ScanSpeak D3004/602200 tweeter
Copyright 2022 © Troels Gravesen
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Looking at the ScanSpeak website we see a wide range of small faceplate tweeters either being updated or discontinued, but also a new addition, the D3004/602200.
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I was curious about the D3004/602200 being in many ways similar to the
my beloved D3004/660000, but with a small faceplate and maybe useful in
places where space is an issue - or if I want a tweeter very close to a
midrange driver, who knows what the future may bring.
ScanSpeak was kindly offering me a pair for test and review. Below my
measurements - sonic evaluation will have to wait for some future
construction.
Download ScanSpeak data sheet: D3004/602200
Despite a rugged rear chamber, the
D3004/602200 is very light, only 130 grams.
Tweeter setup for measurements. Baffle is 80
x 120 cm.
Tweeter carefully flush mounted as should be for measurements!
The dome itself may look like a D3004/660000
dome, but it isn't.
Left the 6600 dome, right the 6022 dome. Different fabric is used for
the domes, the 6022 has double weft - or warp - threads depending on
orientation. Seen before, but I have forgotten where.
At first sight, the ScanSpeak FR looks
a bit dubious.
Rather uneven frequency response around 6-7 kHz, so I was anxious to make my own readings.
The frequency response of the two units I
received.
Quite a matched pair- and no wobbly response around 6-7 kHz, rather a very
smooth response all the way to around 30-40 kHz.
Here the response of the two units shown from
500 - 20000 Hz. What's not to like.
Impedance of the two units.
These tweeters really do have a very low point of resonance! Here ~420
Hz.
Horizontal dispersion at 0, 10, 20, 30 and 40
deg. off-axis.
Distortion at a level equivalent to ~84 dB @
1 meter.
Green = 2nd harm., orange = 3rd harm.
Distortion
at a level equivalent to ~90 dB @ 1 meter.
Green = 2nd harm., orange = 3rd harm.
Distortion
at a level equivalent to ~96 dB @ 1 meter.
Green = 2nd harm., orange = 3rd harm.
Overall, this tweeter seems more than suitable to below 2 kHz - and as always, depending on slopes used.
Waterfall plot of unit 1.
Waterfall plot of unit 2.
05-11-2023: The ring variant R3004/602200 has been added just after this page going public.
