DIY 4 x 18" bass reflex subwoofer
Hahahaaaa... I decided to modify my right channel tapped horn and this is the result! As you can see, it's now a very large bass reflex enclosure loaded with 4 Mach 5 MJ-18" subwoofers.
How does it sound, you wonder? Very, very good. It's actually a bit louder than the left channel's tapped horn subwoofer and has smoother response than a tapped horn. The tapped horn is a beast, but makes bass that's not quite as linear as the bass reflex combo.
This fellow is configured as an 8 ohm load, so the amp isn't stressed in the least. According to Hornresp, it develops 110 db 1 watt 1 meter, so it took very little to convince me that this idea deserves life. To keep the sound balanced, I had to turn the bass amp's volume controls down 25%!! That makes me very happy.
I did nothing to the inner baffle (you can see the baffle in the drawing on the DIY tapped horn page) and it seems to assist with reducing standing waves inside the enclosure. I haven't added stuffing and hear no ringing, or overshoot. I'll have to get my audio friends to share their opinions after they give the system a listen.
This is why I seldom paint my speaker enclosures--things never stay the same for long ;^)
How does it sound, you wonder? Very, very good. It's actually a bit louder than the left channel's tapped horn subwoofer and has smoother response than a tapped horn. The tapped horn is a beast, but makes bass that's not quite as linear as the bass reflex combo.
This fellow is configured as an 8 ohm load, so the amp isn't stressed in the least. According to Hornresp, it develops 110 db 1 watt 1 meter, so it took very little to convince me that this idea deserves life. To keep the sound balanced, I had to turn the bass amp's volume controls down 25%!! That makes me very happy.
I did nothing to the inner baffle (you can see the baffle in the drawing on the DIY tapped horn page) and it seems to assist with reducing standing waves inside the enclosure. I haven't added stuffing and hear no ringing, or overshoot. I'll have to get my audio friends to share their opinions after they give the system a listen.
This is why I seldom paint my speaker enclosures--things never stay the same for long ;^)
The desired audio spectrum is displayed on the left side of this graphic. The 3db down point is about 25hz. This output is with 1 watt input! Not too shabby...
