SPH-170
The Monacor SPH-170 is a 7.25 inch (185mm) midwoofer featuring a carbon damped polypropylene cone, an inverse soft butyl rubber surround, a powerful 100mm ferrite magnet system and a rigid diecast aluminium basket.
Drive units that feature a smaller diameter voice coil, a plastic cone & an inverse surround (such as the original Spendor BC1 bass unit) often offer a linear bandwidth with a very sweet midrange performance and that is indeed the case with the SPH-170. A good choice for BBC inspired 2 way stand mount designs.
| Resonant frequency (fs) | 38 Hz | Nominal impedance (Zn) | 8 Ω |
| Mechanical Q factor (Qms) | 2.38 |
DC resistance (Re) | 6.3 Ω |
| Electrical Q factor (Qes) | 0.55 | Max power handling | 80W |
| Total Q factor (Qts) | 0.44 | Sensitivity (2.83V/1m) | 90 dB |
| Equivalent volume (Vas) | 37L | Chassis diameter |
185 mm |
SPH170