Pro Audio

HF Products & Components

Spec Sheet


Despite its minute size, the Eminence N151M-8 ring radiator compression driver delivers monumental performance. Utilizing a phase plug design that improves the distribution of forces over the diaphragm surface results in a driver with lower distortion, smoother frequency response, and increased sensitivity as compared to conventional ring radiator designs.

response graph

Click to enlarge.

Suggested Retail  $119.99
Your Price  $74.99

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High frequency driver specifications
Speaker Detail
Throat Size1", 25.4mm
Nominal Impedance*
Minimum Impedance5.2 ohm @ 6.2 kHz
Power Rating**45 W (AES)
Usable Frequency Range1.8Hz-27kHz
Recommended Crossover1.8 kHz @ 12 dBkHz
Magnet MaterialNeodymium
Magnet Weight4.5oz, 0.13kg
Voice Coil Diameter1.5" / 38.1mm
Voice Coil FormerPolyimide
Diaphragm MaterialMylar
DC Resistance (Re)4.1Ω
Mounting Information
Overall Diameter3.6", 91.4mm
Driver Volume Displaced.008 cu.ft., 0.223 liters
Depth1.45", 36.8mm
Weight1.7 lbs, 0.8 kg
Mounting ThreadN/A
Mounting Holes Diameter2X 1/4-20
Mounting Holes B.C.D.3 in., 76.2 mm

* Please consult for specifications of models with alternative impedances.

** Multiple units exceed published rating evaluated under AES noise source and test standard while mounted on the H290 or H290S horn in a non-temperature controlled environment.

*** The average on axis output across the usable frequency range when applying 1W/1m into the nominal impedance, i.e. 2.83V/8Ω, 4V/16Ω. Eminence response curves are measured under the following conditions: All speakers are tested at 1W/1m using a variety of test set-ups for the appropriate impedance | LMS using 0.25" supplied microphone (software calibrated) mounted 1m from wall/baffle | 2ft x 2ft baffle is built into the wall with horn front mounted | Carver PM-120 amplifier | 2700ft3 chamber with fiberglass on all six surfaces (three with custom-made wedges).