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In Reply to: RE: Maggie 3.6 and Pioneer SW8 MK2 Subwoofers posted by JLindborg on December 11, 2014 at 10:37:45
Hey - I don't as that was done 5 or 6 years ago. Didn't feel the need or even think of keeping it. And yes I remember below 34Hz there was nothing to hear - but we both heard output at 34Hz. This frequency test was done after I had new crossovers built by Parts ConneXion and the 3.6R's were on Mye Stands...so they aren't 'stock' 3.6R's. J-L thanks for sharing your knowledge :)
Edits: 12/12/14Follow Ups:
Ok, I understand.
From the point I am coming from is that I have done some serious measurements of the MG3.6.
And as I mentioned the lowest tuned frequency of that speaker is around 43Hz. Give or take production acceptances.
This is the frequency from where this speaker will drop about 12db from every divided frequency.
This would get You -6db at 37Hz from the resonance frequency of 43Hz.
So Yes, I believe You heard it.
But at -6db... It would not in any circumstance make it useful as low as that.
And this is actually been measured and confirmed by me personally.
You could always hook up Your EQ and force out something that is physically restricted, but You would just force Yourself to lower the total output as the membrane would prematurely hit the magnets.
So, taking Roger Gustavsson's advise is something to take notice of.
Cheers!
The one who succeeded was the one who didn't know it was impossible.
For all of the reasons that you have mentioned that's why I've added a REL Storm to the system. The REL is set at about 35Hz (I realize that it outputs higher than that even when it's set at 35Hz) and it's a really nice match for the 3.6R's,as I find it very fast and it goes way down.. The system sounds great (Pass X250.5 - AR LS 17 and for now a Marantz TT15) Looking at the new VPI Prime - it looks like a hell of a table for $3500. Thanks for the chat!
But if You take Roger Gustavsson's advise, You will get a lot of additional db headroom, if db-output is an issue.
This is because of the fact that speakers are built to frequency-wise satisfy customers and thus are being somewhat forceful to disregard output ability at the lowers frequency.
I have been discussing this over and over with another "Inmate", but the fact is a fact that no speaker will have a louder output then its lowest frequency related output.
The one who succeeded was the one who didn't know it was impossible.
Ok!Do You have a high pass filter to try on the MG 3.6?
I tried a subwoofer that works well with electrostats and those were Audio Pro B2-50, but it did NOT blend in well with the MG3.6 at all.
I also tried woofer towers from my RS1-b.
It felt like strictly 2 speakers despite different frequency x-over settings.
Woofers fault maybe, I don't know. I had none other to test with.But testing my MG-MC1 with my Infiniy RS1-b woofer towers worked extremely well!
Albeit that the MG-MC1 have some serous issues regarding self resonance in membrane and major resonance in magnet plate, the sound was relatively good!
The one who succeeded was the one who didn't know it was impossible.
Edits: 12/12/14 12/12/14 12/12/14
A stand alone high pass filter? No I don't. But as you know, with the REL it does have that - if I understand what you are asking... Speaking about Maggies have you heard the new line? The 3.7's in particular? I haven't and I know that we all are wondering what Magnepan has done to improve the crossovers etc... along with the other improvements. With my dedicated room (26 x 15 with 9' ceilings I have the room for 20.7's ... One should dream - right?
I think You would be quite OK with Your room with the 20.7.
Cheers!
The one who succeeded was the one who didn't know it was impossible.
That is a rather typical frequency plot of the 3.6.Well, the large peak at about 43 Hz will reduce the output from the rest of the bass driver. Removing it with a high pass filter will allow higher SPL. It will also clean up the midrange as there will be less "polution" from the bass section reaching it.
Edits: 12/12/14 12/12/14 12/12/14
Sorry!
I passed my answer just after I got my e-mail call about an answer...
Using a high pass filter, usedin an active/passive confinement before the power amp, is the best way.
Roger Gustavsson is a good person to ask about this. (Sorry Roger if I put You in the spot here!)
But doing this will get rid of a lot of inductance and capacitance issues that the power amp otherwise have to cope with.
I have done this with my Apogee's with great success.
And yes, Apogee more or less advise You to do this to give You the best audio reproduction.
The result is MUCH more dynamics and clearance.
I never dared or tried this on my MG3.6 before I sold them.
Too bad, I think.
It would have given me some more "water on the wheel".
The one who succeeded was the one who didn't know it was impossible.
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