Shure VA 300 - Manual (Page 2)

VA300 SPECIFICATIONS
VA300-C Console
Amplifier Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . All silicon transistor mixer/power amplifier
Power Output . . . . . . . . . . . 100 watts continuous (RMS); (to 8 ohm load, see Figure 3, Page 7)
Voltage Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 db “Mic.” Input Level (8 ohm load)
49 db “Inst.” Input Level (8 ohm load)
Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . ± 2 db 40 Hz. to 20,000 Hz. (typical)
Input Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60,000 ohms “Mic.” Input Level
120,000 ohms “Inst.” Input Level
Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5% maximum at rated output at 1 KHz.
Hum and Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 db below rated output
Speaker Load Impedance . . . . . . . . . . . . . . . . Nominal 8 ohms; operational 5.3 ohms minimum
(See Figure 3, Page 7)
Input Clipping Level . . . . . . . . . . . . . . . . . . . . . . . Greater than 300 Mv. (“Mic.” Input Level)
Greater than 1 V. (“Inst.” Input Level)
Bass Control Action . . . . . . . . . . . . . . . . . . . . . ± 13 db at 100 Hz. with respect to “flat” setting
Treble Control Action . . . . . . . . . . . . . . . . . . ± 10 db at 10,000 Hz. with respect to “flat” setting
“To Tape Recorder” Jack . . . . . Impedance 5,000 ohms; Output 19 db below speaker output;
nominal - 2 V at 50 watts to speakers, Clipping Level 4 V.
Echo-“To Input” Jack (Output To External Echo Unit) . . . . . . . . . . . . Impedance 10,000 ohms;
Output 20 db above microphone inputs with individual volumes at “10”; Clipping level 3 V.
Echo-“To Output” Jack (Input From External Echo Unit) . . . . . . . . . . Impedance 40,000 ohms;
Sensitivity 200 Mv. for rated amplifier output with “Echo Gain” Control and
“Master Volume” Control at maximum settings; Clipping level 2 V. with maximum
setting of “Echo Gain” control. Clipping level increases with reduced setting
of “Echo Gain” control.
“Reverb Switch“ Jack . . . . . . . . . . . . . . . . D.C. switching (no audio), parallels the Master Reverb
In-Out Switch. Any cable with a resistance of less then 5,000 ohms may be used.
Center Notch Frequencies of “Anti-Feedback” Filters. . . . . . . . . . . . . . 5,000 Hz.
2,200 Hz.
1,000 Hz.
155 Hz.
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