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Old 27th June 2012, 12:57 PM   #91
jimbro is offline jimbro  United States
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Mr. zman01 sir - what fr driver are you planning too use and what crossover point(s)?
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Old 27th June 2012, 05:15 PM   #92
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We did get our version of the project Zia is working done.

Click the image to open in full size.

Unlike the longer line in the MTM we did not nail the stuffing on these short ones 1st time out. I also have more XO work to do, currently running then REL style with no HP on the Mar-Kel. Things were better with the 2nd order active at 100 Hz despite the bit of veil the XO was adding. Need to whip up some PLLXOs (and get the pre fixed)

dave

PS: Chris is finishing the Mar-Ken12.2pT to match these WoofTs. The drivers come off the break-in bench tommorrow night so we should have that working Sat (Chris will likely get 1st crack at them).
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Old 1st July 2012, 03:34 AM   #93
gassit is offline gassit  Australia
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Default EL166 IMpedance

Earth to Planet 10: I notice you use the EL166 in several of your speakers.

I'm going to have a go at knocking up a Zobel to flatten the EL166's rising impedance at higher frequencies (up to 4kHz). Did you ever manage to measure the impedance up to about 4kHZ when designing your speakers?

Thanks for any assistance you might be able to offer.

Over and out...
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Old 1st July 2012, 03:46 AM   #94
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I've not measured them in the boxes yet.

4 units in free air.

dave
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File Type: gif EL166-imp.gif (53.6 KB, 342 views)
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Old 1st July 2012, 04:51 AM   #95
gassit is offline gassit  Australia
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Hello Planet 10:

Thank you for your unbelievably fast response!

Would there be much difference between the measured impedance free air and in an 80 litre box? In other words would designing a Zobel based upon the free air response be close enough, good enough?
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Old 1st July 2012, 05:45 AM   #96
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Only in the LF. A zobel is interested in the HF

dave
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Old 7th December 2012, 02:59 AM   #97
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Latest.

MTM plan

http://p10hifi.net/FAL/downloads/EL1...MTM-131011.pdf

monolith with push-push woofers

http://p10hifi.net/FAL/downloads/Dua...dTL-150112.pdf

dave
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Old 7th December 2012, 08:18 PM   #98
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Good stuff, those beasts sounded excellent when I heard them. Have there been any major changes the box dimensions?

KM
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Old 7th December 2012, 08:33 PM   #99
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No changes. As we work with different woofers things change.

Somehints to the latest efforts A thread for Tysen and variations on FAST

dave
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Old 20th January 2013, 09:00 PM   #100
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Someone asked me about the XO for the MTM. I posted it a long time ago here. A thread for Tysen and variations on FAST

I should have posred it here too.

Click the image to open in full size.

This XO worked very well, and we are using/trying variations of it for current FAST projects that are suitable for passive XO. One of the beauties of the series XO is that it locks the LP & HP together.

dave
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