A Test. How much Voltage (power) do your speakers need? - Page 40 - diyAudio
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View Poll Results: I measured the test tone at:
2 volts or less 150 37.50%
Between 2-5 volts 137 34.25%
Between 5-10 volts 51 12.75%
Between 10-20 volts 24 6.00%
Over 20 volts. 38 9.50%
Voters: 400. You may not vote on this poll

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Old 5th February 2012, 08:24 PM   #391
Pano is offline Pano  United States
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Quote:
Originally Posted by mr_push_pull View Post
...would make sense for me to fill in my current actual income, not the income I wish or my income from 10 years ago. no?
Yes.

The test is starting to move beyond that, tho. For those of you who own an SPL meter you can set the industry standard of 85dB on a -18dB pink noise signal (mine or another). You can accept that as your maximum volume or see how it compare with what you set by ear with music.
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Old 6th February 2012, 12:46 AM   #392
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Default Digiphobe

I faked it. Beethoven Ninth last movement has some sustained moments which read around 5 V. System is NAD 2600 Amp, about 150 wpc, driving Fostex RM 765 coax monitors in 4pi mode, and my homebrew TL subs. Room is 9.5 H 11 W 19.5 D. I can borrow a spl meter from my prosound buddy to back this up, or join the 21st century. I confess to being a Loudite.
I am very interested in preserving these Fostex monitors so getting louder means something else for mids/highs and I'm spoiled. So it goes.
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Old 6th February 2012, 12:56 AM   #393
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Originally Posted by phivates View Post
Beethoven Ninth last movement has some sustained moments which read around 5 V.
not sure I understand what you mean.
if you did the test the way Pano described and you got a lower voltage, it can only mean that you made a mistake somewhere.
if "digiphobe" means that a digital source wasn't involved, well, we found the mistake.
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Old 6th February 2012, 01:23 AM   #394
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Default the mistake

Yes we did
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Old 6th February 2012, 01:32 AM   #395
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Originally Posted by phivates View Post
Yes we did
um, pardon me?
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Old 6th February 2012, 01:38 AM   #396
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Originally Posted by mr_push_pull View Post
um, pardon me?
I think he's saying he used an analogue source
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Old 6th February 2012, 01:41 AM   #397
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how did he do the test then? used a signal generator set to... what value? or he monitored the peaks at output using a scope?
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Old 6th February 2012, 01:43 AM   #398
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Yes I did. Hence digiphobe.
I reasoned that a sustained chord with full orchestra and chorus might constitute an "analog" for the test proposed by this thread. Bad? Wrong?

Last edited by phivates; 6th February 2012 at 01:46 AM. Reason: rapid responses
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Old 6th February 2012, 01:46 AM   #399
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Originally Posted by mr_push_pull View Post
how did he do the test then? used a signal generator set to... what value? or he monitored the peaks at output using a scope?
I think he measured the amplifiers output when listening to Beethoven
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Old 6th February 2012, 02:02 AM   #400
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Originally Posted by 5th element View Post
I think he measured the amplifiers output when listening to Beethoven
just when I thought things couldn't possibly get any worse...

musical instruments have very complex spectra and are not steady signals but have complex envelopes too. DMM's give useful readings only when supplied perfect sines and as said before cheaper ones are frequency sensitive too.
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