Van den Hul The FROG

The FROG is a moving coil cartridge, handmade to order, featuring the copper coil wire from a GRASSHOPPER III, the front pivot and suspension from a GRASSHOPPER IV, and a modification to the magnet.

Technical Specifications

Physical Parameters

• Weight: 8.2 g
• Dynamic mass: 0.32 mg
• Tip: VDH-IS size, 2 × 85 µm
• Tracking angle: 22°

Tracking Parameters

• Tracking force: 13.5 to 16 mN
• Compliance: 35 µm / mN
• Tracking ability (at 315 Hz at 15 mN): 70 to 80 µm
• Recommended arm mass: 6 to 10 g

Electrical Characteristics

• Output voltage (1 kHz at 5.7 cm / s): 0.65 mV
• Internal resistance per channel: 21 Ω
• Recommended load impedance: 500 Ω (> 200 Ω)
• Channel imbalance: < 0.5 dB

Audio Performance

• Frequency response: 5 Hz to 55 kHz