Okeedokee, stumbled across your little forum and figured I'd give you guys a shot at solving a little question I've got.
Recently I purchased some new subs, because I was using 2x 12" JL Audio w1's, rated at 150 watts, and 8ohms each.
They were running in parallel, but the reason I got new subs is because the foam surround on one of the subs was cracking horribly (the subs were a second-hand gift)
Anyways, I got new subs, but I still had this one JL Audio 12" w1 sub sitting in my basement.
My fiancé's younger brother asked me if he could have it, and I told him sure, but that I wasn't sure it would do him much good.
I've been thinking to myself tonight of a way to get a single 12" sub rated at 8ohms, with a single voice coil, to run at 4 ohms.
So now my question is, if I went to a local electronics store and purchased an 8 ohm resistor, and hooked it up on same wiring (in parallel) inside a box, would it work?
I assume that the amplifier would see a 4 ohm load, I could be wrong, maybe this solution wouldn't work at all?
I guess my other question is, if this solution would work, would the sub get the full wattage? Or would the sub only see half the wattage from the amplifier due to the plain resistor/??
Thanks in advance for any advice. This sub isn't amazing, but it's too nice to just throw away... It'll only be used in an old F150 anyways, more than enough for this kid...
Replies (3)
audionewb on 07/30/2003 08:39:59
I think if you just bought a resistor from the store it wouldn't work because the resistor wouldn't be able to handle the power going through it. But let's see what the other's have to say.
Swez on 07/30/2003 15:15:31
NG... the resistor will lower the ohms load that amp sees, but will absorb 50% of the amps power too. HD resistor is needed and not cheap either. Better to wire to amp as an 8 ohm load.
Do you still have the other sub with the damaged surround? If yes, there are surround kits that can be purchased and you can replace them yourself at a modest cost. Not hard to do... just patience and getting the proper size surround kit for your woofer.
Finally, if you have a HT system and need an 8 ohm sub, this might be an option to consider. However, if the surround is also worn, it will fail sooner or later as well.
Swez
Relax_The_Mind on 07/30/2003 16:18:19
Yes...8-ohm is fine for most every amp you just wont be getting all the power you want.
Then again it would be a lot more cost efficient buying new subs of course. Ive seen many JL subs go to waste from wear, tear and age (foam surrounds...). I wouldnt suggest using it unless ur future bro-in-law plans on buying a new sub. We can help of course finfing a good sub for dirt cheap.
RTM
Recently I purchased some new subs, because I was using 2x 12" JL Audio w1's, rated at 150 watts, and 8ohms each.
They were running in parallel, but the reason I got new subs is because the foam surround on one of the subs was cracking horribly (the subs were a second-hand gift)
Anyways, I got new subs, but I still had this one JL Audio 12" w1 sub sitting in my basement.
My fiancé's younger brother asked me if he could have it, and I told him sure, but that I wasn't sure it would do him much good.
I've been thinking to myself tonight of a way to get a single 12" sub rated at 8ohms, with a single voice coil, to run at 4 ohms.
So now my question is, if I went to a local electronics store and purchased an 8 ohm resistor, and hooked it up on same wiring (in parallel) inside a box, would it work?
I assume that the amplifier would see a 4 ohm load, I could be wrong, maybe this solution wouldn't work at all?
I guess my other question is, if this solution would work, would the sub get the full wattage? Or would the sub only see half the wattage from the amplifier due to the plain resistor/??
Thanks in advance for any advice. This sub isn't amazing, but it's too nice to just throw away... It'll only be used in an old F150 anyways, more than enough for this kid...
Replies (3)
audionewb on 07/30/2003 08:39:59
I think if you just bought a resistor from the store it wouldn't work because the resistor wouldn't be able to handle the power going through it. But let's see what the other's have to say.
Swez on 07/30/2003 15:15:31
NG... the resistor will lower the ohms load that amp sees, but will absorb 50% of the amps power too. HD resistor is needed and not cheap either. Better to wire to amp as an 8 ohm load.
Do you still have the other sub with the damaged surround? If yes, there are surround kits that can be purchased and you can replace them yourself at a modest cost. Not hard to do... just patience and getting the proper size surround kit for your woofer.
Finally, if you have a HT system and need an 8 ohm sub, this might be an option to consider. However, if the surround is also worn, it will fail sooner or later as well.
Swez
Relax_The_Mind on 07/30/2003 16:18:19
Yes...8-ohm is fine for most every amp you just wont be getting all the power you want.
Then again it would be a lot more cost efficient buying new subs of course. Ive seen many JL subs go to waste from wear, tear and age (foam surrounds...). I wouldnt suggest using it unless ur future bro-in-law plans on buying a new sub. We can help of course finfing a good sub for dirt cheap.
RTM
Copyright ClubKnowledge 2009 * All Rights Reserved
