AOpen HP-590 Vibration Headphones
Review by Harry Lam on 07.22.03
Product provided by AOpen, MSRP: $24.95
Specifications:
Driver Unit: | 30mm x 2 |
Vibration Unit: | 30mm VIBRATION speaker |
Vibration Unit Fo: | 100Hz 5% |
Frequency Response: | 20 - 20KHz |
Impedance: | 32 ohm |
Sensitivity: | 99dB 3dB S.P.L. at 1KHz |
Input Connection: | 3.5mm Stereo Plug & 6.3mm Adapter |
Control Features: | With In-Line Vibration Level Adjustment |
Cord Length: | 1.2M |
Operation Voltage: | DC1.5V (AA) Battery |
Rated Output Power: | 10mW |
Max Output Power: | 500mW |
Accessories: | Carrying Pouch, Size "AA" Battery |
Definitions:
Driver Unit - The primary speakers on a pair of headphones are called the drivers. These speakers provide the bulk of the audio. Generally, a larger driver size is better (for headphones), although the quality of the part is also something that should be considered.
Vibration Unit - This is the vibration unit on the AOpen HP-590 Vibration headphones. This is a low frequency unit that has been designed for a greater amount of cone movement. Since the cone on the speaker has a greater amount of freedom, more air is moved with each tone, creating the vibration sensation.
Frequency Response - This is the range of audio frequencies in which a device can produce. 20Hz - 20KHz is the band of hearing for an average person, however just because a device offers a wide frequency response does not make any implications about the quality of the device.
Impedance - This is essentially a measure of how much "power" a pair of headphones requires. The more professional headphones usually have a higher impedance, signifying the need for an headphone amp or something similar. The AOpen HP-590 vibration headphones have a pretty normal impedance for typical use with portable electronics and computer audio.
Sensitivity - This is the lowest perceivable difference in volume for this pair of headphones.
Input Connection - The 3.5mm plug is the standard one used on CD players, computers, etc, while higher grade audio electronics use the 6.3mm plug (think of the plug on a guitar amp).
Control Features - AOpen is referring to the vibration controller that is on the speaker wire.
Operation Voltage - Simply put: the vibration part of the headphones takes a AA battery.
Rated Output Power - This is the rated output power of the headphones (also known as RMS). Basically this is a rating for the constant power of the headphones. Generally, the higher this number the better.
Max Output Power - This is the maximum output power of the headphones (also known as PMPO). This is a rating for the peak power of the headphones (usually for a few ms at most). This number usually should be taken with a grain of salt (as the cheaper manufacturers of speakers and headphones will advertise this number as their wattage whereas the "true" value is 1/1000th of the actual).
Accessories - The AOpen HP-590 headphones come with a carrying pouch (which is comparable with the carrying pouches that come with other headphones) and a battery for the vibration unit.
« Introduction | Aesthetics and Appeal » |