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  #1  
Old 09-13-2011, 07:30 PM
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Default Design for "marcotheclepto"

SA 8 Tapered Transmission line



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Old 09-13-2011, 08:09 PM
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How did you design this? Not to come off wrong, but it starts out with a huge line area - the SA8s are strong little drivers and that will normally result in a peaky response similar to an oversized ported enclosure. Not to mention it has a relatively shallow taper - not doing much for taming the response in that regard. The SA-8s generally arent fit for a tapered line IMO until you use a few of them.

Ive modeled the SA-8s and in order to get a response that doesnt have the large peak, you would have to mount the sub inverted. Theyre hard drivers to design for.
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Last edited by surreal; 09-13-2011 at 08:15 PM.
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Old 09-13-2011, 08:13 PM
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Quote:
Originally Posted by surreal View Post
How did you design this? Not to come off wrong, but it starts out with a huge line area - the SA8s are strong little drivers and that will result normally result in a peaky response similar to an oversized ported enclosure.

Ive modeled the SA-8s and in order to get a response that doesnt have the large peak, you would have to mount the sub inverted. Theyre hard drivers to design for.
thats where the taper comes into play at ... this enclosure was modeled to roll off very smoothly since he is using it in a room
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Old 09-13-2011, 08:18 PM
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Well with the large line its only going to give him a peak around 'tuning' and lower power handling.. Isnt going to affect the roll off amount any more or less than the normal ~24db/octave.
Edit - Especially given the gain of a room. That peak is going to lie somewhere in a point of high gain already.
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Old 09-13-2011, 08:37 PM
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here is the enclosure response i modeled actual output with be factored on box placement in the room... i also had a little input from the guys at sundown


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Old 09-13-2011, 08:47 PM
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The line looks long enough and with enough area to be loaded pretty well down..
What are your S1-S2 and PAR values if you dont mind me asking. Should be modeled either as a normal ND horn or an OD if you wish to account for a driver mounted down-line.
I dont want to post anything that could look bad here really on either part - PM me if youd like.
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