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PD.1845-1N

Sub Bass Driver
  • New Ergonomic, Vented Cast Aluminium Chassis Offers Improved Thermal Control
  • Aluminium Demodulation Ring For Ultra-Low Distortion
  • 4.5” Split Winding Copper Clad Aluminium Voice Coil
  • Vented Long-Throw Motor System / Voice Coil Gap for Reduced Power Compression
  • Optimised Double Silicone Suspension System for Ultimate Cone Control
Klippel Verifeid

Diameter

18” / 457.2 mm

Coil Diameter

4.5” / 114.3 mm

Power Rating

1500 W (A.E.S.)

Frequency Range

30 Hz - 1 kHz

Sensitivity

98.8 dB

Xmax

16.00 mm

Bringing recent advancements in Precision Devices transducer technology to the foreground. The PD.1845-1N is a next-generation 18-inch, light weight subwoofer that provides incredible levels of power handling, high SPL output and exceptional low frequency extension; perfect for delivering powerful and accurate bass in compact reflex and horn-loaded enclosure designs.

The PD.1845-1N's vented cast-aluminium chassis and forced-air cooled, long-throw motor system houses a strong neodymium magnet and a new 37mm long, 4.5-inch diameter, four-layer, Copper-clad aluminium voice coil design on an angular split, ventilated, glass fibre bobbin. Effective thermal management in the motor system and voice coil gap decreases the energy lost to heat which allows for extreme power handling, low power compression and incredible overall audio performance.

Coupled with an optimised compliance, double silicone suspension system and triple-roll surround that provides 16mm Xmax and ultimate cone control at high excursion along with an aluminium demodulation ring to reduce inductance and provide ultra-low distortion. The PD.1845-1N exhibits 98.8dB sensitivity across its working frequency band of 30Hz - 1kHz with a rated power handling of 1500 watts AES.

£344.00 MRRP Ex. VAT

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Frequency Response Graph
Impedance GRAPH
General Specifications
Type Sub Bass Driver
Nominal Diameter 18” / 457.2 mm
Voice Coil Diameter 4.5” / 114.3 mm
Power Rating 1 2 * 1500 W (A.E.S.)
Available Impedance 4 / 8 / 16 Ohm
Sensitivity (1W/ 1m)* 98.8 dB
Frequency Range 30 Hz - 1 kHz
Peak Power (6 dB Crest Factor) 6000 W (A.E.S.)
Resonance 34.1 Hz
Voice Coil Winding Depth 37.00 mm / 1.45”
Recommended Enclosure Volume 200 Litres
Flux Density 0.92 Tesla
Magnet Material Neodymium
Magnet Gap Depth 15.0 mm / 0.59”
Former Material Glass Fibre
Dust Dome Material Solid Paper
Voice Coil Material Copper Clad Aluminium
Cone Material Paper
Suspension Material Poly Cotton
Surround Material M Roll Poly Cotton
Thiele Small Parameters
Fs 34.1 Hz
Re 4.70 Ω
Qms 10.961
Qes 0.333
Qts 0.324
Le (@ 1 kHz) 1.578 mH
Le (@10 kHz) -
Vas 179.04 Litres
Mms 231.489 g
Sd 1158.12 cm2
Cms 0.094 mm/N
BL 26.424 T/m
Xmax 16.00 mm
Vd -
Ref. Efficiency 2.65%
EBP 102.40 Hz
Dimensions & Mounting
Overall Diameter 474 mm
Width Across Flats 459 mm
Flange Height 14.5 mm
Depth (Excl. Flange) 200 mm
Magnet Diameter 150 mm
Chassis Shoulder Diameter 415 mm
Outer Bolt Circle x6 M8 on 455 mm PCD
Shipping Information
Nett Weight 10.90 kg / 24.03 lb
Shipping Weight 12.90 kg / 28.43 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 (--- to --- Hz). Program ---- Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a ---- 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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