Im calculating the box volume and port size for the Scan-Speak 7" Revelator 8 ohm 18W/8831G00 or the 18W/8531G00, and Im coming up with a Box volume of 46L, F3 29.8 Hz, ported with 5.08cm x 10.3cm. At 21 Liters, Im getting an F3 of 42.7Hz with a port 5.08cm x 15.4cm. Can a 6.5" really go this low? I think I would be happy with an F3 of 42 Hz. This seems to be a very big volume for a 6.5". Am I doing something wrong? can I go smaller?
Based on Madisound.com "The 18W/8531G should have an F3 of about 50Hz sealed and 35Hz vented".
TECHNICAL DATA:
Sensitivity 2.83V/1M 87dB
Free air resonance Fs 27.5 Hz
DC resistance 5.8 ohm
V.C. inductance 0.35 mH
Power 70W
Effective cone area 150 cm2
V.C. diameter 38 mm
VC height -
Air gap -
Lin. & max. excursion ±6.5 / ±11 mm
Air gap flux density -
Force factor BL Product 6.7 Tm
Moving mass incl. air 15.5 g
Net weight 1.75 kg
Vas 61 ltrs
Qms 5.0
Qes 0.39
Qts 0.36
What do you guys think?
Based on Madisound.com "The 18W/8531G should have an F3 of about 50Hz sealed and 35Hz vented".
TECHNICAL DATA:
Sensitivity 2.83V/1M 87dB
Free air resonance Fs 27.5 Hz
DC resistance 5.8 ohm
V.C. inductance 0.35 mH
Power 70W
Effective cone area 150 cm2
V.C. diameter 38 mm
VC height -
Air gap -
Lin. & max. excursion ±6.5 / ±11 mm
Air gap flux density -
Force factor BL Product 6.7 Tm
Moving mass incl. air 15.5 g
Net weight 1.75 kg
Vas 61 ltrs
Qms 5.0
Qes 0.39
Qts 0.36
What do you guys think?
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