What is stereo?

There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.

H.H. Scott '59

SAE 2700B

 Professional Dual-Channel Half Octave Equalizer
The result of years of SAE experience in home and professional equalization.  Here are some of the outstanding features of the 2700B:
Half Octave Control
Professional slide potentiometers provide for individual adjustment of 20 frequencies per channel on a half octave basis. In combination with a switchable ±8 dB or ±16 dB gain range, these half octave controls allow for extreme levels of flexibility-up to 32 dB of adjustment per frequency. This control design offers peaked response when used in extreme position, thus overcoming individual resonance problems without compromising other frequency regions. This high level of frequency control allows for proper equalization of program material as well as correction of poor room acoustic and speaker deficiencies, especially at crossover points.
 Pink Noise Generator
A built-in pink noise generator assures an accurate reference for proper equalization of wide band speaker response, speaker phasing, channel power balancing and frequency equalization.

Amplifier Stage
The SAE 2700B professional Equalizer output amplifiers incorporate a full complementary output stage, overcoming limitations of the more commonly used single ended output amplifiers. This output amplifier circuitry offers full voltage swing even into low Z loads, full symmetry clipping and at high output levels, there is no slew limiting. The 2700B also delivers 11 volts RMS into 600 ohms load assuring adeguate drive voltage under any condition.

Low Distortion
Full complementary output drive circuits provide total harmonic and intermodulation distortion levels of less than 0,02%

Low Noise
High Q Toroid inductors in combination with low loss capacitors and low noise professional slide potentiometers result in circuitry offering greater than 100 dB S/N ratio and accurate equalization curves.
IC Power Supply.
Individual IC control for positive and negative power supplies further assures low noise circuitry and stability with changing line conditions.

The SAE 2700B Dual-Channel Half Octave  Equalizer delivers +23 dBm for recording applications, offers complete control, extremely low noise, accurate equalization, and the usual superb SAE quality.
Frequency Response:  20 Hz - 20 kHz, ±0,25db
Total Harmonic Distortion (at rated output, 20-20,000Hz):  less than 0,02%
Noise:  100 dB
Insertion Loss:  less than 1 dB with controls centered
Output at Clipping:  better than 11 volts into 600 Ω
Input Impedance:  100 k Ω
Dimensions (W x H x D):  19" x 8 ¾" x 7 " (rack mounted front panel)
Weight (shipping):  23 pounds

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