Depends on how deaf you are. 60w on a 86db sensitive speaker is loud as hell, louder than most people could even tolerate in a room. I have towers with an RS180 in them and they're rated at 60w, my word they get loud with little power.
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Any reason why the Satori MT19CP coax isn't more used?
- Thread starter Defo
- Start date
Depends on how deaf you are. 60w on a 86db sensitive speaker is loud as hell, louder than most people could even tolerate in a room. I have towers with an RS180 in them and they're rated at 60w, my word they get loud with little power.
This is probably a decent driver, it was briefly considered for the upcoming Saranna (where I'm using an 8" coax from Sica).
As you mention it is expensive for commercial use. It's relatively rare to see such expensive drivers in commercial designs, but there are exceptions of course. It is also a relatively new driver, so it may take some time for adoption.
That's exactly the point I was trying to make, your $70 driver has the same power handling as a $270 dollar driver. For that amount of money I would have expected at least twice the power handling.
At that price you're looking at some pretty decent entry level pro sound coaxs. FaitalPro 6hx150 and 8hx150 come to mind.
Doesn't really matter what the power handling is if you use them inside, unless you intend to listen at hearing damage levels. Equating power handling with cost is silly and doesn't consider the use cases of the drivers.
What's silly and irrelevant is you keep bringing up hearing loss which doesn't matter in terms of the thread. Literally every speaker tested here at ASR can cause hearing damage.
Power handling is much more than the max SPL the speaker can produce. It's also how it handles the thermal buildup. This driver would most likely be used in a closed box with no air exchanges and a woofer supporting the lower frequencies. As the heat builds up the voice coil in the woofer changes it's resistance. That increase in resistance lowers the SPL produced creating a non linear response compared to what's expected. It can also cause the xover points, in an analog xover, to drift off of their intended targets changing the frequency response.
This doesn't have to occur at max continuous power, lower power levels for prolonged periods of time can cause the same internal heating.
As an aside, a 86 DB/w driver with 60 watts is maybe good for 100 DB at one meter. IIRC OSHA regs are 2 hours per day at 100 DB, A weighted. Not too likely to cause hearing loss
Irrelevant? Not at all, you just aren't getting it. No one is going to be running 60w into these things in a normal home environment. Not my fault you can't connect the dots here. You're worried about things that just won't be an issue at all in a home environment with this driver, or really most hifi drivers. Have a good one. Setting to ignore.
So if you were to set this up facing forward (30 degree off axis) you wouldn't have that break up.
IIRC Erin covered this in some of his speaker posts. Facing the speakers forward and not aimed at the 'sweet spot'
As to a Coax vs Full Range... there is a Xover and I have to wonder if they do this intentionally?
I could have sworn I heard this somewhere?
Hi,
I think this is unnecessary fight how much output or power is needed without context, it's just noise before application/context is defined.
For example 86db at 1kHz at 1m distance is easy even with small driver (small volume displacement) and low power, but 86db at 30Hz 1m away is already quite serious business and needs ~50cm^3 of volume displacement if it is a closed box. The MT19cp can do about 110cm^3 with xmax so can reach it 86db @ 30Hz @ 1m, and how much power it needs would depend on size of the box. This is by the way max output, so, if one takes away distance from speaker to listening spot and counts in some dynamic headroom for the music and considers frequency response needs to be flat from 30Hz and up then this driver can do perhaps 70db average at max with full blast before xmax is passed on peaks. So, it all is very much dependent on what the driver (and the whole system) is used for and what are the requirements like SPL at some particular low frequency at which distance. Perhaps it's a reflex box, or three way system, what ever the system needs be to meet requirements and expectations. The driver might be correct choice for one context and project, and wrong for another. Peace
www.diyaudio.com
I think this is unnecessary fight how much output or power is needed without context, it's just noise before application/context is defined.
For example 86db at 1kHz at 1m distance is easy even with small driver (small volume displacement) and low power, but 86db at 30Hz 1m away is already quite serious business and needs ~50cm^3 of volume displacement if it is a closed box. The MT19cp can do about 110cm^3 with xmax so can reach it 86db @ 30Hz @ 1m, and how much power it needs would depend on size of the box. This is by the way max output, so, if one takes away distance from speaker to listening spot and counts in some dynamic headroom for the music and considers frequency response needs to be flat from 30Hz and up then this driver can do perhaps 70db average at max with full blast before xmax is passed on peaks. So, it all is very much dependent on what the driver (and the whole system) is used for and what are the requirements like SPL at some particular low frequency at which distance. Perhaps it's a reflex box, or three way system, what ever the system needs be to meet requirements and expectations. The driver might be correct choice for one context and project, and wrong for another. Peace
Volume Displacement For SPL Chart
The following is the chart for how much air must be moved to produce which SPL @ 1Meter/1Watt. For most rooms, the 1Meter/1Watt figure will be reasonably uniform throughout the room. These figures apply for under 100 Hz. You can extrapolate for above 100 Hz as well. However, below 100 Hz is...
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Will add that there are at least 2 significant threads on diyaudio regarding this driver. so not clear what added value this thread has here.
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That place is kind of a mess though and not everyone goes there.
Yes, it can be but there are some smart folks there too (and many more DIYers!).
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