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I am starting with this projects a full-range drivers test and I will compare many of this drivers in the 2008.
COMPONENTS
AER MD-1 Technical Data declared:
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Frequency Response
(in recommended housings) : |
20 Hz - 20.000 Hz |
| Efficiency : | 103,5 dB / 1W / 1 m |
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Loadability (in recommended housings) : |
40 W nom. / 80 W mus. |
| Impedance [R] : | 11,5 Ohm |
| Compl. Impedance [Z] : | 16,0 Ohm |
| Resonant frequency : | 31,0 Hz |
| Mechanic Q-Factor Qms : | 5,4 |
| Elektric Q-Factor Qes : | 0,37 |
| Q-Factor Qts : | 0,35 |
| Equivalent volume [VAS] : | 90 Ltr. |
| Xmss : | 4 mm |
| Induction : | 1,95 Tesla |
| Mag. Flux : | 320.000 Maxwell |
| Depth : | 6,5 cm |
| Bore Diameter : | 19,0 cm |
| Mass : | 3,1 kg |
AER MD-1 Technical Data
measured by Clio system
by
Audiomatica:
| Impedance [R] : | 11 Ohm |
| Resonant frequency : | 52,750 Hz |
| Mechanic Q-Factor Qms : | 6,7 |
| Elektric Q-Factor Qes : | 0,4765 |
| Q-Factor Qts : | 0,445 |
| Equivalent volume [VAS] : | 46.16 Ltr. |
| BL | 8.1109 |
PROJECT
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This first test
has been created using the
Apostrophe' box reducing only the hole area of 50%. Simulated with the Mathcad spreadsheet created by Martin J. King
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MEASUREMENTS
Here are some plots generated with my Clio system by Audiomatica.
On the Apostrophe' box without filter.
On the Apostrophe' box with a series filter 10mH // 11.2ohm (sensibility reduced to 90-91db).
On the Apostrophe' box with a series filter 10mH // 11.2ohm at 30 grades.
On the Apostrophe' box with a series filter 5mH // 11.2ohm.
On the Apostrophe' box with a series filter 3.7mH // 11.2ohm (my choice).
On the Apostrophe' box with a series filter 1mH // 11.2ohm.
