Thanks, I will take an eye on the site!this is a good site. search it, manu things there. and dont forget to see difference between rms and peak values.
Calculation voltage and power - gain and loss - sengpielaudio Sengpiel Berlin
Calculation: Voltage and Power - Gain and Loss - Eberhard Sengpiel sengpielaudiosengpielaudio.com
The issue is the speaker placement. Not optimal, but what I have to work with in my office.I dont think it is that bad as you say. for me looks ok. only bigger problem is at 10k and a bit at 5k, I think you just need to adjust mic position to get this a bit better or speaker, easier with the mic first. everything else can be done with preference EQ. I recommend that you dont average anything, smoothing 1/12oct is workable if room not that good, but helps to p… off yourself when seeing things without averages sometimes, to force yourself to make it better, you need to hate this as a trigger to make it better
Aha, there’s a lot of terms like a dictionary!this is a good site. search it, many good things there. and dont forget to see difference between rms and peak values.
Calculation voltage and power - gain and loss - sengpielaudio Sengpiel Berlin
Calculation: Voltage and Power - Gain and Loss - Eberhard Sengpiel sengpielaudio
Aha, there’s a lot of terms like a dictionary!
I first thought it was only a single article, thank you so much for insisting
PSU watts should also be there
I knew that, perhaps not as detailed.here is more “wood”, when thinking about amps in these pictures it is normal class D hypex 500W rated amp, you can check their website if you want to dig documents and parameters for amps as it gives you a perspective what can be achieved. in most cases you wont even get those 500W. if you look at distortion, efficiency at various loads you can see there will be not much more than half the power out of if. deeper in woods more “wood”. so watts also is a type of marketing
I averaged the Left and Right channels to show the average amount of gain I am getting with two speakers vs. one - it varies with respect to frequency in my setup. Also, the measurements I used are without EQ for room correction applied. I have room correction applied when actually listening.
I’m surprised to see L+R values below individual ones on the 4 to 7k region, why is it? Phase cancellation due to differences in distance between mic and each speakers? It is on the order of centimeters…
That is my guess. I haven't looked into it any further than taking the measurements. If I moved the speakers into a larger room, away from the walls, I probably could get more insight into the effect. Nonetheless, the speakers are positioned where they will remain.
Maybe what has been signaled before, depending on congruence of the speakers and frequencies, you can obtain a direct sum (+6 dB) or an average value (+3dB). Actually I’m waiting for a second G Three, so I will verify in my room.That is my guess. I haven't looked into it any further than taking the measurements. If I moved the speakers into a larger room, away from the walls, I probably could get more insight into the effect. Nonetheless, the speakers are positioned where they will remain.
The reason that I actually made the measurements probably is worth noting. I put together a spreadsheet, linked below, for people to calculate how much amplifier power they would need for their system. I always had assumed that adding a second speaker adds +6dB to the total SPL, which your data confirms. However, various audio websites I visited were using a factor of +3dB. That got my curiosity going, which is why I measured my setup. I ended up using +3dB in the spreadsheet for two speakers (actually, a "10" multiplier rather than "20" for the log calculation), and added notes indicating that it could be as high as +6dB for two speakers.
Amplifier Power Requirement
docs.google.com
Oups, sorry, another question: you wrote “add 15-20 dB for transients…” aside on the max SPL. So if I listen on a 75 dB average, should take into account my system can reach 95 dB to don’t clip on transients?That is my guess. I haven't looked into it any further than taking the measurements. If I moved the speakers into a larger room, away from the walls, I probably could get more insight into the effect. Nonetheless, the speakers are positioned where they will remain.
The reason that I actually made the measurements probably is worth noting. I put together a spreadsheet, linked below, for people to calculate how much amplifier power they would need for their system. I always had assumed that adding a second speaker adds +6dB to the total SPL, which Viesturs' data confirms. However, various audio websites I visited were using a factor of +3dB. That got my curiosity going, which is why I measured my setup. I ended up using +3dB in the spreadsheet for two speakers (actually, a "10" multiplier rather than "20" for the log calculation), and added notes indicating that it could be as high as +6dB for two speakers.
Amplifier Power Requirement
Yes. 20dB probably is a good number.
many many ways how to deal with levels, input and output should never clip that is first thing, when signal is clipping you cook loudspeaker as it wants to dissipate more with cut sines… long story
Well, actually I’m trying to adjust the different possibilities of digital, preamp output and gain input. By ear, the chain sounds better with digital volume close to the max or in the last third (I don’t have dBFS indicator on the streamer-DAC, only percentages), output level set to 500 mVrms and gain on 96 dB @ 1Vrms.well actually proper way how to set max level is when you have monitor controller or gain knob at max with minimum possible distortion from amp and loudspeaker. volume control is attenuator, when it is not engaged no problem.. roughly speaking attenuator does its crap.. no clipping allowed
How complicated!
