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Noise Canceling Horns? Acoustic Guys?
Did I correctly orient these hellas in my fender? Is it possible that the orientation could effect the volume of these horns? I want to make sure they're as loud as possible!
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12-05-2005, 07:35 AM
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Back in the saddle again
Join Date: Oct 2001
Location: Central TX west of Houston
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With speakers you can create cancellation by wiring them oppositely. I'm only guessing that unless you pointed the horns at each other at the right distance appart the only way you might "cancel" them would be to wire them wrong. But I'm no expert.
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Steve '08 Boxster RS60 Spyder #0099/1960 - never named a car before, but this is Charlotte. '88 targa  SOLD 2004 - gone but not forgotten
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12-05-2005, 08:07 AM
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One high, one low and they're wired up w/ a relay. Thanks.
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12-05-2005, 09:15 AM
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Back in the saddle again
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Yep, with 2 different tones they are much less likely (or not at all) to experience destructive interference
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Steve '08 Boxster RS60 Spyder #0099/1960 - never named a car before, but this is Charlotte. '88 targa SOLD 2004 - gone but not forgotten
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12-05-2005, 10:22 AM
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They'll be louder if you move them to the passenger compartment.
 Okay, maybe I'll add something else. Visualize the path of the sound coming out the horn and where it will go. Follow the path like a pool ball, banking off the ground. If they are pointed directly at the ground the sound may bounce back up into the same area and not be very loud outside the fender. If you point them at the ground at an angle, maybe more of the sound will bounce off the ground in a direction at an angle coming out from under the car. Aim them where you want them to be loudest as they are at least a little directional. straight down and back up v^ v^ v^ v^ v^ v^ v^ v^ v^ ___ down at an angle and back up at an angle \-------|-------/ ->------|------> --\-----|-----/ --->----|----> ----\---|---/ ----->--|--> ------\-|-/ ______________ Have fun,
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Rob Channell One Way Motorsports 1979 911SC mostly stock  1972 911T Targa now with a good 2.7  1990 Miata (cheap 'n easy) 1993 C1500 Silverado (parts getter) Last edited by Rob Channell; 12-05-2005 at 05:55 PM.. |
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12-05-2005, 05:43 PM
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Back in the saddle again
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Good thinking Rob. valid point.
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Steve '08 Boxster RS60 Spyder #0099/1960 - never named a car before, but this is Charlotte. '88 targa SOLD 2004 - gone but not forgotten
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12-05-2005, 06:30 PM
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except... the sound will not be very directional at the dominant frequencies -- won't hurt tho
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12-05-2005, 07:56 PM
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Quote:
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Rob Channell One Way Motorsports 1979 911SC mostly stock 1972 911T Targa now with a good 2.7 1990 Miata (cheap 'n easy) 1993 C1500 Silverado (parts getter) |
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12-06-2005, 05:27 PM
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The horns will be way higher than that -- maybe in the 1kHz range or so. Get a test record and match the freqs. if you need to.
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"A man with his priorities so far out of whack doesn't deserve such a fine automobile." - Ferris Bueller's Day Off |
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12-06-2005, 08:20 PM
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1979 Porsche 911SC
2004 Porsche GT3
2015 KTM RC390
