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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





Krell FPB-300C power amplifier


Full Power Balanced amplifirs can be configurated to accommodate any sophisticated music or home theater system and can be operated by an optional remote control through the remote control of other Krell components.
The Full Power balanced series of amplifiersconsist of three stereo amplifiers, the FPB 200C; 300C; 600C and three nonaural amplifiers , the FPB 250Mc; 350Mc; 650Mc. Installation, connection, and operation of all amplifiers in the Full Power balanced series are identical; however, a pair of Full Power Balanced Monaural amplifier are required for stereo operation.

Krell Current Audio Signal Transmission  - CAST
A propietary Krell circuit technology for coneccting analog components, in which the audio waveform is transmitted between components in the current rather than voltage domain. The speed and bandwidth provided by Krell CAST yields accurate, realistic music reproduction. Krell components connected via CAST perform as if they are all part of a single circuit.

A symmetrical input or output circuit that has equal impedance from both input terminals to a common ground reference point. The industry standard for profeassional and sound recording installations, balanced connections have 6 dB more gain than single-ended connections and allow the use of long interconnected cables. Balanced connections are completely immune to induced noise from the system or the environment.

A two-wire input or output circuit. Use care when using single-ended connections as the ground connection is made last and broken first. Turn the system off prior to making or breaking single-ended connections. Single-ended connections are not recommended for connections requiring long cable runs.

Specifications
Output Power (Each Channel Driven):
300 W at 8 Ω
600 W at 4 Ω
1200 W at 2 Ω
Output Volyage: 
Peak to Peak :  170 V
RMS :  60 V
Frequency Response:  20 Hz -20 kHz (+0 dB, -0,5 dB)
Signal-to-Noise Ratio (A weighted):  117 dB
Gain:  26,4 dB
Total Harmonic Distortion (All Balanced, Unweighted): 
At 1 kHz :  less than 0,02%
At 20 kHz :  less than 0,15%
Input Sensitivity/Impedance:  2,35 V (RMS)/ 100 k Ω
Inputs: 
1 pair balanced via XLR connectors
1 pair CAST via 4-pin bayonet connectors
Outputs Speaker Binding Posts:  4 pair (upper left and right, lower left and right)
Power Consumption: 3000 W (Max); 350 W (Idle), 75 W (Stand by)
Dimensions (W x H x D):  483 x 262 x 500 mm (19,0 " x 10,3" x 19,7")
Weight (unit only):  50 kg (110 lb)
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