What is stereo?

There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.

H.H. Scott '59

Technics SB-E100 loudspeakers

High Efficiency, High Input Resisting 30 cm Woofer
In order to make the most of the horn type speaker system, the wofer is required to be highly efficient and to have a frequency characteristic to go smoothly with the mif-range. In this respect, the system uses Canadian coniferous pulp and cones with liner elements combined, thus assuring a high efficiency of 95 dB/W/1m. Also, to improve the linearity coping with a large input, well ventilated high compliance dampers and non-directional urethane edges are employed. Furthermore, polyester insulator and polyamide layers are used for the voice coils, and extra-high heat resisting resin film is used for the bobbins so that the system is able to withstand continuous since waves of as high  as 100 Watts (DIN RMS).

Wide-directional Radial Horn Mid-range
Frequency characteristics with wide-band and excellent directivity are obtained with a radial horn widening at 150 deg. From aluminum die-cast horn throat and newly developed shell type equalizer (mid-range). The driver section is made of extra-thin aluminum alloy of 35ф, 30 µm thick, and the edge, provided with slits, employes perforated pole pieces to improve the low-range characteristic, and is high input resisting with heat radiating aluminum bobbin of µm, CCAW (copper coated aluminum wire), and heat resisting voice coils.

Wide-directional Radial Horn Tweeter
This wide-directional radial horn, widening at 150 deg., is of high precision solid type made of aluminum diecast. The driver section consists of metalized polyester film vibrating reeds and employs a powerful magnetic circuit using a large aluminum magnet, and is high input resisting with use of heat resisting voice coils.

Linear Phase Network
Linear phase characteristics are obtained by a dividing network combining 12 dB/oct and inductive M types, thus making reliable transfer of waves possible. Also, low-distortion filament cores are employed for choke coils.

Control Tower
It is equiped with a thermal relay protection circuit in oreder to protect the mid-range and tweeter from excess input or abnormal signals. Also, to use it as a multiamp system, it is provided with multi-amp input terminal along with a multi-amp switching connector. Besides these functions, dividing network, level control and input terminal are concentrated at the control tower which also serves to secure drivers of the mid-range and tweeter, thus improving the controllability.

Power Handling Capacity
The power handling capacity of this speaker system is 150 watts (music), and 100 watts DIN (RMS).
Speaker Protection Circuit
This system is equipped with a speaker protection circuit to protect the speaker from excess input or abnormal signals. If excess input is applied to the speaker, it will be automatically cut off by the protection circuit.

Multi-Amp System
The impedance of each unit woofer, midrange and tweeter is 6 Ω . Therefore, make sure that the load impedance of the amp used ranges from 4 Ω  to 16 Ω
When the multi-amp switching connector is set to "multi amp system", the network, level control and protection circuit of this system are disconnected. The sound volume of each unit can be adjusted by turning the volume knob of each amp.
It is recommended to use the system with crossover frequencies between speakers  as follows:
Woofer - Midrange :  1,2 kHz - 2 kHz
Midrange - Tweeter :  5 kHz - 10 kHz
In order to protect the speaker unit against low-range noise from the amp, connect a bipolar condenser of about 68 µF between amp and speaker, and about 10 µF to tweeter respectively in series.

Type:  3-way, 3-speaker system
Woofer :  300 mm (12") cone type
Midrange :  Horn type
Tweeter :  Horn type
Impedance:  6 Ω
Input Power:
Music :  150 W
DIN :  100 W (RMS)
Output Sound-Pressure Level:  95 dB/W /1m
Crossover Frequency:  1500 Hz, 6500 Hz
Frequency Range:  37 - 22,000 Hz
Dimensions (W x H x D):  525 x 846 x 424 mm (20-5/8" x 33-1/4" x 16-5/8")
Weight:  29 kg (63,9 lbs)

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