Прочие устройства — Line Magnetic HT-70 II

The HT-70 II is a horn-loaded super tweeter from Line Magnetic, listed by the brand among its horn units. Its horn design is based on the original Western Electric 597, and the driver uses a field coil magnet instead of a permanent magnet, so it needs an external DC supply to energise the coil.

Key specs that matter

The unit covers 3 kHz to 30 kHz, with the resonance frequency at 3 kHz. Input impedance is 8 ohms, sensitivity is 106 dB and power handling is 15 W. The field coil is rated for 15 to 160 V DC at 5 to 50 mA. Each unit weighs 3.57 kg, and the horn is made from solid aluminium.

Pairing

The HT-70 II is meant to be added on top of an existing speaker system to extend the upper treble, with a crossover or high-pass filter set near its lower limit. The high sensitivity suits efficient horn systems and low-power tube amplifiers.