HM170Z2
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High performance 170mm / 6½ inch HD-Aerogel twin voicecoil bass midrange drive unit from the prestige range. Featuring a composite high definition Aerogel cone and fully ventilated Zamak chassis / pole piece. Twin edge wound voice coils can be configured for 4, 8 and 16 ohms. This drive unit has a neutral tonal balance with precise and detailed imaging - perfect for high end monitors.
New old stock - very, very rare, supply is limited.
Suggested ported application:
| Volume (litres) | Fb | Port diameter | Port length | F3 |
| 45 | 35Hz | 75mm | 127mm | 38Hz |
| 45 | 28Hz | 50mm | 90mm | 29Hz |
| 15 | 45Hz | 50mm | 108mm | 43Hz |
| 8 | 53Hz | 32mm | 58mm | 58Hz |
| 8 | 40Hz | 32mm | 115mm | 60Hz |
| Resonant frequency (fs) | 35 Hz | Nominal impedance (Zn) | 2x8 Ω |
| Mechanical Q factor (Qms) | 7.6 | DC resistance (Re) | 2.7 Ω |
| Electrical Q factor (Qes) | 0.37 | RMS power handling | 60 W |
| Total Q factor (Qts) | 0.35 | Sensitivity (2.83V/1m) | 89 dB |
| Equivalent volume (Vas) | 27.4L | Chassis (squared section) | 188 mm |
