Re: My first 3 way speaker build
Been a while and for SB Acoustic's sake I wanted to update... The SB Acoustics SB29NRX-6 is a phenomenal woofer :D; my anemic bass was related to having the port too long.
I built a 2 cubic foot (internal) cabinet, and used a 3" diameter Precision Port, with a flare at each end. There was some gray area as to just exactly how I should add or subtract from port length to compensate for the flares, so I just added an inch for the flares to the overall length. Madisound called for a 12" port for a f3 of 28Hz, and modeling with WinISD shows a 12" port tuned to 26Hz gives f3 of 27Hz; I made mine 13" end to end. As stated here, my bass was very anemic; it was good bass, just not loud enough. I cut my port down to roughly 7" and only had the flare on the outside, no longer a flare on the inside, and WOW what a difference!!
At this point I have this build sounding very good, but not quite where I want it. I'm going to swap the HDS tweeter for a Transducer Labs. The HDS is a nice tweeter, but its a tad heavy for me on the top. The vocals seem a tad hissy if I make it loud enough, and if I tame it enough to pull the hiss out of the vocals it's too stifled. I'll report back once I get that going.
Been a while and for SB Acoustic's sake I wanted to update... The SB Acoustics SB29NRX-6 is a phenomenal woofer :D; my anemic bass was related to having the port too long.
I built a 2 cubic foot (internal) cabinet, and used a 3" diameter Precision Port, with a flare at each end. There was some gray area as to just exactly how I should add or subtract from port length to compensate for the flares, so I just added an inch for the flares to the overall length. Madisound called for a 12" port for a f3 of 28Hz, and modeling with WinISD shows a 12" port tuned to 26Hz gives f3 of 27Hz; I made mine 13" end to end. As stated here, my bass was very anemic; it was good bass, just not loud enough. I cut my port down to roughly 7" and only had the flare on the outside, no longer a flare on the inside, and WOW what a difference!!
At this point I have this build sounding very good, but not quite where I want it. I'm going to swap the HDS tweeter for a Transducer Labs. The HDS is a nice tweeter, but its a tad heavy for me on the top. The vocals seem a tad hissy if I make it loud enough, and if I tame it enough to pull the hiss out of the vocals it's too stifled. I'll report back once I get that going.
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