Wow! Genelec GRADE looks amazingly useful

[srrxr71]

When the single 7360 was clipping what was SPL @ listening position and how close are your monitors to listening position? Apologies if you stated this already upthread. Thanks.

The Genelec mic was showing 103ish dB. That is dBc. Your perceived volume is dBa which is actually quite a bit lower. Probably 94dBa.

Also I got my second 7360. I can still make them both clip. Easily.

I am switching to 8361a for my mains. I will set the crossover lower to perhaps 60Hz. Maybe they will handle it maybe not.

I might just order one 7380 and keep it close to me. Between the 3 subs finally I should be able to listen at the levels I like without clipping.

 

[Ecksbocks]

Does anyone know what the quality factor is?

It mentions a quality factor when disclosing notches and peaks.

Also what exactly is the early be late reflections and what can I do to improve that number?

Hi, my guess is that it's the Q-value, how narrow or wide the peak/notch is. Late reflections is more than 20 ms. Absorption will improve that.

I'm addicted to Grade Report, I'm totally new to actually measure, it has always been done by ear which can be very frustrating.

Here is my room

https://drive.google.com/file/d/1CaRO8x27h0SAct8kYlGW78CIOerdXWri/view

 

[RobL]

Sorry, dumb noob question. I saw the Grade report checkbox when I did my initial calibration but it wasn’t available to check as I wasn’t logged in to the cloud. I think it was the page where you input your room dimensions. Anyway, I have an account now and would like to try to generate a report but I’m not sure how to get back to that page…when I take a new measurement it skips that step. What am I doing wrong?

 

[Ecksbocks]

Sorry, dumb noob question. I saw the Grade report checkbox when I did my initial calibration but it wasn’t available to check as I wasn’t logged in to the cloud. I think it was the page where you input your room dimensions. Anyway, I have an account now and would like to try to generate a report but I’m not sure how to get back to that page…when I take a new measurement it skips that step. What am I doing wrong?

Hi, sounds strange, that page should show up as soon as you hit Calibrate. And it doesn't?

Is Cloud AutoCal 2 choosen, rather than Local AutoCal on the "Autocal Page"?

 

[RobL]

Hi, sounds strange, that page should show up as soon as you hit Calibrate. And it doesn't?

Is Cloud AutoCal 2 choosen, rather than Local AutoCal on the "Autocal Page"?

Yes it skips that step on me when I hit calibrate…I’ll check if cloud autocal is selected. Thanks!

 

[srrxr71]

Yes it skips that step on me when I hit calibrate…I’ll check if cloud autocal is selected. Thanks!

Very weird. It should pop up. Maybe reinstall the software?

 

[RobL]

Genelec GRADE to continue to be free until September then registered users will get 12 more free report until they need to subscribe.

Apparently Genelec is releasing an “exciting” update in September, I’m interested to see what they’ve come up with!

 

[srrxr71]

Woke up and saw that email. Oh well I guess at some point we won’t have anything to spend on in our systems. Might as well pay Genelec.

 

[holdingpants01]

I did a fun experiment as had a chance to create GRADE report with 8330 in a big, I mean BIG room.

I don't know exact dimensions of walls and height, but it's 387m2 and 3320m3. The decay is quite short for the size of the room and hovers around 800ms. I attach a few graphs from the report. Early reflections aren't a problem there because of the size, room decay is high but smooth and works great for listening. Low end was particularly great, however I missed the 20-40Hz range as we recorded contrabass clarinet and there's a lot of energy down there in it. The 8330 are not as good as my usual 8351, but in this room they sound closer than ever

 

[srrxr71]

So I was looking at my report and I realized RT60 and ITU are totally different standards.

I do okay on RT60 but fail ITU badly.

Could anyone please explain what all this means and what I can do to make it better? I have plenty of panels I need to place still.

Also on the ITU compliance how do I find that “problem reflection/peak”?

Btw my dimensions in feet are: 35x16x10

 

[srrxr71]

I did a fun experiment as had a chance to create GRADE report with 8330 in a big, I mean BIG room.

View attachment 298529

I don't know exact dimensions of walls and height, but it's 387m2 and 3320m3. The decay is quite short for the size of the room and hovers around 800ms. I attach a few graphs from the report. Early reflections aren't a problem there because of the size, room decay is high but smooth and works great for listening. Low end was particularly great, however I missed the 20-40Hz range as we recorded contrabass clarinet and there's a lot of energy down there in it. The 8330 are not as good as my usual 8351, but in this room they sound closer than ever

That room looks acoustically designed for amplified voice/music events and some professional input was involved for sure.

 

[holdingpants01]

That room looks acoustically designed for amplified voice/music events and some professional input was involved for sure.

yes it was, it's a rather old radio studio, now used mostly for orchestra rehearsals, but I rent it sometimes to record piano or jazz bands

 

[ernestcarl]

Could anyone please explain what all this means and what I can do to make it better? I have plenty of panels I need to place still.

Check your (filtered) ETC and/or wavelet spectrograms. Could be some uneven and strong reflection(s) between 1-5 kHz is my guess.

 

[srrxr71]

Check your (filtered) ETC and/or wavelet spectrograms. Could be some uneven and strong reflection(s) between 1-5 kHz is my guess.

Thank you.

So I installed heavy felt lined curtains over all my windows and it really changed things.

 

[RobL]

Thank you.

So I installed heavy felt lined curtains over all my windows and it really changed things.

Looks very good now…Is there a lot of difference to your ears? My reverberation time doesn’t meet ITU either

 

[srrxr71]

Looks very good now…Is there a lot of difference to your ears? My reverberation time doesn’t meet ITU either

I mean it’s hard to say because placebo is a thing.

However one way I sort of test it is to play music and then pause. How quickly does it stop?

It definitely stops on a dime now.

All I had to do was to cover the windows with a felt lined curtain I found on Amazon. So it’s not like I needed expensive and bulky GIK traps.

The frequencies affected were mostly mids and highs.

So if it’s a man cave then get those curtains and just hang them on the walls.

If WAF is a factor you can do nice fabric panels of your spouse’s choice. I’ve seen them do it in nice interior decorating books. Fabric clad panels is a nice look when done properly.

This is an example of what I used: RYB HOME 3-in-1 Soundproof - Blackout - Energy Saving Curtains for Bedroom, Soundproof Blanket Curtains for Living Room Kids Nursery Patio Door Divider, Stone Blue, W 62 x L 95, 2 Panels https://a.co/d/a3VhoYt


So I bought those and relevant sized curtain rods and had a trusted person from Taskrabbit put them up.

Also next week I will have him place ceiling panels about 5 244 traps.

I will post my results after that.

Also keep in mind my listening position is quite close to the speakers.

 

[Esprit]

Interim announcement re: GRADE Report pricing

Get detailed room analysis,...

genelec.activehosted.com

 

[soundspy]

I'm looking forward to testing it with my soon-to-be-here Genelec system. Does anyone know the best approach in the room measurement section if the room is asymmetrical?

 

[Pe8er]

I'm looking forward to testing it with my soon-to-be-here Genelec system. Does anyone know the best approach in the room measurement section if the room is asymmetrical?

When setting up calibration, choose the "Individual EQ" option:

 

[HiMu]

I did a fun experiment as had a chance to create GRADE report with 8330 in a big, I mean BIG room.

Thanks for sharing that!
I'm quite surprised comparing those to my DIY treated 30.7m3 non-cuboid room. T60 is off on the high frequencies because this is non-cuboid room so the calculation is for a room 6m3 larger. And yes, it is very short, empty room has about 0.18s average but it's a flutter echo festival.