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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





Digital Series 800 - PHILIPS FB-821


Philips Digital Series 800, 3 way floor type speaker system of the conductor series 8.
The conductor series 8 is the selected model selected from the speaker systems studied and developed in the laboratory in Eindhoven in the Netherlands in the Netherlands, throws in the advanced technology and the high-class material of a Philips, and is developed.

Double-density H2 chipboard of 19mm thickness is adopted as an enclosure, and 30 mm MDF with the chipboard 3 times the density of usual is used for a baffle board.

The ISOPHASE tweeter by Philips specific technology is carried in the high region.
What printed the ribbon of unguided nature on the polyimide thin film dumped of the micra glass fiber is adopted as a diaphragm. This has gained the linear phase response and the outstanding transient response.


The twin drive scheme which is parallel and drives two 18cm cone type Woofers is adopted as low-pass. Moreover, the 10cm cone type squawker is carried in the mid range.


Specifications
Configuration: 3 ways, 4 speakers, a sealing scheme, and a Tallboy type
Using Driver Unit: 
For low-pass:  18cm cone type x2
For mid ranges:  10cm cone type
For high regions:  Ribbon type
Frequency Characteristic:  38 Hz - 20 kHz
Impedance:  8 Ω
Power Handling Capacity:  IEC 200W,  PEAK 300W
Sensitivity:  87 dB/1W/1m
Crossover Frequency: 450 / 4500 Hz
Dimensions (H x W x D):  860 x 270 x 330 mm
Weight:  19.5kg
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