Montarbo W18A Owner's Manual download pdf (Page 12)

W18A

bi-amped, active loudspeaker system

Speciﬁcations

APPENDIX

Speaker system 2-way bass reﬂex

• Components: custom designed to Montarbo specs

- bass frequencies 18" high efﬁciency woofer

Nominal diameter 18"

Frequancy range 32÷2000Hz

Power capacity 600W

Sensitivity 101dB

Rated impedance 4 Ohms

Net weight 13,5 Kg

TThiele & Small Parameters

fs 32Hz

Re 2,8 Ohms

Qms 5,45

Qes 0,31

Qts 0,293

Vas 0,376m

ho 3,85%

B.l 19,8T/m

SD 0,104m

Xmax 0,0099m

Pe 600W r.m.s.

- mid/high frequencies 2" driver coupled with a constant

directivity horn

Exponential horn

Nominal coverage (H x V) 90° x 60°

Cutoff frequency 500 Hz

Throat diameter 50 mm

Material aluminium fusion

Dimensions 435x270x230 mm

Net weight 3 Kg

Driver

Throat diameter 50 mm

Nominal impedance 8 ohms

D.C resistance 6,2 ohms

Power capacity 180 Watt RMS

Sensitivity 108 dB

Frequency range 500 ÷ 20kHz

Voice coil diameter 74,5 mm

winding material aluminum ﬂat wire

former material kapton

Dome material titanium

Inductance 0,17 mH

Flux density 1,95 T

Overall diameter 165 mm

Depth 70mm

Net weight 4,8 kg

• Impedance 4 ohm (bass) / 8 ohm (mid/high)

• Frequency response 40Hz ÷ 20kHz

- bass: 40Hz ÷ 800Hz

- mid/high: 800Hz ÷ 20kHz

• Sensitivity (1W / 1m) 101 dB SPL

• Max SPL 131 dB

Built-in electronic crossover:

• crossover frequency 800Hz

• slope 24dB/Oct

Built-in power ampliﬁers 2 MOSFET (class AB);

2 independent processors

• Max. output power 850 W continuous / 1200 W peak

- bass 600 W continuous (4 ohms @ 0,1%THD)

850 W peak

- mid-high 250 W continuous (8 ohms @ 0,1%THD)

350 W peak

Forced cooling, thermostatically

controlled low turbolence fan

• Frequency response 35Hz ÷ 25kHz +0/-1dB

• Input impedance 10KOhms (balanced)

• Input sensitivity 0dB (775 mV)

• Noise referred to input - 108dB (A weighted)

• Power supply 220 V.A.C. 50÷60 Hz / Fuse: F 6,3AL

on request 117 V.A.C. 50÷60Hz / Fuse: F10AL

Connections Balanced male (OUT) and female (IN) XLR

inputs wired in parallel

Construction and ﬁnish Phenyl-glued multiply birch

Polyurethane paint

Dimensions (w x h x d) 54 x 87 x 45 cm

Weight 55,7 Kg

Block diagram

1 2 ... 7 8 9 10 11 12 13 14 15

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Montarbo W18A Owner's Manual Page 12

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