Part 1: MJL3281A RCA Circuit 16-19 Quasi-Complementary Power Amp
Автор: BuildAudioAmps
Загружено: 2025-12-31
Просмотров: 1040
Описание:
Part 1 of the series is based on the RCA Circuit 16-19, featured in the RCA Solid-State Devices Manual SC-16 (1975). This classic quasi-complementary audio power amplifier showcases a front-end topology that exemplifies RCA’s minimalist yet effective engineering philosophy—practical, elegant, and sonically capable.
Measured specifications:
87.52 Wrms at 8 Ω, or 175.03 Wrms at 4 Ω.
For 1kHz: Rise Slew Rate ≈ 6.67 V/μs and Fall Slew Rate ≈ 17.79V/μs
For 5kHz: Rise Slew Rate ≈ 6.76 V/μs and Fall Slew Rate ≈ 27.38V/μs
THD= 0.05651% , THD+N= 0.08610% , SNR=64dB
The MJL3281A that were used in the prototype are an original Motorola's PowerBase series audio transistors. Newer variants like the MJL3281AG or MJW0281A are available as substitutes.
For inquiries about this project, please email us at [email protected].
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