PUI Audio™'s Copperhead Series was conceived to create a family sound across three different speaker sizes: 36 mm, 53 mm, and 78 mm square. Specialized alloy cones are paired with optimized motors to achieve superior frequency response and output, with minimized harmonic distortion.
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Copperhead Series Speakers (AS03608AS-R)

Copperhead Series 36 Millimeter (mm) Square Frame Size Speaker
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Copperhead Series Speakers (AS05308AS-R)

Copperhead Series 53 Millimeter (mm) Square Frame Size Speaker
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Copperhead Series Speakers (AS07808AS-R)

Copperhead Series 78 Millimeter (mm) Square Frame Size Speaker
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Manufacturer Stock N/A {0} N/A {0} N/A {0}
Description N/A The eight ohm, 36 mm square frame AS03608AS-R features a unique spider-less design for free-flowing cone travel that is controlled by the progressive treated foam surround. N/A The eight ohm, 53 mm square frame AS05308AS-R features a rubber surround, for water and dust resistance, and a vented voice coil former for improved voice coil cooling. N/A The eight ohm, 78 mm square frame AS07808AS-R features a rubber surround, for water and dust resistance, and a shielded double-stacked motor to protect sensitive components and for high sensitivity.
Brands N/A PUI Audio™
Manufacturer N/A PUI Audio�, Inc.
Square Frame Size N/A 36 mm N/A 53 mm N/A 78 mm
Voice Coil Diameter N/A 20 mm N/A 1 in N/A 20 mm
Rated Input Power N/A 1 W N/A 10 W N/A 15 W
Maximum Input Power N/A 2 W N/A 20 W N/A 30 W
Impedance N/A 8 Ω
Impedance Tolerance (±) N/A 15 %
Sensitivity N/A 78 dB N/A 78 dB N/A 82 dB
Sensitivity Tolerance (±) N/A 3 dB
Testing Condition for Sensitivity N/A (Sound Pressure Level (SPL) at 1 W/1 m) Avg. at 2, 4, 8, and 16 kHz
Resonant Frequency (Free Air) N/A 250 Hz N/A 230 Hz N/A 120 Hz
Resonant Frequency (Free Air) Tolerance (±) N/A 20 %
Frequency Range N/A 150 ~ 40000 Hz N/A 100 ~ 40000 Hz N/A 60 ~ 40000 Hz
Frame Material N/A Acrylonitrile Butadiene Styrene (ABS) N/A Stamped Steel N/A Stamped Steel
Magnet Material N/A Neodymium (NdFeB)
Buzz, Rattle, etc. N/A Should not be Audible with 2.83 V Sine Wave from 200 Hz to 20 kHz N/A Should not be Audible with 8.95 V Sine Wave from 200 Hz to 20 kHz N/A Should not be Audible with 10.95 V Sine Wave from 200 Hz to 20 kHz
Polarity N/A When Positive Voltage is Applied to the Positive Terminal, the Diaphragm will Move Outward
Operating Temperature N/A -20 ~ +60 ºC
Storage Temperature N/A -20 ~ +60 ºC
Weight N/A 29 g N/A 120 g N/A 560 g
Industry Standards N/A Restriction of Hazardous Substances (RoHS) 2011/65/EU
High Temperature Test N/A 96 hours at +60 ºC ± 3 ºC followed by three hours in normal room temperature
Low Temperature Test N/A 96 hours at -20 ºC ± 3 ºC followed by three hours in normal room temperature
Humidity Test N/A 96 hours at +40 ºC ± 3 ºC with relative humidity at 90% ~ 95% followed by 6 hours in normal room temperature
Temperature Cycle Test N/A The part shall be subjected to 12 cycles using the following procedure:
Low temperature: -20 ºC±3 ºC
High temperature:+60 ºC±3 ºC
Cycle: 2 hours at High, 5 minutes High to Low, 2 hours at Low, 5 minutes Low to High
Vibration Test N/A 10-55 to 10 Hz sine sweep, per minute at 1.5 mm amplitude
2 hours in each axis X, Y, and Z.
Load Test N/A White noise is applied at the speakers rated power for 96 hours at room temperature
Note for Reliability Testing N/A After each test, the speaker's SPL shall be ±3 dB of the original SPL
Features N/A
  • Coated alloy cone for extended frequency response to 40 kHz
  • 78 dB output at 1 m (98 dB output at 10 cm)
  • High-energy neodymium motor
  • Large 20 mm diameter voice coil
  • Easy-to-mount square frame
 		N/A
  • Coated alloy cone for extended frequency response to 40 kHz
  • 78 dB output at 1 m (98 dB output at 10 cm)
  • High-energy neodymium motor
  • Large 1" diameter voice coil for high power handling
  • Easy-to-mount square frame
 		N/A
  • Coated alloy cone for extended frequency response to 40 kHz
  • 82 dB output at 1 m (102 dB output at 10 cm)
  • High-energy, double-stacked magnetic motor
  • Large 20 mm diameter voice coil for high power handling
  • Easy-to-mount square frame
Note N/A Specifications subject to change or withdrawal without notice.