Audio Database
SP-12B
Commentary

A 30 cm double cone type full range unit with a double cone.

There are ones with specifications of 8 Ω and 16 Ω. It seems that the former period was 16 Ω and the latter period was 8 Ω.

Compatible with TweetBlock Kit BB1 and Midrange Kit BB4 (sold separately).

Model Rating
Type 30 cm Double Cone Unit
Frequency characteristic 35 Hz to 15 kHz
fo 50Hz
Crossover frequency 4.5 kHz (Mechanical)
Max Input 60W
Impedance 16 Ω (around 1970)
8 Ω (around 1972)
Sensitivity 98dB/W
Magnet weight 0.63 kg, ceramic
Baffle opening diameter 27.9cm
Enclosure Minimum Volume 100 liters
External dimensions Diameter 311x Depth 172 mm
Weight 5.2kg
Sold Separately Midrange Kit BB4 (¥ 66,000)
Tweeter Block Kit BB1 (¥ 32,500)