AudioBahn ALUM10M User manual

ALUM10M / ALUM12M
OWNER’S MANUAL

Aluminum Voice Coil Former
The voice coil former is black, anodized aluminum for highly efcient thermal transfer. This
allows winding high temperature copper wire in multiple layers for improved efciency. This
allows improved power handling by effectively dissipating heat.
Extended Pole Piece
The pole piece has been extended to provide a more linear magnetic eld for the operation
of the woofer. This lowers distortion and provides the woofer with better low frequency
response.
Vented Oversized Back Plate
The back plate has been stepped deeper to allow the woofer more excursion without bot-
toming out. Additionally, the back plate is vented with a radius aerodynamic back vent which
efciently and quickly circulates cool air around the voice coil. This allows for more excursion
and higher power handling without damaging the sub.
Voice Coil
The 4-Layer, edge wound voice coil design of the speaker allows for a variety of impedance
loads to be congured when matched with multiple subs. Please continue to the wiring
diagram portion of this manual for possible congurations you can run. The Alum subs have a
dual 2 ohm voice coil operation.
EPDM Surround
The 1.75” EPDM surround is resilient to temperature variations and provides the consistent
support necessary for the linear motion of the speaker cone. In addition, the inherent damp-
ing capabilities eliminate the transmission of sonic disturbances between the cone and the
frame of the speaker. This greatly improves the clarity of the speakers frequency response.
Flat Spider
The speaker linear compliance is balanced trough the use of a at spider design. A at
spider provides symmetrical control of the voice coil through it’s cone excursion. Linear cone
excursion reduces harmonic distortion for improved sound quality. This allows for reduced
mechanical distortion for better sound quality.
Woofer Introduction Woofer Features

Model # ALUM10M ALUM12M
Fs 26.4 Hz 24.4 Hz Qts 0.47 0.47
Qes 0.51 0.52
Qms 4.9 4.8
Vas (Liters) 35 Liters 76 Liters
Vas (Cu. Ft.)
1.24 Cu.Ft. 2.66 Cu.Ft.
Re 2 ohms 1.85 ohms Le 2.50 mH 2.7 mH Mmd 158 Grams 186 Grams Xmax +/- 13 mm +/-14 mm RMS 800 watts 1000 Watts Sd 0.033 M2 0.049 M2
Freq. Resp.
20Hz-500Hz 18Hz-500Hz
Efficiency
95.6 dB 96.4 dB
EBP 56 47
Depth
5" 5 5/8"
Hole 9 1/4" 11 1/8" Diamater 10 7/8" 12 3/4"
Displacement
0.15 Cu. Ft. 0.18 Cu.Ft.
Vas does not represent the volume of a Box. Vas is just a parameter used when calculating a box.
An EBP of less then 45 is SUGGESTED for only a sealed box and greater then 65 for a ported box.
Dimensions
Audiobahn Woofer Parameters
Parameters Box Parameters

ALUM10M ALUM12M
ALUM10M ALUM12M
0.75
Parameters Box Parameters
AUDIOBAHN UNIVERSAL SUBWOOFERS