This thread, or a least the first post, is a great illustration of how poorly most people understand speakers. Realflow has good company on this one, the vast majority of the general population! 🙂
Speakers aren't light bulbs, and they aren't motorcars. They just don't work the same way and are not rated or specified in the same way. Maybe the forum needs a FAQ explaining this.
Speakers aren't light bulbs, and they aren't motorcars. They just don't work the same way and are not rated or specified in the same way. Maybe the forum needs a FAQ explaining this.
hi rearflow
i once hooked up an 18" speaker to a poor car radio.
i could not beleave the amount of bass it produced.
so yes it works.😀
i once hooked up an 18" speaker to a poor car radio.
i could not beleave the amount of bass it produced.
so yes it works.😀
Give it a try, you may be surprised. In fact a good pro speaker can make a lot of sound from the output of a portable transistor radio. Surprise your friends! 😀
Anything like an iPod touch has sufficient current drive on the output to drive speakers directly.
Given suitably sensitive speakers (>98dB@1w), the results are rather good - there's no intervening electronics, so the signal chain is about as pure as can be.
My friend drove these 16Ω theater speakers with a 3W rated car radio that could put out about 0.75W at 16Ω.
Of course the 84" wide RCA are 110dB/W with their dual 15" horn-loaded woofers.
They are now at home in a small community theater and are driven with a Leach amplifier that can drive about 50W~60W into 16Ω.
Of course the 84" wide RCA are 110dB/W with their dual 15" horn-loaded woofers.
They are now at home in a small community theater and are driven with a Leach amplifier that can drive about 50W~60W into 16Ω.
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There were three of them in a 2000 seat theater that closed.
They were being hauled off to the landfill.
Of the big three double 15 horns (Altec A4, JBL 4550, and the RCA MI-9462), the RCA sounds the best in the midrange (100hz~4Khz).
http://2.bp.blogspot.com/_NVQujPOPx2c/S83ABh2kKqI/AAAAAAAAOog/iuGyS-Cm11Y/s1600/rca+ubangi1.jpg
A tweeter was added to the ones in my photo.
They were being hauled off to the landfill.
Of the big three double 15 horns (Altec A4, JBL 4550, and the RCA MI-9462), the RCA sounds the best in the midrange (100hz~4Khz).
http://2.bp.blogspot.com/_NVQujPOPx2c/S83ABh2kKqI/AAAAAAAAOog/iuGyS-Cm11Y/s1600/rca+ubangi1.jpg
A tweeter was added to the ones in my photo.
A little 1watt guitar amp is suprisingly loud if you plug it into a 4x12" guitar cabinet. Its not going to start an earthquake but it'll definitly annoy family members in the vicinty, neighbours too if you're in an apartment.
A typical 4x12" guitar cabinet is around 105dB/W/1M, with (much) higher peaks in the 3Khz region.
Run for cover when driving that 1W amp into producing a 2W square-wave!
One Eminence 12, add 6dB for 4:
http://www.eminence.com/curves/curves.php?model=Legend_GB128&KeepThis=true&TB_iframe=true&height=420&width=580
109dB at 2.4Khz from one driver!
They do have some at 110.8dB at 2.4Khz too:
http://www.eminence.com/curves/curves.php?model=Tonkerlite_16&KeepThis=true&TB_iframe=true&height=420&width=580
Run for cover when driving that 1W amp into producing a 2W square-wave!
One Eminence 12, add 6dB for 4:
http://www.eminence.com/curves/curves.php?model=Legend_GB128&KeepThis=true&TB_iframe=true&height=420&width=580
109dB at 2.4Khz from one driver!
They do have some at 110.8dB at 2.4Khz too:
http://www.eminence.com/curves/curves.php?model=Tonkerlite_16&KeepThis=true&TB_iframe=true&height=420&width=580
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"no 1 watt is not extremely loud. "
There must be a language problem here, many of the speakers mentioned here are 100dB/W and higher, and you don't think that is loud?
That's loud in my book.
On popular music 85dB is moderately loud, 95dB is loud, 105dB is very loud, and 115dB is too D*mm loud. Fifteen minutes of 115dB can cause permanent hearing damage (according to OSHA).
There must be a language problem here, many of the speakers mentioned here are 100dB/W and higher, and you don't think that is loud?
That's loud in my book.
On popular music 85dB is moderately loud, 95dB is loud, 105dB is very loud, and 115dB is too D*mm loud. Fifteen minutes of 115dB can cause permanent hearing damage (according to OSHA).
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More likely melt your speakers. Or set them on fire. I don't know any speaker that is rated to handle 40 KW. Anyone have an example?
I mean multiple subwoofers or something
there aint one subwoofer rated 40,000 watts by itself
unless there's a 100,000 watt giant 6 foot subwoofer your body innerds would turn to soup instantly and you'd turn inside out
there aint one subwoofer rated 40,000 watts by itself
unless there's a 100,000 watt giant 6 foot subwoofer your body innerds would turn to soup instantly and you'd turn inside out
115 dB at 40 Hz won't cause hearing damage, and does not sound overly loud to me.
The OSHA permissible noise levels are in dBA, which rolls off below 1000 Hz.
While I certainly agree that sounds above 1000 Hz at 115 dBA sound loud, it would take 155 dB for a 30 Hz noise (about what astronauts experience in the cockpit when launching) to read 115 dBA.
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