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Tweeter flush vs angle mount.

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Old Sep 15, 2007 | 09:58 PM
  #1  
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Default Tweeter flush vs angle mount.

I currently have my tweets setup like so:



and I'm thinking of re-mounting them with flush mounts like this:


I'm hoping that:
a) the reflection angle against the windshield will be increased slightly lowering the sound stage (It sounds like the highs are coming from the roof)
b) Making the install look a little better. There's a slight curve to the A pillar and I overcompensated trimming the Angle mounts trying to get them to fit.

Thoughts?
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Old Sep 15, 2007 | 10:22 PM
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I had mine in exactly the same spot as the bottom pic in my C5. I think they sounded great.

Shan
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Old Sep 15, 2007 | 11:01 PM
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I tried that with some silk domes. While it worked, it caused a lot of audio "weirdness." Basically cancellation and made some frequencies really hot.
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Old Sep 15, 2007 | 11:27 PM
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Originally Posted by Shangreer
I had mine in exactly the same spot as the bottom pic in my C5. I think they sounded great.

Did you leave your tweets in phase or reverse them?

Shan
Originally Posted by Kale
I tried that with some silk domes. While it worked, it caused a lot of audio "weirdness." Basically cancellation and made some frequencies really hot.
That sounds typical of silk domes. From what I've seen, Silk dome tweeters project like a floodlight with a more mellow sound. The "wierdness" can be attributed to the fact that so much of the sound wave is delayed it's almost like a continuous echo.
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Old Sep 15, 2007 | 11:28 PM
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Reversed.
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Old Sep 15, 2007 | 11:30 PM
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Originally Posted by TheRadioFlyer
That sounds typical of silk domes. From what I've seen, Silk dome tweeters project like a floodlight with a more mellow sound. The "wierdness" can be attributed to the fact that so much of the sound wave is delayed it's almost like a continuous echo.
no, the weirdness is from the soundwave hitting the glass, causing reflection issues, cancellation and comb filtering.
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Old Sep 16, 2007 | 01:12 AM
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Originally Posted by Kale
no, the weirdness is from the soundwave hitting the glass, causing reflection issues, cancellation and comb filtering.
Do you think i'll have that problem with my tweets (ring radiator style)
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Old Sep 16, 2007 | 02:06 AM
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Originally Posted by TheRadioFlyer
Do you think i'll have that problem with my tweets (ring radiator style)
yeah, you would have that problem with any style speaker.

it may not sound horrible to you. Pull your pillars out and sit them in there and see how it sounds. Especially at low volumes.
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Old Sep 16, 2007 | 09:17 AM
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Try to avoid pushing them all the way back into the corners. That creates sort of a horn effect which generally turns out to be bad. If you deliberately use the windshield as a reflector, you'll run into other problems. If they're angle mounts, use some double-face tape (like from a woodworking supply house) and stick them in different positions and angles. You'll find that the slightest changes makes absolutely enormous differences in soundstage width, height and placement.

There's no difference whether you use silk, fabric or metal domes. All that matters is that you experiment with the right location and use more than one tweeter. Polarity can occasionally affect things, too, but since the tweeter isn't on the same plane with the midrange, it's not as important.

Look at Kale throwing 'comb-filtering' around. I'm getting all misty.
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Old Sep 16, 2007 | 01:02 PM
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Originally Posted by Spkrboy
Try to avoid pushing them all the way back into the corners. That creates sort of a horn effect which generally turns out to be bad. If you deliberately use the windshield as a reflector, you'll run into other problems. If they're angle mounts, use some double-face tape (like from a woodworking supply house) and stick them in different positions and angles. You'll find that the slightest changes makes absolutely enormous differences in soundstage width, height and placement.

There's no difference whether you use silk, fabric or metal domes. All that matters is that you experiment with the right location and use more than one tweeter. Polarity can occasionally affect things, too, but since the tweeter isn't on the same plane with the midrange, it's not as important.

Look at Kale throwing 'comb-filtering' around. I'm getting all misty.
misty

My issue is that I don't have the fabrication skills to make custom a pillar mounts like kales. I'm pretty much stuck with the position i have currently since that's where the big hole is. I suppose I could rig up some sort of "tweeter cradle" to hold them at various angles in the same location. I'm thinking coathanger or single strand wire.
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Old Sep 16, 2007 | 02:54 PM
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A directly radiating tweeter pulled somewhat away from the corner will sound far better than the same tweeter shoved way back in there and reflecting. The only catch is that it will not quite reach the same maximum SPL as the corner (if you care about loud). There are ways to hide that hole if you get away from it.
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