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Post by jbgtr on Aug 27, 2008 9:21:54 GMT -7
I just got my Z best cab about a week ago and am thrilled with it. From what I have read, I am amongst many many satisfied users. I have been reading that many other users have swapped out one or both of the speakers originally used. The Vintage 30 or the H30. I was reading about Thiele-Smalls parameters the other day and from what I understand, the size of the port in the cabinet is based on the size of the cabinet and the volume displaced by the drivers(speakers) and any other material inside the cabinet. Given that most speakers made by Celestion, Eminence, Fane etc have different dimensions, would using a substitute speaker effect the efficiency of the port in the cabinet? Or are the differences in the values small enough that they are basically inconsequential?
Thanks again!
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Post by benttop (Steve) on Aug 27, 2008 9:32:01 GMT -7
I don't think there's a very good way to tell. If you change a speaker, it's to affect the tone. How can you parse the effect of the speaker from the effect it has on the cabinet? You put one in, you try it, you either like it or not. Will it matter that you didn't like it because it affected the port, or because the new speaker has less (or more) bottom?
It is an interesting question. In practice I'm not certain it will matter one way or the other, because your ears will be the final judge no matter what.
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Post by jbgtr on Aug 27, 2008 9:45:29 GMT -7
Absolutely Steve. Sorry, let me refine my question. Obviously, when using a different speaker, we are going to get a different overall tone. And in practice, I do realize my question is completely inane. I was just curious from a theoretical perspective how using different speakers would affect the overall performance of the Dr.'s design. Is the port and bass reflex of the cabinet maximized by using the stock speakers? Also, to be more specific, is the port intended for one of the speakers more than the other? Is one more essential in the design?
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Post by benttop (Steve) on Aug 27, 2008 10:06:36 GMT -7
Looks like you need an answer from the Doc on those questions.
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Post by Jan on Aug 27, 2008 12:23:20 GMT -7
In my experience, the port is more for the box parameters than the speaker. Remember that most words out there about such things are talking about reproducing recorded music, not producing original source signals. So in guitar cabinet parlance, the port is roughly tuned to the box to flatten the output across the speaker(s)' spectrum. Certainly everything in the system effects the output but without sophisticated equipment and lab technique you are not going to notice any small and many large changes. If you are an audiophile trying to tune a stereo to a room, you will either love or hate the subtle differences. But if you are a player on a stage or fan in the crowd, all you are going to notice is that your sound has a rich, full and flat frequency response compared to the average shredder. And for experimenting, as you put it, the differences in the values are small enough that they are basically inconsequential when you crank it up.
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janlf
Full Member
Moment's Notice
Posts: 173
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Post by janlf on Aug 27, 2008 13:19:17 GMT -7
Hi. Stop, stop, stop, now you give me GAS ;D I really want to get a convertible 2X10" instead of my 2X12" get a Z-Best as well At least down the road somewhere. Greetings, Jan
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Post by Jan on Aug 27, 2008 14:45:42 GMT -7
Salutations, Jan. GAS is not all bad. Z-Best GAS is a good thing™. I am a fan of well constructed, ported cabinets and the Z-Best comes by its name honestly. I have one myself. You want more Z-Best GAS? Go to the sounds section and listen to T R☼CK ♫'s Z-Best full of Greenbacks driven by a Galaxie.
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