Electro-Voice 30W
Release date unknown
¥ 145,900 (1 unit, around 1972)
¥ 198,000 (1 unit, around late 1970 s)
Commentary
76 cm super large woofer unit.
By using a magnet assembly that accounts for more than 2 / 3 of the total weight, a high input resistant edge wound copper ribbon voice coil, and a foamed polystyrene cone, excellent low-frequency playback is achieved.
This unit is installed in the Patrician 800, a typical Electrovoice speaker system.
Model Rating
| Type | 76 cm cone type woofer unit |
| Frequency characteristic | 25 Hz to 1 kHz ± 6 dB 15 Hz ~ 300 Hz (published in 60's ~ 72's catalog) |
| Crossover frequency | 200 Hz or less 100 Hz (listed in 1972 catalog) |
| fo | 16Hz 15 hz (listed in 1972 catalog) |
| Maximum allowable input | 60W (long-term average) 600W (peak) 200W (peak, 1972 catalog) |
| Impedance | 8 Ω / 16 Ω |
| DC resistance | 4 Ω |
| Output sound pressure level | 103dB/W (1972 catalog) 105dB/W/m (According to the catalog in the latter half of 1970's) |
| Magnet | 4.3 kg, ceramic |
| Baffle opening diameter | 71.8cm |
| External dimensions | Diameter 756x Depth 340 mm |
| Weight | 15.4kg |