Pioneer C-21 User Manual

Explains the differential amplifier and SEPP circuit for high fidelity record playback.

Describes the Class-A SEPP circuit for broad dynamic range and optimal frequency response.

Details selectable input resistance and capacitance for optimal cartridge matching.

Discusses the attenuator for volume and gain controls for channel level balancing.

Guidelines to avoid improper locations for optimal performance and longevity of hi-fi components.

Explains the function of switched and unswitched AC outlets for powering connected equipment.

Details connecting the power amplifier to the C-21's output terminals.

Explains connecting the turntable to the PHONO terminals and ground wire.

Describes connecting external sources like tuners or tape players to AUX inputs.

Emphasizes secure and correct connections to prevent noise and potential damage.

Describes the power switch function and tape monitoring switch operations.

Details adjusting output level and balancing channels with volume and gain controls.

Explains selecting program sources via the FUNCTION switch and the subsonic filter.

Explains selecting input resistance and capacitance for optimal cartridge matching.

Lists initial settings for volume, tape switch, and gain before powering on the unit.

Details connecting the power amplifier and powering on the C-21 unit.

Steps for playing records, including FUNCTION and LOAD switch settings.

Advises on gentle stylus handling and preventing turntable vibration during playback.

Procedure for listening to program sources connected to the AUX terminals.

Explains how impedance and capacitance affect cartridge frequency response.

Shows how to connect tape decks using the TAPE REC and TAPE PLAY terminals.

Details connecting tape deck LINE INPUT to C-21 TAPE REC terminals.

Details connecting tape deck LINE OUTPUT to C-21 TAPE PLAY terminals.

How to duplicate tapes using two tape decks connected to the C-21's AUX terminals.

Steps to record sources onto tape using the FUNCTION switch and tape deck controls.

How to monitor recording quality with a 3-head tape deck.

Instructions on using the hexagonal wrench to tighten loose control knobs.

Chart showing total harmonic distortion vs. input level for the phono input.

Chart showing total harmonic distortion vs. output level for auxiliary inputs.

Chart showing deviation from RIAA curve for the phono input equalizer.

Chart illustrating the frequency response for auxiliary inputs.

Chart showing the attenuation characteristics of the phono subsonic filter.

Lists transistors, diodes, and details the circuitry of the equalizer and flat amplifiers.

Lists input sensitivity, impedance, and selectable cartridge load options.

Provides total harmonic distortion figures and frequency response for PHONO and AUX.

Covers power requirements, dimensions, weight, AC outlets, and furnished parts.