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slim
Dodge Dakota
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1/16/2004
21:25:47
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 Subject: sub wiring question
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i just bought a 800 watt 2-channel cyclone amp. i will be pushing 2 10s with it.the box says that the amp is stable to 4 ohms in bridged mode. i plan to run the subs in a series and bridged. should i but 2 ohm or 4 ohm subs? also, the speaker are rated for 300 watts rms and 600 watts peak. if i wire them like that would that amp be enough for the subs?
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DSW
Dodge Dakota
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1/16/2004
22:53:48
|  RE: sub wiring question
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2 - 2ohm subs wired in series will produce a 4 ohm load, so get the 2 ohm version. Be careful, if they are wired in parallel it will be a 1 ohm load and the amp won't like it.
"will the amp be enough for the subs" ,Yes and no, it will be enough and then some. Better question would be, will the subs be enough for the amp.
If the amp is rated at 800W RMS with 2 300W rms subs you run the risk of frying the subs. However, if the amp is rated at 800W peak or max it's RMS out put is more like 400W and it will be fine with the subs. I fried a couple of 300W woofers, Polk & MTX, with an old school RF Punch 150 amp, think it was pushing 350-400W bridged. It's better to have subs rated a little higher than the amp's rating than the other way around, since good amps are usually under rated.
My setup is 2 RF subs rated at 200W RMS with a RF 301S amp rated at 300W RMS bridged. The amp's birth sheet says that it tested out at 376W, way over it's rating, but OK for the setup since the pair of subs can handle 400W RMS.
You might want to go with a set of subs rated at 400-500W RMS so they don't get fried. Well, that's if the amp's 800W rating is RMS and not peak.
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DSW
Dodge Dakota
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1/17/2004
01:52:36
| RE: sub wiring question
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Aww Slim, I just looked at the specs for the Pryamind Cyclone 800W (peak) amp and your going to be way safe running 300W RMS subs with this amp. They might say that this is an 800W amp, but it's rated at 40W/ch 4ohm and 60W/ch 2 ohm. It's going to put out about 120W bridged running 4 ohms, you'll have to look at the spec sheet to verify the bridged RMS output.
Your question " will this amp be enough for the subs" makes sense now. I would have to NO, it won't be enough for 2 300W RMS subs. If you bought the amp locally see if you can return it to get an amp that's closer to the RMS rating of the subs. 120W pushing 2-300W subs might not sound that good. What brand and model are the subs?
I looked at the Cyclone 1600 W amp, $90 on Ebay, and it puts out 150W/ch RMS at 2 ohms, about 300W RMS bridged at 4 ohms. Bad thing, the RF 301s that I have is rated at 300W bridged at 4 ohms $95 on Ebay, $105 shipped. The RF is also smaller and easier to install in the truck, got mine under the drivers seat.
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slim
Dodge Dakota
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1/17/2004
09:36:17
| RE: sub wiring question
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i knew i shouldnt have bought that thing. well, yesterday i pushed 2 kicker comp 15's with it each rated at 250 watts rms. they slammed pretty hard all night. but i think those 15's can slam alot harder. i am going with 2 kicker comp vr 10's.
i think that i will go exchange that amp.
but shoudnt it be enough to push two 10's with 300 rms each if it could push two 15's at 250 rms each
stan
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DSW
Dodge Dakota
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1/17/2004
17:38:47
| RE: sub wiring question
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If your happy with how the amp sounded with the 15's then you should be good with it on the 10's. The 10's would sound better, or at least be louder with an amp closer to thier RMS rating, like an amp that's rated for 400W-500 RMS. If your happy with the bass output then you made a good buy, keep it and hook it up.
Some people like it louder than hell, personally I just wanted to add some bass and make the stereo sound clean, no max SPL stuff, Not saying it's not loud, but I like clean over loud. The most important thing is to balance the subs with the mids and tweets. If you don't have the mids and tweets amped you probably don't want to go with a bigger amp. Stereo's sound like crap if the bass is blaring over the rest of the music and all you hear in the car is BOOM, BOOM and nothind else. Shoot for 2/3 to 3/4 of your power for the subs, 100W for the mids and tweets and 300W for the subs or 50W/150W. With the amp you have, rated somewhere like 120W RMS, the mids and tweets shouldn't get overpowered just running them off a decient head unit pushing 40W. I have a 50Wx4ch mid/tweet amp and a 300W sub amp, the mid/tweet amp has the gains turned down to balance with the subs.
Did the spec sheet for the Cyclone amp list the bridged RMS output?
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slim
Dodge Dakota
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1/17/2004
20:48:48
| RE: sub wiring question
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i decided to buy a better amp. but yea the spec sheet said 120 watt rms bridged.
stan
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