Motus Audio

Motus Audio is the culmination of over 25 years of experience in the high end audio industry. The goal of every Motus driver design is linear frequency response, low distortion and superb tonality.

All Motus drivers are hand assembled using only the finest materials. Each material chosen for its sonic integrity after extensive evaluation.

Each Motus driver goes through a rigorous four stage quality control process to ensure that the driver in your loudspeaker represents the best Motus has to offer.


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UH25CT1       order no. mot-uh25ct1       - not available
25 mm dome tweeter with high quality dome.
  • power handling (continuous/programme) = 90/150 W
  • resonance frequency fs = 550 Hz
  • impedance R = 6 Ohm
  • sound pressure level SPL = 90 dB (2,83V; 1m)
  • DC resistance Re = 4,85 Ohm
  • force factor BL = 3,21 N/A
  • voice coil inductance L = 0,08 mH
  • effective piston radiating area Sd = 7,55 cm2
  • effective mechanical mass incl. air load mms = 0,27 g
  • equivalent volume of compliance Vas = 0,02 l
  • total Q factor Qts = 0,6 (Qms=3,5, Qes=0,72)
  • voice coil diameter = 25 mm
  • maximum peak linear excursion vibration xlin = +/- 0,3 mm
  • mounting diameter d = 90 mm
  • overall diameter d = 127 mm
  • mounting depth (not countersunk) t = 62,5 mm
PDF data sheet

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recommended cabinet 1:
closed cabinet with 2 L volume
from 122/77 Hz (-3dB/-8dB)
 
recommended cabinet 2:
7,4 L volume bass reflex cabinet
with HP50 reflex tube, 15 cm long.
from 61/49 Hz (-3dB/-8dB).

UH130PC1       order no. mot-uh130pc1       - not available
14 cm coax driver with high quality cone.
  • power handling (continuous/programme) = 80/135 W
  • resonance frequency fs = 59,29 Hz
  • impedance R = 6 Ohm
  • sound pressure level SPL = 88 dB (2,83V; 1m)
  • DC resistance Re = 5,5 Ohm
  • force factor BL = 7,72 N/A
  • voice coil inductance L = 0,18 mH
  • effective piston radiating area Sd = 95,9 cm2
  • effective mechanical mass incl. air load mms = 11,88 g
  • equivalent volume of compliance Vas = 7,83 l
  • total Q factor Qts = 0,38 (Qms=6,2, Qes=0,41)
  • voice coil diameter = 44,2 mm
  • maximum peak linear excursion vibration xlin = +/- 4 mm
  • mounting diameter d = 125,5 mm
  • overall diameter d = 155,5 mm
  • mounting depth (not countersunk) t = 83 mm
PDF data sheet

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recommended cabinet 1:
closed cabinet with 3,3 L volume
from 84/53 Hz (-3dB/-8dB)
 
recommended cabinet 2:
12 L volume bass reflex cabinet
with HP50 reflex tube, 21 cm long.
from 42/34 Hz (-3dB/-8dB).

UH130PW1       order no. mot-uh130pw1       - not available
14 cm bass driver with high quality cone.
  • power handling (continuous/programme) = 90/150 W
  • resonance frequency fs = 40,76 Hz
  • impedance R = 6 Ohm
  • sound pressure level SPL = 86,7 dB (2,83V; 1m)
  • DC resistance Re = 5,54 Ohm
  • force factor BL = 7,38 N/A
  • voice coil inductance L = 0,38 mH
  • effective piston radiating area Sd = 95 cm2
  • effective mechanical mass incl. air load mms = 15,39 g
  • equivalent volume of compliance Vas = 12,71 l
  • total Q factor Qts = 0,38 (Qms=6,94, Qes=0,4)
  • voice coil diameter = 44,2 mm
  • maximum peak linear excursion vibration xlin = +/- 5 mm
  • mounting diameter d = 125,5 mm
  • overall diameter d = 155,5 mm
  • mounting depth (not countersunk) t = 89 mm
PDF data sheet

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recommended cabinet 1:
closed cabinet with 8,3 L volume
from 73/46 Hz (-3dB/-8dB)
 
recommended cabinet 2:
29 L volume bass reflex cabinet
with HP70 reflex tube, 21 cm long.
from 37/30 Hz (-3dB/-8dB).

UH165PW1       order no. mot-uh165pw1       - not available
17 cm bass driver with high quality cone.
  • power handling (continuous/programme) = 90/150 W
  • resonance frequency fs = 33,83 Hz
  • impedance R = 6 Ohm
  • sound pressure level SPL = 89 dB (2,83V; 1m)
  • DC resistance Re = 5,5 Ohm
  • force factor BL = 7,19 N/A
  • voice coil inductance L = 0,36 mH
  • effective piston radiating area Sd = 143,03 cm2
  • effective mechanical mass incl. air load mms = 16,99 g
  • equivalent volume of compliance Vas = 36,8 l
  • total Q factor Qts = 0,36 (Qms=7,95, Qes=0,38)
  • voice coil diameter = 44,2 mm
  • maximum peak linear excursion vibration xlin = +/- 5 mm
  • mounting diameter d = 154 mm
  • overall diameter d = 182 mm
  • mounting depth (not countersunk) t = 98,5 mm
PDF data sheet

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recommended cabinet 1:
closed cabinet with 15 L volume
from 56/35 Hz (-3dB/-8dB)
 
recommended cabinet 2:
55 L volume bass reflex cabinet
with HP70 reflex tube, 19 cm long.
from 28/23 Hz (-3dB/-8dB).

UH205PW1       order no. mot-uh205pw1       - not available
21 cm bass driver with high quality cone.
  • power handling (continuous/programme) = 125/200 W
  • resonance frequency fs = 26,47 Hz
  • impedance R = 6 Ohm
  • sound pressure level SPL = 88,5 dB (2,83V; 1m)
  • DC resistance Re = 4,94 Ohm
  • force factor BL = 8,74 N/A
  • voice coil inductance L = 0,39 mH
  • effective piston radiating area Sd = 211,24 cm2
  • effective mechanical mass incl. air load mms = 36,55 g
  • equivalent volume of compliance Vas = 62,68 l
  • total Q factor Qts = 0,37 (Qms=8,54, Qes=0,39)
  • voice coil diameter = 60,4 mm
  • maximum peak linear excursion vibration xlin = +/- 8 mm
  • mounting diameter d = 191 mm
  • overall diameter d = 225,5 mm
  • mounting depth (not countersunk) t = 124 mm
PDF data sheet

 
The cabinet volume calculations are executed considering an external resistance of 0.3 Ohm. We are using, if no other data is known or available, the information supplied by the manufacturer.

Please note: the frequency response doesn't say much about the cut-off frequency inside the cabinet! Therefore, we mostly give you 2 examples with dimensioning considerations and an indication, how low the loudspeaker will reproduce.

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