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Wavecor
PR275BD01    10¾” die cast, composite cone passive radiator

 

 

 

PR275BD01 is a passive unit designed for dedicated subwoofer applications - as partner for our active subwoofer units.
Due to low mechanical losses it masters equally well low level details and extreme dynamic requirements.
For demanding sub bass applications using a passive unit is usually the only real alternative to sealed enclosures with active bass boost.
To make experimenting and individual tuning convenient and easy, PR275BD01 is delivered with three separate extra loads that are easily applied onto a threaded rod on the rear side of the cone.

FEATURES

  • Very rigid Mica/Paper composite cone to ensure piston motion even at high levels - for reduced distortion
  • Rigid die cast alu chassis with extensive venting for lower air flow speed reducing audible distortion
  • Low-loss suspension (high Qm) for better reproduction of details and dynamics
  • Conex spider for better durability under extreme conditions
  • Custom tunable by adding one or more of the three extra weights (included)
  • Delivered with foam gasket attached for hassle free mounting and secure cabinet sealing

NOMINAL SPECIFICATIONS

Specifications
Dimensions
Ordering info

PR275BD01-exchangeable-weights

Notes

  Parameter

Before burn-in

After burn-in

Unit

 

Nominal size

10.75

[inch.]

 

Effective radiating area, Sd

314

[sq.cm]

1
 

Resonance frequency (free air, no baffle), Fs
       - without additional mass
       - with additional 50 g mass
       - with additional 100 g mass
       - with additional 150 g mass
       - with additional 200 g mass
       - with additional 250 g mass
       - with additional 300 g mass
       - with additional 350 g mass

  
19.5
17.4
15.8
14.6
13.6
12.8
12.2
11.6

 

[Hz]

2

Moving mass, incl. air (free air, no baffle), Mms, without extra weights

190

[g]

1

Suspension compliance, Cms

0.35

 

[mm/N]

1

Equivalent air volume, Vas

49

 

[lit.]

1
 

Mechanical Q, Qms
       - without additional mass
       - with additional 50 g mass
       - with additional 100 g mass
       - with additional 150 g mass
       - with additional 200 g mass
       - with additional 250 g mass
       - with additional 300 g mass
       - with additional 350 g mass

  
19
21.4
23.5
25.4
27.2
28.9
30.5
32.0

 

[-]

 

Maximum cone travel, mechanical limits, Xmax

+/-25

[mm]

 

Total unit net weight excl. packaging (incl. 3 extra weights)

1.49

[kg]

Note 1

The unit is not burned in before shipping.

Note 2
 

The moving mass may be increased in 50 g steps up to a maximum of +350 g by adding one or more of the three extra weights that are included with the unit.

OUTLINE DRAWING AND NOMINAL DIMENSIONS (mm)

PR275BD01 outline drawing
PR275BD01 outline drawing

PACKAGING AND ORDERING INFORMATION

Part no. PR275BD01-01

Individual packaging (one piece per box), incl. 3 separate weights

Latest update: July 24, 2022

 

Specifications are subject to change without any further notice.
Copyright © 2006-2023 by Wavecor Ltd., China. All rights reserved.

 

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MORE INFO

PR275BD01 specificationsPDF data sheet

 

 

 

Related active subwoofer drivers:

SW275BD01/02

 

 

 

 

 

 

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