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Spare tire sub
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Old 21st February 2020, 08:46 PM   #11
AllenB is offline AllenB  Australia
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Spare tire sub
Quote:
Originally Posted by Zwiller View Post
a small town so
You don't have areas where phone reception drops out? Or the phone battery goes flat? My children know how to change a tyre even though I still go out and do it for them because this one time, I was 100 miles away, anything could have happened..
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Old 22nd February 2020, 03:04 PM   #12
The Lord Flashheart is offline The Lord Flashheart  United Kingdom
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No man, it’s not so much safety as the bloody cost, which you as dad and sub provider will no doubt have to pick up...

I am a German and Italian car man, those bastards have had fun flat tires for years now and they are the biggest pain in the *** you can imagine.

I hate them with a passion that borders on obsession.
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Old 22nd February 2020, 06:18 PM   #13
The Lord Flashheart is offline The Lord Flashheart  United Kingdom
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Here’s an eight litre box for a 8” sub that fits over a wheel arch.



https://www.ebay.co.uk/i/35256007938...iABEgL9vPD_BwE
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Old 22nd February 2020, 07:20 PM   #14
Andersonix is offline Andersonix  Sweden
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Spare tire sub
I'm going to put aside the question of why is dad putting a subwoofer into his child's car, and instead ask: Is there's any room under the front seats?
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Old 22nd February 2020, 10:38 PM   #15
Cal Weldon is offline Cal Weldon  Canada
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Spare tire sub

OT posts removed.
Yes it's a contentious subject, but no need to beat the horse any further. Any comments, send me a PM.
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Old 24th February 2020, 04:55 PM   #16
Zwiller is offline Zwiller  United States
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"That escalated quickly". All good guys.



Not 100% sure about anything. Might even throw some better drivers in the doors and forgo the sub. For now, I really want to see what kind of bass I can get from the spare tire well "on paper". Might not even be that good. From my research the well is 1.5ft3.
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Old 24th February 2020, 06:08 PM   #17
GM is offline GM  United States
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According to Small's charts, 1.5 ft^3 net = 20 Hz/F3/vented/0.02% = 75.01 dB vented, closed/0.01% = 72 dB.

Efficiency and sensitivity conversion - loudspeaker percent and dB per watt and meter loudspeaker efficiency versus sensitivity vs speaker sensitivity 1 watt = 2,83 volt box chart - sengpielaudio Sengpiel Berlin

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File Type: png 0Closed Box ref. eff. limits.PNG (43.6 KB, 50 views)
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Old 24th February 2020, 06:28 PM   #18
Brian Steele is offline Brian Steele  Grenada
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Now add a car's ~ 12dB/octave of gain below 80 Hz to that..
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Old 25th February 2020, 04:48 AM   #19
GM is offline GM  United States
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I knew it was high in some Honda, etc., size late model cars [made a TH believer out of my neighbor behind me when blew out his rear window on a hot Summer day several years ago], but my only trunk 'sub' was in a 70-1/2 Camaro and it sounded fine for us, though didn't have much gain at all using a pair of Radio Shack 12" 'HIFI' woofers doped to protect them a bit. Didn't measure it, but definitely < in room corner loading that can only peak out at +9 dB.

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Old 25th February 2020, 09:36 AM   #20
The Lord Flashheart is offline The Lord Flashheart  United Kingdom
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Quote:
Originally Posted by Zwiller View Post
"That escalated quickly". All good guys.



Not 100% sure about anything. Might even throw some better drivers in the doors and forgo the sub. For now, I really want to see what kind of bass I can get from the spare tire well "on paper". Might not even be that good. From my research the well is 1.5ft3.
Apologies for my part in the threadís downfall, I simply didnít see what business of anotherís it is what a man does for his children.

In addition to having to get recovered three times in 6 months through not having a spare I found that the upwards facing sub position that using a spare wheel well dictated didnít sound as good as having the sub pointing backwards in the trunk.

I got around the low volume by using two tens in an isobaric sealed box, with 1.25 cu. ft You could use something like a JL audio 12w0 or w3 sealed and meet their own box spec easily.

An 8W7, though expensive, would rock in that wheel arch space box I posted earlier and keep the spare.
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