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Mr. Grinmani you are the best. I wish I could afford to hire you to do my home theater from scratch. Maybe one day. Keep up the good work and keep sharing your knowledge and methods with the rest of home theater enthusiasts like me.
I guess Grimani Systems doesn't charge enough; they have to pinch pennies by using a horrible and off-putting AI-generated spokes-monster with what sounds like AI-generated copy to read, as well. Must be tough times out there.
This gave me confirmation I was doing the right thing when calibrating my system. I'm now going back to play around with some delays. Thanks Mr. Grimani, I literally watched all your past videos with Audioholics.
@grimanisystems - Informative videos, thank you very much for making them. Just FYI, the playlist for these ("Calibration") is in the wrong order. It's part 4, 3, 2, 1 (thus far). :)
Amazing Initiative !!! had the opportunity to learn from Antony Grimani in Cedia Sessions. Best guy ever What is the Microphone Multiplexer being used?
Thanks for the video. Can you make a video where the center channel is clearly seen without and with equalization? Can you make a video where you can see parameters such as impulse, waterfall, RT, etc.? Written with translator Greetings
The camera handling noise was terrible! If it’s a cell phone, please get some sort of filming rig to avoid that noise and put a mic on who ever is speaking in your videos! Or just use the mic on those speaking, so we don’t have to hear the camera handling noise!
Very much agreed. We didn't actually expect to turn this into a video series, or I would have worn a wireless lavaliere mic, and would have used a tripod, or phone holder; maybe next time!!
@@tonygrimani I'd take all of the technical show and tell videos I can get even if you recorded them with a potato. Don't avoid uploading this invaluable information because someone complained about the sound, between video and bad sound and just no video - video every time.
On this video I am using a 4-channel DSP-equipped power amplifier. I usually set them up as 1: Front Left, 2: Front Right, 3: Back Left, 4: Back Right, but the order doesn’t really matter.
Just wondering, how about the idea of delaying first the front 2 subs and summing them as one virtual sub and then adding the rear subs one by one by individually delaying to form a final bigger virtual sub . Will that yield the same result as delaying in pairs ( as shown in the video ) or have a different summation.
Hiya, nice to see the master at work. I have a question. Doesn’t the Time alignment tool in REW software achieve this? I’m very new to this area of dsp etc and learning all the time. Am I barking up the wrong tree? Cheers
Anthony, I know you are aware of MSO. Why don't you utilize it for this? It has come a long way in the new version with it's "spl maximization". If you read its documention, everything is explained, so you will know what it is doing behind the scenes.
He mentions it at 7:10. MSO can give some messed up results like delaying one sub by 20-30ms or reducing one sub’s gain by 20db, but it’s good when it works
He said it takes too long also, he isn't just there to calibrate subs. His entire process can take longer than 8 hours. He has to manage his workflow in his best interest.
Quick question to BigBenni and anyone else with MSO experience: I own 2x old SVS SV1000 subs and want to add another 2x higher priced / better sealed subs to my room. Can I still get very good results using different pairs (2x SV1000 in Rear Corners & 2x Let’s say Martin Logan New Abyss 10 Sealed Subs in Front Corners) utilising REW + MSO? Or is it strongly recommended that all 4x subwoofers be identically matching? Thanks guys!!!
Another great video ! It looks fascinating doing sub time and phase alignment in real time. I'm putting together a mic array system to see what my system is doing in real time and be able to time align my subs + mains in real time. Thank you for sharing your methods.
Flat down to as low as the subwoofers will reasonably go; cutting off somewhere around 30 to 25Hz. Then set the overall in-band level so that it is about 5 to 6dB above the mid-frequency level of the speakers; that yields a natural-sounding bass.
@@grimanisystems thanks for the info. Do you roll-off those big 21” subwoofers too at about 25 -30 hz? How do you set those up to play with the smaller subwoofers?
I first saw you on a Siskel & Ebert Holiday Gift Guide television special back in the early 1990’s. The home theater you were correcting had the inwall LCR’s in the ceiling pointing straight down.😅 It really inspired my 30+ year passion for home theater. So great to see your passion is still alive and well. I love your videos!!!
How did you achieve bass boost for the center channel, if it is built into a baffle wall? I have experienced with in wall subwoofers that they lack the punch compared to the ones that are positioned next to the wall. I have heard that when you build a subwoofer into the wall, it won't be a 360 degree emitter anymore, but 180 and so you lose some room gain. Looking at the response of this center, this is clearly not the case :). May you please advise?
The three font speakers are on the wall, not actually in a baffle. They are the Grimani Systems Rixos-M, which were developed for On-Wall or In-Wall placement. There is a DSP profile for each application. The bass boost here is a combination of natural room response, and 2pi baffle reinforcement effect. Realize that in the bass region you never really have a 360 degree radiation, since the boundaries are all very close to the drive units, considering the long wavelengths.
I usually point the mics towards the front speakers, at about 45 degrees. These mics are omnidirecitonal over the major part of the spectrum we are interested in, so doesn't matter too much. The top octave is where it makes some sense to point towards the speaker region to be calibrated.
Very good explanation Expecting a detailed REW measurement tutorial from your side You tube have alot of REW tutorial but none of them is complete we are expecting something from scratch and how to correct the issues on the measurement
The mic directions were probably not set when we were running the camera. I usually point the mics towards the front speakers, at about 45 degrees. These mics are omnidirecitonal over the major part of the spectrum we are interested in, so doesn't matter too much
