Question about Q-Logic QLT-.3508SS Car Subwoofer

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Sub doesnt sound loud

Hi this was the first time i bought a car sound system i bought a monoblock pioneer gm7300 800 watt amp and 7500 mtx subwoofer . i got so angry because i spent heaps of money on this sound system and it doesnt even sound loud.

my friend bought a cheap $100 pioneer subwoofer and when i listen to his sub i have to close my ears from the vibration and sound

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Re: sub doesnt sound loud

Are u sure your gain and bass freq are all level?

Posted on Feb 28, 2013

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Re: sub doesnt sound loud

Try to change subs with your friend to find out if the problem is on amplifier or on sub wofer

Posted on Nov 21, 2007

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2 MTX Thunder Problem.. Bridging?

Is there a option on the chanels that say ''Bridged''? If so, you can hook the subs up in parellel or series to get different ohm loads. Usually the lower ohms, the more power amp puts out. Those subs can handle 225 watts RMS whitch means the power it can handle constantly. If the amp gives more than 225 watts RMs, you could be at risk of blowing the sub. If you could give me the model # of the amp, I can be of more help.

Feb 11, 2010 | MTX Thunder 4500 T4510-04 Car Subwoofer

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How can i connect 2 12''s pioneer premier too an jl audio amp n make the bass loud???

Hello m1k377060,

Having your subs in well-designed and constructed enclosures will make as much or more difference in their output than how you connect them to an amp.

The TS-SW1241D's are single voice coil 4 ohm shallow subwoofers that are rated for 350 watts RMS. For maximum loudness, your JL amp needs to be 2 ohm stable and capable of delivering 700 watts RMS into that impedance. Wire the subs in parallel for a 2 ohm load and maximum power from the amp.

Hope this helps.

Oct 09, 2009 | Pioneer Premier® TS-SW1241D Car Subwoofer

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Hi i have two 10'' jenson xs sub and they are about 6 years old and i was wondering wut amp size i should buy to run them.

I believe these are 4ohms, if so buy a 2ohm stable monoblock amp, that puts out 250-300 watts RMS, and connect your subs to it in parallel, don't pay attention to peak watts, look at RMS watts, or continuous watts. If they're 2 ohms, buy a 2 ohm stable 2 channel amp that puts out 125-150 watts RMS per channel, and 250-300 watts total or bridged RMS output. And connect them normally, on sub per channel... hope this helps, as far as brand recommendations, MTX, pioneer, Alpine, Kenwood... Good luck

Sep 20, 2009 | Jensen XS-1010 Car Subwoofer

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I have one mtx t4510-04..what amp do you

Hello jandytaala,

The recommended power range for you T4510-04 is 112.5 to 225 watts RMS. So you need a monoblock amp within that range. You could go up to about 300 watts RMS, but watch the gain and don't try to get too much from a single 10" sub.

The Orion Cobalt shown here would be a good match and is only $139.99. For another $60, the Alpine MRP-M500 will output 300 watts into 4 ohms.

Hope this helps.

Aug 28, 2009 | MTX Thunder 4500 T4510-04 Car Subwoofer

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Subwoofers won't work and they are brand new


I've got a pair of these MTX's subs powered from a Fusion 450 watt 2-channel amp. For the price, they are great. By the way, they are 4-ohm.

My first suspicion would be that something in the first incorrect wiring damaged either the amp or the subs. Can you explain specifically what the "installing the subs incorrectly" means? Was the amp output shorted out at any time or was it operated without a load? Either of these conditions will fry an amp and sometimes, the protection circuitry doesn't work either.

First make sure that your amp is still working. Check both the primary power fuse, usually located near the vehicle battery, and the fuses on both sides of the amp. Make sure that when you turn the system on, the power light comes on steady (blinking is protection mode). Test your subs one at a time on a speaker output.

Mar 29, 2009 | MTX Thunder 4500 T4510-04 Car Subwoofer

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Is a 15 w3 d-4 better then a jl audio w3-d2


All of the JL W3 subwoofers are essentially the same. The "d2" and "d4" suffix refers to the voice coil configuration. "d2" = dual two ohm coils, "d4" = dual four ohm coils. Depending on the number of subwoofers in your system and the amplifier(s) you are using to power them, one or the other of the configurations may be "better".

Generally, you want to have the load on your amp to have the lowest possible impedance consistent with the amps capability to operate properly with that load. It's normally referred to as "impedance matching". Greater power (watts) is produced, and louder sound, when the amp can deliver power at a lower impedance.

If your amp is only capable of supplying power at 4 ohms, you want to make sure that the configuration of your sub(s) represents a 4-ohm load. If the load is higher, say 8 ohms, then your amp can only deliver about half the power of which it is capable. It would be OK to run them a 8 ohms, but they would not be as loud. On the other hand, if the load was lower, say 2 ohms, your amplifier would soon overheat and go into protect mode.

So the trick is to first decide on how many subs you want. Then choose an amp/sub combination that "matches".

The DVC or dual voice coils just gives you more options in selecting and configuring. Say you want 2 subs and you are going with the 15w3 d-2. Your amp is the JL Audio G-MAX monoblock. The amp puts out 1200Wx1 Chan. at 2 ohms or 600Wx1 Chan. at 4 ohms. You would wire both of your subs voice coils in series making each sub 4 ohms, then wire the 2 subs in parallel to your amp making the final load 2 ohms, the best "match" for your amp.

Mar 29, 2009 | Jl Audio 15W3-D4 Car Subwoofer

1 Answer

Is amp big enough for speakers


To run 2 subs, the amp would be a little small. The subs will run OK, they just won't be very loud.

It's usually better to compare and match up the RMS power rather than the peak power. The Sony XS-L10P5B sub has a peak power handling figure of 1200 watts, but the RMS is 300 watts. The Sony XM-ZZR3301 monoblock amp puts out 1100 watts peak, but only 330 watts RMS. They would work great together, 1 sub, 1 amp. But if you add another sub, each one would only be getting about 165 watts. They'd work OK, just not as loud as they could be.

Hope this helps!

Mar 28, 2009 | Sony Xplod 1100 Watt Max 10" Subwoofer,...

1 Answer

Mtx 7500 sub

what amp are u usin?What enclosure 4 speakers do u have?Might not have enouigh voltage 4 the amp.How big are the wire for power 2 amp?what ohm are you playing ,is it compatible to the woofers.Need more info.Model and makes please,but 1st a rating.

Jun 16, 2008 | MTX Car Speakers & Subwoofers

1 Answer

Subwoofer stops working after awhile, but only one

it sounds like u blew them or the voice coils could be messed up here is one way to check take the woofer out of the box and look at the coils it should be ornge and then smell it if it smells like fire it might be going bad thats the reson it is frezzing like that let me no what happens and please rate me

Apr 07, 2008 | Sony Xplod 1100 Watt Max 10" Subwoofer,...

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