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PD.2155-1N

Sub Bass Driver
  • New Ergonomic, Vented Cast Aluminium Chassis Offers Improved Thermal Control
  • 5.5” Inside/ Outside Windings, Copper, Vented Voice Coil
  • Vented Voice Coil And Coil Gap Reduces Power Compression Effects
  • Double Silicone Spider With Optimised Compliance
  • Suitable For Hybrid Horn-Loaded Designs
Klippel Verifeid

Diameter

21” / 530 mm

Coil Diameter

5.5” / 138.7 mm

Power Rating

1500 W (A.E.S.)

Frequency Range

30 Hz - 300 Hz

Sensitivity

98 dB

Xmax

11.00 mm

The PD.2155-1N is an extremely low distortion and highly dynamic driver. Suitable for hybrid horn-loaded cabinet designs, the unit produces 98 dB sensitivity over it’s working band and is capable of handling 3000 W continuous program power.
Featuring a neodymium magnetic assembly generating very high force factor of 30 T/m and linear excursion. The design also incorporates an optimised suspension system and ribbed paper cone that provides exceptional mechanical stability and control. Providing the benefit of extremely low distortion and 60mm peak-to-peak excursion before damage.

£518.84 MRRP Ex. VAT

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Frequency Response Graph
Impedance GRAPH
General Specifications
Type Sub Bass Driver
Nominal Diameter 21” / 530 mm
Voice Coil Diameter 5.5” / 138.7 mm
Power Rating 1 2 * 1500 W (A.E.S.)
Available Impedance 8 Ohm
Sensitivity (1W/ 1m)* 98 dB
Frequency Range 30 Hz - 300 Hz
Peak Power (6 dB Crest Factor) 6000 W (A.E.S.)
Resonance 33 Hz
Voice Coil Winding Depth 26.00 mm / 1.02”
Recommended Enclosure Volume 150 - 200 Litres
Flux Density 1.45 Tesla
Magnet Material Neodymium
Magnet Gap Depth 13.0 mm / 0.51”
Former Material Glass Fibre
Dust Dome Material Solid Paper
Voice Coil Material Copper
Cone Material Paper
Suspension Material Fabric
Surround Material Fabric
Thiele Small Parameters
Fs 33 Hz
Re 5.1 Ω
Qms 9.8
Qes 0.374
Qts 0.36
Le (@ 1 kHz) 2.4 mH
Le (@10 kHz) -
Vas 241 Litres
Mms 320 g
Sd 1520 cm2
Cms 73.4 μm/N
BL 30 T/m
Xmax 11.00 mm
Vd 1.67 Litres
Ref. Efficiency 2.2%
EBP 88.24 Hz
Dimensions & Mounting
Overall Diameter 550 mm
Width Across Flats 532 mm
Flange Height 14 mm
Depth (Excl. Flange) 214 mm
Magnet Diameter 184 mm
Chassis Shoulder Diameter 492 mm
Outer Bolt Circle x6 M8 on 528 mm PCD
Shipping Information
Nett Weight 12.50 kg / 27.56 lb
Shipping Weight 14.5 kg / 29.56 lb
Notes
* 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 (20 to 200 Hz). Program 1500 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 1000 Watt preconditioning period verified by Klippel LSI measurement.
4. 2.83V. Half space response measured in a 975 Litre sealed enclosure.

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.
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