What is the optimum impedance of the subwoofer output? 4 ohms, or 8 ohms?
2001586
Hi Aubrey, this amp is rated at 68 watts at 4ohms. That is peak output. If you use an 8ohm speaker, you will cut the power in half= 34 watts. To get the full advantage of the subwoofer capability, you should use a speaker rated at 4ohms. If you have a speaker that is not marked, you can easily measure it using any mulitimeter that has an ohm setting. I hope this helps you.
275074
I have 8 ohm B&W; cs1 speakers and use 6ohm without an issue. I'm not sure why they didn't design it for 8ohm
358012
Based on the most technical of measurement tools, ie. SPL meter on my phone and frequency stepper on YouTube, I estimate right on 50Hz. Possibly as low as 45Hz but unlikely. I'll get back to you with a better idea in a few weeks when the sub arrives. Edit: after a long wait the sub arrived. It seems the optimum crossover for a sub is roughly 50hz. If you are looking for the crossover between the 8" subs and the horn tweeters then the answer is 2000hz.
824861
these subs hit hard for the price man.. 2ohm or 4 ohm DVC's ?? id wire them at 4 ohms.. might be pushing it. since they are only 600 rms peak subs..
365310
Sorry! This question exceeds my pay grade. I've always used only 4 ohm, only 8 ohm or switchable 4 to 8 ohm speakers together.
1796166
I hooked it to system with 8 ohm impedance and works perfect!However, buy an oversized electrical wall box or an open audio box, otherwise unit fitting will give you headaches.
1022061
My understanding is 2 OHM is better. I would however recommend you install the amp to get the proper sound that the speakers are capable of. I have not done this but I need to.
907653
You need to stick with the same ohms. If you go with 4 or 6 ohm, you will transfer less power to the sub and it will sound bad.
86977
Hi, you should have no issues at 8 ohms. Used a dozen of these for an install last year and they sound great, and the moveable tweeter makes a difference
1851863
It depends on the speakers, most consumer speakers are 8 ohm and would be connected to the 8 ohm outputs. Some commercial speakers are wired in series and are equipped with a 70 volt transformer and would use the 70 volt connection. Most speakers have the impedance printed on them.
2251704
from my understanding your speakers ohms should not be lower than your receiver/amp. This will have your receiver working overtime to power those speakers which may casue overheating. For a 8 ohm receiver the lowest I would go would be 6 ohms; I think 4 ohms is pushing it.
1515691
This sub can only be wired for 2 or 8 ohms since there are two 4 ohm coils. If they are series it will be 8 ohms and if they are paralleled it will be 2 ohms. The directions for this sub recommends a 1.75ft^3 for a ported enclosure ( with a 3" port 4.76" long) or a .75ft^3 sealed enclosure. I would have to know your boxes port size to comment on the enclosure you have.
2032113
4 Ohms. So, you can either run them at 8 Ohms mono (wired in series), or 2 Ohms Mono (in parallel). Up to 250 Watts RMS. @4 Ohms, I have been able to pretty much bottom out mine with an amp that does around 150-180 watts. In the documentation JL provides, I believe they placed 200 watts as "the sweet spot". For best results, I'd probably get a 300-500 watt Mono subwoofer amp to run 2 as most can handle very low impedance loads. Also the CP208 is a long microbox with 2 of these 8 inch drivers built in. You might go for that instead and save a few bucks. The box is rated 2 Ohms.
169388
2 ohm, I have dual 12s both running 2 ohms with a 3000 watt amp, sounds amazing and I'm still breaking it in, but 2 ohm in my eyes is for more than one sub to divi the power more equally
141523
The receiver can easily drive 4 ohm speakers. The RMS power rating of 80W applies to 8 ohm speakers, so the power output for 4 ohms will be somewhat greater.You can change the speaker impedance from the default setting of 8 ohms to 4 ohms using the "Advanced Setup" menu as described on page 37 of the owner's manual.
234300
Should be 8 ohms...not going to see lower then that unless you get the really high end audio stuff. Typically...even still 8 ohms is about the standard.
907652
Well the impendance is very important to have correctly matched between the sub and amp. Since your amp is for 2 ohms, you need a 2 ohm sub. Or get a 4 ohm amp to be comparable with this sub