April, 8th. 2006


LA CIGARRA is actually a diy design with the MOTH Audio CICADA Driver which is heavily
based on the plans for the original cicada cabinet. As of now "only" the MOTH Audio Cicada Plans & Sheets,
because their Website is "non responding" - at least the last few weeks. I hope they'll get online again.

This is a very interesting driver, and as far as I know (Feb. 2006) it can be bought at various dealers.
 I don't actually know if it are remainders or new production.

HUURRAYY: Some people are looking at my web site. Just now (April, 5th. 2006), I received an
m@il-question regarding the used damping material in the original cicada cabinets.  When I build
 the cabinets there was no info to get which damping materials to use. So I m@iled a guy at Moth-Audio:

----- Original Message -----
To: <ron at mothaudio.com>
Sent: Tuesday, February 11, 2003 6:45 PM
Subject: cicada speakers

Hello ron,
i've recently bought the cicada drivers and want to build the speaker cabinet published at your web site.
i think that everything is clear to me
except the use of damping materials.
do you use any damping materials inside
the cabinets? what is it and where it's mounted.

and that was his reply:

-------- Original Message --------
Subject:     Re: cicada speakers
Date:     Tue, 18 Feb 2003 15:27:17 +0000
From: <ron at mothaudio.com>

2" fiberglass works best. Put it on all sides but do not cover the port.

################ INTERMEDIATE # STEP ################

Sorry I missed that, but I didn't want to keep it back.
I'm planning to share ALL the infos I can get about the CICADAs.
Shortly after the CICADAs were available in Germany,
a German DIY speaker builder magazine measured the TS parms, and - yeah
you can guess it - there was a huge difference between the "official"
Moth-Audio parms and the measured ones.
Here are the measured ones:

Re= 11.2 ohms
Le= 0.13mH
Fs= 47.3Hz
Qms= 9.6
Qes= 1.23
Qts= 1.1
Sd= 201 qcm
Vas= 58.5 liters
Cms= 1.03 mm/N
Mms= 11 gramms
Rms= 0.34 kg/s
BxL= 5.42 N/A
SPL= 91dB

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Sunday, October, 4th. 2009
Cigarra V2

Somehow this is the description of the CICADA V2.
After playing around some months with the CICADA chassis in  Lowter Classic 200 cabinets,
I decided to mount them back in the first cabinets I build for them. The bass in the Lowther Horns
was much too flat with the CICADA chassis. Once back in there original cabinets, I decided to play
around with the vent dimensions. I always had the assumption that having the vent on the back
 of the cabinets might have been the wrong decision in order to get the most bass out of the
whole speaker. So I tried different vents and vent-positions/lengths. After a lot of listening I
sticked with the Intertechnik BR/Jet72 in its full length, though I'm sure that the box now
isn't tuned according to the books :-). But I don't care, it's now tuned to my earZ. Additionally
I decided already long ago, that the CICADAs need high frequency support. I also did
a lot of testing and listening on that and recently decided for a VEERY unobstrusive support
from the Swans TN-28 tweeter.

The CICADA V2 is (H)926mm x (W)251mm x (D)258mm gross.
The used material is 19mm MDF which is additionally covered with 4mm birch ply at both sides,
front & top. The BR/Jet72 is mounted 150mm away from the bottom at the center of the front.
The TN-28 is connected via a cap (so 6db) and divider network:

cigarra Swan Circuit

I'm using NO countour filter (LC, RC, zobel, whatever) on the CICADA chassis itself.


The ORIGINAL Cicada Sheets:

Driverflyer (pdf - 161KB)
Cabinet-Drawing/Construction (pdf - 62KB)
Port Cut-Out Drawing (pdf - 53KB)
Driver Cut-Out Drawing (pdf - 104KB)
Driver Impedance Chart (pdf - 19KB)


LinkZ to some siteZ with CICADA reviews/addictions/whatever . . .
TNT-Audi0
Stere0phile
M0thmuZeum
enj0yTheMuZiC
enj0yTheMuziC_(fromaHiviShow:-)
maclementh0rn.it


Feel free to contact me, if you have any questions, suggestions, comments etc.

audio/diy-linkZ