Mounting amp on sub box
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Silver Member Username: NorthomahaPost Number: 395 Registered: Mar-06 | i have heard that mounting your amp on the back of the sub box is bad for the amp. i know that the ideal placement is a seperate amp rack but i dont have space for an amp rack. anybody have any info on this issue? |
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Platinum Member Username: BestmankindLos Angeles, CA USA Post Number: 13222 Registered: Oct-05 | i wouldn't do it. all that extra vibrations can't be good. before i was in a situation where i had to mount on my box. what i did was i put an extra sheet of mdf and put like 4 layers of edead on it before i mounted the amp. it helped alot. |
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Silver Member Username: NorthomahaPost Number: 396 Registered: Mar-06 | yea, i dont think itll immediatly have any effects but over the long run im thinkin itll shorten the amps life. |
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Gold Member Username: OglejustPost Number: 1731 Registered: Aug-06 | put a piece of leather or something under the amp then hook it to the box... or like a rubber bicycle intertube. just something to absorb the vibrations |
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Gold Member Username: Logan__tilleTeam RevolutionImortal Box ... Post Number: 7726 Registered: Feb-06 |
hhahahaha Rubber bicycle intertube. I lmao  |
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Gold Member Username: OglejustPost Number: 1736 Registered: Aug-06 | lmfao stfu logan |
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Gold Member Username: Nd4spd18Southeast PA Post Number: 2800 Registered: Jul-06 | Amp rack is ideal, back of the seat is usually the next best option. Quote from http://www.bcae1.com/amplfier.htm Amplifier mounting: DO NOT mount an amplifier on your subwoofer box. I know that there has been a great deal of discussion over mounting an amplifier to an enclosure and many people do it all of the time with no problems but those people probably build good enclosures from 3/4" (or thicker) MDF with extensive bracing. Most people (especially young impatient people) are too lazy to do that and build unbraced enclosures from 5/8 MDF. These enclosures will flex considerably more than a proper enclosure and will likely cause amplifier failure if the amp is mounted to the enclosure. REASON: When the woofer(s) moves in or out, the box flexes and therefore causes the sides of the box to vibrate. This vibration is transferred to the amplifier mounted to the box. All of the electrical components in the amplifier have mass. Inertia (an object in motion tends to stay in motion, an object at rest tends to stay at rest) tells them to stay at rest, the box vibration is trying to make them move. The energy from the box's vibration is transferred to the components through the electrical leads which are soldered into the circuit board. All of this will cause the components to break loose and therefore cause the amplifier to fail prematurely. Basically, the amplifier will commit suicide! :-) I'm not telling you this because someone told me it was bad. I've been repairing amplifiers since ~1985. Virtually every amplifier that's come into my shop with parts rattling around inside them have been mounted on the speaker box. It causes the legs of the semiconductors to break (which causes amplifier failure). It causes the capacitors to break off of the board (which can cause catastrophic amplifier failure). It causes solder joints to break on the semiconductors mounted to the heat sink. It causes transformer windings to grind into one another (which causes lots of smoke to pour out of your amplifier). People who repeatedly tell others to mount their amps on the speaker box because they've never had a problem remind me of people who drink and drive and say there's nothing wrong with it because they've never crashed their vehicle. Eventually, in both cases, problems will arise. |
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Gold Member Username: WingmanaliveA pic is worth 1000 posts!! Post Number: 6923 Registered: Jun-06 | Box mounted amps also make it easier for the smash and grabs. **Smash. Snip snip, run.** |
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Silver Member Username: NorthomahaPost Number: 397 Registered: Mar-06 | yea, i have no other option, there is no room for an amp rack without thoroughly modifying the trunk and back seat. i dont want to do this so i think i will do what chad says and hope for the best. |
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Gold Member Username: Tremor1127Team Fi Car Audio [:-] Post Number: 1633 Registered: Aug-06 | i use just thick rubber... a piece about 1/4" is perfect and you can cut it however big you want it. i get it free all day at a gasket company... |
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Silver Member Username: NorthomahaPost Number: 398 Registered: Mar-06 | where do you think i could get that at? |
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Silver Member Username: TatonkaPost Number: 361 Registered: Mar-07 | You can mount your amp on your sub box. Just shock mount it. It'll be fine. |
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Gold Member Username: Wolfman1966Http://www.realmofexcu..., See my KRAZY... USA Post Number: 3110 Registered: Jan-06 | just wondering, why would you have to modify the back seat, my amp screwed on there with no problem |
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Gold Member Username: Nd4spd18Southeast PA Post Number: 2817 Registered: Jul-06 | ^^^^^ X2 |
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Gold Member Username: Tremor1127Team Fi Car Audio [:-] Post Number: 1634 Registered: Aug-06 | "where do you think i could get that at?" anywhere company that makes gaskets. they have all kinds of thicknesses and there is always scrap. the last time i went they had, seriously, about 5,000 fresh cut 1/4" circles that were just big enough to cut a piece out for my memphis mojo amp, and its almost 2 feet long. |
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Platinum Member Username: BestmankindLos Angeles, CA USA Post Number: 13232 Registered: Oct-05 | tremor and his big box FTW. |
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Gold Member Username: Tremor1127Team Fi Car Audio [:-] Post Number: 1636 Registered: Aug-06 | haha, me and my big box and also not having anywhere to put the amp but on the box FTL!!! hey chad, i seen a thread that said something about stuff you had for sale but its gone now, whats up? you sellin some stuff? |
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Platinum Member Username: BestmankindLos Angeles, CA USA Post Number: 13241 Registered: Oct-05 | i was going to then i changed my mind. lol. |
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Platinum Member Username: Rovin2 10 Pioneer... Post Number: 11597 Registered: Jul-05 | great post up there MS - man i got sooooooooooooo tired of posting that exact info everytime ppl ask this mounting an amp in front a box can also cause damage even though its about 12" away like i had to learn the hard way ,master\slave my 6wk old soundstream picasso 2000d has gotten slack because of the bass so imagine what else is going to slacken inside of amps put ON the box ...... |
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Silver Member Username: Skibum12189Cleveland Post Number: 646 Registered: Mar-06 | thanks for that M.S^^^ I was debating mounting my amps on my box for a while...haha that settles it |
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Silver Member Username: NorthomahaPost Number: 399 Registered: Mar-06 | in my cadillac there is no place to really mount it because there is a trap door behind the armrest that goes from the trunk to the back seat and its surround sticks out about an inch into the trunk so it is not an even surface to mount an amp. like is said though, i really dont have much of a choice. i will do what chad said and also get some gaskets and hoper for the best. |
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Gold Member Username: Matt12490California USA Post Number: 2442 Registered: May-05 | You can also brace your box from the INSIDE, like make a rectangle where the perimeter of the amp will be, then screw it to the brace pieces. |
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