Hello all...
Have a technical question for any experts out there. I have a Hifonics TX 1505D mono amp.
RMS Power Rating:
4 ohms: 500 watts x 1 chan.
2 ohms: 1000 watts x 1 chan.
1 ohm: 1500 watts x 1 chan

I am looking to match it up with (2) Subs. Looking into the Kicker CVT which are SVC subs and 400RMS/800Peak each.

My question is what Ohms do I want the subs (2) 2Ohms or (2) 4Ohms and how do I wire them up to get the best load?

Was doing some research and think i found out that it would be the best for my amp to run a 1Ohm load. Any help is much appreciated.

 

you cant run those kickers at 1 ohm...? Id say 4 ohm is the way to go...

 

so you suggesting I get (2) 4ohm and wire them run them at a 2Ohm load? Like this?

 

yezzir, thats a pretty typical setup, thats what I am running at the moment...

 

Then what do they make the 2Ohm subs for? Guess its for a setup with a 2 channel amp and not a mono?

Also. Thanks for the input.

 

It looks like your best bet is to get two Single 4 ohm subs, wire them in parallel which will give you a single 2ohm load. This will get you 500 watts into each sub (which is only 50 watts more then the reccommened RMS rateing utilizing your specific amp)

If you got two 2 ohm subs and did the same, youd have a 1 ohm load...which your amp would put 1500 watts into that single 1 ohm load...which means 750 watts into each sub...which it a bit more then they are recommended at.

 

Yeah, I just thought that it was better for the amp to run at 1Ohm, less overheating and more efficient. Will they be getting 750 all the time, or only when they are turned up all the way? Plus you cant really take the amps "real" output, from what the specs say can you? Dont they usually run less then what they tell ya. so really 1500 watts may be 1200 for 600 a sub? Wouldn't that be ok?

 

Actually the lower ohm you run an amp, the harder it is on the amp and it will run hotter pushing a lower ohm load, but Yes you "usually" get more watts the lower your ohm load drops. No they will not be getting 750 all the time..wattage will be varible as your volume goes up...but many things play into the equation...like how high do you set your gains...how much EQ boost are you giving your subs...etc. Also....how will you know when not to go any higher on the volume to not let the amp give more then 450 watts if you were running it 1 ohm? Basically what im saying is...if you ran it 1ohm...then you run the risk of over powering your subs. Well...personally i like to buy a high quality amp that i nkow im getting what the spec sheet says ( if not even a little more wattage) do you wanna take that chance with your subs and amp? its up to you. you can actually find out how many watts your amp is putting out by measuring the output side. I'm not going to go into specifics on how..but you can google it. Also....going from 500watts a sub to 750 watts a sub ...your not going to hear the diffrence..and if you say that you can...well then i hope your working in the audio industry

 

Awesome stuff. Thanks everyone for the input.

 

yea good info...exactly what i would do...you dont typically run subs at 1 ohm unless they are specifically designed to run at 1 ohm such as my SSA's...also most amps are not 1 ohm stable, and if they are they are typically pretty pricey...my sundown 2500.1 is a 700 dollar amp

 

Options. There are so many ways to wire Subs and so many different install situations. Some systems use many small subs. Others might have just 1 huge sub like an 18".

Maybe an install has room for only 2 subs. How can you get a 1 ohm load from 2 subs if they only made single 4 ohm voice coils? You can't so that's one scenario where two 2 ohms subs would be needed.