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Old 3rd February 2006, 07:44 AM   #1
msharpe is offline msharpe  United States
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Default How do I select an amplifier?

I think I've finally settled on the speakers I want to use in my project. 2X Dayton Classis 15in. Subs - 100W RMS 150 W max 8ohms. 4X Goldwood 5in. Mids 40W RMS 55Wmax 8ohms. 4X Dayton 3/4in dome tweeters 15W RMS 30W max 6ohms. So firstly, I don't really know what I'm doing. The first quetion I have would be how do I choose what power rating I need for the amps. Does it matter that the tweeters are 6 ohms rather than 8? I still have to figure out how big to make the boxes too, so I guess I'll have a few more questions later
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Old 3rd February 2006, 08:39 AM   #2
lineup is offline lineup  Sweden
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Will you put all those into same box?

Will it be 2 loudspeakers + subwoofer system?

How many amplifiers you need?
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Old 3rd February 2006, 02:29 PM   #3
msharpe is offline msharpe  United States
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I planned to but the speakers in two boxes, with one sub two mids and two tweeters per box.
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Old 3rd February 2006, 03:25 PM   #4
Limhes is offline Limhes  Orkney Islands
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I also often wonder about how power ratings should be kept between amplifier and speakers. A friend once told me an amplifier should at least be capable of handling all back-EMF from the speakers, which can get quite large.

So, amplifier power at least how many times larger than maximum total speaker power ratings?
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Old 3rd February 2006, 05:33 PM   #5
ilimzn is offline ilimzn  Croatia
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Quote:
Originally posted by msharpe
...two tweeters per box.
Hehe I guess you really don't know what you are doing - how do you intend to integrate the two tweeters in one box?
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Old 3rd February 2006, 09:30 PM   #6
msharpe is offline msharpe  United States
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Well in that case, I guess it's going to be one tweeter per box then
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Old 4th February 2006, 05:16 AM   #7
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How far will you sit from the speakers?
How big is the room?
How loud will you play them?
What type of music?
What is the loudspeaker's rated SPL/W/M?
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Old 4th February 2006, 01:26 PM   #8
adason is offline adason  United States
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Quote:
How do I select an amplifier?
you borrow as many amplifiers as you can, you hook them up, you listen, you compare, you listen again, compare again, and again, till you end up with the amp you like best in your system
good luck!
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