The Paper Horn by Inlow Sound
-
  • The Paper Horn
  • DIY Paper Mache Horn
  • Inlow Sound 15-A
  • Inlow Sound 15-B bass horn
  • 100 hz 12 sided conical horn
  • 40 hz horn with bass reflex
  • Spiral Bass Horn
  • DIY 60 hz crescent horn
  • 135 hz mid bass horn
  • Tube Audio
  • 125 watt KT88 tube amplifier
  • Iron Butterfly: Mosfet amp transformer input/output
  • Inlow Sound Products
  • Reviews of my products
  • Folded bass horn
  • DIY 100hz midbass horn
  • DIY 80hz midbass horn
  • PCBs for your project
  • Horn with Bass Reflex
  • DIY tapped horn sub
  • DIY 4 x 18" subwoofer
  • DIY Class-A amplifier
  • DIY water cooled amp
  • DIY speaker cables
  • Jensen Imperial Horn
  • JBL 2240 60hz midbass horn
  • 25hz 114db 1W1M Horn
  • DIY 16hz sub bass horn
  • Audio Nirvana and T/L
  • Line Array: so simple...
  • Rear loaded horn project
  • DIY heat sinks
  • Horns and Class-A Audio
  • BAF 2009
  • Favorite Links
  • Altec A7 horn
  • Current project

Spiral Bass Horn

I've developed a spiral bass horn that has outstanding performance, and is also good looking. Feel free to enjoy the pictures, below. 
Below: This is the measured performance of the spiral bass horn. The video moves upwards in frequency every 15 seconds. You'll notice by 23 hz the sine is no longer clipping and becomes more efficient. Also, at 23 hz, the output voltage measured slightly under 5 volts. The horn delivers 100 db at six feet--which translates to 106 db at three feet. That's outstanding performance!
​Below: Here's a music video I captured with my iPhone. It's not professional grade, but does give a sense of the power generated by horns. 
The completed prototype, below:
Picture
Picture
Acoustic performance with a Radian 2216 neo 15 inch woofer, below:
Picture
Parting shots:
Picture
Picture
Picture