Morel SCM 634 Midrange
The Morel SCM 634 Midrange drive unit combines many of the Morel proprietary technologies and innovations resulting in an exceptional drive unit: The Uniflow™ Aluminium diecast chassis gives maximum undisturbed airflow and minimal rear reflection; the Coppersleeve / Faraday pole piece negates rising voice coil impedance therefore maintaining linearity; the motor system is superbly engineered featuring a Hybrid™ Neodymium / Ferrite mixed magnet assembly and a large 3" voice coil wound with Hexatech™ Aluminum wire.
The SCM 634 features a sandwich cone composed of Carbon Fibre outer layers bonded to a Rohacell® structural foam core - a cutting edge technology more commonly found in the aerospace industry. The extremely rigid and light cone offers a highly dynamic sound with great pace and control.
The frequency response is tailored specifically for midrange reproduction and is very flat with superb linearity between 1-5 kHz; the useable response extends to 7 kHz. Power rating is 150w nominal and can withstand short term peaks of 1000 watts. A full datasheet can be downloaded from the bottom of this page.
Superb drive unit - highly recommended.
| Resonant frequency (fs) | 49 Hz | Nominal impedance (Zn) | 4 Ω |
| Mechanical Q factor (Qms) | 1.32 | DC resistance (Re) | 3.3 Ω |
| Electrical Q factor (Qes) | 0.59 | RMS power handling | 150W |
| Total Q factor (Qts) | 0.4 | Sensitivity (2.83V/1m) | 89 dB |
| Equivalent volume (Vas) | 14 L | Chassis diameter | 160 mm |
SCM634