Crescendo HD-1 Supertweeter

The HD-1 replaces the legendary FT1 with a new magnesium alloy–coated titanium diaphragm that delivers smoother, more extended highs. An optimized neodymium motor is coupled to a CNC-lathed heatsink housing for improved thermal control, while carefully tuned dispersion ensures high-definition, hi-fidelity treble that cuts through the mix without harshness. The HD-1 shares the same sonic signature as the HDL-1, sized for applications that prefer this form factor.

Key Features

• Magnesium alloy–coated titanium diaphragm for refined, extended highs
• Neodymium motor with CNC-lathed heatsink housing for thermal efficiency
• Smooth, controlled dispersion for clear, high-definition treble
• High sensitivity for strong output with modest power
• 4Ω impedance for broad amplifier compatibility

Specifications

• RMS Power: 80W
• Diaphragm Size: 28 mm
• Sensitivity: 101 dB (1W/1m)
• Usable Frequency Range: 4,000 Hz – 22,000 Hz
• Recommended Frequency Range: 5,000 Hz – 22,000 Hz
• Impedance: 4Ω
• Sold: Individually

Mounting Dimensions

• Mounting Depth: 1.64"
• Hole Cutout: 2.25"
• Overall Width: 2.95"
• Flush-Mount Depth: 1/5"

Why Choose the HD-1?

If you’re upgrading from the FT1 or building a new high-output front stage, the HD-1 Supertweeter offers the clarity, efficiency, and thermal stability you need for modern pro-audio or SQ/SPL hybrid systems—delivering crisp, detailed highs that stay smooth at volume.