πάντως, αν είναι να γίνουν τα ταπεινά monitoraudio κάτι σαν τα Grimm Audio LS1........ Is Audyssey all you need in your system for equalization?
Maybe and maybe not. I have read some comments in the past, even a couple of reviews on some other Audyssey equipped receivers and processors, where users or reviewers have complained that after they ran Audyssey setup, the sub-bass levels were set too low. This will be the case if you have an extreme peak in your raw low frequency response. Before Audyssey equalizes the response, it sets the levels based on pink noise, and those levels are going to be influenced by peaks that may already exist in your response. If you have a 10-15db peak in your low frequency response, Audyssey reads it in the pink noise level setting and reduces the overall subwoofer level. Then it equalizes the peak, removing it and leaving your sub levels low. Audyssey also does not make the best use of its filtering when you have a large peak in your response, as we will see in the comparison graphs below. This is a good reason to invest in an inexpensive measurement microphone and download Room EQ Wizard for free, so that you can measure the response in your room to determine if you may have any major response peaks that can be fixed before running Audyssey setup. Peaks can be dealt with in a few different ways. If you have the freedom to do so, you can move your sub enclosures around and see if that helps, although you may sacrifice in some other areas. It is also much easier to deal with peaks than it is nulls. Acoustical treatments (bass traps) are an option, although it can be difficult to find any that will deal with large peaks below 80Hz, such as the 50Hz peak you see in graph #1 below. GIK Acoustics has recently added Scopus Tuned Membrane Bass Traps to their arsenal, which could very well be a viable option for situations like this. In many cases the easiest solution is to use a parametric EQ. Quite a few of your manufactured subs, plate amps and even some pro amps will include one or more bands of PEQ, which is perfect for fixing problems like you will see below. Otherwise you will need to look at other options such as the Behringer 1124p or something similar. Another inexpensive solution is the miniDSP, which will give you more features and options than the Behringer units. The idea is to cure those peaks prior to running Audyssey so that Audyssey is not using all of its resources trying to fix issues that it is not that good at fixing. Below are graphs showing examples of how fixing the issue prior to running Audyssey will improve the response. In graph #1 we have a very large peak at 50Hz and another not so large peak at 100Hz. Graph #2 shows the results after running Audyssey prior to dealing with the peaks. Notice how the low frequency response drops off tremendously below 50Hz. Sure, you can increase the subwoofer levels (+6dB in graph #3), and you will end up with even more boomy bass around 50-60Hz... and you are not fixing the real issue. This is simply not a good result and would be most undesirable for me. If we add a couple of filters in a parametric EQ (BFD 1124p in this case) to cure those peaks (see graph #4), we end up with a response that Audyssey can work with a lot better. After running Audyssey again we can see the very different response we get in graph #5... a much improved response.
I do not know exactly how Denon, or other receiver manufacturers could accomplish it, but it would be nice to have a few bands of parametric equalization to use prior to running Audyssey. I suppose that could also be an option that Audyssey could implement in their next version of Audyssey (XT64?)......
ο τύπος χρησιμοποιεί το minidsp ως Equalizer για να κάνει Room Correction. Δεν το χρησιμοποιεί ως ενεργό cross.
δυστυχως εγω την πατησα.τους εστειλα μηνυμα πριν και τους ρωτησα αν στελνουν με ems γατι παη τελωνειο και μου ειπαν ναι.
