Home Studio Acoustics: The 38% rule (and why to IGNORE it)

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Acoustics Insider

Acoustics Insider

Күн бұрын

Пікірлер: 41
@christianutter5383
@christianutter5383 Жыл бұрын
38% rule - I always skip the first 38% of youtube vids because that's where the real content starts.
@SHARt_murmur
@SHARt_murmur Жыл бұрын
Haha well said!
@blammo5823
@blammo5823 Жыл бұрын
Wadsworth's Constant
@christianutter5383
@christianutter5383 Жыл бұрын
@@blammo5823 Wadsworth's is only 30% =)
@brycesalvatore8581
@brycesalvatore8581 9 ай бұрын
It really is a bit annoying how long these videos are. There is good information, but goodness let's get it out a little quicker. When I do finish a video, I'm always asking myself what took so long to get to the point and feel a bit confused. I appreciate the channel. Just my input.
@dbrodbro1
@dbrodbro1 Жыл бұрын
38% Rule implemented / moved listening arrangement 8" toward front wall / Bingo. Tears came to my eyes. Thank You Sir.
@dougleydorite
@dougleydorite Жыл бұрын
I ignore all these rules and also follow them. Measurements followed by listening tests have lead me down the right path over time
@veenhond
@veenhond Жыл бұрын
nice one. after going down the rabbithole of fixing bass problems i decided to just put my table back where the room sounds best. so i inadvertently used some of your bass hunter technique, and i can recommend it!
@georgelewis3047
@georgelewis3047 4 ай бұрын
When I find a YT video that does not start with "hey what's up?" I will be able to die in peace.
@lakambramusic
@lakambramusic Жыл бұрын
Find a song with a good amount of sub bass. Bring it to your daw, find the tempo, loop 2 bars where the bass is good, move around the room….
@Big_Old_Bondy
@Big_Old_Bondy Жыл бұрын
Very interesting how the axial mode is skewed across it's length, due to the delta between the front and back wall boundry density. Great video 👍
@Big_Old_Bondy
@Big_Old_Bondy 10 ай бұрын
@@chinmeysway Yeah maybe one of those things you don't really notice. My current setup has a door in the front right corner and the left is solid wall/plaster. Still sounds fine and imaging is good. I listen at very low volumes anyway so I don't excite the room too much.
@sawcp
@sawcp Жыл бұрын
I always put the speakers at the mid point of the length of the room and both speakers touching the side walls. Based on measurements, this seems to excite less modes. And based on listening test, this placements always has wide soundstage with good clarity.
@paulk9534
@paulk9534 10 ай бұрын
Really? You must have a really long room if you can sit so far back
@sawcp
@sawcp 10 ай бұрын
@@paulk9534 just normal square-ish room, 3.6 * 3.2, I sit 0.6 m from the wall. Pretty nearfield but sounds good to me.
@BluEight_R8
@BluEight_R8 4 ай бұрын
Bravissimo, grazie di queste preziose informazioni.
@RogerBadgerDSFlyer
@RogerBadgerDSFlyer Жыл бұрын
Would a listening test like this work better by playing some sustained synth notes, like a basic sine wave, at various low end frequencies, say E0 (20.6Hz) through E2 (82.4Hz)? Might be easier to detect changes as you move around when there is a constant level, same frequency, sound emitting.
@Jrel
@Jrel Жыл бұрын
On the first diagram, you actually pointed to 7.5 feet of the length of the room, which is 31%. 38% is at 9.12 feet (9 feet 1.44 inches). I'm guessing the 7.5 feet is better? The 38% mark or a little past 9 feet is close to the 4th standing wave (yellow) null. Unless the 4th axial mode doesn't matter much? If that's the case, then the 38% position is fine? (in the 2nd diagram, the person is sitting very close to the 38% position). There's only 3 axial modes showing in the 2nd diagram. Added: Oh I see using the Bass-Hunter technique, that is probably just the best way to find the listening spot.
@paulward1586
@paulward1586 Жыл бұрын
As usual, great content.
@mastablasta9x
@mastablasta9x Жыл бұрын
Hi Jesco, could you reveal if you plan to do some black friday deal on BBBT course? ;)
@roninthegoat2810
@roninthegoat2810 10 ай бұрын
Does my room sweet spot change when I change speakers? Like if I do the bass hunter method with the monitors I got now and then switch to a different one do I need to do it all over again?
@ThrillaPark
@ThrillaPark Жыл бұрын
Thank you
@nitinvaid89
@nitinvaid89 Жыл бұрын
i have 11x 20 Ft room and have ringing bass issue at 30-40hz over 1 second and i have hard time fixing this which trap i can make myself? been watching all your videos but not able to get exactly what i want
@PatMcGuireMusic
@PatMcGuireMusic Жыл бұрын
The first speaker in the corner, should this be on the floor or a stand at ear level? Thanks.
@theavlab
@theavlab Жыл бұрын
Floor
@PatMcGuireMusic
@PatMcGuireMusic Жыл бұрын
@@theavlab Thank you so much.
@iandeegrees1509
@iandeegrees1509 11 ай бұрын
Do you assume that the speakers are positioned at the wall or slightly off (roughly 30cm 40 cm)
@has_hash
@has_hash Жыл бұрын
Starting point 38% from the front outer perimeter wall... Before any acoustic treatment. This is something many miss.
@BrentLeVasseur
@BrentLeVasseur Жыл бұрын
What’s your take on active bass traps like the PSI Avaaa or using a quad subwoofer array, where you have 2 stereo subs on the front wall playing in phase and two on the back wall playing 180 degrees out of phase to cancel out room modes and eliminate humps and null spots?
@Cautionary-Tales-Band
@Cautionary-Tales-Band 8 ай бұрын
It's a thing. Pairs of subs in the correct place essentially interact with the room modes with inverse polarity, so can cancel out certain room modes.@@chinmeysway
@venkydc6874
@venkydc6874 Жыл бұрын
Hi....my bass sweet spot is above the speakers 2-3 feet in front of the sitting spot (equilateral triangle). How to address this ... please help
@KaneDWilliams
@KaneDWilliams Жыл бұрын
To use his bass hunter technique. You must find the sweet spot with the room empty and that becomes your listening position. You then place your speakers in respect of that seating position.
@mandolin-george-uk
@mandolin-george-uk 4 ай бұрын
so why not 38 % from the side wall as wel l- ? on the same logic - looking at your diagaram the mid point looks problematic
@sigurtsigurt549
@sigurtsigurt549 Жыл бұрын
Finding the best position by ear is nonsense as you do not have a proper reference just the sound you used to listen which could be completely off, so take several measurements is muuuch better way how to do that..
@zerobject
@zerobject Жыл бұрын
Maybe it's best to combine measurements with listening impressions then. At least this is what Jesco showed us in his earlier videos.
@KaneDWilliams
@KaneDWilliams Жыл бұрын
He is saying to take multiple listening tests, with various pieces of music. If measurements was easier, he’d say to do that as he also takes measurements whilst adding treatments. Remember, this is only about listening for a balanced low end, not the entire frequency range.
@sigurtsigurt549
@sigurtsigurt549 Жыл бұрын
@@KaneDWilliams listenig and judge if low is balance when you never hears it before in proper room doet no make sense..no matter how good you know the track..
@KaneDWilliams
@KaneDWilliams Жыл бұрын
@@sigurtsigurt549 ok, well you may as well stop listening to Jesco’s advice as this is the basis for his whole approach.
@sigurtsigurt549
@sigurtsigurt549 Жыл бұрын
@@KaneDWilliams there still space for impruvment
@andynonimuss6298
@andynonimuss6298 10 ай бұрын
The 33 and 38 percent rules are not universal to all rooms. In a room that is 30 feet long, at 38% the Listening Position would be 11 and a half feet from the front wall and your studio monitors would be 7 and a half feet from the front wall. It would be ridiculous to have your studio monitors and your Listening Position that far away from the front wall! No studio would ever do that. In contrast, if you had a room that was only 7 feet long, at 38% your desk and studio monitors would be crashing into the front wall! In a room that's only 7 feet long, your only option is a Listening position at 45.8%. If you map all of these things in a CAD program you can clearly see that 33 and 38 percent ONLY work for rooms within a specific length range. And to be technical... the midpoint distance between nulls is not 33% it's actually 32.8% and 38% is actually 39.6%. Most smaller room lengths will have a Listening Position at 45.8%.
@磁鬼頻率
@磁鬼頻率 2 ай бұрын
You keep saying a full cycle is half a cycle!!! Etc...
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