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Features discrete 4-channel and stereo inputs, tape monitor, duplicated DIN and RCA inputs and outputs. Close-tolerance phase-shift network, 20-18,000 Hz ±10 degrees (typically 6 degrees). Response 5-100,000 Hz ±1 dB. THD 0.025% S/N -80 dB with only 250 mV signal in. Low-impedance output for placement up to 100 feet from control amplifiers. Switchable blend for up-date for full logic. Wired and tested.
.................................$99.95

Same as 106C except less case and trim panel. For special installation. Wired & tested.
..............................................$74.95
Trim Panel & knobs................. $8.95

Designed specifically to reproduce SQ matrixed program material. Will also synthesize regular 2-channel stereo records. Gain 1.3 dB. Response 20-20,000 Hz. Input imp. 1 megohm. Dist. 1% THD max. Must be connected at output of a preamp. 3V/ H x 93// W x 7" D. Walnut cabinet
.......................... $87.95

The simplest type decoder for recovering 4-channel information from 2 channels. Does not require two additional power amplifier channels. Provides level adjust for rear speakers. Unit connects between speakers and power-amp outputs. Is a passive device.
Kit....................................$22.50
Assembled........................$29.95

Automatically provides correct decoding of all types of matrixed 4-channel program material. Provides optional front-to-rear separation enhancement. Connects into hi-fi system between preamp & power amp or through tape jacks. Has inputs for 2- and 4-channel tape sources. (S + N)/N 70dB . Gain is unity. Maximum input 4 V rms. Response 20-20,000 Hz ±ldB.
........................$99.95

Designed to be used with present stereo systems to provide 4-channel reproduction. Has 4-channel preamps and 2-channel stereo power amp. Includes a 4- or 2-channel 8-track cartridge player and decoding (matrixing) system for producing 4-channel material from 2-channel conventional or encoded sources. 18 W/ch (2 channels) dynamic power into 8 ohms (15 W/ch continuous) at 0.5% HD. Power bandwidth 30-20,000 Hz. Sensitivity: tuner & aux. inputs 200mV.
................... $299.95

For use with 2-ch systems with decoder jacks; had 3-pos. selector switch for discrete 4-ch, matrixed 4-ch, and synthesized 4-ch; built-in SQ decoder & 4-ch synthesizer circuit; input jacks for radio, tape, phono, and CD-4 signal sources
...........................$99.95

Outboard demodulator for use with multi-channel receivers without built-in CD-4 capability; uses same circuitry as the company's 700+, 800+, and 900+ four-channel receivers; response 20-10,000 Hz ±1.5 dB (-5dB at 15,000 Hz); S/N 60 dB (CD-4 "on"), 65 dB (CD-4 "off"); channel separation 20 dB; phono input sensitivity 2 mV; input impedance 100,000 ohms ±10% with 30 pF; output impedance 2000 ohms. Enclosure designed to match company's multi-channel receivers.
...........................$119.95

Converts 2-channel stereo system into 4-channel (discrete, SQ, RM). 13 W/ch rms; 5.5 W/ch rms at 25-35,000 Hz and 1% THD, 8 ohms). Features joystick 4-channel balance control, speaker switch, and tape monitors for 2- and 4 channels
.......................$239.95

Designed to be used with the CD-4 four-channel system. Can be added to any existing 2-channel turntable & 4-channel reproducing system. Input 1.5 mV at 100,000 ohms impedance. Output 300 mV at 5000 ohms impedance. Response 20-16,000 Hz. Separation semi-adjustable.
............$129.95

Designed to convert regular 2-channel stereo systems into discrete and SQ matrix 4-channel stereo systems. Features built-in SQ decoding circuit for playback of Columbia and other SQ-decoded discs; firm's 4-channel matrixing circuit for regular 2-channel stereo program sources. Requires separate 2-channel amp & speakers. Features master front-and rear-volume control. Has fused speaker outputs, 6 1/2 W rms/ch into 8 ohms at 1% THD (50-20,000 Hz) both channels driven
................$59.95

For reproducing 4-channel sound. Includes the company's "Composer Circuit" (similar to Dy-naco system) to convert conventional 2-channel stereo sound sources into 4-channel reproduction. Also includes CBS matrixing circuits for playback of CBS 4-channel SQ Quadraphonic records. Has simulated walnut-finished case
..................$24.95

Synthesizes 4-channel sound from regular 2-channel stereo records, tapes. Does not require an additional stereo amplifier. Has 4-position function switch, rear level control, phono jacks
............$14.95

Derives 4-channel sound from present 2-chan-nel car stereo tape system or FM radio. Front panel contains rear-level speaker control, 2- or 4-channel mode switch, and front (L & R) speaker-level controls. If present system has four speakers, only adapter is required; if two speakers, two more speakers must be added. For 12-V negative ground systems. Includes two 3-ft, two 6-ft., and two 15-ft. connecting cables. ........................$5.95
LAFAYETTE - 99-62994. Pair of 3" x 5" matching rear deck speaker systems....................$7.95

Features full SQ logic (front/back logic and wavematching logic). Will also handle RM and other matrixes; derives 4-ch sound from 2-ch program sources. Has 2- and 4-ch inputs. Outputs: two sets of 4 outputs for decoded or discrete; 2-ch tape outputs. Controls: power "on-off", master volume, function switch tape/source, power indicator, tape/source indicator, and tape and source sensitivity slide switches
........................$109.95

Full-logic SQ decoder featuring wave-matching and variable blend; separation of up to 20 dB; designed to fit into special under-chassis slot of company's Quadradial receivers
..................... $79.95

Designed to be used with any 4-channel receiver; phase-lock loop for the 30kHz carrier signal; built-in noise reduction circuits for each channel; has rear-channel calibration controls & CD-4 calibration disc; features auxiliary set of 4-channel inputs; front-panel Aux. push switch
.....................$139.95

Designed as a control center for 4-channel discrete tapes and has built-in SQ full-logic (gain-riding) matrix decoder. Features four VU monitor level/balance meters. (S+N)/N 80dB. HD 0.1%. Sensitivity: input & 4-ch. 1, 2 250 mV; Rec/PB 2 & 4-ch. tapes 750 mV. Output: front 500 mV, back 550 mV & 2V.
..............$229.50

Has four separate Dolby-B type noise-reducing systems within a single housing. Features four VU meters. With channels operated in pairs the unit affords simultaneous decoded stereo monitoring or full 4-channel Dolby encoding. Has a standard 400-Hz recording calibration tone on all four channels and a 420-Hz pulse circuit for easy identification of the calibration tone. Increased (S + N)/N of 10 dB at 10,000 Hz (5 dB at 1000 Hz). Sensitivity: tape and line 0.1 V. Outputs: record and monitor 0.3 V. Has multiplex filter. Response 20-20,000 Hz ±1.5 dB.
...........$399.50

Has a preamplifier and features inputs for six low-impedance microphones (four circuits mike/line switchable and two circuits mike only). Has a six in and four out format. (S + N)/N is -62dB (-72dB line); mike (600 ohms balanced) input 0.1 V max.; line input 0.3 V (7 V max.)
......$429.50

Low-distortion, high separation demodulator for playback of CD-4 discrete 4-channel recordings. Includes 4-channel semiconductor cartridge for mounting in any standard tonearm and will also play 2-channel and all other discs. Phono cartridge response d.c. to 50,000 Hz. Demodulator audio response 20-16,000 Hz. Built-in equalizer/preamps. Inputs: phono #1 (semiconductor cartridge) 3 mV; phono #2 (magnetic cartridges) 1.5 mV. Input impedances: phono #1 4700 ohms, phono #2 100,-000 ohms. Output 300 mV. Has 3-position mode selector including 4-Chan. Auto for demodulating CD-4 records or automatically switching to 2-channel stereo, depending on record being played; 4-Chan. Aux.; Conventional Stereo; Indicator automatically lights to indicate playing and demodulation of CD-4 record. Separation adjustment
...................$159.95

3-inch screen to view all 4-channel signal levels & phase relationships. Connects either at speaker terminals or outputs of any preamp.
..................$259.95

Designed as a 2-channel stereo system with 15 W/ch rms continuous power for use with any conventional 2-channel stereo system to provide 4-channel sound reproduction. Can be used with both discrete or matrix inputs. Has matrix decoding circuits similar to Dynaco system. Will extract out-of-phase material from a 2-channel program source or any 4-channel encoded material. Features four choices of multi-channel listening: "Concert Hall," "Studio," "Surround," and "Stage;" apparently derived from variations in mixing and high-frequency roll-off
................... $169.95

When used with stereo receiver permits 4-ch matrixed records, 4-ch tapes & 4-ch FM stereo broadcasts to be played; requires two additional speakers. Grained-walnut enclosure.
..............$89.95