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Door sealing possable?

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Old Mar 18, 2005 | 10:29 PM
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Door sealing possable?

I put a new Pioneer cd changer in my '89 F150. sweet thing,pumps 200 watts out the back of the stereo. Anyway,trucks a ex-work truck,so it only has 2 door speakers. I took the door panel off and saw 3 holes in the very bottom of the door,and a "grill" on the side and rear bottom. Can I seal these up and what are they for? I'm getting good bass with 2 3X5's,but im really hitting them to get it. And soon,the truck is hopefully getting restored,so I'm gonna make the sound system kick ***,lol. Thanks.
 
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Old Mar 19, 2005 | 10:39 AM
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Originally Posted by Cruiseomatic
I took the door panel off and saw 3 holes in the very bottom of the door,and a "grill" on the side and rear bottom. Can I seal these up and what are they for? I'm getting good bass with 2 3X5's,but im really hitting them to get it.
I would not seal those grills up since they are there for a purpose. They provide ventilation and reduce cabin pressure build up. However, applying a sound damping material like Dynamat (or Peal-n-Seal if you must) to the other parts of your doors will make the door much more airtight since you are covering up all the other openings in the door. The effect of this would be a significant reduction in roadnoise as well as a tightening of the midbass from the door speakers.

Here is a pic of the door in my Ranger where I used Dynamat Xtreme...
http://memimage.cardomain.net/member...80_30_full.jpg

Here is a thread from a couple of months ago discussing your options in sound damping materials...
https://www.ford-trucks.com/forums/s...d.php?t=322287
 

Last edited by kontai69; Mar 19, 2005 at 10:46 AM.
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Old Mar 19, 2005 | 10:46 AM
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Originally Posted by Cruiseomatic
I put a new Pioneer cd changer in my '89 F150. sweet thing,pumps 200 watts out the back of the stereo.
As an FYI, your deck is not putting out anywhere near that amount of power (50Wx4). The actual output is in the range of 15-20W per channel. For the reasons why this is so, check this page out...

http://www.installer.com/tech/headpower.html
 
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Old Mar 19, 2005 | 01:42 PM
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Then why does the HU dim when the bass kicks? You can barely see it at night. I just kinda wondered. Looked in the manual,say the radio does a constant 22 watts. And if whats said is true,you could sue these manufactures for false advertisement because I know some people buy them radios for the power they send out the back.
 

Last edited by Cruiseomatic; Mar 19, 2005 at 01:47 PM.
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Old Mar 19, 2005 | 03:12 PM
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On the box of the HU you bought, it should say 50wx4 channels, and ALSO say 22x4 RMS. The difference between the two:
RMS is continuous wattage. Supposedly the HU will put out this much wattage with no strain all day if needed.
The 50w is what the HU will put out at maximum peak for a short burst. It will NEVER be able to hit 50w for very long at all.
So that is the difference.
 
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Old Mar 19, 2005 | 04:49 PM
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Originally Posted by PCWest13
On the box of the HU you bought, it should say 50wx4 channels, and ALSO say 22x4 RMS. The difference between the two:
RMS is continuous wattage. Supposedly the HU will put out this much wattage with no strain all day if needed.
The 50w is what the HU will put out at maximum peak for a short burst. It will NEVER be able to hit 50w for very long at all.
So that is the difference.
could not have said it better myself!!!!!!
 
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Old Mar 19, 2005 | 05:25 PM
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Here is a great article which discusses the ways manufacturers can fool people by "exaggerating" the output ratings of their amplifiers...
http://www.decware.com/secrets4.htm
More articles...
http://www.caraudiohelp.com/newslett...er_ratings.htm
http://www.caraudiohelp.com/newslett...ifications.htm
 

Last edited by kontai69; Mar 19, 2005 at 05:29 PM.
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Old Mar 19, 2005 | 05:28 PM
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yep


but if its a good brand and a cllear signal and a decent set of speakers 15 watts is good enough



i have a similar head unit in my car


yes it does dim a little but you can clearly hear the car 4/5 houses down at the volume it takes for the head iunit to dim


so im happy
 
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Old Mar 19, 2005 | 08:50 PM
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Nice articles,thanks. Makes things easier. And I know a little bit more now. But Since the grills on the door are to release cabin pressure,What about them 3 holes in the very bottom of the door? I have 2 pioneer speakers now,but I want something new and more stronger,What kind of speakers do yall recommend? Like door speakers and the ones that go behind the seat whare the stock speakers go? Thanks for all the info,At least when I go to a dealer,I won't get confused and know what I'm getting.
 
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Old Mar 19, 2005 | 11:08 PM
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Thank you!
 
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Old Mar 21, 2005 | 01:07 AM
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Your HU shouldn't dim though... especialy with you not running an amp or anything.
 
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Old Mar 21, 2005 | 01:28 AM
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What does that mean if it dims?
 
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Old Mar 21, 2005 | 01:53 AM
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That the HU probably isn't grounded well or wires might be too small for the constant 12V.

Also just for your knowledge.. I doubt your HU is putting out 22 wRMS. It probably only does that at 14.4V might check your manual for that too. They mark up their continues power handleage to get you to look at their product, but with anything, read the small print. It's probably at 14V, when most car's run around 12V
 
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Old Mar 21, 2005 | 09:37 AM
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Originally Posted by Cruiseomatic
What does that mean if it dims?
As RomerB2 said, your HU likely isn't grounded well or the wires might be too small for the constant 12V. You may want to connect the HU's constant power (yellow) wire directly to your (+) pole of your battery. Also, try connecting the HU's ground (black) wire directly to the chassis. I did both on my HU using 12g wire. Make sure to fuse the power wire near the battery.
 
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Old Mar 21, 2005 | 03:15 PM
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Oh,Looked at the manual,it can run on 14.4V,(10.8-15.1 Allowable) Max current Consumption: 10.0 A. Grounding system: Negitive. It barely dims too,you have to look for it at night too,I'm using the ford wiring so that would probably be why.
 
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