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Now made by AAC of France, the (Audax) PR170M0 midrange. AAC was the parts supplier for Audax and has started building some of the Audax parts.
6.5" High Efficiency Paper Cone Midrange with treated flat foam surround
100dB efficiency
Ultra stiff die cast chassis
40mm voice coil diameter
Flat aluminum wire on fiberglass former
100 Watt power handling
Recommended frequency 500Hz to 8kHz
This midrange driver has been specifically designed for high quality professional sound reinforcement systems. Its efficiency and power handling capacity are exceptional for a direct radiation transducer in its category. The flat foam suspension is coated with a cisco-elastic compund in order to minimize the standing waves and cone break up. It is ideally suited to cover the frequency range from 500Hz to 8kHz. This driver is recognized worldwide as the reference in prestigous professional applications.
See attached pdf file for curve and specs.
Impedance 8 ohm
Resonance 117Hz
Power 100W
Sensitivity 100dB
Re 6.2 ohm
Le 0.73mH
BL 8.24
X-max 0.5mm
Cms 0.2 mm/N
Qms 3.16
Qes 0.61
Qts 0.51
Mms 9.17g
Sd 139 cm2
Vas 5.52 liters
Magnet weight 31 oz
Speaker weight 5.5 lbs
Outside diameter 190mm
Cutout diameter 145mm
Depth 76mm
Flange thickness 8mm
Bolt hole circle diameter 171.8mm (4 holes @ 5.2mm)
Magnet diameter 124.6mm
Positive terminal 2.8mm
Negative terminal 4.8mm
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