Pro Audio

HF Products & Components


Find a Dealer This table charts the specifications for the APT:50 speaker
Speaker Detail
Throat Size1", 25.4mm
Nominal Impedance*8 ohms
Power Rating**35W (AES)
Free Air Resonace2.1kHz
Usable Frequency Range3500Hz-20kHz
Magnet Weight8oz, 0.22kg
Voice Coil Diameter1" / 25.4mm
Thiele & Small Parameters
DC Resistance (Re)6.3
Mounting Info
Overall Diameter2.75", 69.9mm
Mounting Holes DiameterN/A
Mounting Holes B.C.D.N/A
Mounting ThreadUse Apt Horn or Adaptor
Depth2.53", 64.3mm
Weight1.7 lbs, 0.77 kg
Volume7.54 ", 0.12 liters
Materials of Construction
Diaphragm MaterialPhenolic
Magnet CompositionFerrite

* 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).