Technics SB-X5
¥ 49,500 (1 unit, released in November 1977)
Commentary
A bookshelf speaker system with linear phase design.
A 25 cm cone woofer capable of playback up to 5 kHz is installed in the low frequency range.
This unit uses a heat-resistant polyamide adhesive layer and a polyester insulating layer for the voice coil to achieve a heat resistant temperature of 180 ° C to 200 ° C and improve input resistance. Also, an aluminum die-cast frame is used for the frame.
The mid-range has a 9 cm cone type mid-range.
Linearity at large amplitude is improved by considering the shape and material of the edge and the material of the damper, and input resistance is improved by adopting aluminum bobbin and heat-resistant voice coil.
A die-cast frame is used for the frame.
A 2.5 cm dome type tweeter is installed in the high range.
The diaphragm of this unit uses an ultra-thin 15 μ - thick titanium diaphragm to suppress peaks, smooth high-frequency characteristics, and obtain wide bandwidth required for linear phase. This diaphragm also has heat radiation effect, and combined with aluminum bobbin with good heat conduction and heat-resistant polyamide adhesive layer and polyester insulating layer, heat resistant temperature of 180 ° C to 200 ° C is obtained, and high input resistance is realized.
The mid-range and tweeters are mounted with a straight (conical) horn backing away from the baffle surface.
Compared with the exponential horn, the shape of this horn has a more gradual low-frequency characteristic, making it possible to realize a bookshelf type linear phase speaker system. The horn also has a higher low-frequency characteristic reduces distortion by cutting the low-frequency at a higher frequency.
In addition, the front surface of the tweeter is deadened with neoprene rubber to flatten the frequency characteristics.
The enclosure uses a linear-phase design with a front-back and front-back arrangement of the woofer and tweeter to align the sound center in a straight line when viewed from the side. In addition, by adjusting the time that the music signal passes through the SB-X5 through the network, the time lag that the emitted sound waves reach the ear is kept constant.
The exterior has a cherry wood finish and the front baffle has a matte silver metallic finish.
Also, the net uses a dark brown color.
The mid-range and tweeter are equipped with a continuously variable attenuator.
The tweeter is also equipped with a thermal relay to protect the voice coil from excessive input.
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Model Rating
| Method | 3-Way, 3-Speaker, Bass reflex system, Bookshelf Type |
| Units Used | For low band : 25 cm cone type For Medium Range : 9 cm cone type For high-pass : 2.5 cm dome type |
| Playback frequency range | 39 Hz to 20 kHz -10dB |
| Impedance | 6 Ω |
| Output sound pressure level | 89dB/W/m |
| Allowable input | 75W (peak input) 50W(DIN RMS) |
| Crossover frequency | 1 kHz, 4.2 kHz |
| External dimensions | Width 340x Height 610x Depth 285 mm Net Attached : Depth 326 mm |
| Weight | 19 kg (With Net) |
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