The Altec Lansing 816VI low-frequency loudspeaker system is a factory assembled vented bass horn system. This compact system fea- tures high sensitivity and high output with excel- lent directivity control down to 200 Hz. The nominal coverage at 500Hz is 80° horizontal by 60° vertical. The bass reflex porting extends the low frequency response to below 65 Hz, or lower if multiple units are used.
Link for PDF: Altec 816VI Horn Low Frequency System
