Recently Browsing 0 members
No registered users viewing this page.
I have available for loan my Behringer ECM8000 measuring mic, a mic stand and a Tascam US144 phantom power/mixer unit. USB cable and mic cable are also supplied. This could be of interest to anyone who wants to investigate REW and perhaps EQ their system or who wants to integrate a subwoofer or two.
No time limit on how long you have the gear in your posession but I do ask that if more than one SNA'er is keen that it is passed on the next person in a reasonable time frame.
I can perhaps deliver to Melbourne over the next few days if anyone is interested. Postage will be awkward because of the mic stand.
Anyway, if anyone's interested let me know.
As the title asks, who here uses this?
I thought my room sounded good before, but after further experimentations, wow.
It is said that EQ is really the last resort. You should be aiming to fix room issues with treatments first, then applying EQ. Yet very few people actually treat their room and most rely on the auto EQ provided in their systems (Audyssey etc). The last time I did this, I was trying to workout the peaks from the bouncing dots and this time, I have applied smoothing to make the peaks easier to see. EQing is about pulling put the peaks to make the response flatter, not making the systems louder. I only have 7 bands of EQ per channel, so have played around with the RTA, a very cool tool that is a part of REW, to make these adjustments. This just might be the flattest I have ever had my system. ignore the audio picked up by the phone mic. The video starts at left screen, cycles through each channel, and ends back at left screen. The system is stimulated by tones from the AVR. Once I set the level, I worked through each channels in turn, then did a final level calibration to ensure I was playing back at +75dB/C/Slow.
I just picked up a virtually unused REL Quake sub for $175 and thought I would give it a go with my LS50's.
The aim was to enhance the bass without interfering with the natural attributes of the LS50's.
I have found that using REW setup to measure in room humps and bumps and doing a sweep with the sub OFF then another sweep with the sub ON works well. After a bit of tweaking the sub level, moving the LS50's and sub around everything suddenly came together. A crossover of around 35hZ seems to stop any muddiness or bloat around 80hZ in my room.
I would assume the REL T-5'S would be better but the Quake has really given my LS50's some real weight without destroying the magic. I have tried a REL T-Zero. It improved bass but didn't have quite enough bottom end weight for me.
Green trace is LS50's with sub OFF and orange with sub ON.
My listening space is relatively small and it isn't practical to move furniture around and it is an awkward space with one corner on the left which is partly enclosed by the side of a cabinet. The right side of the room opens into a void with a high ceiling so I get no reflection from that side. The left side has sliding glass doors and curtains so it sounds different with the curtains closed.
I have found that my KEF LS50's respond dramatically to positioning and my REL T-Zero sub crossover frequency and level are very difficult to optimise because the LS50's are so responsive that introduction of extra bass can have a dampening effect on their sound.
I was unable to get the balance right after messing around for months trying to balance my sub and position the LS50's optimally.
I knew there were an enormous amount of REW users but I didn't think it applied to me because I couldn't make physical change to my room. WRONG!
I installed REW on my Mac and used the inbuilt mike but the readings weren't very informative. I didn't want to spend hundreds of dollars on a calibrated mike but as luck would have it, Loud Speaker Kits had Dayton Audio iMM-6 mikes for around $25 so I splurged.
After a some experimenting and variable results I got the hang of it. I took readings without the sub and was able to optimise the LS50's bass response by positioning alone. I couldn't get rid of a dip around 400 hZ but I don't notice any deficiencies.
This gave my my benchmark for the main speakers.
Optimising the sub suddenly became simple because I was able to adjust the crossover frequency to eliminate peaks then adjust the level to give a nice smooth balance between the LS50's and Sub which now pressurises my room nicely despite the unconventional shape of my room.
Now I have an amazing sounding system with gutsy, clean musical bass that has become an extension of the LS50's plus I don't have to get up all the time to fiddle with my sub any more.
Everybody NEEDS to make REW part of their system even if they can't modify their listening space.