Clean speaker configuration

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vinman753
Junior tube assistant
Posts: 84
(1/31/04 8:36 pm)
 Clean speaker configuration
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 I'm trying to learn a little more about speaker configurations and I thought I would pick your brains.
I understand that the higher the sensitivity, the more efficient the speaker. But all these formulas and whatnot are making me nuts about which pushes sound further and which gives more bottom which brings out the highs,etc.
Using an AB763 setup with a 50w o.p. (similar to a super reverb). Which do you think would give the most clean headroom for nice chords without distortion.
These examples are all Jensen speakers:
4 x 10 C10Q
4 x 12 C12N
2 x 15 C15N

Also, is it a myth that the Alnico speakers are more suited for Tweed distortion type sound and Ceramics are cleaner for blackface and silverfaces.
And lastly, would open or closed back cabinets affect the sound that much?
I have bought Weber's tape and book from here, but they're kind of limited IMO in explaining this side of amps in detail. I've spent time all over reading different posts here and FDP and Weber, but speakers seems to have the most difference of opinion since "which came first the chicken or the egg"
I appreciate any input.


 
6G6
Junior tube assistant
Posts: 67
(2/1/04 3:05 pm)
 Re: Clean speaker configuration
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 Ceramic speakers are cleaner and more efficient.
Some people prefer the Alnicos because of the earlier breakup.
Closed back cabs will give you more bottam as long as they aren't to tight.
I find that using a single speaker tends to concentrate the sound in one beam, from a single source.
On the other hand, if you have a larger total area, then each speaker is moving a smaller distance in order to move the same total amount of air. Having more than one speaker means the sound is coming from different sources, at different distances from the ear. The slight delay in sound from the farther speakers will make a somewhat less defined sound due to phase shift. It will be more noticable off to the side, less so straight in front of the speakers.
Then again it may be so subtle that you would never know. That part is just form my own obervations and wondering why.

In the end, you need to research untill you feel like you have found your answer or just can't take anymore research, whichever comes first. Then take your best guess.
Speakers is scientificly quantifyable as far as being able to look at an oscilloscope and see which one reproduces a sine wave the most faithfully.
The problem is that because of our individual tastes and perceptions, it ends up being subjective anyway.
I hope this helps some. I expect you will get more opinions here soon.
 
 
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