SANSUI Monitor 2120
¥ 100,000 (1 unit, around 1974)
Commentary
Speaker system with JBL professional units.
The unit is equipped with Model2120 which is a 25 cm cone type full range unit.
The enclosure is specially developed for the Model2120 and uses a bass reflex system.
The front baffle is made of Scandinavian cherry wood plywood, which has good plate vibration, to prevent unnecessary natural vibration. In addition, a reinforcing rod is used between the front and rear baffles. The connection between the side plate and top plate is made with a hollow frame structure and a spline structure. In addition, by using angle block, the structure is strong and durable enough to be used for many years.
The exterior is finished with walnut oil. In addition, the front grill uses handmade Shippo kumiko made of natural cypress wood for an elegant finish.
It is a 2-way system with an enclosure structure that can be easily upgraded. It can be converted into a 2-way speaker system by combining with JBL Pro Tweeter Model 2405 and Network Model 3105.
In addition, remove the screen for tweeter of the front baffle and the screen for network of the rear baffle before installation.
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Model Rating
| Method | 1-Way, 1-Speaker, Basref System, Bookshelf Type |
| Unit | For all bands : 25 cm cone (JBL Model2120) |
| Frequency characteristic | 40 Hz to 10 kHz |
| Maximum allowable input | 60W (continuous program) |
| Impedance | 8 Ω |
| Output sound pressure level | 99dB(New JIS) |
| Material | Rigid homogen |
| Finish | Walnut oil finish |
| External dimensions | Width 393x Height 645x Depth 385 mm |
| Weight | 23.5kg 22.5 kg (listed in separate catalog) |
| JBL Model2120 Specifications | |
| Aperture | 25cm |
| Voice coil | 76 mm Diameter Edge Rolled Aluminum Ribbon |
| Unit weight | 3.5kg |
| Sold separately : JBL Model2405 specifications | |
| Impedance | 16 Ω |
| Rated input | 20W (continuous program) |
| Frequency characteristic | 6.5 kHz to 21.5 kHz ± 3 dB |
| Voice coil | 44 mm Diameter |
| Directional property | (horizontal x vertical), 30 ° x90 ° (16 kHz) |
| Weight | 2.0kg |
| Sold separately : JBL Model3105 specifications | |
| Crossover frequency | 7kHz |
| Rated input | 50W |
| Impedance | Woofer : 12 Ω ~ 16 Ω Tweeter : 12 Ω ~ 16 Ω |
| High-pass attenuation | Continuously variable |