hi this is noor i wnt know the procedure and precations errection for PRESSURE AND DP transmitters? how to take impusle line for level and flow?(water and steam) impulse line sizes? and type of material ? plz give me answer / reffer any website ? to me mail2noor.hyd@gmail.com. 1 Answers.
A specialized speaker, referred to as a subwoofer, is responsible for that deep bass experience. 1  The subwoofer is designed only to reproduce the lowest of audible frequencies. In home theater, this is often referred to as LFE (Low Frequency Effects.
The trick in building a ported box for your subwoofer is to get the right enclosure size and the right vent size. These measurement can make or break the design. The ventâs placement within the enclosure is also quite important. An equivalent of the ventâs diameter much be left between the port and any inside wall.