SANSUI SAX-1000
¥ 78,000 (around 1965)
Commentary
A high-grade stereo comprehensive amplifier that combines a high-output low-distortion audio section with a high-performance tuner.
GT tube 7591 is adopted for the power amplifier section to constitute a push-pull circuit of fixed bias system.
Combined with an ultra-wide-band output transformer, a music power of 96W and an effective output of 38/38W are achieved at a low distortion rate of 1%.
The FM tuner uses a cascode system with two stage New Vista and three stage variable capacitor.
It also incorporates a double limiter that eliminates noise regardless of the strong or weak electric field as a noise limiter, and a muting switch (squelch circuit) that automatically separates the low-frequency amplification stage when the input voltage of the receiver drops and eliminates inter-station noise that occurs during channel selection.
In addition, it is equipped with an AFC circuit for enjoying long-term stable FM and an SCA filter for shutting out interference of SCA broadcasting.
The preamplifier section consists of four transistors to reduce hum and noise.
Equipped with 8 input systems and Route 3 terminals, it can be used for various applications.
In particular, two Phono terminals are provided for easy use of the MC type cartridge.
Equipped with MT9P type socket, MC type cartridge can be used by inserting SANSUI matching transformers A-603 and A-604.
Switching matrix method is adopted for FM multi-circuit.
The tuner section has RF1-stage amplification.
Ferrite antenna is built-in.
With a center channel output terminal, it is compatible with 3D stereo.
The CR type is used for tone control.
It is also equipped with functions such as loudness, high-cut and low-cut filters, and presence.
Model Rating
Type | Integrated amplifier |
<Audio section> | |
Music Power (IHFM) | 96W |
Effective power | 38W/38W (when using one channel) 33W + 33W (when both channels are used) |
Harmonic distortion factor | 1% (at rated output) |
Power Band Wiz (IHFM) | 35 Hz to 15 kHz |
Frequency characteristic | Aux : 30 Hz to 20 kHz ± 1.5 dB (at normal output) |
Channel separation | Phono:55dB |
Hum and Noise (IHFM) | Aux : -90dB at rated output Phono : -70dB at rated output |
Residual Noise (Tone Control Flat) | 1 mv (8 Ω) |
Load impedance | 8 Ω, 16 Ω |
Damping factor | 9.5(1kHz) |
Input sensitivity (input required for effective output) | Phono 1 : 2 mV (0.06 mV when using Sansui input transformer A-604) Phono 2:2mV Tape head2mV Mic:2.3mV Aux 1:65mV Aux2 : 110 mV Tape mon (Pin) : 65mV/200k Ω Tape mon (Din) : 65mV/100k Ω |
Center channel output | 7.5V/1k Ω (at rated output) |
Equalizer characteristics | Phono MAG:RIAA Tape head:NAB(19cm/sec) |
Tone control | Bass : + 10 dB ~ -15dB (50 Hz) Treble : + 11 dB ~ -12dB (10 kHz) |
Loudness control | + 7.5 dB (50 Hz), + 7.5 dB (10 kHz) |
High-cut filter | 10 kHz, -11dB/oct. |
Low-cut filter | 50 Hz, -10dB/oct. |
Presence | 250 Hz (turnover frequency) |
Other Functions | Tape monitor Headphone jack |
FM Tuner Section | |
Receiving frequency | 76 MHz to 90 MHz |
Sensitivity | 1.8 μ V (S/N20dB, Mod30%) 2 μ V (S/N30dB, Mod30%) |
IF bandwidth | 230kHz(-3dB) |
Image ratio | 52dB(S/N50dB) |
Total harmonic distortion factor | 0.8% (60 dB input, 30% Mod) |
Frequency characteristic | 30 Hz to 15 kHz ± 1 dB |
<FM Multi Section> | |
Separation | 38 dB (1 kHz, 60 dB input) |
Total harmonic distortion factor | 1.2% (60 dB input, 30% Mod) |
Frequency characteristic | 50 Hz to 15 kHz ± 1.5 dB |
FM tuner unit included function | FM-AFC Muting Stereo indicator Tuning meter SCA Filters |
<AM Tuner Section> | |
Receiving frequency | 535 kHz to 1,605 kHz |
Sensitivity | 7 μ V (S/N20dB, Mod30%) 3 μ V (S/N10dB, Mod30%) |
Image ratio | 65dB(1,000kHz) |
Selectivity | Narrow : 30 dB (± 10 kHz) Wide : 24 dB (± 10 kHz) |
Functions attached to AM tuner part | Tuning meter Bar antenna |
<General> | |
Used vacuum tubes, etc. | 7591, etc., 21 vacuum tubes, 20 semiconductors |
Pwer | 100 VAC / 117 V, 50Hz/60Hz |
Power consumption | 180 VA (No Load) 280 VA (full load) |
External dimensions | Width 454x Height 145x Depth 365 mm |
Weight | 18.6kg 20.3 kg (listed in separate catalog) |