Volt BM165.1 Bass-Mid Size:171x171mm

6.5" Doped Polymer Cone Mid/Bass

The BM165.1 (6.5") is a critically doped plastic HIPS cone drive unit, developed for bass/mid applications that require minimal colouration and low distortion over a wide frequency range. It uses a symmetrical field magnet system with an extended pole piece for large linear excursion capability, along with mirrored double rear suspensions that guarantee transient stability at high drive levels. The Thiele-Small parameters are optimised for relatively small enclosures to give a bass performance that complements the extended midband enabling excellent 2-way systems. The diecast aluminium chassis is vented below the suspensions to increase cooling airflow to the voice coil.

Technical Data:

Frame size:    171 x 171mm

Sensitivity (2.83v/1m):   88dB

Nominal impedance:   8 ohm

Frequency range:   50Hz - 3000Hz

Free air resonance:   30Hz

DC resistance (Re):   5.5 ohm

Voice coil inductance (Le):   1.2mH

Effective piston area (Sd):   153.94cm

Moving Mass (Md):   25g

Force factor (BL):   9.8Tm

Excursion (lin-max):   6.3mm

Qms:   4.12

Qes:   0.26

Qts:   0.24

Vas:   40.75L

Voice coil diameter:   38mm

Nominal power handling:   100w

Physical Sizes:

Frame size:   171 x 171mm

Overall depth (front of frame to rear of magnet):   90mm

Flange thickness:   6mm

Fixing holes:  4 x 5mm diameter on 178.5mm PCD

Cutout diameter:   160mm

Please note that Volt units are made to order - Delivery approximately 4 weeks. 
Price per single unit