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Just know, very few speakers rated 94dB are actually 94dB sensitive. Klipsch are well known to be very generous with sensitivities for example, but there are plenty adding a "few" dB here and there. Often at the high end of the sensitivity scale one forgoes a fair bit of bass sensitivity. I...

15" is possible and very fun, but you'll want a different compression driver and a properly implemented crossover for all the components, generics don't make for hifi speakers.

I would say that that requirement would be well served by a classic HE type speaker. 12" and up in my estimation. The live acoustic of wooden soundboards match well with a well behaved design like the new Klipsch Heresy (the older types aren't really coherent without rework)

That said, there are some rooms which are so unfortunately proportioned, that no amount of optimization and EQ will net one even bass. This is the case for co-incident low order axial modes

I do, I really like what convolution engines do with the bass, dry it up and even it out and very simply so. My experience with the multiple sub optimization is that it has been significant in improving evenness (esp with multiple seats) and other gains before one then applies room correction...

Rooms are quite a wildcard. Dirac is a FIR room correction convolution engine, the optimization of multiple subs has in my limited experience (I think four subs has only been 6-7 setups) been PEQ, delay and phase adjustment filters and some room placement optimization. I have seen headroom...

If this is post a multi subwoofer optimization, otherwise one leaves so much meat on the table.

We have a different understanding of spaciousness then and likely differ in our approach. Spaces with a decay measured as RT60 on the order of as low as 250ms in my world aren't spacious sounding though they would highlight the sense of space in the recording if not rendering it. There are other...

My experience has been to be careful with broadband absorption, use it selectively please as it's easy to kill the spaciousness. In my view the sealed subs being better is a myth. Many under-sized commercial vented subs have issues, but not all subs fall in this category. I will say that the...

If the mouth is say >1m^2 big and the acoustic impedance of the lowest mode matches with that of the horn then you can get something which I can only summarise with a huge grin (subject to complete optimization of the room with the length of the horn subwoofer). I have also had some "smaller"...

Also there are some subs which when placed in a corner can delay a reflection partially by their length which is sometimes a edit:neat component to sorting out a room.

Some okes want the boomy bass and go completely nuts on the EQ after a system is well integrated. Seen things ^_^

I.m.e vented and sealed don't matter much in as far as they must be well executed. WIth multiples one can get further with more smaller sealed subs however one can place on beefy vented sub in a corner and smaller subs elsewhere to goof effect. The time domain behaviour of a room is orders of...

I have done a couple 3 and 4 sub setups and am yet to come off, thinking that it wasn't really well worth it. That said, some rooms are well behaved enough, that one can get away with two.

Safe bet imho unless if it's a specific membrane or mass loaded part and you have to look at optimizing performance within a given budget for something like a performance space with measurable acoustics. I had a good chat with Ivan last week and reaffirmed that Rockwool of local manufacture is...

Welcome to the acoustics challenges in SA. Any resistive absorption product that is sold with defined performance is either entirely imported or pie in the sky I'm afraid so one can try and emulate a half plane reflection at 40/50mm and calculate material properties based on that but this gets...

I have an SNA and know its fan well :D The LXP is the Hybrid and it is dead silent. I'll look into the Goodwe.

The Luxpower 5kW Hybrid is completely fanless and worth a look too.

Substantial gains in sound often have minimal impact on a measured result if one looks at a single metric. It is just a graph. Stop chasing it in isolation and focus on what's relevant (i've not read the thread yet, will do so tonight). One can read many things into a FR. If I were to remove my...

Anyone who will look at a FR plot in isolation will at best be able to give an indication of tonal trends. One can guess some things and spot some SBIR, modes and a couple of things one can try guess. Measurements are a diagnostic tool that allow one to narrow in on something, not a singular...