If I have a 10" 4ohm sub that is rated for 275wrms, and a 12" 4ohm sub that's rated for 300wrms, can I wire them in parallel and safely connect them to an amp rated for 600wrms@2ohm? What would be the upper & lower limits of "safe" wattage for this setup?
Replies (4)
trunkisloud on 05/2/2007 21:39:36
im not thinkin tis a good idea..the max power of each is different im sure........therefore you may sufficiently power one while the other is maxing out...i could be wrong but have a few others on here check it out,..just my thoughts.
swez on 05/2/2007 22:17:07
Yes, you can do this as mentioned. The trick is giving each sub the correct airspace to work in. As for power differences, these are pretty close to same RMS power, so it should be OK. Just go easy on the max power you toss at the 10". That is your limiting factor... The weakest link in the chain determines the usable strength of the chain fall huh?
Swez
gearhead on 05/2/2007 22:28:51
The subs are in sealed boxes that are on the small side of the recommendations. Also, the 10" sub has 2 ratings, the 275wrms, & 375wrms w/liquid cooling. I'm not going to be cooling it, but I'm not going to be hammering on it for extended periods either.
I do have another question though. If there is 600w available, and one sub is rated at 250w and the other is rated a 350w, would the 350w sub use 350w of the available wattage, leaving only 250w for the other sub? I know that you can put a 40w, 60w, & 100w light bulb in parallel on a 120v/20A circuit (2400w, correct?), and each will only draw the amperage required, without blowing any of them. I'm assuming speakers don't work that way?
swez on 05/2/2007 22:59:10
Power draw is dictated by the ohmic load of each speaker. The SPL output will vary from sub to sub, depending on efficiency ratings of each sub.
If this were my call, I'd probably use a smaller sealed chamber then recommended on the 10" sub. Here, the power handling and low bass is restricted by the box. The 12" sub can use a larger sealed chamber and will handle all the deep lows and can take the power too.
Yes, light bulbs are similar as the lower the wattage rating, they use higher resistance elements and draw less current and thus, less output. It's similar to speakers, but amps have specific ohmic load limits.
Swez
Replies (4)
trunkisloud on 05/2/2007 21:39:36
im not thinkin tis a good idea..the max power of each is different im sure........therefore you may sufficiently power one while the other is maxing out...i could be wrong but have a few others on here check it out,..just my thoughts.
swez on 05/2/2007 22:17:07
Yes, you can do this as mentioned. The trick is giving each sub the correct airspace to work in. As for power differences, these are pretty close to same RMS power, so it should be OK. Just go easy on the max power you toss at the 10". That is your limiting factor... The weakest link in the chain determines the usable strength of the chain fall huh?
Swez
gearhead on 05/2/2007 22:28:51
The subs are in sealed boxes that are on the small side of the recommendations. Also, the 10" sub has 2 ratings, the 275wrms, & 375wrms w/liquid cooling. I'm not going to be cooling it, but I'm not going to be hammering on it for extended periods either.
I do have another question though. If there is 600w available, and one sub is rated at 250w and the other is rated a 350w, would the 350w sub use 350w of the available wattage, leaving only 250w for the other sub? I know that you can put a 40w, 60w, & 100w light bulb in parallel on a 120v/20A circuit (2400w, correct?), and each will only draw the amperage required, without blowing any of them. I'm assuming speakers don't work that way?
swez on 05/2/2007 22:59:10
Power draw is dictated by the ohmic load of each speaker. The SPL output will vary from sub to sub, depending on efficiency ratings of each sub.
If this were my call, I'd probably use a smaller sealed chamber then recommended on the 10" sub. Here, the power handling and low bass is restricted by the box. The 12" sub can use a larger sealed chamber and will handle all the deep lows and can take the power too.
Yes, light bulbs are similar as the lower the wattage rating, they use higher resistance elements and draw less current and thus, less output. It's similar to speakers, but amps have specific ohmic load limits.
Swez
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