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Multi-Way Conventional loudspeakers with crossovers

Small active 3-way floor stander with a punch
Small active 3-way floor stander with a punch
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Old 14th March 2019, 05:42 PM   #151
nipper1 is offline nipper1  United States
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Join Date: Feb 2017
Quote:
Originally Posted by Alex Music View Post
Ok, about SPL

1 X SATORI MW16PNW-4 = 106dB

2 X SATORI MW16PNW-8 = 106dB or 109dB ?
It does get tricky here. If you REALLY want to know what's going on with the FR/SPL; you need to get 3rd party testing results. I have read a few on both MR and MW. SPL +6dB voltage sensitivity but in reality; 3 dB in power for parallel. Can your amplifiers do 2 Ohms??? In practice, I have found that +6 dB voltage sensitivity does not necessarily mean +3 dB power gain; theory is great on paper; that's why I experiment a lot. Best advice is to get those with test equipment and software simulations that are known to be ACCURATE to chime in here. I trust my ears; BUT, others ONLY trust pure theory...all for now...good luck...
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Old 15th March 2019, 11:26 AM   #152
nipper1 is offline nipper1  United States
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Join Date: Feb 2017
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Originally Posted by nipper1 View Post
It does get tricky here. If you REALLY want to know what's going on with the FR/SPL; you need to get 3rd party testing results. I have read a few on both MR and MW. SPL +6dB voltage sensitivity but in reality; 3 dB in power for parallel. Can your amplifiers do 2 Ohms??? In practice, I have found that +6 dB voltage sensitivity does not necessarily mean +3 dB power gain; theory is great on paper; that's why I experiment a lot. Best advice is to get those with test equipment and software simulations that are known to be ACCURATE to chime in here. I trust my ears; BUT, others ONLY trust pure theory...all for now...good luck...
Sorry, I now realize this may be confusing; I was way past sleepy when I wrote this last response. The short answer is, when you parallel two identical drivers; the voltage sensitivity increases by 6 dB. So, 2 of the 8 Ohm MW in parallel should be about 94 dB VOLTAGE sensitivity. BUT, the tricky part is you are asking about the maximum SPL expected; this is usually done by precision measurement or very accurate simulations. I assume you want a very loud system or you wouldn't be asking in this manner. Some of the tests and reviews include a power type test where they gradually increase the drive voltage and record the ever increasing distortion levels. If you REALLY want maximum sensitivity, you could parallel two of the 4 Ohm MW's BUT then you would only have 2 Ohms and most amplifiers don't like a load that low. If it were me; I would choose one 4 Ohm MW "mid" and pad the tweeter to match SPL's with that. That is just my personal take. Again; best of luck!
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