Crossover
simulation
Simulated
response from LspCAD
Kit Parts
Crossover
kit excl. drivers available from Jantzen Audio: contact@jantzen-audio.com
Damping
materials also available (felt/bitumen pads and
wool/acoustilux/dacron)
Superior Z cap version also awailable, but increase
cabinet depth to make up for added volume. The Sup-Z caps
are huge!
Measurements
 
Left:
Left and right speaker, SPL @ 1 meter/2.8 volts, merged
at 350 Hz with woofer nearfiled response.
Right: System impedance, min. 4.5 ohms at 500 Hz.
 
Left:
individual response of drivers from x-over and summed
response (red).
Right: Response with inverted tweeter polarity (blue)
showing excellent phase tracking at point of crossover.
Cumulative
spectral decay of system.
Hi Troels
Attached
is a photo of my system. The silver amp
was home-made almost 2 years ago (The stand was also
home made). As for the speakers, amazing may be the right
word, great sound with a deeper bass that I expected from
what I've read about this driver and considering that the
cabs are not tuned like they should and the driver is
new. The XT25 really is a great driver, especially at
this price. As I've told you I'm going to build new cabs,
but that may take a while. I'll send photos when they're
done. I'm going to share with you my idea for new cabs:
Imagine something like the Guarneri where the stand is
hollow. The look of a monitor with the volume of a
floorstander. Something around 24 liters (like the Amish)
may give a bass extension not expected from something
that looks small. And I think the 8545
"ugly" look will go great with a leather front
panel. What do you think? Now, if I can do it, is another
story. Many thanks for everything. Best regards, Adelino
Hi Adelino. Thanks for taking time to
respond to the kit#3. I'm pleased it seems to work out as
intended and thanks asking about tweeter placement. It
made me do the tests on tweeter placement - and the kits
generally more versatile. The XT25TG is an easy
driver and I have added the findings to the general CSM
page: http://www.troelsgravesen.dk/CSM.htm
The "ugly" cones should look really excellent
with leather as they did on the 1st generation Amati from
Sonus Faber.
CMS
Built by Michaël/France
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