RCF N681 1990 - NOIR

Horn thront exit diameter mm 25,4 (1")
Mounting type Bolt-on
Nominal impedance  8 ohms
Frequency reponse Hz 500-20000
Minimum cut-off frequency Hz 1000
Power handing 100 hour IEC noise W 35
Power handing continuous program W 100
Sensitivity (1W@1m)
With H 2006 horn dB 108
With H 2009 horn dB 106
With H 3709 horn dB 108
With H 4823 horn** dB -
With H 6040 horn** dB 110
With H 9040 horn** dB 109
With H 9040 horn** dB 108
ADDITIONAL DECRIPTIVE DATA
Diaphragm Titanium
Voice coil diameter mm 44,4
Voice coil material Al flat wire
Voice coil former Kapton
Flux density Telsa 1,98
DIMENSIONS AND WEIGHT
Horn mounting - -
Screw type - -
Monting flange diameter mm 100
Hole pattern
3 holes equaly spaced on dia. mm 58
4 holes equaly spaced on dia. mm 75
4 holes equaly spaced on dia. mm -
Overall diameter mm 100
Overall depth mm 95
Net weight kg 6
Replacement diaphragm M59 Impédance 8 ohms ( 4.2 ohms mesuré en DC ) , très bon état de marche . Poids de la paire : 12 kg