Buy Manufacturer Direct.

UK B2B Trade Portal.

Safe Payment Methods.

Manufacturer Support.


Sub Bass Driver
  • Heavy-duty cast aluminium chassis for increased rigidity
  • Power compression 2dB at rated power
  • A B/L in excess of 37 T/m
  • Double suspension system
  • Suitable for horn loaded or bass reflex designs


21" / 530 mm

Coil Diameter

6" / 152 mm

Power Rating

1000 w (A.E.S.)

Frequency Range

30 Hz - 1 kHz


98 dB


10.5 mm
SKU: PD.2150.8 Category:

Sorry, this product is out of manufacture and no longer available.

Have you seen our latest range of drivers?

Go to Products

Find Distributors and Retailers
Download Datasheet PDF
Ask a Question About the PD.2150
General Specifications
TypeSub Bass Driver
Nominal Diameter21" / 530 mm
Voice Coil Diameter6" / 152 mm
Power Rating 1 2 *1000 w (A.E.S.)
Available Impedance4 Ω/ 8 Ω/ 16 Ω
Sensitivity (1W/ 1m)*98 dB
Frequency Range30 Hz - 1 kHz
Peak Power (6 dB Crest Factor)4000 w (A.E.S.)
Resonance29.5 Hz
Voice Coil Winding Depth30 mm / 1.18"
Recommended Enclosure Volume130 - 350 Litres
Flux Density1.1 Tesla
Magnet MaterialCeramic
Magnet Gap Depth15 mm / 0.59"
Former MaterialGlass Fibre
Dust Dome MaterialPaper
Voice Coil MaterialCopper
Cone MaterialPaper
Suspension MaterialDual Fabric
Surround MaterialFabric
Thiele Small Parameters
Fs29.5 Hz
Re5.52 Ω
Le (@ 1 kHz)2.1 mh
Vas309.3 litres
Mms382.86 g
Sd1698.23 cm2
Cms76.4 µm/N
BL37.42 T/m
Xmax10.5 mm
Vd1.712 litres
Ref. Efficiency3.39%
EBP105.35 Hz
Dimensions & Mounting
Overall Diameter555 mm
Width Across Flats535 mm
Flange Height15 mm
Depth (Excl. Flange)215 mm
Magnet Diameter316 mm
Chassis Shoulder Diameter495 mm
Outer Bolt Circle6 * M8 on 526
Inner Bolt CircleN/A
Shipping Information
Nett Weight31.75 Kg / 70 lb.
Shipping Weight33.75 Kg / 74.41 lb.
*1 Power compression is the reduction of sensitivity at the specified power. Higher power ratings do not necessarily give a proportionate increase in SPL therefore the maximum SPL of the driver may significantly exceed that of other manufacturers with high power ratings.

1. AES Standard (30 to 300 Hz) Program 2000 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 1000 Watt preconditioning period.

Please note that frequency response measurements are supplied for comparison purposes only and are not a measure of the low frequency performance which may be achievable in a fully optimised system.
Frequency Response & Impedance
What people are saying about the PD.2150

Please take a moment to share your feedback with us. We love to hear your success stories and comments about our products. It can really help us, and other PD customers, on our continuing mission of creating better sound.


    Be the first to review “PD.2150”

    Your email address will not be published. Required fields are marked *

    Got a question about the PD.2150 ? Send us a message...

    1 + 5 =

    Pin It on Pinterest

    Share This