CYBER 211 MONO BLOCKS THEORY OF OPERATION

The Cyber-211 is a single-ended class A mono power amplifier. It uses no global feedback. The 5687 is a high mu dual triode, and acts as one tube with drive stage. AC voltage applied to the input goes first to the E88CC and then to the grid of the 5687. The 5687 provides voltage gain and drives the 211/845 output tube. The 211/845 is transformer-coupled to the load. (In this case, the speaker.)

TECHNICAL SPECIFICATION FOR 211 OUTPUT TUBE VERSION:

CONTROL FUNCTIONS: Power On/Off POWER OUTPUT: 16 watt, RMS 1kHz
POWER REQUIREMENTS: 100 VAC¡À10% TOTAL HARMONIC DISTORTION: less than 1% ( 10watt, 1kHz ) FREQUENCY RESPONSE: 5Hz - 47kHz ( -3dB) INPUT SENSITIVITY: 0.6V
INPUT IMPEDANCE: 100k ohms
OUTPUT: 4, 8 ohms. User selectable.
SIGNAL/NOISE: 90dB
CONSUMPTION: 150 watt x 2
INPUT INTERFACES: 1 group ( RCA )
VACUUM TUBE: NOS E88CC x 2, NOS 5687 x 2, 211 x 2
DIMENSIONS: 420 (L) x185 (W) x330(H)mm x 2
EIGHT: 30kg x 2 ( packed )


Quest For Sound
2307-R Bristol Pike
Bensalem Pa 19020
215-953-9099

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