I ordered a set of 4ohm subs and received the 8ohm model, does it matter?

[Jacob07]

Title says it all. I ordered two kicker comp 05C104s and after being jerked around by the vendor I received two 05C108s three weeks later. I've been trying to contact the vendor but they have not responded.

I plan to run them bridged at 2ohm. Does it matter that they are rated 8ohm instead of 4?

Thanks

 

[89vert]

It does matter, because when you try and run them bridged, the amp will see 4ohms instead of 2ohms. If you do end up running 4 ohm woofers in parallel (i.e. at 2 ohms), make sure that your amp can handle that bridged, because not all amplifiers are rated to do that, sometimes they are only able to run at 4 ohms when bridged.

 

[iskwezm]

you could always add 2 more subs to get 2 ohms stereo

 

[Jacob07]

you could always add 2 more subs to get 2 ohms stereo

...and there goes what little space I will have left in my trunk

I guess I'll keep bugging the company. Had to pay through Paypal but they won't do anything because the company did ship the subs.

 

[KWIK9550]

Not necessarily a bad thing. Your power output will be cut in half, but this may not matter. A doubling in power is equal to a 3dB increase. Now, many 8 ohm drivers are more "efficient" or sensitive than their 4 ohm counterparts. Compare the two, if you find the 8 ohm versons to have a sensitivity double or close to that or the 4 ohm drivers, then they should provide the same output with half the signal, in effect having the same output potential with half the power. This is actually a plus as you will draw less current, run cooler, and more efficiently.

 

[Jacob07]

Hmm... Thanks Kwik 9550!

I may just stick with the speakers then. My amp is a Jensen JPA1300M and it claims to put out 400W at 2ohm and 300W at 4ohm so it looks like its only a 25% loss to run at 4ohm.

Sensitivity:
4 Ohm: 86.8
8 Ohm: 87

.2 doesn't seem like much but I'm not familiar with most of this.

I don't expect that I will ever get a response from the company so if the result will be the same I will stick with the 8ohm speakers.

 

[S&B]

jensen amp

 

[Jacob07]

Haha...are they that bad?

 

[KWIK9550]

Not the best. You can find better for the money, but that doesn't matter. If you're happy with it, that's what counts.

 

[Jacob07]

I'm liking your optimism

I haven't hooked it up yet so I don't know how well it works but I'm sure after getting bass from a 4 or 5-inch woofer in my backseat for the last 8 months anything will impress me.

Still have to build a box - waiting to get a sheet of MDF.

 

[TheUser]

if they shipped the item to you, you could possibly get them for mail fraud - especially if they won't contact you. It would be alot of hassle though, so if you like the 8ohm subs, maybe just deal w/ it. That's one of the bad things about finding good deals online - you might not get the service you would like.