Available from BlieSMa, Germany, an extension of the dome tweeter product
range by a 34 mm Beryllium version of the tweeter tested a few months
ago. Read
here and get background info.
Price will be around 390 EUR + VAT.
Go to BlieSMa
website.
Based on the measurements below and simulation
of the tweeter with various mid-bass drivers, I'm looking forward to
implementing these tweeters in future designs.
Tweeters come with impeccable finish.
Download T34B-4 specs
here.
Frequency response of two tweeters on a 60 x
100 cm baffle.
As can be seen the break-up node comes around 33 kHz, some 4 kHz higher
than the AlMg variant.
Impedance of the two tweeters, Fs ~800 Hz on
average.
T34A-4 (green and orange) compared to T34B-4 (red and yellow).
As can be seen a very flat response and some 2-3 dB higher sensitivity of the Be dome.
CSD of unit 1.
CSD of unit 2. In both cases a very clean performance.
2nd order distortion measured at input equivalent to 104, 98 and 92 dB @
1 meter distance.
2nd harm.: Green, blue and light blue.
These tweeters appears suitable for a very low point of crossover
between 1 and 2 kHz, thus two-ways from 8" drivers should be possible.
3rd harm. distortion at same levels. As usual 3rd harm. is very low.
Horizontal dispersion at 0, 10, 20, 30 and 40 deg. off-axis.
Click images to view large.
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