The P7HD is good.
An 8” woofer may be hard-pressed to do what is needed if OB loaded.
Nelson has popularized the slot, it is a way to get some push-push loading and not have a big pr of woofers on the baffle.
The Pass B5 inspired XO (LX-mini) is an ideal XO solution.
dave
An 8” woofer may be hard-pressed to do what is needed if OB loaded.
Nelson has popularized the slot, it is a way to get some push-push loading and not have a big pr of woofers on the baffle.
The Pass B5 inspired XO (LX-mini) is an ideal XO solution.
dave
Thanks Dave!
As I said it is a first toe in the water - and I have them on hand!
Do you still sell MA? Before I go to MS?
Thanks
MG
As I said it is a first toe in the water - and I have them on hand!
Do you still sell MA? Before I go to MS?
Thanks
MG
I only have a few EnABLed demos left, but i do have stock A7.3, A7ms, a pair of P7HD but i really need to give them some listening time, P7PHD, A7p, CHN-110, A5.2, A6.2m.
For the stock drivers that aren’t demos, that i have them already in Canada and Canada Post so much less than shipping from the US it makes them worthwhile over Madisound. And i may be the only one in NA with A7.3 left.
Probably some i have missed.
dave
For the stock drivers that aren’t demos, that i have them already in Canada and Canada Post so much less than shipping from the US it makes them worthwhile over Madisound. And i may be the only one in NA with A7.3 left.
Probably some i have missed.
dave
For a decent OB, you will need at least 4 x 8" woofers per side... (More is more)..
Just my 2c...
Hi Vix! What kind of OB was it? Slot loaded or just flat? How big? Did you do any eq? Are there posts in this thread I should look at?
Thanks!
MG
Thanks!
MG
I like the MA Pluvia 7PHD. It has issues starting above 4 KHz; not real bad but it takes some X/O work to get it to sound the best. NOT a true fullrange, it is purposely rolled off on the high end. I use mine with a super tweeter.
Nelson's XO has a -4db shelf above 1k. Is this maybe too much for this driver?
Any opinions?
Thanks
MG
I experiment all the time; that's the only way I do it. I do simple sims sometimes but only using the free online ones. Clip leads are my friends; I do external X/O and any attenuation to start; that way I can easily try various values. Allow for this for any box volume. Most of my builds for only me I keep the X/O external. For others; I allow enough space for internal mounting and make sure to include all internal volumes that subtract from the enclosure. My 2 cents anyway.
Just a random thought.
Anyone here tried an alpair 7ms or 11ms in a no-baffle configuration like how the fullrange driver is mounted on a linkwitz lxmini with a tunnel with absorbing material behind the driver. And use a single subwoofer operating below 80hz for bass extension. How would they sound.
Staging should not be affected as frequencies below 80hz is omnidirectional (correct me if im wrong)
What would be the cons of this configuration except the power handling
Anyone here tried an alpair 7ms or 11ms in a no-baffle configuration like how the fullrange driver is mounted on a linkwitz lxmini with a tunnel with absorbing material behind the driver. And use a single subwoofer operating below 80hz for bass extension. How would they sound.
Staging should not be affected as frequencies below 80hz is omnidirectional (correct me if im wrong)
What would be the cons of this configuration except the power handling
Attachments
Neither drive unit will make it unaided to 80Hz under those conditions; anechoic baffleless -3dB mass corner frequency is 200.87Hz & 214.978Hz for the 7MS & 11MS respectively using the published data. So you would either need significant EQ, or cross higher, as Linkwitz did.
Aah.. Right..
I thought the published measurements are without baffle in an anechoic chamber.
well that random thought died pretty quickly..!
Was looking forward to some interesting conversations.
Take care guys
I thought the published measurements are without baffle in an anechoic chamber.
well that random thought died pretty quickly..!
Was looking forward to some interesting conversations.
Take care guys
Anechoic on an IEC compliant test baffle. That's how the vast majority of manufacturer anechoic measurements are taken. Seas are probably the most famous exception: they use test boxes, the dimensions of which are provided on their site, with the mathematical T/S derived curve also provided on the FR chart.
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Shouldn’t it be at a higher frequeny? What is the starting point of the dipole cancelation with a 122mmm wide circular baffle?
I have never been convinced that a baffleless OB driver is a useful approach.
dave
Purely mathematical T/S derivation which assumes monopole conditions; additional cancellation effects from dipole etc. losses will kick in far higher.
As the LF is concerned, neither have I. Sure, you can use multiple drivers, usually with copious amounts of power & EQ, but since it's about the least efficient way of using drivers in the LF I can think of, I generally find my interest goes off a cliff faster than Wile E. Coyote. 😉
You could try listening in the extreme near field, like headphones but a couple of feet from your ears. Open baffle or no baffle for nearfield full range monitors?
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The thing that attracted me to lxminis are the simplicity.
My design aims were that all frequencies above 80hz should be from single driver. But now its clear for baffle less none of the FR drivers can do that
My design aims were that all frequencies above 80hz should be from single driver. But now its clear for baffle less none of the FR drivers can do that