Piratelogic has a kit for servo drive:https://piratelogic.nl/data/docs/products/eve/piratelogic.eve.2018.0.manual.en.pdf
They have sensors too
Bernt
They have sensors too
Bernt
If you say so, I don't pay any attention to DIY electronics.
No.
Yes, since a typical speaker cable run provides it.
No, don't need one since I already have the aforementioned 'acoustic solution to this acoustic problem'.
GM
Rythmikaudio do servo kits for diy applications.
For me FLH has been the best I've heard, followed by servo subs. Sound quality between the 2 types is very close but the horns have the effortless dynamic output that you'd need a lot of servo subs to match.
Rob.
For me FLH has been the best I've heard, followed by servo subs. Sound quality between the 2 types is very close but the horns have the effortless dynamic output that you'd need a lot of servo subs to match.
Rob.
Pretty easy really, just overpower the room.
It's kind of amazing how well it works...but I do mean OVERPOWER the room..
Very nice. No doubt quite enjoyable.
My comments are based on my over the top amounts of bass, and then with mains that outrun even that.
Everyday is a pair of double 18"s tuned to 31Hz, sometimes I add considerably more sub power (outdoors) when the wine is flowing
My experience is that good bass only comes from a complete good system.
And honestly, the sub part is the easiest to get right, other than getting extension and SPL.
The tuning part...spot on phase and time alignment is more difficult than choice of sub I think (provided a requisite level of quality in the sub)
Sure, imo filtering/eqing is one of the prime components of the system.
Super important, and where most all systems could probably improve.
Me, I'm big into FIR and linear phase alignments, when i can afford modest latency.
This discussion is apples-and-oranges.
For advocates of motional feedback, having a good FR is trivial and just taken for granted as a basic feature that anybody with EQ can get. So boasting about achieving a flat or extended response is just a starting point of yesteryear.
Besides the ability to driver subs to produce clean sound below their system resonances, MFB advocates are chasing down distortion (which can be 10-20% in subs) and aiming for "fast" transients, tight bass and no "box sound".
For advocates of motional feedback, having a good FR is trivial and just taken for granted as a basic feature that anybody with EQ can get. So boasting about achieving a flat or extended response is just a starting point of yesteryear.
Besides the ability to driver subs to produce clean sound below their system resonances, MFB advocates are chasing down distortion (which can be 10-20% in subs) and aiming for "fast" transients, tight bass and no "box sound".
Last edited:
They do 2 quote different things.
A sevo box adds a feedback look to the woofer circuit (a special sensor or extra voice coil) to make the speaker’s output more closely resemble the amplifier input.
A force cancelation system uses multiple woofers mounted such that each driver’s mechanical reactive energy is cancelled by the other driver, dramatically reducing the vibrational load on the box.
Ideally your push-push force cancelation woofer woud use 2 servo woofers in each box (and you need at least 2 boxes).
The Rythmic kit would be an easy place to start playing.
dave
A cardiode microphone is something known for its reduced collection lobe and focused primarily on the sound source, without capturing the sounds coming from the environment. All the opposite of the omnidirectional, typical of the old-fashioned radio recorders and modern cell phones.
A super-cardiode microphone is, for example, the one used by National Geographic professionals (chapoó for them) to capture the trill of a bird located 100 meters away. It is, like a rifle shot! (but not to kill the creature, but to perpetuate its beauty in a film)
Now, a cardiode subwoofer?
What do you mean by that terminology?
A cardiode microphone is something known for its reduced collection lobe and focused primarily on the sound source, without capturing the sounds coming from the environment. All the opposite of the omnidirectional, typical of the old-fashioned radio recorders and modern cell phones.
A super-cardiode microphone is, for example, the one used by National Geographic professionals (chapoó for them) to capture the trill of a bird located 100 meters away. It is, like a rifle shot! (but not to kill the creature, but to perpetuate its beauty in a film)
Now, a cardiode subwoofer?
What do you mean by that terminology?
Cardioid subwoofer for constant directivity.
It should reduce the room's influence, but how well does it work?
They are used in lives, but in the room does it make sense?
It doesn't work well in small rooms.
For live, cardioid is used to reduce sub spill to particular spots to the rear or sides of the sub array. Typically somewhere in the stage area.
It needs room to breathe. Any nearby walls etc create mirror 'virtual' subs and reduce its effectiveness.
Cardioid also always diminishes the desirable front bass a bit, and generally makes a somewhat mushier sound.
I've never studied those, or open baffle,....or anything really other than FLH, sealed, and ported. Dipole sounds interesting. Any good project link to begin education? thx
I think this thread needs fixing.
For those few who have experienced MFB, there is no question that extending feedback to the weakest part of the chain is a big improvement in bass. But that's not a lot of people.
So I think that I and other MFB advocates should just sign off and leave the discussion to folks with no grasp of MFB and who want to debate what tweaks help passive speaker systems.
B.
For those few who have experienced MFB, there is no question that extending feedback to the weakest part of the chain is a big improvement in bass. But that's not a lot of people.
So I think that I and other MFB advocates should just sign off and leave the discussion to folks with no grasp of MFB and who want to debate what tweaks help passive speaker systems.
B.
Bear in mind not all open baffles are dipoles, and not all dipoles are open baffles. Linkwitz Lab is the go to place.
In Pursuit of a 20-20k Dipole Loudspeaker
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.