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DakotaMan2002
GenIII
11/06/2002
21:05:40
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 Subject: Breaking in Subs?
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Message:
Hey got a quick question
I just got my MTX subs in today and I was told by a friend that you need to "break in" the sub before youreally kick the crap put of them??
is this true?
DakotaMan2002
Home Brew Air intake,Relocated IAT
S-Bolt mod
Home Brew Grill Insert,Bug Guard
Window Visiors,DoorEdge Guards,Tail Light guards
Blaupunkt Austin Head Unit
Kenwood 3-ways {front},Infinity Reference{Rear}
Profile 300watt mono amp, (2) 10
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Dak03ta
Dodge Dakota
JOIN HERE
11/07/2002
08:39:35
|  RE: Breaking in Subs?
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Message:
I have heard the same thing. I guess it is kinda like breaking in a new baseball glove. Maybe the surround and the "spider" below the cone need time to unstiffen from the factory. I can't imagine this would take very long since the thing should be vibrating 45+ times every second.
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Deoji
Dodge Dakota
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11/07/2002
09:58:01
| RE: Breaking in Subs?
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Message:
It's very true!! you will hear a sound diff. when they start stretching out, what i did that helped speed up the process was start my car and leave the heater on for 15-20 min at full blast, then play a bass cd. you can feel the difference in the polyurathane it gets alot softer.
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lowdaksport
Dodge Dakota
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11/07/2002
19:35:31
| RE: Breaking in Subs?
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Message:
you can lock up the sub if you bump hard before it is broken in. i am not sure what the term for that is though.
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BIGTYMER
Dodge Dakota
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11/07/2002
20:33:29
| RE: Breaking in Subs?
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Message:
It's called "freezing" the cone. This is done by melting the voice coil. All the part need to heat up and be flexible a little at a time. It's kind of like taking a brand new motor and just redlining in for a while instead of letting it run and driving it slow first.
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Grey-Fx
Dodge Dakota
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3/10/2003
19:10:34
| RE: Breaking in Subs?
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Message:
Oh coarse you have to work the sub in before you start blastin it, ya gotta get it used to the use
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JMII
Dodge Dakota
JOIN HERE
3/11/2003
11:13:42
| RE: Breaking in Subs?
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Message:
They will loosen up in about 2 weeks of "normal" playing - like a new pair of shoes :) You only need to break them in if your entering a competition and need to perform at max specs like the day after you installed them. I doubt you'll hear ANY difference unless your using a highly tunned band-pass box.
- John
http://home.mindspring.com/~jntmoore/truck/home.html
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KU40
Dodge Dakota
JOIN HERE
3/11/2003
18:27:02
| RE: Breaking in Subs?
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Message:
not entirely true. the Fs of a sub can drop by as many as 5 hz as it is broken in, which can affect the sound quite a bit.
the easiest thing to do is run some test tones through it. start with 50 hz for 5 minutes and the subs barely moving, then go to 60 hz for 5 minutes, etc., up to 100 hz. then drop down to 40 hz as the first cycle and go back up. then drop down to 30 and go back up. then let the sub cool down for about 30 minutes and start over, turning the gain up just a little more each time. you can break in your subs in just a days time.
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JMII
Dodge Dakota
JOIN HERE
3/11/2003
18:55:31
|  RE: Breaking in Subs?
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Message:
"...which can affect the sound quite a bit. "
Like I said - "I doubt you'll hear ANY difference unless your using a highly tunned band-pass box."
No way your hearing a 5Hz difference of the F3 downpoint of a given sub (or enclosure) unless your so experience in this type of stuff you already know how to break subs in properly and have the right equipment to do so.
Not trying to be a smartazz, just 'da facts.
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KU40
Dodge Dakota
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3/11/2003
22:39:26
| RE: Breaking in Subs?
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Message:
Not to argue, but just to clarify my point, I just messed with winISD about that point. for my first example I used a JL Audio 12W3 in a sealed box. If i changed the Fs by 5 hz, i gained or lost 2-3 db in the same enclosure over the entire sub's useful output.
In a ported box the results were much the same, except the response curve was affected (changed) more than in the sealed box, where the most notable difference was just in SPL and the change was pretty uniform over the frequency response.
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JMII
Dodge Dakota
JOIN HERE
3/12/2003
11:23:54
|  RE: Breaking in Subs?
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Message:
KU40 - clearly you fit into the rare group of those are experience enought to know.
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