Why do you wanna know? Anyway, I don’t think you’re my type. Sorry.
Seriously - my better half really likes the room too.
Well, I used to think that way before I listened to a fully direct coupled signal chain fed by a high res digital source. I'll take the risk of having infrasonik junk on my recordings do possible mechanical damage to an LF driver. I would never run a HP ever again or anything with a noticeable phase shift above 15hz - even my vinyl playback fulfills this requirement.
The thing is even direct coupled gear will have a DC servo on it acting as sort of a HP. My amps behave like this above roughly 3 - 5hz, but the thing is it can and will add up the more components introduced into the signal path. So its not just the amp, but also the source and every stage of gain in the signal path, which will add up to a more substantial amount by the time everything comes out of the speakers.
Touchê.. ouch, that hurt!Why do you wanna know? Anyway, I don’t think you’re my type. Sorry.
Seriously - my better half really likes the room too.
Very, very good!
How it measures in other positions?
How it looks w\o LPF?
Is front BA EQed\corrected or not?
Awesome looking room!
Respect for that DBA!
love ur foam diffusion “cloud”. Waf clearly isnt a concern 😂
quick question, do the drapes make the room slightly overly dead?
finally, do you have a pics of the eq curves at play?
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Hey Stig, with a frequency plot like that you certainly have bragging rights.! No one else posted the frequency plots of their bass, so a lot of opinions and claims without anything to back up their opinions or claims.
I suspect that a double bass array provides for the best possible bass (flattest frequency response) - probably better than multiple subwoofers strategically spread around the room. However, there is an additional challenge of matching the timing of the bass with the main speakers so that you don't end up with muddy sound at the crossover point. Since the bass drivers are behind the main speakers, how do you time align the bass with the Magnepans?
https://www.diyaudio.com/community/threads/my-double-bass-array-with-low-q-subs.392998/#post-7194117
no less interesting are such graphs:
and clarity\definition, here is D50:
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Yeah, the room is quite dead with all that diffusion. RT60 around 0.15 s. The drapes don't have all that much effect really, but they do increase the WAF!
I use a MiniDSP Flex on the DBA as you can see.
Overall setup
Input EQ
Rear array EQ
No EQ on the front array.
Interesting that you didn't work the 21's into a DBA and went with 10's. Was it an enclosure size difference or something else?
That's true. There's also a number of other reasons why a large number of small subwoofers is a better solution than a few large ones.
- It will increase the upper bandwidth of a DBA because the distance between each subwoofer is shorter.
- Easier to move them around. I'm sick and tired of big and heavy speakers....
- Easier to build. Small subwoofer boxes can be made from regular plywood without bracing, and still be more than good enough.
- Small boxes have their internal standing wave modes far above the lowpass XO point.
- Large boxes will become reflectors, while small ones are less visible acoustically. If you look at the pictures of my DBA, you see that the entire back wall is covered by a skyline diffusor. With large subwoofers, most of the diffusion will be hidden behind them.
Take a look over here:
https://www.diyaudio.com/community/...dipole-with-beyma-tpl-150.142015/post-2922246
Why not use the 21"? See my previous post.
At a point in time I actually had both the 16x 21" H-baffles and 18x 10" in the same room. One end was dedicated to 2-channel hifi, and the other to home cinema. Then I decided to combine the two, and sold the H-baffles.
Hey StigErik,
That is a serious evolution since the BG RD75 arrays ?!
How do you prefer Magnepan 1.7 i over the BG RD75 array you crossed around 250 hz if my memory serves me well ? The 3.7 are in the corner areas, why did you prefer them at this area over the front littlier 1.7 ?
But the WAF needed curtains, I also like the fact those curtains are surely a big plus for dipole speakers as the Magys...
Kudos for the listening room
(what is DBA meanning please)
So what is the in room power that you loved best for you taste please ? Flat, genttle digging from the bass to the treble, -5 to -10 dB ?
I hate to admit that, but for most of us that has not the talent of filter passove designing to follow a target curve, such clever active DSP system seems the ways to do ! Too bad as I think (but maybe I am wrong) than the quality of the digital to analog system matters in the final quality of a sota playback (DCS, Total DAC, RME, etc)... but maybe I am wrong !
That's impressive evolutions you did StigErik into our hobby... that's crazy cool !
That is a serious evolution since the BG RD75 arrays ?!
How do you prefer Magnepan 1.7 i over the BG RD75 array you crossed around 250 hz if my memory serves me well ? The 3.7 are in the corner areas, why did you prefer them at this area over the front littlier 1.7 ?
But the WAF needed curtains, I also like the fact those curtains are surely a big plus for dipole speakers as the Magys...
Kudos for the listening room
(what is DBA meanning please)
So what is the in room power that you loved best for you taste please ? Flat, genttle digging from the bass to the treble, -5 to -10 dB ?
I hate to admit that, but for most of us that has not the talent of filter passove designing to follow a target curve, such clever active DSP system seems the ways to do ! Too bad as I think (but maybe I am wrong) than the quality of the digital to analog system matters in the final quality of a sota playback (DCS, Total DAC, RME, etc)... but maybe I am wrong !
That's impressive evolutions you did StigErik into our hobby... that's crazy cool !
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Not sure what you mean regarding 1.7, as I’ve never owned a pair. I’ve heard them a couple of times, and thought they sounded rather dull to be honest. Well, every Magnepan I’ve heard sounded far from good really. Most people simply don’t have good enough rooms to put them in, or don’t have a clue of how to set them up. I’ve seen them all to often positioned 1 meter or less from the front wall, with no toe-in, and listening position 7 meters away…..
Dipoles are tricky because of all that rear radiation. The x.7 generation Magnepan also behaves less than good off-axis because of those very odd crossovers. Well, with an active crossover and DSP it’s a totally different speaker, and I love how they sound. Never heard anything like it.
It may look like my 3.7’s are in the corners, but they’re actually not. They are close to the side walls, which is covered with absorption. Behind them there is 2 meters free space. The tweeters are on the outside. I found this position gave the least amount of early reflections. In my opinion, the only way to find the best speaker and listening positions, is through measurements.
DBA = Double Bass Array.
https://en.wikipedia.org/wiki/Double_bass_array
My target room curve slopes down 3 dB @ 10 kHz from approximately 2 kHz. Then there is +10 dB from 150 to 20 Hz.
In my opinion, modern AD/DA sounds completely transparent. I go from digital to analog in my Marantz receiver, and then analog-digital-analog again in the Hypex FusionAmps on the maggies, and the same with MiniDSP on the double bass array. There are more important things to worry about I think. In my opinion, speakers and room acoustics is 90% of the sound quality. That’s where I put my effort.
Dipoles are tricky because of all that rear radiation. The x.7 generation Magnepan also behaves less than good off-axis because of those very odd crossovers. Well, with an active crossover and DSP it’s a totally different speaker, and I love how they sound. Never heard anything like it.
It may look like my 3.7’s are in the corners, but they’re actually not. They are close to the side walls, which is covered with absorption. Behind them there is 2 meters free space. The tweeters are on the outside. I found this position gave the least amount of early reflections. In my opinion, the only way to find the best speaker and listening positions, is through measurements.
DBA = Double Bass Array.
https://en.wikipedia.org/wiki/Double_bass_array
My target room curve slopes down 3 dB @ 10 kHz from approximately 2 kHz. Then there is +10 dB from 150 to 20 Hz.
In my opinion, modern AD/DA sounds completely transparent. I go from digital to analog in my Marantz receiver, and then analog-digital-analog again in the Hypex FusionAmps on the maggies, and the same with MiniDSP on the double bass array. There are more important things to worry about I think. In my opinion, speakers and room acoustics is 90% of the sound quality. That’s where I put my effort.
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