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The D4500Ph-Nd 2″ midrange neodymium compression driver delivers high efficiency, incredible power handling, and strong vocal reproduction, making it the ideal choice for extreme car audio competitions.

The nearly indestructible Phenolic Diaphragm structure, designed for vocal reproduction, allows low midrange reproduction from 450 Hz, which makes this driver ideal for reproducing the important vocal range with enough output to keep up the most powerful low frequency speakers.

  • The Brazilian phenolic technology delivers natural response throughout the vocal midrange response.
  • Car audio SPL enthusiasts use this 2” driver for vocal reinforcement on 3-way systems.
  • The large high temperature 4″ voice coil can handle up to 500 watts of musical power.
  • For the highest output audio systems, this 108 dB efficient driver provides competition performance.
  • Features a strong 6″ diameter neodymium ring magnet that reduces overall size and weight (vs. the ferrite D4500Ph)

Using a 6.10″ diameter neodymium motor provides a more compact design for easy front-mount installation with WGP22-50 horns, providing a compact yet powerful driver that solves the spacing and weight issues for large systems. Mounting hardware is included.


TRIO by PRV uses the latest Brazilian phenolic technology designed for vocal reproduction.

The phenolic diaphragm is attached to a 4″ diameter copper-clad aluminum wire with Kapton® former for a high 500 Watts RMS musical power handling, when used with recommended HPF:

  • 600 Hz at 12 dB per octave filter Crossover / BT12
  • 550 Hz at 18 dB per octave filter Crossover / BT18

Its incredible output capabilities make this midrange driver one of the loudest vocal drivers on the market!


An injected and machined, high-precision aluminum phase plug provides better voice coil heat dissipation and high output levels.

This design, an exclusive from PRV Audio for neodymium midrange drivers provides better vocal response and efficiency. The Trio series driver is one of the top choices for car audio competitors.

PRV Trio 2″ Neodymium Midrange Driver D4500Ph-Nd 500 Watts 4” Voice Coil 8 Ohm – Phenolic Diaphragm

Technical Details


Exit Throat Diameter 2” (50mm)
Nominal impedance 8 Ohm
Nominal Power Handling* 250 Watts
Continuous Program Power(RMS)** 500 Watts
Max Peak Power*** 1000 Watts
Sensitivity 2.00V at 1m 110 dB
Recommended Hi Pass Crossover
For Full Power Handling
600 Hz
12db/oct Crossover
Frequency Response at -10dB 450 – 7,000 Hz
Voice Coil Diameter 4” (101.6 mm)
Voice Coil Wire CCAW
Voice Coil Former Material Kapton
Diaphragm Material Phenolic
Flux Density 1.95 T
Magnet Material Neodymium
*Nominal power handling is defined as the maximum RMS power that the speaker can handle in a 2-hour test with a pink noise with 6dB of crest factor and a bandpass filter with 12db/oct tuned in its usable frequency range.
**Continuous Program Power (RMS) is the maximum power that the speaker can handle considering a regular musical program using our recommended filters, this power can be used to define the optimum amplifier power to avoid a clean signal without clipping or saturation.
***Max Peak Power is the maximum power operation for the speaker, this power is allowed just for a few fractions of a second, usually found just on the peaks of the music. Keeping this power for a little longer timer will damage the speaker.


Overall Depth 6.10″ (155 mm)
Mounting Depth 4.43″ (112.5 mm)
Mounting Bolt Circle M6 x 4 4″ (102 mm)
Net Weight 9.59 lbs (4.35 kg)
Shipping Weight 9.92 lbs (4.50 kg)
Carton Dimensions W x L x H 6.5″ x 6.5″ x 5.71″ (165 x 165 x 145 mm)

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