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Old 16th December 2012, 12:12 AM   #11
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Personally, I wouldn't take them below about 250/300Hz at the bottom, (unless you listen at very low levels), they are quite fragile, but worse, don't actually sound that nice at the low end. Non horn loaded, I'd run them up to about 4-5K at the top.
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Old 16th December 2012, 12:46 AM   #12
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yeah that was my plan. 300hz and 5khz...
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Old 16th December 2012, 12:47 AM   #13
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Originally Posted by murphythecat8 View Post
okay, and what is their limit in your opinion? where to put the crossover?

I will be doing the pro-38 enclosure for the audax which is a irregular enclosure...
Depends on a lot of factors, what woofer and treble. Using 4th order electronic crossover with no passive contour they sound best 400 to 2k (actually going into breakup at around 2.3K if I remember correctly) but you can stretch that quite a bit on top because they're good) . I've used them with a first order passive crossover over at 4k to a ASG1 99 db sensitive ribbon and it was a lot of fun. Another good match (much less $) is the little Eminence APT80 tweeter.
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Old 16th December 2012, 01:29 AM   #14
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ill be using the audax pr120 for the supertweeter and the beyma 12br70 for the bass.

I plan on first order at 300hz, I really want the lower possible because im going active with my beyma and want the tone to match so dont want the beyma to go in the midrange ideally.
anyways, will report soon!
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Old 17th February 2015, 10:54 PM   #15
Kwikas is offline Kwikas  Australia
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Originally Posted by POOH View Post
The driver is good as a direct radiator yet even better in a large mid horn. It's upper range in a horn is 1.5k so it makes it easy to mate with a good 1" compression driver. The horn loading gives it more headroom then direct radiator but the pr170mo still lacks the dynamics I get with some other horn loaded cones so I do not use them except in rear ambiance channels.
Is there a mid range horn available off the shelf or does one have to design it (Hornresp)?

......and yes I know the thread is 2 years old but I have a couple of these drivers and I want to horn mount them.

Last edited by Kwikas; 17th February 2015 at 10:55 PM. Reason: addition
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Old 18th February 2015, 02:29 AM   #16
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Heard them on OB years ago with ported Altec VOT woofers and Klipsch horn tweeters in a DIY setup. They were excellent!
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Old 18th February 2015, 10:34 AM   #17
Kwikas is offline Kwikas  Australia
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They certainly are a nice driver Godzilla. I just can't seem to find any horn designs for them.

I have two mid range horn guides out of the JBL PRX535 which took JBL 195H drivers (Eminence LA6-CBMR) and I was hoping my Audax PR170mo's (same as JBL 165H) would fit them but the Audax's are slightly too large...
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