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tiny amplifier.. big speaker?
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Old 21st December 2012, 03:02 PM   #21
Pano is online now Pano  United States
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tiny amplifier.. big speaker?
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.
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Old 22nd December 2012, 08:04 AM   #22
epa is offline epa  Netherlands
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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.
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Old 22nd December 2012, 09:54 PM   #23
realflow100 is offline realflow100  United States
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I'll try that sometime LOL
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Old 22nd December 2012, 10:00 PM   #24
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tiny amplifier.. big speaker?
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!
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Old 22nd December 2012, 10:24 PM   #25
chris661 is offline chris661  United Kingdom
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Quote:
Originally Posted by Pano View Post
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.
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Old 22nd December 2012, 10:35 PM   #26
Cal Weldon is offline Cal Weldon  Canada
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tiny amplifier.. big speaker?
Quote:
Originally Posted by Pano View Post
In fact a good pro speaker can make a lot of sound from the output of a portable transistor radio.
That how it started for me all those years ago.
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Old 23rd December 2012, 01:31 AM   #27
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My friend drove these 16Ω theater speakers with a 3W rated car radio that could put out about 0.75W at 16Ω.

Click the image to open in full size.

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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Old 23rd December 2012, 01:50 AM   #28
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tiny amplifier.. big speaker?
Nice!
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Old 23rd December 2012, 03:06 AM   #29
Cal Weldon is offline Cal Weldon  Canada
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tiny amplifier.. big speaker?
Ubangi!
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Old 23rd December 2012, 12:15 PM   #30
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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/_NVQujPOPx2...ca+ubangi1.jpg

A tweeter was added to the ones in my photo.
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