MD 3

AER MD 3

The AER MD 3 uses our strongest and biggest rare neodymium magnet. The ends of the air gap where as a matter of principle magnetic distortion are created are very far away from the voice coil. The magnetic field is driven into saturation and stretched very long in a homogenous way. Pole plates and pole piece are dimensioned that way that a especially flat rising of the impedance curve towards high frequencies is guaranteed.

The neodymium magnet by means of thick pole plates is protected against electromagnetic fields. It is characterized by a high cross section and by its very low electrical impedance. All magnetic field lines are used for the motorisation in the centre-near area of the air gap. Voice coil and diaphragm of this loudspeaker are capable to do excursions of 7 millimetres without leaving the full transmission area of the magnet.

This drive unit is designed according to the AER Formulae and shows an extreme flat frequency response curve, particularly showing a very high efficiency in the highest highs. It is especially designed for big front loaded horns with highest efficiency. The horns have to be able to support the drive units in the low frequency and mid range area and need to have exactly the same efficiency as the drive unit itself. For that reason they should have a very high acoustical impedance towards lower frequencies. By means of its special design-characteristics the magnetic inductance of the MD 3 was increased again and the field strength of the magnet was risen dramatically resulting in an even higher efficiency that is making the system to an ideal front horn drive-unit..

For that reason this loudspeaker should only be used in AER horn systems for example the AER EXCenter Horn in the following called AER EXCH. Used this way the AER MD 3 in our opinion is the summit of the physically and acoustically possible. Listening to the AER MD 3 a tremendous and beautiful mid range is spread crowned by a fantastically brilliant soft and mild high and super high range -far up to the supersonic range.
Music by that is getting an absolute extraordinarily plastic figure so as if you could pick single tones out of the music. In combination with a powerful subwoofer system listening music is getting a tremendous adventure.
The MD 3 fascinates you with an extreme full and warm sound and truly explosive and eruptive dynamics, a breath taking never heard before resolution and is extreme rich in musical detail


	Details MD 3
			Frequenzgang (in geeignetem Gehäuse): Übertragungsbereich: Wirkungsgrad: Belastbarkeit (in geeignetem Gehäuse): Impedanz: Gleichstromwiderstand: Nennresonanzfrequenz: Mechanischer Q-Faktor Qms: Elektrischer Q-Faktor Qes: Gesamt Q-Faktor Qts: VAS: Luftspaltinduktion: Feldstärke: Breite x Höhe des Korbes: Gesamttiefe: Befestigungslochanordnung rechteckig: 4 x Lochdurchmesser: Schallwandausschnitt: Gewicht (Masse):


	20 Hz - 21.000 Hz +/- 2,5 dB 20 - 80.000 Hz 106 dB / 1 W / 1 m 100 W nom. / 300 W mus. 16 Ohm 12,8 Ohm 38,1 Hz 4,3772 0,2730 0,2570 80,4198 Liter 2,28 Tesla 500.000 Maxwell 20,2 cm x 20,2 cm 7,93 cm 14,0 cm x 15,2 cm 7,0 mm 19,0 cm 5,7 kg


	Messparameter

	BK 2610 BK 4138 BK Vorverstärker MLSSA Integrierte Messung 0° ± 30° Messabstand: 4 m


	BK 2610 BK 4138 BK Vorverstärker MLSSA Messabstand: 4 m


	THIELE-SMALL PARAMETERS


	PARAMETER Tesla Fs Fs Added Mass Fs Known Vol Added Mass Known Vol Diameter ZMax ZMax Added Mass ZMax Known Vol Z F1F2 Re Rms Qms Qes Qts Cms Mms

WERT
2.28
39.7428
27.9480
0.0000
15.7000
0.0000
165.0000
214.6260
155.8104
0.0000
52.0028
12.8000
0.6451
4.3772
0.2730
0.2570
1.2596
10.0449


	PARAMETER BL VAS dBSPL L 1kHz L 10kHz CAS RAS MAS RAT SD LCES CMES RES MMD RMT eta Z Min Z AVG

WERT
11.4164
80.4198
106 (96.2365*)
1.5418
0.2987
5.759224E-7
1411.0380
21.9700
24035.3600
0.0214
164.1761
77.0698
202.0260
8.2752
10.9892
2.5331
12.9742
31.4015

*averaged incl. low-midrange and base

AER MD 3B

The AER MD 3B is a comparatively new AER design the stands for a bass. In this unit a very large rare neodymium disc magnet is used. And therefore in comparison to the MD 2B besides a slightly risen efficiency especially dynamics and attack could be improved again. The magnetic field is very long and homogeneous in the whole air gap.


Erläuterung: Die Thiele-Small Parameter sind unterstützend für die Berechnung von Horngehäusen geeignet. Sie dienen üblicherweise zur Innenvolumen-Berechnung von geschlossenen Gehäusen und Bassreflexboxen. Für alle Werte gelten geringfügige Toleranzen.

The pole plates are dimensioned in a way that the neodymium magnet is protected against magnetic field distortions of the voice coil very well. It has a very high cross section area and inside a low electrical impedance. Along the whole air gap length all lines of the magnetic field are used for the transmission of force. The widened air gap allows an excursion of the moving membrane of 10 millimetres without leaving the linear motorized area also at tremendous impulses.

The MD 3B was intentionally designed as a real fullrange drive-unit to get a controlled base. It is designed according to the modified AER Formulas and appears with a very flat frequency response curve and a reduced high efficiency. The high mass of the whole magnetic construction guarantees an extraordinary stability of the sound stage.
The MD 3B is designated for the use in front loaded and back loaded horns. By means of the stronger and lager magnet compared to the smaller B- models it has again increased dynamics, improved resolution and its ability to differentiate is so extreme that it is also especially designated as a mid & high range unit. Its special destination is in the use as a fullrange drive-unit.
In comparison to the other B-models the MD 3 B shows an even stronger and more mighty base that spreads full forces - the use of a subwoofer is obsolete. For the mentioned reasons the MD 3 can reproduce astonishingly levels in the bass range.
Build into the AER Acoustique or AER Acoustic you get an increase in the level below 100 Hertz up to 8 db. Listening to the MD 3B an extraordinarily balanced and beautiful mid range is crowned by a fantastically glowing soft and mild high & highest range, widely ranking into the ultra sonic.
Music gets a realistic and truthful plastic shape as if someone could pick out the single tones. Listening to music will get an impressive experience.
The MD 3B fascinates you with very full and explosive dynamics, a up-to-date never heard resolution and richness in acoustical detail.