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Specification
Model SP9 MKIII
FREQUENCY RESPONSE:
High Level Section: ±.5d8, 5Hz to 50kHz, -3d8
points below 1 Hz and above 200kHz.
Phono: ±.3dB of RIAA, 30Hz to 40kHz.
DISTORTION: Less than .01 % at 2V RMS output.
(Typically less than .005% in midband)
GAIN: Phono input to tape output: 46d8
Phono input to main output 67d8
High level inputs to tape output: OdB
High level inputs to main output 21dB
G.D. input to main output: 9dB
INPUT IMPEDANCE: 50k ohms line inputs; 47K
phono. (Phono provisions f?r any value bel?w 47K
ohms or added input capacitance for matching cer-
tain magnetic cartridges.)
OUTPUT IMPEDANCE: 250 ohms main output; 850
ohms recorder output. Recommended load 60K
ohms and 100pF. (20K ohms minimum and 1000pF
maximum.)
MAXIMUM INPUTS: Phono, 200mV at 1 kHz
(1000mV RMS, 10kHz). High level inputs essentially
overload-proof.
RATED OUTPUTS: 2V RMS 5Hz to 50kHz, all out-
puts, 60K ohm load (main output capability is 50V
RMS output at 1 /2% THO at 1 kHz into a 1 00K ohm
load with 5V RMS high level input.)
POWER SUPPLIES: Electronically-regulated low and
high voltage supplies and electronic decoupling.
Shielded toroid transformer. Line regulation better
than .01%.
NOISE: (High Level) (1) 70uV RMS maximum resi_d-
ual unweighted wideband noise at main output with
gain control minimum (98dB below 5V RMS output).
(2) More than 1 00dB below 1 V RMS input (less than
7uV equivalent input noise).
PHONO: 0.12uV equivalent input noise, IHF weight-
ed, shorted input (78dB below 1mV input).
8
TUBE COMPLEMENT: 2-6922 dual triodes, (Hybrid
FET/Tube audio circuit, solid-state power supply)
POWER REQUIREMENTS: 100-135VAC 60Hz
(200-270VAC 50/60Hz) 55 watts. max.
DIMENSIONS: 19" (48 cm) W x 5¼" (13.4 cm) H
(standard rack panel) x 10¼" (26 cm) D. Handles ex-
tend 1 ½" (3.8 cm) forward of the front panel. Rear
chassis fittings extend
7
/a"
(2.3 cm).
WEIGHT: 12 lbs. (5.5 kg) Net; 21 lbs. (9.5 kg)
Shipping.
Specifications subject to change without notice.
©1993 Audio Research Corporation.
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