Description
Two-chassis hybrid tube/FET stereo preamplifier.
Introduced
1985
Discontinued
?
Revisions
SP-11 Revised
SP-11 MKII (1987)
Options
Gold/champagne faceplate (SP11MKII ) - Taiwan only.
MSRP (US new retail)
$4,900
$4,995/$5,995 (SP-11 MKII)
Specifications
| Frequency response | High level input: ±1dB 0.2Hz to 100kHz. -3dB below 0.1Hz and above 100kHz. |
|---|---|
| Phono input: ±.2dB of RIAA 10Hz 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: 20Kohms or higher, depending on switch functions | |
| Output impedance | 250 ohms main, direct, inverted outputs. 500 ohms tape output. Recommended load 60Kohms 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. |
| Dimensions | 19" (48 cm) W x 5.25" (13.4 cm) H x 10.25" (26 cm) D (each unit). Handles extend 1 5/8" (4.1 cm) forward of panel. Interconnect cable extends 4" behind rear of chassis. |
| Weight | SP-11: Net 14 lbs. (6.4 kg); Shipping 23 lbs. (10.5 kg) |
| SP-11PS: Net 15 lbs. (6.8 kg); Shipping 23 lbs. (10.5 kg) | |
| Total: Net 29 lbs. (13.2 kg); Shipping 46 lbs. (21.0 kg) |
Reviews
Issue 40&45 (SP-11: Full Review), Issue 41 (SP-11:
Update), Issue 43 (SP-11: Special Report), Issue 47 (SP-11 Revised: Editor's Choice), Issue 50 (SP-11: Capsule, SP-11
MKII: Special Report)
Vol. 9
No. 4 (SP-11), Vol.
9 No. 7 (SP-11)Pictures
SP-11:
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SP-11 MKII:
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