^ Well that's a completely different thing.
You said that you were disappointed that the inputs were not grounded. It's been clearly demonstrated that they are in-fact. So, it's just terminology to clear up.
Rather than try to use technical terms... what exactly do you want?
TNT was helping you, I assure you.
You said that you were disappointed that the inputs were not grounded. It's been clearly demonstrated that they are in-fact. So, it's just terminology to clear up.
Rather than try to use technical terms... what exactly do you want?
TNT was helping you, I assure you.
Balanced inputs is the correct term.
The Dunning-Kruger effect occurs when a person's lack of knowledge and skills in a certain area cause them to overestimate their own competence
as I said earlier, I am no expert in electronics, not in the least. Should be obvious by my mix up of terminology. TNT is still butt-hurt over "active radiator technology" lol
Reasons why;
The Dunning-Kruger effect occurs when a person's lack of knowledge and skills in a certain area cause them to overestimate their own competence
as I said earlier, I am no expert in electronics, not in the least. Should be obvious by my mix up of terminology. TNT is still butt-hurt over "active radiator technology" lol
Reasons why;
- Insecurity or low self-esteem: Someone may try to make themselves feel better by putting others down.
- Lack of empathy: They may not be able to relate to others and their perspectives.
- A need for control: They may want to assert their dominance or feel like they are in charge.
- Arrogance: They may think they are superior to others and therefore feel entitled to speak down to them.
- Ignorance or misinformation: They may not realize that they are being condescending and may genuinely believe that they are helping or teaching others.
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It's been shown multiple times how this little gem (the ACA mini) can be used with balanced inputs / differential signal with a little fiddling. This is DIY. People do all sorts of fun things.
Read a few threads. Ask a few questions. Have some fun.
Must get coffee. Have a great day.
Read a few threads. Ask a few questions. Have some fun.
Must get coffee. Have a great day.
I agree, I just would like a product very similar to this one, with balanced inputs... I don't want to have rely on my adolescent skills in soldering and electronical engineering to be my downfall lol!
^ Seriously, I have to run for a bit. Hope everyone works out their differences.
You don't need to solder much of anything differently... just some input wiring and how you connect the speakers. However... It is wise to understand limitations. If you're uncomfortable...
A product very similar to this with balanced inputs...
I'd humbly submit the "ACA 1.8" for consideration. Get two of them. There are full instructions for how to do all the proper soldering etc. If you get the full kit... it's an absolute dream to assemble and even better for listening.
You don't need to solder much of anything differently... just some input wiring and how you connect the speakers. However... It is wise to understand limitations. If you're uncomfortable...
A product very similar to this with balanced inputs...
I'd humbly submit the "ACA 1.8" for consideration. Get two of them. There are full instructions for how to do all the proper soldering etc. If you get the full kit... it's an absolute dream to assemble and even better for listening.
I appreciate your patience
according to AI at about 110db/1w;
"To reach 120 dB, you would need to increase the power by 10 dB. In audio systems, each 3 dB increase in sound level requires a doubling of power. Therefore, to increase from 110 dB to 120 dB, you would need to double the power three times, which is equivalent to increasing the power by a factor of 2 x 2 x 2 = 8.
So, to reach 120 dB with an audio system that has 110 dB/1W efficiency, you would need 8 watts of power."
So I would think to at least dbl that for the amp I go with.
according to AI at about 110db/1w;
"To reach 120 dB, you would need to increase the power by 10 dB. In audio systems, each 3 dB increase in sound level requires a doubling of power. Therefore, to increase from 110 dB to 120 dB, you would need to double the power three times, which is equivalent to increasing the power by a factor of 2 x 2 x 2 = 8.
So, to reach 120 dB with an audio system that has 110 dB/1W efficiency, you would need 8 watts of power."
So I would think to at least dbl that for the amp I go with.
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I'd maybe start a new thread for system / amp advice. Your desires and gear seem pretty unique.
Either way... operating bridged / balanced will increase the output depending on the load.
https://cdn.shopify.com/s/files/1/1006/5046/files/ACA_Monoblock_Operation_RevA.pdf
Either way... operating bridged / balanced will increase the output depending on the load.
https://cdn.shopify.com/s/files/1/1006/5046/files/ACA_Monoblock_Operation_RevA.pdf
Jet like F15 you need a reach 120 dB...you will lose hearing really fast.....we use 80db
Not something i would do, the ACAmini is small enuff that its Claa A-ness does not mean huge heat or power consumption.
dave
Hi 👋
Have you forgotten headroom? 120db peaks are very common true peak levels at the imax theater I visit. I anticipate true peak to be about 15db over rms. If I want to use my monitors in far field, power requirements only increase. One person commented that in there country, theaters are limited to 95db average. That would equate to peaks of 110db. That is my reasoning.
At 120db rms... ears would not last long. 115db and higher true peak levels are a common day occurrence
I just clapped my hands about 25" away from the microphone and its spl true peak reads 125db.... see what I mean?
A 10 dB increase is a factor of 10 increase in power. So to get 120 dB @ 1 m from a driver with a rated efficiency of 110 dB @ 1 W, 1 m, you'll need to provide 10 W.
Recall:
- Power: P(dB) = 10*log10(P1/P2)
- Amplitude: A(dB) = 20*log10(A1/A2)
Perhaps go back and study the fundamentals rather than relying on AI. Just a thought... 😉
Tom
AI is wonderful tool... when correct lol. In this case it was off by 2db. Thank you for the correction. I can teach the AI that formula now.
My explanation of headroom, above, do you see fault in it? That info, I learned here, on the forums.
My explanation of headroom, above, do you see fault in it? That info, I learned here, on the forums.
Your explanation does make sense. The difference between the average power and the peak power might be even higher than the 15 dB you assume. It depends on the type of music, quality of recording, etc. Sound-on-Sound has a good article on this: https://www.soundonsound.com/sound-advice/dynamic-range-loudness-war
You may want to think about whether 95-105 dB average SPL is needed, though. Have you ever measured the SPL during a listening session? Don't have an SPL meter? No problem. There are apps... The one by Studio 6 Digital is good: https://www.studiosixdigital.com/audiotools-modules-2/spl-modules/spl_meter/
They may not be super accurate, but should at least get you the average SPL within 5-10 dB of the actual value.
Tom
You may want to think about whether 95-105 dB average SPL is needed, though. Have you ever measured the SPL during a listening session? Don't have an SPL meter? No problem. There are apps... The one by Studio 6 Digital is good: https://www.studiosixdigital.com/audiotools-modules-2/spl-modules/spl_meter/
They may not be super accurate, but should at least get you the average SPL within 5-10 dB of the actual value.
Tom
its rare that you will see more than 15db of true peak, over peak Rms. What I mean is, for example, cinema material....will have a max average, and you won't see much of anything higher than 15db than that max average. You can draw a line there and the material will general stay under that mark. A quiet scene will come...and its possible material still might sometimes reach towards the top side of dynamics. So if 105db is max average....120db true peak.....just because a scene drops the average down to 65bd and then a loud even happens in the middle of the quietness, that touches 120db.... its sort of misleading but now it appears that dynamics could be 55db over average..... It would be less misleading if you looked at it as how much lower Average could be under max true peak.
I never listen to the new system without my microphone on. 95-105db average is loud. This is at 1meter. I am just trying to have enough power for Far field is all.
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I agree with you sir, I am just pointing out that those figures are concerning RMS not True Peak... true Peak values of 115db or more are a common day occurrence... Separate True Peak from RMS and we are on the same page....I build mastering monitors and I want my system be able to produce real life dynamics without distortion is all.
Open up REW...open the SPL meter and clap....
For mastering it suggested to monitor at about 72-75db and that is my intentions. I do have sessions of listening that are louder but as stated above, damage comes from continuous listening at those levels that I would consider loud enough (95db), and I do not listen to the louder levels continuously for that long.
I wish this type of information was shared more broadly, though... I might of worn ear plugs as a drummer, in my youth.
I did note 105db averages and 120db true peaks at the movie theater.... They weren't 5 minute long passages though. Rather a action scene of maybe 1 minute? What do you think about that?
Open up REW...open the SPL meter and clap....
For mastering it suggested to monitor at about 72-75db and that is my intentions. I do have sessions of listening that are louder but as stated above, damage comes from continuous listening at those levels that I would consider loud enough (95db), and I do not listen to the louder levels continuously for that long.
I wish this type of information was shared more broadly, though... I might of worn ear plugs as a drummer, in my youth.
I did note 105db averages and 120db true peaks at the movie theater.... They weren't 5 minute long passages though. Rather a action scene of maybe 1 minute? What do you think about that?
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If you are running Linux, sox can measure peak and RMS amplitudes.
Ed
Code:
% sox danish_national_symphony_orchestra_blue_danube.wav zz.wav stats
Overall Left Right
DC offset 0.000004 0.000001 0.000004
Min level -0.663940 -0.600006 -0.663940
Max level 0.746002 0.746002 0.729736
Pk lev dB -2.55 -2.55 -2.74
RMS lev dB -25.12 -25.23 -25.02
RMS Pk dB -12.68 -12.68 -13.64
RMS Tr dB -61.87 -59.95 -61.87
Crest factor - 13.62 13.00
Flat factor 0.00 0.00 0.00
Pk count 2 2 2
Bit-depth 16/16 16/16 16/16
Num samples 26.9M
Length s 609.785
Scale max 1.000000
Window s 0.050
%
%
% sox metallica_enter_sandman.wav zz.wav stats
Overall Left Right
DC offset -0.000000 -0.000000 -0.000000
Min level -0.999969 -0.999969 -0.999969
Max level 0.999939 0.999939 0.999939
Pk lev dB -0.00 -0.00 -0.00
RMS lev dB -15.29 -15.31 -15.28
RMS Pk dB -9.51 -9.51 -10.29
RMS Tr dB -inf -inf -inf
Crest factor - 5.83 5.81
Flat factor 6.47 7.00 6.09
Pk count 154 126 183
Bit-depth 16/16 16/16 16/16
Num samples 14.6M
Length s 331.560
Scale max 1.000000
Window s 0.050Ed
If you dont have a true peak meter it doesnt count... true peak and peak are not created equal. True peak has a much shorter window. On REW, only the spl meter can read true peak (where says LZPeak, for example ... the RTA in REW cannot
So I would suggest verifying if you are capturing true peak... if you clap, within a meter of microphone, and are only reaching 77db... Thats definitely not true peak
Forgive me If you knew all that already
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I misure the amp out too.....look here https://www.diyaudio.com/community/...wer-do-your-speakers-need.204857/post-7268894