The 8¾" passive radiator PR223BD01 was designed for high performance compact subwoofer applications. Optimized for working with the active 8¾" subwoofer SW223BD01 but will function well with any suitable active subwoofer transducers.
Very rigid black aluminium cone to ensure piston motion at high levels
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)
NOMINAL SPECIFICATIONS
Notes
Parameter
Before burn-in
After burn-in
Unit
Nominal size
8¾"
[inch.]
Effective radiating area, Sd
214
[sq.cm]
1
Resonance frequency (free air, no baffle), Fs - without additional mass - with additional 25g mass - with additional 50g mass - with additional 75g mass - with additional 100 g mass - with additional 125g mass - with additional 150g mass - with additional 175g mass
20 18.6 17.5 16.6 15.8 15.1 14.5 13.9
[Hz]
2
Moving mass, incl. air (free air, no baffle), Mms, without extra weights
165
[g]
1
Suspension compliance, Cms
0.38
[mm/N]
1
Equivalent air volume, Vas
25
[lit.]
1
Mechanical Q, Qms - without additional mass - with additional 25g mass - with additional 50g mass - with additional 75g mass - with additional 100 g mass - with additional 125g mass - with additional 150g mass - with additional 175g mass
14.5 15.6 16.6 17.5 18.4 19.2 20.0 20.8
[-]
Total unit net weight excl. packaging (incl. 3 extra weights)
[kg]
Note 1
The unit is not burned in before shipping.
Note 2
The moving mass may be increased in 25 g steps up to a maximum of +175 g by adding one or more of the three extra weights that are included with the driver.
OUTLINE DRAWING AND NOMINAL DIMENSIONS (mm)
PACKAGING AND ORDERING INFORMATION
Part no. PR223BD01-01
Individual packaging (one piece per box), incl. 3 separate weights
