• Markaudio Alpair-12PW 8” Paper Woofer
  • Markaudio Alpair-12PW 8” Paper Woofer
  • Markaudio Alpair-12PW 8” Paper Woofer

Markaudio Alpair-12PW 8” Paper Woofer

The Alpair 12PW is a audiophile grade paper and glass strand reinforced coned bass-mid driver. Along with its full-range sister drivers, 6P,10P and 12P, the Alpair 12PW is designed for the serious music listener. The 12PW’s relatively flat response is des
Article number:
Alpair-12PW
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The Alpair 12PW is a audiophile grade paper and glass strand reinforced coned bass-mid driver. Along with its full-range sister drivers, 6P,10P and 12P, the Alpair 12PW is designed for the serious music listener. The 12PW’s relatively flat response is designed to deliver a neutral sound. The mid-high range gradually falls away above 10kHz.

 

Highlights

  • Gradual roll-off @10kHz
  • Lightweight paper cone
  • Longthrow suspension
  • Flat response

 

Product Details

Markaudio Alpair-12PW 8” Paper Woofer

 

The Alpair 12PW is a audiophile grade paper and glass strand reinforced coned bass-mid driver. Along with its full-range sister drivers, 6P,10P and 12P, the Alpair 12PW is designed for the serious music listener. The 12PW’s relatively flat response is designed to deliver a neutral sound. The mid-high range gradually falls away above 10kHz.

 

The development of this driver follows its full-range sister unit, the Alpair 12P. Both drivers are Semi-Free-To-Air designs, relying solely on their rear suspensions for mechanical operation. The Alpair 12PW has a reinforced rear suspension and a new coil to enable handling of typical audiophile low frequency loads (not constant low frequency loads).

 

The 12PW has a long mechanical throw, limited by its arrestor to 8.5mm (1 way). This driver is a low-mass design, its power-train has a moving mass of 11.7 grams yet delivers a Vas of 45 litres with a total Q of 0.39, making it ideal for larger scale purist box designs.

 

An all-new computer controlled bonding process deployed on this driver, delivering ultra tight tolerances in critical parts of the 12PW’s power-train assembly.

 

The 12PW is primarily designed to be partnered with the Alpair 7P yet will also be a excellent partner for many tweeters. The marriage between 7P and 12PW promises much in the way of deep rich bass and fine mid-high range detail.

 

PRODUCT SPECIFICATIONS

Nominal Diameter

8"

Power Handling (RMS)

40 Watts

Power Handling (max)

- Watts

Impedance

8 ohms

Frequency Response

30 to 12,000 Hz

Sensitivity

87.5 dB 2.83V/1m

Voice Coil Diameter

1"

 

THIELE-SMALL PARAMETERS

Resonant Frequency (Fs)

73.4 Hz

DC Resistance (Re)

5.4 ohms

Voice Coil Inductance (Le)

0.49 mH

Mechanical Q (Qms)

1.44

Electromagnetic Q (Qes)

0.54

Total Q (Qts)

0.39

Compliance Equivalent Volume (Vas)

1.59 ft.³

Mechanical Compliance of Suspension (Cms)

-

BL Product (BL)

5.31 Tm

Diaphragm Mass Inc. Airload (Mms)

11.69 g

Maximum Linear Excursion (Xmax)

8.5 mm

Surface Area of Cone (Sd)

147.4 cm²

 

MATERIALS OF CONSTRUCTION

Cone Material

Paper

Surround Material

Rubber

Basket / Frame Material

Glass-Fibre

Magnet Material

Ferrite

 

MOUNTING INFORMATION

Overall Outside Diameter

8.15"

Baffle Cutout Diameter

6.61"

Depth

3.78"

Bolt Circle Diameter

7.32"

# Mounting Holes

4

 

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