Originally Posted by dlplover
uni-panther is wrong. Most subwoofers I've seen have LFE inputs now, even in the $200 range. If it shows it has a LFE input, it has an LFE input. Many subwoofers have them (at least any of them I would consider buying in the price range.
Some subs without a dedicated LFE input will let you use the standard input by just feeding 1x rca to it instead of 2x (ie just one channel) and then turning the crossover on the subwoofer all the way up to max to bypass the internal circuit. You need to check around for the specific subwoofer if it doesn't have LFE whether it has this functionality. It is not
simply a matter of turning the crossover high enough that you're pushing control of the full range to the receiver, which sounds terrible. Some subwoofers without LFE inputs are designed such that when you have 1xrca and the crossover maxed it will actually bypass its own internal circuit and act as an LFE (for this reason it has to be maxed
on the crossover as anything less than turning it all the way to the right will keep it on the internal crossover rather than LFE). This is mostly for subwoofers within the past couple years and you need to check either online or with technical support from whichever company you're looking at. It's mostly cheaper subwoofers that are this way (or possibly older ones) so generally I'd say to stay with a sub that has a dedicated LFE, but if you're just looking for a subwoofer with reasonable sound and not very good sound, those kind of subs will sound fine "LFE"-ed.
I'll post back when I have a chance with a bunch of good choices for subs in the $180-350 range that have LFE inputs. The rest aren't necessarily bad, but I don't really have the time to check on which models can be "LFE"-ed or not. I know some can, some can't. If they can't, they aren't worth your time. If they can, they represent be a good budget value if you aren't looking for something fancy.
How am I wrong? I didn't say there are no LFE inputs. I said "most subs" have line level ins and speaker level ins but usually drop the LFE labled input. From all of the models I look at on Hsu,SVS,Epik, eD, Paradigm, JL-Audio, and others I hardly ever recall seeing a strictly labeled LFE input. Maybe on ultra cheap $100 subwoofers but across the board it certainly isn't the norm.
Also when you say if a sub doesn't have an LFE input and you turn up the X-over knob to the max you need to check to see if it has that function. What do you mean? I'm sorry but if you have a X-Over knob there is no checking to do. You are turning it up so you can use the bass management on your AVR. LFE inputs are already bypassing low pass filters while line level ins are controllable. You are simply switching to your AVRs bass management.
How can you possibly say that giving control to your AVRs bass management "sounds terrible" Almost every single person with a full sound system uses their AVRs bass management. They will use the X-over on the AVR and by no means does this "sound terrible" I don't get what you are saying there at all.
You make this sound like LFE and line level ins are two completely different listening sources but they are not. LFE automatically bypasses the low pass filter while line level ins don't.