CN1845MD
18-inch cast aluminium chassis, neodymium magnet LF driver
- Long excursion: 13mm mathematical Xmax
- Laminated dual suspension
- Balanced Airflow Venting provides enhanced cooling
Specifications
3400W
Continuous power rating
97dB
Sensitivity
4.5in
Voice coil diameter
Nominal diameter
457mm / 18in
Power rating
1750W
Continuous power rating
3400W
Rated impedance
8Ω
Sensitivity
97dB
Frequency range
30-2500Hz
Chassis type
Cast aluminium
Magnet type
Neodymium
Voice coil diameter
115mm / 4.5in
Voice coil material
Copper clad aluminium
Former material
Glass fibre
Cone material
Glass loaded paper (weather-resistant)
Surround material
Cloth-sealed
Suspension
Dual-laminated
Gap height (Hg)
12mm / 0.49in
VC winding height (Hvc)
38mm / 1.5in
Parameters
Sd
1134.12cm2 / 175.79in2
Fs
35.00Hz
Mms
230g / 8.13oz
Qms
3.75
Qes
0.307
Qts
0.284
Re
5.10Ω
Vas
163.30l / 5.63ft3
BI
29.00Tm
Cms
0.09mm/N
Rms
13.49kg/s
Le (at 1kHz)
2.40mH
Xmax
13mm / 0.51in
Mounting Information
Overall diameter
460mm / 18.1in
Overall depth
235mm / 9.25in
Cut-out diameter
414mm / 16.3in
Mounting hole dimensions
12x7mm / 0.47x0.27in
Number of mounting holes
8
Mounting hole PCD
433-441mm / 17.04-17.36in
Unit weight
10.5kg / 23.2lb
Packed Dimensions & Weight
Single pack size W x D x H
500mm x 500mm x 300mm / 19.7in x 19.7in x 11.8in
Single pack weight
12kg / 26.4lb
Frequency Response and Impedance Curves
Topmost curve: Frequency response on axis | Secondary curve: Frequency response at 45° off axis
Power Rating: Tested for two hours using a continuous, band-limited pink noise signal as per AES standard. Power calculated on minimum impedance. Loudspeaker tested in free air.
Continuous Power Rating is defined as 3dB greater than the AES rating.
Sensitivity measured on axis at 1W, 1m in 2Π anechoic environment.
Xmax is derived from: (voice coil winding width-gap depth)/2.
Small Signal Parameters are measured after unit subjected to pre-conditioning signal.