im looking at building a standard three way basic hi mid and low but as im on a hunt for the drivers i notice most compression drivers are rated around 107db the mids i was looking at was roughly 102 and the subs or woofers were rated high 90"s around 96-99. i was curious when combined how do you equalize out the db for all the driver or is that not an important factor. if recall i read it some where that the +/- 3 db is also applied in this category but im finding it hard to find pro audio drivers that match dm within a 3db range
The woofer will finally only reach around 91 dB at low frequencies because of the baffle step (-6dB). No need to buy much louder mids. Please be aware, high efficiency and deep bass are contradictory. Thus, in a reasonably sized 3-way, a less efficient woofer may be a better choice!
Please be aware, high efficiency and deep bass are contradictory.
The Mach V FTW-21 would beg to differ
im looking at building a standard three way basic hi mid and low but as im on a hunt for the drivers i notice most compression drivers are rated around 107db the mids i was looking at was roughly 102 and the subs or woofers were rated high 90"s around 96-99. i was curious when combined how do you equalize out the db for all the driver or is that not an important factor. if recall i read it some where that the +/- 3 db is also applied in this category but im finding it hard to find pro audio drivers that match dm within a 3db range
The crossover is, along with a separation filter, a form of equalization.
A good speaker will be about +/- 1.5db from 200hz to 10khz. To get these results, it doesn't matter which drivers - you need a very good crossover.
A passive crossover is an attenuatior, so you do not want to normally attenuate a woofer much especially at low frequencies where power is high. Attenuation converts electrical current to heat, so high current is a bad idea. Doing too much to a woofer will also affect its TS Parameters.
However you can normally do plenty of things to tame down a midrange and/or tweeter.
My advice to start with a good, small format 2-way before jumping in head first with a large 3-way.
Fundamentals of physics apply even to the FTW-21. Beg as long as you want, no way!The Mach V FTW-21 would beg to differ
Fundamentals of physics apply even to the FTW-21. Beg as long as you want, no way!
The third term was missed: you can have deep bass and high efficiency, but it will be massive.
Compact, deep bass, high efficiency - pick any two (Hoffman's Law)
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