What survives comes from period press coverage of the nearly identical Scott 830Z. It's a ten-octave real-time audio analyzer for measuring sound-pressure level, frequency response, and room acoustics. The model number and the timing match, so the 830 and 830Z appear to be the same instrument, possibly with a suffix for a later production run or a particular market variant.
Modern Recording (July 1979, p.82) described the 830Z as a self-contained test instrument built around a matrix of 110 LEDs that display frequency response in real time across ten octave bands. The unit generates its own test signal - ten discrete tones, each frequency-modulated by about ±10 percent. The idea is to minimize standing-wave effects when measuring room response. The reviewer noted that this approach arguably produced more reliable room data than conventional steady-tone methods (Modern Recording, July 1979, p.83). The front panel offered selectable display ranges: 30 dB (±15 dB) or 20 dB (±10 dB). The rear panel had a ground post, a fuse holder, and a multi-voltage selector covering 110, 117, 220, and 240 volts.
Hi-Fi Stereo Buyers (March 1980, p.37) called the analyzer "almost like having a test lab in your listening room" - a tool for checking the frequency response of any part of an audio system, from amplifier to speaker to the room itself. The review pointed out that the instrument displayed results in full-octave bands. That put objective measurements within reach of the serious enthusiast, without a rack of laboratory gear.
Beyond these two period sources, no specifications sheet, service manual, or official Scott literature for the 830 or 830Z has surfaced in the Archive's research.
- Type: Ten-octave real-time audio analyzer
- Display: 110-LED matrix
- Ranges: 30 dB (±15 dB) or 20 dB (±10 dB)
- Test signal: Ten discrete warbled tones (FM modulated ±10%)
- Power supply: Selectable 110/117/220/240 VAC
- Period press: Modern Recording (July 1979), Hi-Fi Stereo Buyers (March 1980)
eBay Listings
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.