FOSTEX SVA30
¥ 44,000 (1 unit, around 1989)
Commentary
Active super woofer with built-in amplifier.
The unit is equipped with a 30 cm cone type woofer using multi-layer cone.
The magnetic circuit is designed with a repartion-type magnetic shielding design to eliminate adverse effects on cathode ray tubes, etc.
Equipped with a low-pass filter that can switch the crossover frequency in three stages.
The enclosure has a 45 cm square design and uses a bass reflex system.
The woofer unit is mounted downward to minimize unwanted mid - and high-frequency radiation.
Both the high-level (RCA pin) terminal and the low-level (speaker terminal) terminal are equipped with a pair of input and output terminals. These terminals can be connected even when the input / output terminal of the amplifier is insufficient.
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Model Rating
| Type | Active Subwoofer |
| Method | Built-in Amplifier / 1-Way / 1-Speaker / Bass Reflex System / Floor Type Magnetic protection design |
| Units Used | For Ultra Low Band : 30 cm Cone Type |
| Amp | 60W (8 ω, 55 Hz, 5% THD) |
| Low-pass filter | 60Hz/80Hz/120Hz, 18dB/oct (3-Point Switching) |
| Frequency characteristic | 40 Hz to 150 Hz -10dB |
| Output sound pressure level | 92dB/V/m |
| Max Input | 5 v (Low Level Terminal) 50 V (high level terminal) |
| Input impedance | 47k Ω (low-level terminal) 240k Ω (high-level terminal) |
| Input sensitivity | 450 mv (Low-level terminal) 2.5 V (high level terminal) |
| Total harmonic distortion (amplifier part) | 0.1% or Less (30W, 8 Ω, 20 Hz to 120 Hz) |
| S/N ratio (amplifier section) | 62 dB or More (8 Ω, 60W) |
| Residual noise (amplifier) | 1 mv or Less (Level Control min) |
| Input / output terminal | Low-level (line) : RCA pin terminal High level (speaker output) : one touch speaker jack |
| Pwer | AC100V |
| Power consumption | 37W |
| External dimensions | Width 450x Height 450x Depth 450 mm |
| Weight | 18.5kg |
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