Question about MTX RT12X2-200 Car Speaker

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I have a little rip on the subs ring

The foam ring of the sub there is a little rip i want to know if i can fix it? if not where can i get just one 12" sub mtx sub?

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  • Millionaire3 May 18, 2009

    how do i know it is pure silicone? and i have a closed sub box will i have to repair the rip later on?

  • Millionaire3 May 18, 2009

    hey the silicone is that silicone cocking? or is it in a small tube?

  • Millionaire3 May 18, 2009

    ok do i just want to look for silicone or like silicone adhesive? im going out today to try and find silicone but i dont know what store will defiantly have it

  • Millionaire3 May 18, 2009

    ok so my best bet is just to buy the caulking

  • Millionaire3 May 18, 2009

    i know this isnt about the sub i have but i wanted to know if the radio deck would change how much bass and how loud i can get my subs? i got a cheap one from walmart just to hold me over but just wanted to know

  • Millionaire3 May 19, 2009

    what should i look in a head unit? ive noticed there categorized by amplified like class a and MOSFET. and they have crossover stuff. what should i look for and what head unit that isnt too expensive do you suggest? another thing is voltage output ratio what is the best? my overall question is which head unit is the best to get or what should i look for in a head unit.

  • Millionaire3 May 19, 2009

    then why is it when i was looking for head units on best buy if you look at the details they list MOSFET?http://www.bestbuy.com/site/olspage.jsp?...
    another thing is why do they say 50w x 4 or 25w x 4? one last thing should i be looking for subwoffer output and crossover in a head unit like this one?http://www.bestbuy.com/site/olspage.jsp?...


  • Millionaire3 May 19, 2009

    but in the case of the head unit the mosfet kinds are the best out of all the other classes? and when looking should i be looking for subwoffer output and crossover?? i want one that isnt too expensive but is also good or semi good.

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  • 221 Answers

The little rip on the foam surround can be repaired easily with some pure silcone from a harware store. Make sure it's pure silicone, because the silicone mixtures may deteriorate the foam prematurely. Also, all you're really doing is plugging the hole that the rip makes so that air doesn't leak out and further damage the surround and also affect your sub's performance. You'll need to apply a thin to moderate coat of silicone to the rip, and make sure that some gets into the rip. Do NOT use globs or big lumps. You should apply some silicone to your finger, and carefully apply it to the area. Try not to get too much on the inside/backside of the rip. If you'd rather just get a replacement sub, you should be able to find the raw driver on eBay or at a local MTX dealer.

Posted on May 18, 2009

  • 5 more comments 
  • Sphynkter
    Sphynkter May 18, 2009

    You will know it's pure silicone because the bottle/container will say "Pure Silicone" or "100% Silicone". It's a common product at hardware stores, and only costs a few bucks for a tube. You'll need to be able to get to the rip with your fingers. If you using a normal sealed or ported sub box, you can reach the face of the sub to do the repair. You only need to get at one side of the rip. If possible, you can take the sub out of the box, reach your finger under the surround and apply the silicone to the back side, which will seal the hole but keep the outside of the sub looking clean... but that's much harder as the surround is usually blocked bye the basket.

  • Sphynkter
    Sphynkter May 18, 2009

    the tube of silicone caulking will work just fine. If you can find a smaller tube, that's fine too. If you can't find a smaller tube, use the bigger caulking tube. Before you start the project, you could even go around the house and bathroom and find small caulking projects and do them all at the same time! Silicone caulking can prevent water leaks, damage, and provide additional insulation for weather-stripping, doors, and windows! Anyway, yes... get the caulk tube. It's the same stuff.

  • Sphynkter
    Sphynkter May 18, 2009

    You want to get pure silicone, not silicone adhesive. The adhesive stuff is much stickier, but we don't need that. The adhesive is also less flexible when it completely cures, and we want your sub's surround to remain as flexible as possible - we're only plugging an air hole, not trying to weld the foam back together.

  • Sphynkter
    Sphynkter May 18, 2009

    Yes.

  • Sphynkter
    Sphynkter May 18, 2009

    That's a good question. The answer is yes, the head unit can affect the overall output of bass from your system. The head unit can have a dramatic effect on your sound volume and quality. A different/better head unit would provide a higher voltage output signal, reducing the signal-to-noise ratio, and could also have equalizer and crossover adjustments for lower frequencies. Although a head unit can have a big impact on the overall sound quality and volume (including bass), many amps and sound processors (after the head unit) can make up for the head unit's short-comings. If the head unit has low volume or voltage, you can usually turn the gain up on the amp to get more volume. Turning up the gains on an amp normally increase noise and degrade sound quality, but it's less noticable with subwoofers. The simplest way to get more bass out of your system is to have high-powered subs in a well built box, and a powerful amp driving them.

  • Sphynkter
    Sphynkter May 19, 2009

    Just to clarify, the "head unit" in a car audio system is usually the CD player/radio/DVD player unit in the dash that you control. If you see things classified as "class A" or "class D" or "mosfet" or "hexfet" or things like that - those are usually amplifiers or "amps" for short. The head unit/CD player determines what the system plays, and how it's played. The head unit then hands off the signal to the amp to make it louder. The amp then hands it to the speakers to actually make sound. There's a lot of other devices that can be involved, but this is your basic scenario. I can't tell you what "the best" head unit or amp is... because it depends on what your goal is, and what your budget is =)



    You can go for a system that's all about sound quality, or you can go for a system that's all about sound volume (usually bass)... most people go for something in the middle. It's totally up to you. Keep in mind that you get what you pay for. If it says it's a 1000W amp for $299, one of those numbers is lying. A common middle-ground for an amp is $1 = 1W (one doller per Watt of power). If you buy an amp that's $300 and it says it's 300W, that's usually a decent quality amp.

  • Sphynkter
    Sphynkter May 19, 2009

    Yes, I forgot that detail. Most head units have built in amplifiers. The built in amp is very small, and normally produces between 10-25W of power, just enough to drive normal door and mid-range speakers. The term "mosfet" refers to the electrical architecture of the power supply that drives the amp. Mosfet power supplies are the most common because they're cheap and versitile. A big amp (not inside the head unit) just has more mosfet power supplies lined up. An external amp might have 4-30 mosfet power supplies, where a head unit only has 1. So, a head unit can technically have an amp built in, but people don't really talk about them because they're so small.

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1 Answer

Why does my MCS sub 10 not turn on?


Is that the right part number, MCS 10, and not MCS100?

The MCS systems use a basic sub which is matched to the satellites. There's very few controls other than level on the MCS100. So as long as the power light is illuminated the there's very little other than the volume control that could be set wrong on the sub. So what it comes down to is either

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As a quick test, unplug the sub cab from the amplifier/receiver end. Switch on the sub and turn the volume down all the way. Briefly put your finger across to short the RCA/phono tip and ring. The sub should make a buzzing sound. You now know that the sub is working and the cable appears to be okay

Switch off the sub and reconnect the phono/RCA to the sub out socket on the receiver. You now know it is connected correctly.

Go in to the receiver's menu and check the speaker settings. Is subwoofer present? Yes/No

Are the satellites all set to Small? (they should be with this system)

Are you playing a 5.1 source in DD or DTS to ensure that the sub gets a signal? Play a BD or DVD.

On the speaker balances, is the sub channel set to 0dB?

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Sometimes silicone if its a very small rip. Usually, junk it and get a new one

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I have 2 Kenwood 12" Subs and the outer foam edge


i think it could be time to throw them away ,unless their is any specialist type place close by that can recone them for you ,i have had some success in the past with thin rubber matting that was for repairing a dingy and cutting it round so it fitted then bonding it in with two pack araldite but it sounded a bit muffled to me but the cars owner was happy as he played it so loud he was no doubt tone death

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The foam surround on my subs are cracked and torn. I need them repaired. Would it be more ideal to buy new subs or get these w7's repaired?


wow i won't throw them away or anything like that. You can always go down to your local JL Audio dealer to see how much to refoam the subs. Lot cheaper then buy new ones..... That's the way i would go.. Hope this was helpfull

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3 Answers

Speaker cone is rip


that sucks. Expensive sub. If its under warranty go that route.

If its not under warranty, you can repair it with epoxy.

Go to Lowe's and get a 2 part epoxy. Mix it and seal up the crack with the epoxy. Put it on thick because the sub is going to vibrate it like mad and it needs to hold up.

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1 Answer

I got a lil tear on the foam under my 12' alpine sub by where the terminals are...how do i patch it up or with wut??


a flexible adhesive like clear silicone adhesive will work, just don't glop it on too heavy or it will unbalance the weight of the cone and shorten the life of the sub. Dont use an adhesive that dries to a hard state or it will actually tear the foam more. Let me know if that helped:) Thanks

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410$ plus shipping to have JL fix it for you or I can sell you a brand new sub with full factory warranty for about $ 475 shipped to your door

JL will replace everything but the magnet and basket and you still wouldnt have a warranty
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http://www.simplyspeakers.com/speakerrepairinstructions.htm
go with the repair .those r good subs,very expensive. i repaired a pokl 12" sub cone and surround foam. never had a problem. save me 300 bucks.the cone you can fix by using the same material that it is made off.if paper use rubbeer glue. if plastic ,i used a 2 part epoxy,airplane glue.didn't look pretty but did the job.rating please

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hi there mate. which foam are you talking about, in the box or on the actual sub? you should be able to remove either to be able to get to the drilling holes. send some photoes if you want to ajd_pimp@hotmail.com and i can have a further look.

cheers,
adam

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