Mmats pro audio amps will get down to half ohm stable safely...Kai

 

Just to start....I am a pro audio/video design engineer....


Yes reliabilty of amplifiers and speakers goes down as the ohm load increases....and just for clarity ohms is resistance so when i say an ohm load is increased the numbers are going down...

now....yes it is possible to hear distortion from lowering a speakers ohm rating in a subwoofer situation....this is all very dependent on the quality of amplifier selected.

Car audio is far different from pro audio but principles still exist in both and i have done custom car audio installations for 6 years now.

If you look at a amplifiers specification rating there should be somethign listed called THD (total Harmonic distorion)....i think you know where i am going with this.....

Depending on a trained ear someone can tell then difference at as little at 3-4%

The average listener however will be lucky to hear around 7-8%.

This applies in a subwoofer situation or midrange.

To answer the original posters question. Yes there are amplifiers out there that can do such a thing. These guys in the board would better guide you to those then myself.

With little knowledge in audio that you have increasing your ohm load will only but a nice fat whole in your pocket with not the results you are looking for.

This next follwoing statement is very generalized and is only for loud!

If you are looking for loud build yourself a ported box or better yet buy a bandpass box. Get some large subwoofers....what ever you can fit and look for ones with a high sensitivity rating....on top of that look at the rms rating of the subwoofer.....once you find what you like you match the speaker to an amplifier....

For car audio its very common to see a 1% THD so this wouldnt concern me at all.....if you see anythign more i would start to question it. Next buy an amplifier with a CEA power rating. This gaurantees you true wattage. Alot of companies use ....umm think of a nice word....phony....power claims. So sticking with somethign with this rating is a true and tride way. Now not all companies can afford this CEA stamp of apporval so there may be amplifiers on the market that are true and tride so you may have to take the advice of the people on boards such as this on the more umm smaller amplifier companies

Once a subwoofer is decided upon PM me and i will help you in wiring your subwoofers properly and pointing you in the right direction for an amplifier..

Hope this helps

 

two twin 15 cab under the stage, and a bunch of jbl loud speakers around all powered by a couple crown amps powering it all and the sound comming off a mackie mixer.

its not for surround sound its in the bar at the house. its a ton of my old sound gear from bands and such put together for rocking out in the bar (in the barn)

back on topic i'm running those crown amps at 8ohms and only making 500watts (so they wouldn't do what you need) and i can run you out of the room and away from the building if its cranked up... but thats pa power not car audio theres a huge diffrence

 

Crown and Mackie are garbage these days....no offense

 

none taken the gears is old but it still sounds good and does the job and its better than a lot of band rock out with and is tons of fun to play with. lol

 

running low impedence (ohms ) does not directly promote low bass! .5 ohms by industry standards is very low almost a dead short. i dont have the space on this page to get into all the dynamics at work here. so in a nut shell , its very in efficient, horrible on your charging system and poor quality output. im very confident you can run a particular amp sub enclosure combo @ much higher impedence and still achive incredible low bass! if you want more specific info feel free to e-mail jason at strokedv8@yahoo.com retired installer of 14 years.

 

I don't think anyone implied that a lower ohm load results in lower bass or a lower frequency. The argument is that a lower ohm load results in decreased sound quality.

 

Exactly. The ohm load has nothing to do with the notes it will play... Thats absurd.

But this is another common sense thing... I mean who honestly thinks that ohms dont have an effect on the power your amp produce?

 

ehh, ohm load does affect frequency output. but its a combination of the power supply, spyder resistance, and the coil design.

and im still waiting on that demonstration of the giant power output gain. on paper there should be, but after running a few more tests of my own, i still doubt the real world gain.