Projections Unlimited, Inc
PUI | Global Corporate HQ
15311 Barranca Parkway
Irvine , CA , 92618
United States
Phone:(714) 544-2700
Email: sales@gopui.com
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The 28 mm diameter AS02804PR-N50-R features a paper cone and foam surround for classic HiFi sound quality. Four openings on the back plate create forced-air cooling to dissipate heat from the voice coil.
Unit of Measure

Specifications

Available

Manufacturer Stock

Brands

 PUI Audio™

Manufacturer

 PUI Audio�, Inc.

Excursion

 2 mm

Thickness

 7.5 mm

Diameter

 28 mm

Tolerance (±)

 0.5 mm

Angle Tolerance (±)

 3 º

Rated Input Power

 3 W

Maximum Input Power

 4 W

Impedance

 4 Ω

Impedance Tolerance (±)

 15 %

Sensitivity

 76.5 dB

Sensitivity Tolerance (±)

 3 dB

Testing Condition for Sensitivity

 (Sound Pressure Level (SPL) at 3 W/1 m) (800, 1000, 1200, and 1500 Hz)

Maximum Distortion

 <5 %

Testing Condition for Maximum Distortion

 1 W, 1 kHz

Resonant Frequency

 350 Hz

Resonant Frequency Tolerance (±)

 20 %

Frequency Range

 250 ~ 20000 Hz

Housing Material

 Acrylonitrile Butadiene Styrene (ABS)

Magnet Material

 Neodymium (NdFeB)

Weight

 10.8 g

Buzz, Rattle, etc.

 Should not be Audible with 3.46 Vpk Sine Wave from 280 Hz to 10 kHz

Polarity

 When Positive Voltage is Applied to the Positive Terminal, the Diaphragm will Move Outward

Operating Temperature

 -20 ~ +60 ºC

Storage Temperature

 -30 ~ +70 ºC

Industry Standards

 Restriction of Hazardous Substances (RoHS) 2011/65/EU

Mechanical Reliability and Environment Testing

High Temperature Test

 96 hours at +85ºC ± 3ºC followed by six hours in normal room temperature

Low Temperature Test

 96 hours at -40 ºC ± 3 ºC followed by six hours in normal room temperature

Humidity Test

 96 hours at +40 ºC ± 3 ºC with relative humidity at 92% to 95% followed by 3 hours in normal room temperature

Vibration Test

 10-55 to 10 Hz cycles, 15 minutes per cycle.
2 hours in each axis X, Y, and Z.

Drop Test

 Drop the speakers onto a 40 mm thick board 10 times from a height of 75 cm.

Load Test

 Pink noise is applied at the speakers rated power for 96 hours at room temperature

Note for Reliability Testing

 After each test, the speaker's SPL shall be ±3 dB of the original SPL

Features

Features
  • Paper cone and foam surround
  • High 76 dB output at 3 W/1 m
  • N50 neodymium motor

Note

Note

 Specifications subject to change or withdrawal without notice.