Please try again later. For in- ears earbuds this corresponds to the average of 5 measurements/ re- seats on the dummy head ( HMS). AIRCRAFT SPRUCE CATALOG PDF DOWNLOAD : To view the files you' ll need the Adobe Acrobat reader. If you don' t have the Adobe reader, you can download it ahead of time from the Adobe Web site.
Select from one of the four options below. For over/ on- ear headphones this corresponds to the average of 5 measurements/ re- seats on the HMS ( Head Measurement System) for the mid , treble ranges 5 measurements/ re- seats on 5 human. # # List of USB ID' s # # Maintained by Stephen J. Plantronics audio 770 usb to 3 5 jack adapter driver.