4.5" (114 mm) 8 Ohm, Single Driver Loudspeaker

Model #
127-FR08-01
Part #
93078
In stock
$68.49
  • Buy 1 - 0$68.49

When listening to your favorite music, you expect the sound to be pristine, unmarred by mechanical imperfections and acoustic inconsistencies. The 93078, a unique full-range loudspeaker, is designed and built to reproduce music as accurately as possible for high-end, single transducer systems without cross-over requirements.

To achieve this, MISCO built the 93078 to stay faithful to the audio of original recordings. A sensitivity rating of 91 dB SPL means less power is required compared to other speakers this size. An organic hard fiber cone and cotton spider optimize this speaker’s dispersion and damping capacities as well, resulting in an ideal transient response. With an EBP rating of 116, this driver is best suited for vented enclosures, all to reproduce your music according to your preferences.

Oaktron by MISCO is a premium line of high performance, ready-to-ship transducers and drivers for a wide variety of applications. From elegantly simple to highly specialized designs for unique and demanding applications, there is an Oaktron loudspeaker perfectly suited for your needs.

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More Information
Model # 127-FR08-01
Height 3.0000
Width 5.0000
Length 5.0000
Size, Nominal (inch & mm) 4.5" (114 mm)
Shape of Speaker Other
Speaker Type Mid-Range
Application Home Audio
Environment Indoor
RoHS Compliant Yes
Nominal Impedance (Z) (Ω) 8
Rated Power IEC268-5 (W) 8 Watts
Rated impedance (Ω) 8
Power, Continuous (W) 25
Power, Program (W) 50
Frequency range (Hz) 90-18k
Sensitivity (dB SPL) ¹ 91
Resonant Frequency (Fs) (Hz) 78
DC resistance (Re) (Ω) 6.63
Voice Coil Inductance (Le) (mH) 0.211
Mechanical Q factor (Qms) 3.781
Electrical Q Factor (Qes) 0.668
Total Q factor (Qts) 0.57
Mechanical Resistance (Rms) (kg/s) 0.394
Compliance equivalent volume (Vas) (L) 7.8216
Suspension Compliance (Cms) (mm/N) 1.366
Surface area of diaphragm (Sd) (cm²) 63.62
Moving mass (Mms) (gm) 3.038
Magnetic Gap Height (mm) 4.57
Coil winding height (mm) 5.08
Maximum linear excursion (Xmax) (mm) 0.255
Motor Force Factor (BL) (T•M) 3.846
Efficiency (η₀) (%) 0.537
Efficiency Bandwidth Product (EBP) (Fs/Qes) 116.7664671
Basket type Stamped Steel
Terminal size 2.8 mm x 0.5 mm
Voice coil diameter (mm) 19.3802
Voice coil wire material Copper Clad Aluminum
Voice coil former material Kapton
Voice Coil Winding 2 Layer, Round Wire
Magnet Material Ferrite
Magnet weight (gm) 283.5
Cone body material Abaca Fiber
Cone surround material Treated Cloth
Dust cap material Paper Composite
Spider Material Cotton
Net weight (kg) 0.73
Technical Notes

¹ Sensitivity is measured with 2.83 volt input, measured on-axis at 1 meter distance