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My Purifi amp struggles driving my 86dB / 6Ohm speakers while playing large orchestral music. All this since I implemented Dirac Live! Waiting for the 1kW Purifi ...
Woa. What do you mean by "struggles"? I have 8R 91db jbl speakers and was just about to place an order for purifi eigentakt rated 200w into 8 thinking it's more than enough..My Purifi amp struggles driving my 86dB / 6Ohm speakers while playing large orchestral music. All this since I implemented Dirac Live! Waiting for the 1kW Purifi ...
Woa. What do you mean by "struggles"? I have 8R 91db jbl speakers and was just about to place an order for purifi eigentakt rated 200w into 8 thinking it's more than enough..
It will be higher obviously. What is you point?
I would guess 'average' frequency of music is closer to 1000 than 30 Hz, obviously depending on music. My earlier observations were based on King/I Feel the...., iirc.
My test tone is 31.5 Hz
Perhaps I I'll try it.
I would expect ~0.35 W ?
Or is background noise level lower at night?
Where does it state hearing sensitivity increases at night?https://en.wikipedia.org/wiki/Tensor_tympani_muscle
but yes, background noise will also be lower but that only increases DR slightly. The fact that the hearing becomes more sensitive means you will be needing less power to achieve the same perceived loudness.
The added power requirements of room / speaker DSP are underestimated by most. I think part of it is the "drop the peaks" vs "fill the dips" discussion. While "drop the peaks" instead of "filling the dips" will buy you some headroom in the digital domain once it get to an analog amp there really is not a difference as the "dip frequencies" are going to be boosted relative to all the other frequencies which just takes away headroom. Most room correction software will reduce headroom by 6 to10 dB which translates into a lot of additional power requirements.Am I misunderstanding... I thought room correction software drops the relative output to ensure that any corrective peaks don't clip. I would've thought that before you got clipping, you'd have a complaint about not getting loud enough...
It really is music dependent.I wonder what the frequency spectrum of music is? We know it is music dependent. It also takes more power the lower the freq to get equal loudness with higher ones.
Here's one FFT of music found with a quick search. I could not find the name of the music.
The NIOSH app has C weighting, -3 dB at 30 Hz
Since speakers output SPL which is directly related to the input voltage I prefer not to use the term dBA when talking about power and music.
of course at 1kHz whether the reading is Z-weighting or B or C or D will give the same results.
Looks like pink noise?
So the air pressure is oscillated 2/sec or 2 Hz.With headphone you can have 8 Hz.
The 2hz is two pressure by second. Nothing to do with a room size.