--A slideshow for modifying my Voxel sub( designed by toidsdiyaudio.com). My goal was to build a skinny small subwoofer to fit behind a sofa. Use it as a second sub in my listening room to help prevent bass nulls across the room, mainly for music, not home theater.
I doubled the woofers, passives, and cabinet cubic volume. Plus a little extra volume to account for added braces and amp box.
There's definitely some noise added to the Test Tones from the youtube upload(Especially the 30Hz tone). There was no noise on the original videos. The sub plays quite cleanly down to 35Hz and rolls off sharply. I think what you hear on the 20Hz tone is actually a harmonic, not the 20Hz tone.
-Original Voxel Subwoofer plans by toidsdiyaudio.com
toidsdiyaudio.com/product/vox...
-Tang Band W5 Subwoofer:
www.parts-express.com/Tang-Ba...
-Dayton Audio DSA215-PR Passive Radiators:
www.parts-express.com/Dayton-...
-Runtogo Plate Amp:
www.aliexpress.us/item/325680...
-Hudson Hi-Fi Isolation Feet:
www.amazon.com/dp/B08GNV4BV1?...
Background and Music Demo by Tunetank.com
-Background-Cooking Food by AlexGuz
Music Demo End Of The Abyss by Aliaksei Yukhnevich
Demo and Testing Equipment:
-Onkyo TX-DS898 Receiver
-Topping MX3 Amp
-Topping BC3 Blue Tooth decoder(LDAC codec)
-Gr-Research X-SL Bookshelf speakers
-Dell XPS Desktop
Recording Equipment:
-Tascam DR-2d Linear PCM Digital Recorder
-2 Audio-technica AT2035 Cardioid Condenser Mics
Galaxy Z-Flip cell phone
Early conclusions:
It sounds good, blends well with my SVS SB1000pro sub, and digs deep for a little cabinet. Even a small sub like this can help with room modes, especially in a nearfield capacity(Behind the listeners seat). Even a cheap plate amp can perform($60). It's quiet, versatile, variable frequency adjustment, 0/180 phase, and Auto On/Off without that annoying little "Pop On/OFF" sound that a lot of cheap amps give you. Even the Isolation feet($14) really do a great job of keeping this little sub de-coupled from the floor and walking. I think my design with opposing woofers and passives also keep it from dancing too much. So far, so good. More follow up later if needed.