Air Motion Transformer-eng.indd
Air Motion Transformer-eng.indd
Air Motion Transformer-eng.indd
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
HOLOGRAPHIC SOUND DEVICES - <strong>Air</strong> <strong>Motion</strong> <strong>Transformer</strong><br />
AMT 2530 / 2540<br />
150*102*20 mm (l*w*h)<br />
AMT 2830 / 2930<br />
185*116*25 mm (l*w*h)<br />
AMT 2340<br />
AMT 2440<br />
130*102*20 mm<br />
(l*w*h)<br />
With the HOLOGRAPHIC SOUND<br />
DEVICES we introduce you to the<br />
latest product line from our establishment:<br />
Sound transducers of the highest<br />
quality from our own development<br />
and production. Stimulated by and<br />
based on the know-how of more than<br />
20 years of successful development<br />
and manufacture of audiophile components,<br />
we have rethought progressive<br />
and successfully applied concepts<br />
such as the <strong>Air</strong> <strong>Motion</strong> <strong>Transformer</strong><br />
or magnetostatic transducers and optimised<br />
them step by step.<br />
Based on principle, <strong>Air</strong> <strong>Motion</strong> <strong>Transformer</strong>s<br />
boast a much greater distortion-free<br />
dynamic range than other<br />
types of transducers (linear dynamic).<br />
The given nonlinearity in the high frequency<br />
range was fi nally able to be<br />
virtually completely eliminated with<br />
constructive innovations. The result is<br />
an extraordinarily neutral transducer<br />
with considerable dynamic potential.<br />
Of course, the fi nest dynamic nuances<br />
are reproduced, as well as the greatest<br />
dynamic leaps are brilliantly mastered.<br />
For instance, Qualifi ed Engineer Bernd<br />
Timmermanns from the HOBBY HiFi<br />
measuring laboratory also reported<br />
the following about our AMT 2340: “…<br />
with perfect linear sound pressure<br />
frequency response and excellent<br />
decay behaviour… as a result, this<br />
tweeter is one of the most low-distortion<br />
tweeters that Hobby HiFi has<br />
ever examined in the laboratory”<br />
(HH 1/2005, Page 17), and he writes<br />
further about the musical qualities:<br />
“What makes the ‘debut’ so special<br />
is its ability to allow music to fl ow.<br />
This fl ow lives from the fi ne overtones,<br />
from gentle nuances that do not<br />
languish between the major signals,<br />
but stand their ground in an enti-<br />
AMT 2340 AMT 2440 AMT 2530 AMT 2540 AMT 2630 AMT 2640 AMT 2730<br />
Dimension (mm) 130*102*20 150*102*20 200*100*20 276*100*20<br />
Purpose<br />
HiFi / High End<br />
Impedance 3.9 Ohm 3.5 Ohm ~3.5 Ohm ~3.8 Ohm ~3.4 Ohm ~3.4 Ohm 5.5 Ohm<br />
Frequency range (Hz) 2,200-23,000 2,600-30,000 1,300-22,000 1,500-26,000<br />
estimate:<br />
1,200-21,000<br />
estimate:<br />
1,300-26,000 1,000-21,000<br />
Sensitivity (dB)<br />
(1watt/1meter)<br />
90 90 98 98 100 100 100<br />
Power handling 100 Watt 100 Watt 80 Watt 80 Watt 130 Watt 130 Watt 150 Watt<br />
rely unencumbered and matter-offact<br />
manner. …of course, the piano,<br />
with its astoundingly perceptible<br />
outlines also seems to be so close<br />
you can touch it… in particular, live<br />
recordings gain enormously”.<br />
Our <strong>Air</strong> <strong>Motion</strong> <strong>Transformer</strong> (AMT)<br />
series currently consists of fi ve<br />
models: The AMT 2340 and AMT<br />
2440, provided in identical housing,<br />
differ in the used membrane and the<br />
frequency response generated thereby.<br />
Both measurements are given for<br />
comparison. It is also available in the<br />
2530/2540 two membranes.<br />
Succeeding you will see the measurements<br />
.
110<br />
100<br />
90<br />
80<br />
70<br />
60<br />
800 900 1k 2k 3k 4k 5k 6k 7k 8k 9k10k 20k 30k<br />
Hz<br />
Phase<br />
180<br />
dB<br />
90<br />
00<br />
-90<br />
1.8<br />
1.6<br />
1.4<br />
1.2<br />
1.0<br />
[%]<br />
0.8<br />
0.6<br />
0.4<br />
0.2<br />
0.0<br />
1k 2k 3k 4k 5k 6k 7k 8k 9k 10k<br />
signal K2 K3 [Hz]<br />
AMT 2340 - ATB Precision<br />
0<br />
AMT 2340 - SPL 0.1 m / 1 m - 2 Volt<br />
-180<br />
800 900 1k 2k 3k 4k 5k 6k 7k 8k 9k10k 20k 30k<br />
Hz<br />
AMT 2340 - ATB Precision<br />
0.3 0.4 0.5 0.6 0.7 ms 0.8 0.9 1.0 1.1 1.2<br />
0 dB<br />
-50 dB<br />
[db]<br />
-5<br />
-10<br />
-15<br />
AMT 2340 - ATB Waterfal<br />
-20 00 10000<br />
-80<br />
-70<br />
-60<br />
Diagrams of: AMT 2340<br />
4 2<br />
6<br />
8<br />
10<br />
12<br />
14<br />
16<br />
18<br />
20<br />
[Hz]<br />
measuring ���������� equipment ��� �������� � � ���<br />
microphone �������� ��������� ������ �� ���<br />
��������� ������ �� ���<br />
��������� ������ �� ���<br />
rotary ��������� table ������� � �� � � �� �<br />
computer �������� �������� � � ������� � � � ���<br />
Amplifi �������������� er<br />
���� ��� ������<br />
���� �� ��� ��� � � �� ���� � � ���<br />
� � ��� ���� � � ���<br />
The driver ��� ������������ unit was mounted ����� on a ��baffl ����� e 30 ���������� x 30 cm with �� an �additional �� ��<br />
volume. �� The ����� volume ���encloses �� ������ the magnet ������� system � ��� and ���� 15 �������� mm of felt (33 � mm<br />
total depth x 90 mm x 150 mm).<br />
-50<br />
-40<br />
-30<br />
-20<br />
-90<br />
2 0 -2 -4 -6 -8 -10<br />
AMT 2340 - ATB Precision 0.2 m<br />
-10<br />
0<br />
1 kHz<br />
10<br />
-10<br />
20<br />
30<br />
40<br />
-8 -6 -4 -2<br />
Attention: on the scale of 2dB<br />
50<br />
0<br />
60<br />
70<br />
[periods]<br />
80<br />
-80<br />
-90<br />
2 0 -2 -4 -6 -8 -10<br />
-80<br />
-70<br />
-70<br />
-60<br />
-60<br />
-50<br />
-50<br />
-40<br />
-40<br />
-30<br />
-30<br />
-20<br />
-20<br />
-10<br />
-90<br />
2 0 -2 -4 -6 -8 -10<br />
-80<br />
-70<br />
-60<br />
-50<br />
-40<br />
-30<br />
-20<br />
2<br />
90 -90<br />
2 0 -2 -4 -6 -8 -10<br />
AMT 2340 - ATB Precision 0.2 m<br />
-10<br />
5 kHz<br />
0 10<br />
10 kHz<br />
0 10<br />
-10<br />
AMT 2340 - ATB Precision 0.2 m<br />
-10<br />
0<br />
-10<br />
AMT 2340 - ATB Precision 0.2 m<br />
20<br />
20<br />
30<br />
30<br />
40<br />
-8 -6 -4 -2<br />
Attention: on the scale of 2dB<br />
40<br />
-8 -6 -4 -2<br />
Attention: on the scale of 2dB<br />
10<br />
-10<br />
20<br />
30<br />
40<br />
-8 -6 -4 -2<br />
20 kHz Attention: on the scale of 2dB<br />
50<br />
50<br />
50<br />
0<br />
0<br />
0<br />
60<br />
60<br />
60<br />
70<br />
70<br />
80<br />
90<br />
2<br />
80<br />
90<br />
2<br />
70<br />
80<br />
90<br />
2
dB<br />
[%]<br />
120<br />
110<br />
100<br />
90<br />
80<br />
70<br />
-180<br />
800 1k 2k 3k 4k 5k 6k 7k 8k 9k10k 20k 30k 40k<br />
Hz<br />
Distortion AMT 2440 - membrane 20 / 20 µm - 2 Volt - 0.1 m<br />
10.0<br />
0 dB<br />
0<br />
9.0<br />
8.0<br />
7.0<br />
6.0<br />
5.0<br />
4.0<br />
3.0<br />
2.0<br />
1.0<br />
SPL AMT 2440 - membrane 20 / 20 µm - 2 Volt - 0.1 m & 1 m<br />
800 1k 2k 3k 4k 5k 6k 7k 8k 9k10k 20k 30k 40k<br />
Hz<br />
180<br />
90<br />
00<br />
-90<br />
phase<br />
0.0<br />
900 1k 2k 3k 4k 5k 6k 7k 8k 9k 10k<br />
signal K2 K3 [Hz]<br />
AMT 2440 - ATB Precision<br />
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0<br />
ms<br />
-50 dB<br />
[db]<br />
-5<br />
-10<br />
-15<br />
-20<br />
-25<br />
-30<br />
-80<br />
-90<br />
5<br />
ATB Waterfal AMT 2440 - membrane 20 / 20 µm - 2 Volt - 0.1 m<br />
1000 10000<br />
Diagrams of: AMT 2440<br />
4 2<br />
6<br />
10 8<br />
12<br />
14<br />
16<br />
18<br />
20<br />
[Hz]<br />
The AMT 2440 and the AMT2340 have identical<br />
dimensions, but the AMT 2440 has a strongly expanded<br />
frequency response for higher frequencies.<br />
The lower frequency limit is also somewhat higher.<br />
-70<br />
-60<br />
-50<br />
-40<br />
-30<br />
AMT 2440 - 0.5 m - red = horizontal / blue = vertical<br />
-20<br />
-10<br />
0 -5 -10 -15 -20 -25<br />
0<br />
2.5 kHz<br />
10<br />
-25<br />
20<br />
30<br />
40<br />
-20 -15 -10 -5<br />
50<br />
0<br />
60<br />
[periods]<br />
70<br />
80<br />
-80<br />
-90<br />
5<br />
-80<br />
-70<br />
-90<br />
5<br />
-80<br />
-70<br />
-70<br />
90<br />
5<br />
-90<br />
5<br />
-60<br />
-60<br />
-60<br />
-50<br />
-40<br />
-40<br />
-30<br />
-30<br />
AMT 2440 - 0.5 m - red = horizontal / blue = vertical<br />
Attention: ACHTUNG: on skaliert the scale in Schritten of 5dB von 5 dB<br />
16 kHz Attention: ACHTUNG: on skaliert the scale in Schritten of 5dB von 5 dB<br />
-20<br />
-10<br />
0 -5 -10 -15 -20 -25<br />
-50<br />
-10<br />
0<br />
6,3 kHz<br />
AMT 2440 - 0.5 m - red = horizontal / blue = vertical<br />
-20<br />
0 -5 -10 -15 -20 -25<br />
-50<br />
-40<br />
-30<br />
0<br />
10 kHz<br />
0<br />
10<br />
-25<br />
20<br />
30<br />
40<br />
50<br />
60<br />
ACHTUNG: Attention: on skaliert the scale in Schritten of 5dB<br />
von 5 dB<br />
10<br />
-25<br />
AMT 2440 - 0.5 m - red = horizontal / blue = vertical<br />
-20<br />
-10<br />
0 -5 -10 -15 -20 -25<br />
-20 -15 -10 -5<br />
20<br />
30<br />
40<br />
-20 -15 -10 -5<br />
50<br />
0<br />
60<br />
Attention: ACHTUNG: on skaliert the scale in Schritten of 5dB von 5 dB<br />
10<br />
-25<br />
20<br />
30<br />
40<br />
-20 -15 -10 -5<br />
50<br />
0<br />
0<br />
60<br />
70<br />
70<br />
80<br />
90<br />
5<br />
80<br />
90<br />
5<br />
70<br />
80<br />
90<br />
5
0<br />
110<br />
100<br />
90<br />
80<br />
70<br />
dB 120<br />
800 900 1k 2k 3k 4k 5k 6k 7k 8k 9k 10k 20k 30k<br />
Hz<br />
180<br />
90<br />
00<br />
-90<br />
AMT 2530 - SPL - 2.8 Volt 0.1 m - 1 m<br />
phase<br />
-180<br />
800 900 1k 2k 3k 4k 5k 6k 7k 8k 9k 10k 20k 30k<br />
Hz<br />
-20<br />
00 10000<br />
110<br />
100<br />
90<br />
80<br />
70<br />
dB 120<br />
800 900 1k 2k 3k 4k 5k 6k 7k 8k 9k 10k 20k 30k<br />
Hz<br />
180<br />
90<br />
00<br />
-90<br />
AMT 2540 - SPL - 2.8 Volt 0.1 m - 1 m<br />
phase<br />
-180<br />
800 900 1k 2k 3k 4k 5k 6k 7k 8k 9k 10k 20k 30k<br />
Hz<br />
AMT 2530 - 2.8 Volt 0.1 m / mounted on a baffl e 26 x 120 cm<br />
0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2<br />
ms<br />
[db]<br />
-5<br />
-10<br />
-15<br />
-80<br />
-70<br />
-60<br />
-50<br />
Diagrams of: AMT 2530 and AMT 2540<br />
-40<br />
AMT 2530 - Waterfal - 2.8 Volt 0.1 m / mounted on a baffl e 30 x 30 cm<br />
-30<br />
-10<br />
-90<br />
5 0 -5 -10 -15 -20 -25<br />
AMT 2530 - Polar - red = horizontal / blue = vertical<br />
-20<br />
0<br />
2.5 kHz<br />
10<br />
-25<br />
20<br />
4<br />
[Hz]<br />
2<br />
6<br />
10 8<br />
12<br />
14<br />
16<br />
18<br />
20<br />
30<br />
40<br />
-20 -15 -10 -5<br />
Attention: on the scale of 5 dB<br />
50<br />
0<br />
60<br />
70<br />
[periods]<br />
80<br />
-80<br />
-70<br />
-60<br />
-50<br />
-40<br />
-30<br />
-10<br />
-90<br />
5 0 -5 -10 -15 -20 -25<br />
-80<br />
-70<br />
-60<br />
-40<br />
-30<br />
AMT 2530 - Polar - red = horizontal / blue = vertical<br />
-20<br />
-10<br />
-90<br />
5 0 -5 -10 -15 -20 -25<br />
-80<br />
-70<br />
-60<br />
-50<br />
-50<br />
-40<br />
-30<br />
0<br />
6.3 kHz<br />
0<br />
10<br />
-25<br />
20<br />
30<br />
40<br />
-20 -15 -10 -5<br />
Attention: on the scale of 5 dB<br />
AMT 2530 - Polar - red = horizontal / blue = vertical<br />
-20<br />
-10<br />
90<br />
5 -90<br />
5 0 -5 -10 -15 -20 -25<br />
10<br />
-25<br />
20<br />
30<br />
40<br />
-20 -15 -10 -5<br />
10 kHz Attention: on the scale of 5 dB<br />
AMT 2530 - Polar - red = horizontal / blue = vertical<br />
-20<br />
0<br />
10<br />
-25<br />
20<br />
30<br />
40<br />
-20 -15 -10 -5<br />
16 kHz Attention: on the scale of 5 dB<br />
50<br />
50<br />
50<br />
0<br />
0<br />
0<br />
60<br />
60<br />
60<br />
70<br />
80<br />
90<br />
5<br />
70<br />
70<br />
80<br />
90<br />
5<br />
80<br />
90<br />
5
120<br />
110<br />
100<br />
90<br />
80<br />
dB 130<br />
500 600 700 800 1k 2k 3k 4k 5k 6k 7k 8k 9k 10k 20k 30k<br />
Hz<br />
phase<br />
180<br />
90<br />
00<br />
-90<br />
AMT 2730 - SPL - membrane 25/50 - 2.8 Volt / 0.1 m - 1 m - chassis & baffl e 30 x 30cm<br />
-180<br />
500 600 700 800 1k 2k 3k 4k 5k 6k 7k 8k 9k 10k 20k 30k<br />
Hz<br />
10.0<br />
0<br />
9.0<br />
8.0<br />
7.0<br />
6.0<br />
5.0<br />
4.0<br />
3.0<br />
2.0<br />
1.0<br />
AMT 2730 - Distorsion - membrane 25/50 - 2.8 volt - chassis & baffl e 30 x 30cm<br />
0.0<br />
1k 2k 3k 4k 5k 6k 7k 8k 9k 10k<br />
signal K2 K3<br />
Hz<br />
AMT 2730 - 2.8 Volt / 0.1 m / chassis & baffl e 30 x 30cm<br />
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0<br />
ms<br />
0 dB<br />
-50dB<br />
[db]<br />
-5<br />
-10<br />
-15<br />
-20<br />
-25<br />
-30<br />
-80<br />
-70<br />
-60<br />
-50<br />
AMT 2730 - Waterfal - membrane 25/50 -2.8 Volt / 0.1 m / chassis & baffl e 30 x 30 cm<br />
1000 10000<br />
-40<br />
-30<br />
-90<br />
5 0 -5 -10 -15 -20 -25<br />
Diagrams of: AMT 2730<br />
AMT 2730 - Polar - red = horizontal / blue = vertical<br />
-20<br />
-10<br />
0<br />
2.0 kHz<br />
10<br />
-25<br />
20<br />
4<br />
[Hz]<br />
2<br />
6<br />
10 8<br />
12<br />
14<br />
16<br />
18<br />
20<br />
30<br />
40<br />
-20 -15 -10 -5<br />
Attention: on the scale of 5 dB<br />
50<br />
0<br />
60<br />
70<br />
[periods]<br />
80<br />
-80<br />
-70<br />
-60<br />
-50<br />
-40<br />
-30<br />
-90<br />
5 0 -5 -10 -15 -20 -25<br />
-80<br />
-70<br />
-60<br />
-50<br />
-40<br />
-30<br />
90 -90<br />
5 5 0 -5 -10 -15 -20 -25<br />
AMT 2530 - Polar - red = horizontal / blue = vertical<br />
-20<br />
-10<br />
-10<br />
-90<br />
5 0 -5 -10 -15 -20 -25<br />
-80<br />
-70<br />
-60<br />
-50<br />
-40<br />
-30<br />
0<br />
6.3 kHz<br />
0<br />
10<br />
-25<br />
20<br />
30<br />
40<br />
-20 -15 -10 -5<br />
Attention: on the scale of 5 dB<br />
AMT 2730 - Polar - red = horizontal / blue = vertical<br />
-20<br />
-10<br />
10<br />
-25<br />
20<br />
30<br />
40<br />
-20 -15 -10 -5<br />
10 kHz Attention: on the scale of 5 dB<br />
AMT 2730 - Polar - red = horizontal / blue = vertical<br />
-20<br />
0<br />
10<br />
-25<br />
20<br />
30<br />
40<br />
-20 -15 -10 -5<br />
16 kHz Attention: on the scale of 5 dB<br />
50<br />
50<br />
50<br />
0<br />
0<br />
0<br />
60<br />
60<br />
60<br />
70<br />
80<br />
90<br />
5<br />
70<br />
70<br />
80<br />
90<br />
5<br />
80<br />
90<br />
5
dB<br />
180<br />
90<br />
00<br />
-90<br />
AMT 2830 - SPL 2 Volt 0.1 m and 1 m / mounted on a baffl e 30 x 30 cm<br />
120<br />
110<br />
100<br />
[db]<br />
90<br />
80<br />
-5<br />
70<br />
500 600 700 800 1k 2k 3k 4k 5k 6k 7k 8k 9k 10k 20k 30k<br />
Hz<br />
-10<br />
phase<br />
-180<br />
500 600 700 800 1k 2k 3k 4k 5k 6k 7k 8k 9k10k 20k 30k<br />
Hz<br />
AMT 2830 - ATB precision<br />
-30<br />
1000 10000<br />
5.0<br />
0 dB<br />
4.5<br />
4.0<br />
3.5<br />
3.0<br />
2.5<br />
2.0<br />
1.5<br />
1.0<br />
0.5<br />
0.0<br />
800 900 1k 2k 3k 4k 5k 6k 7k 8k 9k 10k<br />
signal K2 K3<br />
Hz<br />
0<br />
AMT 2830 - ATB precision<br />
-50 dB<br />
0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3<br />
ms<br />
1.4 1.5 1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3<br />
-15<br />
-20<br />
-25<br />
-75<br />
-60<br />
-45<br />
-30<br />
-90<br />
2 0 -2 -4 -6 -8 -10<br />
AMT 2830 - ATB Waterfal<br />
Diagrams of: AMT 2830<br />
The „large“ AMT is offered as AMT 2830 for Hifi applications.<br />
The frequency range goes from approx. 1,200 Hz to 21,000 Hz.<br />
-15<br />
AMT 2830 AMT 2930 AMT 3140<br />
Dimension (mm) 185*116*25<br />
276*116*25<br />
Purpose HiFi / PA<br />
PA<br />
Impedance ~3.4 ohm ~3.4 ohm 4.3 ohm<br />
Frequency range (Hz) 1,200-21,000 1,200-20,000<br />
Sensitivity (dB)<br />
(1watt/1meter)<br />
104 108<br />
Power handling<br />
150 watt<br />
AMT 2830 - ATB precision<br />
0<br />
1 kHz<br />
-10<br />
15<br />
30<br />
45<br />
-8 -6 -4 -2<br />
Attention: on the scale of 2dB<br />
0<br />
60<br />
75<br />
[periods]<br />
-75<br />
-60<br />
4<br />
[Hz]<br />
2<br />
6<br />
10 8 -90<br />
12<br />
2 0 -2 -4 -6 -8 -10<br />
14<br />
16<br />
18<br />
20<br />
estimate:<br />
700-21,000<br />
estimate:<br />
108<br />
-75<br />
-60<br />
-45<br />
-45<br />
-30<br />
-30<br />
-15<br />
-15<br />
-90<br />
2 0 -2 -4 -6 -8 -10<br />
-75<br />
-60<br />
-45<br />
-30<br />
-15<br />
2<br />
90 -90<br />
2 0 -2 -4 -6 -8 -10<br />
AMT 2830 - ATB precision<br />
0<br />
5 kHz<br />
0<br />
10 kHz<br />
16 kHz<br />
-10<br />
AMT 2830 - ATB precision<br />
-10<br />
AMT 2830 - ATB precision<br />
0<br />
-10<br />
15<br />
15<br />
15<br />
30<br />
45<br />
-8 -6 -4 -2<br />
Attention: on the scale of 2dB<br />
30<br />
45<br />
-8 -6 -4 -2<br />
Attention: on the scale of 2dB<br />
30<br />
45<br />
-8 -6 -4 -2<br />
Attention: on the scale of 2dB<br />
0<br />
0<br />
0<br />
60<br />
60<br />
60<br />
75<br />
90<br />
2<br />
75<br />
90<br />
2<br />
75<br />
90<br />
2