dd 35k psi recone warm dustcap

[Trasero05]

Hi guys just got psi recone install*sub*plays good but I started to notice that my*dustcap gets a little warm wen I touch it the*sub*was to b 1600rms im pushing with a jbl gto 1200.1 gain n level less than half way I*sub*stills get hot... volume at 45 on my 9500bhs deck loud off bass off sub 0 wat maybe the problem? ??

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[raptor727 10+ year member]

Any electrical upgrades? Check to see if amp is clipping with a multimeter first. Could also be box design I had a w6v2 12 on 500rms getting stinky because of box design but that is a much more picky sub.

 

[phemps 10+ year member]

Hi guys just got psi recone install*sub*plays good but I started to notice that my*dustcap gets a little warm wen I touch it the*sub*was to b 1600rms im pushing with a jbl gto 1200.1 gain n level less than half way I*sub*stills get hot... volume at 45 on my 9500bhs deck loud off bass off sub 0 wat maybe the problem? ??

Your problem is that "gain n level less than half way" is not how to feed your sub a clean signal

 

[Trasero05]

I have big 3 yellow top on the trunk idk about box had 3 different subs with this box never had a problem with them maybe the fresh recone? ??

 

---------- Post added at 02:34 AM ---------- Previous post was at 02:33 AM ----------

 

Wat do u mean phemps???

 

[Trasero05]

The sub doesn't smell like its heating either the coils are not getting stinky it just a warm dustcapp

 

[bose301s 5,000+ posts]

So you're feeding your sub 1200 watts give or take, a sub is at best 2% efficient and that's only on super efficient drivers which anything DD or PSI make is not, so let's call it 1% efficient as in only 1% of the input power actually goes to moving the cone and making sound, the other 99% is burnt of as heat, so from 1200 watts, 12 are used to move the sub and 1188 watts are lost as heat which is quite a bit of heat so no crap your sub gets warm, it's having to dissipate **** near 1200 watts of heat.

 

[phemps 10+ year member]

I have big 3 yellow top on the trunk idk about box had 3 different subs with this box never had a problem with them maybe the fresh recone? ?? 

---------- Post added at 02:34 AM ---------- Previous post was at 02:33 AM ----------

 

Wat do u mean phemps???

Just that you can never be sure that your not clipping the sine wave of your output by just setting gain to a random position which is how you made it seem it was.

 

[bmk6795 10+ year member]

subs dust caps get warm from normal use. if you don't smell coils and its not hot its more than likely fine.

 

[hispls 5,000+ posts]

So you're feeding your sub 1200 watts give or take, a sub is at best 2% efficient and that's only on super efficient drivers which anything DD or PSI make is not, so let's call it 1% efficient as in only 1% of the input power actually goes to moving the cone and making sound, the other 99% is burnt of as heat, so from 1200 watts, 12 are used to move the sub and 1188 watts are lost as heat which is quite a bit of heat so no crap your sub gets warm, it's having to dissipate **** near 1200 watts of heat.

Actually not all the efficiency losses between electrical energy in to acoustic energy out are lost in heat in the coil, but agreed 1200W is a lot of heat. About as much as the burner on an electric range uses.

Of course in this day and age everybody is much more concerned with "how many RMS's" a sub can take, and as in the days of old, the company who exaggerates most about power ratings wins out with the majority of uninformed consumers.