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Message Forums Car Stereo Message Forums > Amplifiers > I hate ohms....
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Doug78
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  I hate ohms....

i got a Mtx roadthunder 202 amp. I have two 4 ohm subs. At two ohms it puts out 75x2, at 4 ohms it does 37.5x2. Can i get the 75 watt output into each sub?(100 rms subs)

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New Post 09-17-2005 11:35 PM
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VladTepes
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Ummmm.. don't think so... might work if it was ony one sub... 2 channel amp, right?

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New Post 09-17-2005 11:38 PM
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Doug78
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yes two channel amp.

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New Post 09-17-2005 11:42 PM
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Doug78
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http://www.mtxaudio.com/caraudio/products/amplifiers/roadThunder202.cfm theres the link to the amp, could someone just tell me the most power i can get to my subs?

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New Post 09-17-2005 11:43 PM
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VladTepes
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 RE:

quote:
Originally posted on 09-17-2005 by Doug78
http://www.mtxaudio.com/caraudio/products/amplifiers/roadThunder202.cfm theres the link to the amp, could someone just tell me the most power i can get to my subs?

I would better just get rid of one sub, and bridge the other one... or get another amp... I definitely don't think ur subs are 100wrms...

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New Post 09-17-2005 11:49 PM
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Doug78
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it say on the back they are, they are pretty old.

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New Post 09-17-2005 11:51 PM
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VladTepes
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 RE:

quote:
Originally posted on 09-17-2005 by Doug78
it say on the back they are, they are pretty old.

Hmmm... 100wrms one sub? Either get rid of both subs or just sell the amp, and get another one... a 4 channel amp would work for those subs, and I think u could find cheap ones, just needing around 200wrms

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New Post 09-18-2005 12:19 AM
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BatNastard
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I have the same amp. In theory you should be able to wire both 4Ohm subs in series and bridged for a total of about 75w RMS. So, you're still looking at the same power. I used two 8ohm subs in parallel, bridged, for 150W RMS or about 75W each.

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New Post 09-18-2005 07:16 PM
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btw1217
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 RE:

quote:
Originally posted on 09-18-2005 by BatNastard
I have the same amp. In theory you should be able to wire both 4Ohm subs in series and bridged for a total of about 75w RMS. So, you're still looking at the same power. I used two 8ohm subs in parallel, bridged, for 150W RMS or about 75W each.

What he said should work. Just make sure you wire them in series. If you do it in parallel and bridged, you'll put way too many watts on your subs and your amp will overheat pretty fast at 2 ohms bridged.

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New Post 09-20-2005 11:17 PM
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Doug78
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So hooking up two 4 ohm subs, would give a 2 ohm draw? overheating the amp? So unless i had two 8 ohm subs i cannot get more than 37.5 rms.

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New Post 09-21-2005 01:45 PM
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audeogod
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 RE:

quote:
Originally posted on 09-21-2005 by Doug78
So hooking up two 4 ohm subs, would give a 2 ohm draw? overheating the amp? So unless i had two 8 ohm subs i cannot get more than 37.5 rms.

If you hook up two 4 ohm subs in parallel, then you have a total of 2 ohms. That's too low for that amp to handle bridged so that's not an option. Hooking them up in series will give you an 8 ohm load and the amp can handle that, but it will cut it's power output in half. Like someone said above, you'd only get 75 RMS, which is the same 37.5 RMS per sub as just running them with one on each channel. But unfortunately, that's all you can do with those two subs and that amp. Run one per channel, or run them in series and bridge it. But running them in parallel bridged is not an option at all unless you want to risk frying the amp.

And if you had two 8 ohm subs in parallel and bridged to the amp, then each sub would get 75 RMS then. That's the only way there. Sorry. My advice is do what Vlad said, get rid of one and just bridge the other one to the amp for 150 RMS on one sub only. Set your gain to get no distortion and let it pound away with plenty of power on one sub only.

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New Post 09-23-2005 11:54 PM
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Nova
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1. Get a Good paying job.
2. Use the amp to power some good mids and highs
3. Use money collected from 3 weeks pay to buy a relatively more powerful amp.

Don't be afraid of holding on to money for a little longer than intended, you can spend $500 for a really good starters system, but yo always need more of something.

If you want a cheap hobby, I suggest collecting navel lint.

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New Post 09-26-2005 11:29 PM
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audeogod
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 RE:

quote:
Originally posted on 09-26-2005 by Nova
1. Get a Good paying job.
2. Use the amp to power some good mids and highs
3. Use money collected from 3 weeks pay to buy a relatively more powerful amp.

Don't be afraid of holding on to money for a little longer than intended, you can spend $500 for a really good starters system, but yo always need more of something.

If you want a cheap hobby, I suggest collecting navel lint.


Yeah and if you're gonna do something like that, I suggest getting a head start by raiding your clothes dryer's lint trap. Tear it in little pieces and mix in some Q-tip cotton and rub it on the dog's butt or under your armpits, or both even, to add a realistic smell to authenicate it and impress all your friends with your "year's worth" of collecting. You can even tear some of it in big hunks and say it came from a really fat person. Add in a couple of body hairs for appearance to make it look even more realistic.

Damn, I would never be this gross in real life, but right now it's after 2:00 A.M. and I'm slaphappy I guess.

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New Post 09-27-2005 02:15 AM
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xxwiredxx
Member

 RE: RE:

quote:
Originally posted on 09-27-2005 by audeogod
Yeah and if you're gonna do something like that, I suggest getting a head start by raiding your clothes dryer's lint trap. Tear it in little pieces and mix in some Q-tip cotton and rub it on the dog's butt or under your armpits, or both even, to add a realistic smell to authenicate it and impress all your friends with your "year's worth" of collecting. You can even tear some of it in big hunks and say it came from a really fat person. Add in a couple of body hairs for appearance to make it look even more realistic.

Damn, I would never be this gross in real life, but right now it's after 2:00 A.M. and I'm slaphappy I guess.


LMAO!!!! That's great Audeogod,I loved the post bro..Its 1:49 a.m. here and I just woke everyone up after laughing out loud..Thanks for the good laugh,I needed it.. :D

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New Post 09-27-2005 02:56 AM
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