ACCUPHASE F-5

Pre owned. In fair condition. Shows several signs of wear. Original packaging not included.

The Accuphase F‑5 active crossover is a high-quality electronic frequency divider designed by Accuphase Laboratory Inc., one of the most renowned Japanese manufacturers of precision hi‑fi electronics. This device allows the audio signal to be split into multiple frequency bands to be sent to dedicated amplifiers, enabling the creation of multi-amplified systems where each speaker operates within its ideal range, improving overall control, dynamics, and sonic detail compared to traditional configurations.

The crossover network is built with high-quality components to maintain a flat frequency response and low distortion, ensuring a high signal-to-noise ratio that preserves the purity of the audio signal both at input and output.

Accuphase introduced the F‑5 model in the 1970s as part of its series of active crossovers, a product line historically used by hi‑fi enthusiasts to build high-quality multi-amplifier systems. Over the years, the design philosophy of these frequency dividers has maintained a constant focus on precision and musicality, values that still define Accuphase products today.

When used correctly, the F‑5 allows experimentation with amplification configurations that maximize the tonal performance of speakers, particularly with horn or multi-way speakers, offering precise control of crossover points and excellent coherence between the separated frequency bands.

Its robust construction and the characteristic Accuphase design make this crossover a durable and reliable component, capable of integrating into sophisticated hi‑fi systems and contributing to a more engaging and refined listening experience.

Technical specifications:

• Crossover frequencies: Low 20 Hz – 650 Hz; Mid 650 Hz – 8 kHz; High 8 kHz – 20 kHz
• Maximum output: 6.5 V
• Total harmonic distortion (THD): 0.1% from 20 Hz to 20 kHz at 6.5 V output
• Frequency response: +0, -0.2 dB from 20 Hz to 20 kHz (equivalent bandwidth)
• Crossover point: -3.0 dB, +5%
• Filter slope: 12 dB/oct; 18 dB/oct, adjustable
• Input impedance: 100 kΩ
• Noise level: 100 dB at 2.0 V output, 20 Hz to 20 kHz
• Output impedance: L.F. 600 Ω; M.F. 600–2,500 Ω (depending on level control setting); H.F. 600–2,500 Ω (depending on level control setting)
• Minimum load impedance: 10 kΩ
• Controls: MID level, HIGH level, ON/OFF switch
• Power supply: Voltage selector for 100 V, 117 V, 220 V, 240 V 50/60 Hz
• Power consumption: 14 W
• Components: 7 transistors, 16 ICs, 2 FETs, 12 diodes
• Dimensions: 482 mm (W) × 345 mm (D) × 82 mm (H), mountable on standard 19" rack (rack inside 50 mm, 430 mm horizontal)
• Weight: 7.6 kg net