FREQUENCY RESPONSE
High level input: ±1dB 0.2Hz to 100kHz. -3dB below 0.1Hz and above 200kHz. Phono input: ±.2dB of RIAA 20Hz to 40kHz. ±1dB of RIAA 1.0Hz to 100kHz.
DISTORTION (THD)
Harmonic distortion: Less than .005% at 2V RMS output, 5Hz to 20kHz (Typically less than .001% at midband, phono or line input). Intermodulation distortion: Less than .003% at 2V RMS output
NOISE & HUM
IHF weighted, shorted input: Output (Gain down): 6µV (110dB below rated output). Input (High level): 3µV equivalent input (110dB below 1V input). Phono: 0.15µV equivalent input (76dB below 1mV input)
GAIN
At 1kHz, bypass mode: Phono input to tape output: 46dB (0.2V output from 1mV input). Phono input to main output: 75dB (0.175mV input for 1V output). High level input to main output: 29dB (36mV input for 1V output).
INPUT IMPEDANCE
Phono: Front panel selectable 47K, 100, 30, 10, 3 ohms. Phono input capacitance: 150 pF at 10kHz. High level: 20K ohms or higher, depending on switch functions
OUTPUT IMPEDANCE
250 ohms main, direct, inverted outputs. 500 ohms tape output. Recommended load 60K ohms and 100pF (20Kohms minimum, 1000pF maximum)
OUTPUT POLARITY
Tape outputs, direct output: Non-inverting. Invert output: Inverting. Main outputs (2): Selectable non-inverting or inverting. All outputs may be used simultaneously.
MAXIMUM INPUTS
Phono: 350 mV RMS at 1kHz, 1200 mV RMS at 10kHz (0.1 second maximum duration, 6dB less if continuous). High level: 25V RMS.
RATED OUTPUTS
2V RMS 1Hz to 100kHz main, direct, inverted outputs. (Maximum 80V RMS at 0.2% THD at 1kHz into 60kOhm load with 2.85V RMS high level input).
POWER SUPPLIES
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TUBE COMPLEMENT
(6) 6DJ8/ECC88
POWER REQUIREMENTS
95-135VAC 60Hz, 190-270VAC 50/60Hz, 130 Watts maximum
250 ohms main, direct, inverted outputs. 500 ohms tape output. Recommended load 60K ohms and 100pF (20Kohms minimum, 1000pF maximum)
OUTPUT POLARITY
Tape outputs, direct output: Non-inverting. Invert output: Inverting. Main outputs (2): Selectable non-inverting or inverting. All outputs may be used simultaneously.
MAXIMUM INPUTS
Phono: 350 mV RMS at 1kHz, 1200 mV RMS at 10kHz (0.1 second maximum duration, 6dB less if continuous). High level: 25V RMS.
RATED OUTPUTS
2V RMS 1Hz to 100kHz main, direct, inverted outputs. (Maximum 80V RMS at 0.2% THD at 1kHz into 60kOhm load with 2.85V RMS high level input).
POWER SUPPLIES
–
TUBE COMPLEMENT
(6) 6DJ8/ECC88
POWER REQUIREMENTS
95-135VAC 60Hz, 190-270VAC 50/60Hz, 130 Watts maximum
OTHER
Filter: 25Hz Hi-pass phono subsonic 6dB/octave rolloff (to eliminate ringing) with transition to 12dB/octave at 10Hz. Front panel switchable phono only. Controls (6): Gain, Level (to set gain range), Balance, Mode, Input, Impedance. Switches (8): Tape monitor, Copy, Tape 1/2, Tape 1to2 / 2to1, Mute, Invert phase, Bypass, Filter.
DIMENSIONS
(Each chassis, EIA Rack panel mounting) 19″ (48 cm) W x 5 ¼” (13.4 cm) H x 10 ¼” (26 cm) D. Handles extend 1 ⅝” (4.1 cm) forward of panel. Interconnect cable extends 4″ behind rear of chassis.
WEIGHT
SP-11: 14 lbs. (6.4 kg) Net, 23 lbs. (10.5 kg) Shipping. SP-11PS: 15 lbs. (6.8 kg) Net, 23 lbs. (10.5 kg) Shipping. Total: 29 lbs. (13.2 kg) Net, 46 lbs. (21.0 kg) Shipping.
