This is due to the fact that in LFE mode, the AV receiver or pre-amp has already taken care of this for you. The left and right inputs on a subwoofer are actually designed to receive a full range stereo source. This is when the crossover setting on the subwoofer would need to be calibrated according to the rest of the system environment. In this scenario, the subwoofer can filter out the low frequencies and then pass on the higher frequencies.
In almost all cases, a single RCA subwoofer cable would be the correct choice for your home theatre system. Some subwoofers may indeed display an increased volume output level of 3dB when a Y adapter or cable is implemented. However, this does not increase the maximum potential output volume of a subwoofer and only serves to bring the subwoofer 6dB closer to clipping the internal preamp and 3dB closer to reaching the dynamic output limit of the subwoofer.
The exact same effect can be gained from adjusting the volume control. Some manufacturers claim that their cables are directional must be connected to the source with the arrow pointing outward. With the exception of active cables these feature an integrated circuit , in almost all cases this is a false science. Mains: small , crosover 80 Center: crosover Surround: crosover i dont need to get sound under HZ from the surrendered speakers.
Bass: hz. Crosover i can only set on my subwoofer, whatever i set in denon settings it doesnt change. There is also sub in on the subwoofer. Which one is better? Not the nice thump you would expect. For movies however they are definitely loud and full. I did your gain hack and it made a big difference.
They are crossed over at 80hz with lfe only. I know they play loud, as movies show that, but when playing music not at all. Do you normally have to increase the sub output for music vs movies? Thanks for your time. Nice informative write up, makes a lot of sense. However this gets confusing of like me you own a REL subwoofer. The REL subs are designed to use double Bass and thrive on it. Do you stand by your write up even for us REL owners? The difference in sound between stereo and direct settings, reflects the transparency of the DAC you have eliminated from the signal chain.
I stand by this write up, regardless of sub maker. If you want to set your speakers as small, you might need to increase the gain on the REL to compensate, depending on the bass output of your main speakers.
Using a typical AVR without external amplification, speakers set to large draw more of the available power, reducing available headroom for the rest of the speakers and the system as a whole, and makes the AVR run warmer typically, because it is working harder. In those cases, it makes more sense to shift the bass load to the subwoofer amp by setting the speakers to small and running a higher crossover, giving the AVR more headroom and less strain. I typically keep it in Dolby Digital for this reason.
You can try adjusting the 2 channel mode in speaker setup, but I still prefer Dolby Digital. Another thing that might be worth trying is Restorer on the Low setting.
Just a touch more low end. I always set the crossover on the subwoofer itself to the highest value, essentially disabling it. Just for kicks, try 90 on your fronts and center, and see if you notice any difference. That makes sense. Direct usually eliminates the subwoofers from the mix too, unless there is LFE channel content.
Additionally, you might find that the overall audio effects stemming from the use of RCA input are not as up to par, though this is not generally the case. So now that we have gone over a few acronyms and their respective functions, you will hopefully have a better understanding as to the distinguished purpose of LFE and RCA input cables. However, this might still leave you wondering which cable you need to connect a subwoofer to its receiver.
To connect a subwoofer to its receiver, you can use an LFE input cable or an RCA line-in cable used for left and right input options. Assuming your subwoofer has the option to use an LFE input, this will be your best choice. But, if not, then an RCA input option will work. Be sure to review the manual for your subwoofer for more information. If you are unsure of which cable you need or if your subwoofer even came with cables, then you should look at the input and output options first.
If not, then you will use an RCA input cable to connect to the left and right inputs. You may find that if your subwoofer does not have an LFE input option, it might be worthy of investing in a secondary subwoofer to use a dual connection. Using an equalizer in this situation will help your subwoofers to balance the transmitted signals and yield the desired effect of producing the transmitted audio effectively. When you begin venturing into the world of dual subwoofers , you might feel like you are in over your head.
However, this is why you can hire or seek advice from a professional. Most of the time, audio experts will recommend using dual subwoofers to advance the distributive localization of the audio, giving more of a surround sound feel, but this might not always be practical for your cause. Read my article on dual subwoofers.
Many audio experts recommend using two subwoofers, but do you really need this setup for your basic audio needs within your home?
Your receiver may have 2 LFE outputs but this is used for a 2-subwoofer set up with each connection going to a single sub. This setting is mainly used for systems with full-range left and right tower speakers with woofers capable of playing the lower frequencies.
Double-bass does not mean that you have dual-subs. Save my name, email, and website in this browser for the next time I comment. But for a better understanding, let us look at each of these options in more detail.
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