Question:
have a Legacy LA1088 4-Channel 2000 Watt Bridgeable Mosfet Amplifier and i'm wondering, if i was going to only hook up 2 subwoofers, how would i go about getting all 2000 watts to those speakers,well not all 2000 but i mean (2X1000 watts per channel?)and if i was going to do that what should the speakers RMS be? well what should the rms be period if i was still only hooking up 2 speakers,is there anyway also to hook up those 2 speakers on all 4 channels? and if so how should i go about seeing what the RMS the speaker should have when i shop. if you have any information or diagrams that picture hooking up 2 subs on 4 channels, and/or how to hook it up and get all the power of the amp on the 2 channels, that would help, please share! it would be greatly appreciated!
Additional Details
7 hours ago
ok ok, sooo the legacy amp sucks my ***, and i won't get much out of it,but when u say get a 4 ohm speaker on 2 channels? how do i know the speaker is 4 ohms? does that have to do with how m
Answers:
What size amp fuses (30 or 60) do I need in my fused distribution block on a 1000 watt system?
See my site for the basics http://spkrbox1.spaces.live.com...Will a subwoofer crossover help?
Most speakers will say what their ohm rating is on the box or on the back of the magnent. You're going to want two, four ohm subs. Since you have a four channel amp with four inputs you're going to want to combine two inputs two each other. IE front left and right and rear left and right. then balance it as best you can. Now you have a two channel amp and you can then start plugging in the speakers. To do this correctly just plug in your positive lead to your rear right positive output and the negative to your rear left negative. This is the only way I know of to get the most power out of a legacy amp. Oh yah do the same thing on the other side for you other sub except using the front right positive and the front left negative. The result is that your one amp is fully powering to subs in stereo. As far as RMS level. Get subs that are nice. Not so nice that if they get yanked you'll be hurting. Rule of thumb is to match your subs with the power output of the amp. Most amps are rated to the point where they explode. IE "My amp rocks, it can put out 5000 watts." That may be fine but it starts sounding like crap at 750. It just happened to max out at the factory at 5000 shortly before it blew up. So that must make it a 5000 watt amp right?, even though it's only good for 750.Another rule to keep in mind is that if you plan on driving your amp and subs hard just remember if you amp begins to spew out tones and frequencies that are effectively distortion you're going to want a speaker that can handle all of that deadly noise. It's better to over power than it is to under power. This is called headroom, and you want plenty of it. I hoped this helped a little bit. Once you get into it, it won't seem so daunting. Good Luck.
Subwoofers are available in different impedance ratings; the same model may be available as a 2-ohm, 4-ohm or 8-ohm option. Dual-voice coil subwoofers allow a wider range of impedance options with a single subwoofer. If you plan to use two subwoofers on that amplifier, the simplest way is to find single voice-coil, 4-ohm subs rated for at least 200 watts RMS. You will find many options in this category. If you use dual voice-coil subs, you'll need either dual 8-ohm voice coils or dual 2-ohm voice coils; both of these options are less common than dual 4-ohm voice coils, which won't match well with your amp.
As far as how to wire them, you can download an owner's manual for your amplifier at www.legacycaraudio.com.
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