Zaph XG18 design questions

ruerose · 4th May 2006, 02:57 AM

I was pumping the numbers for zaph's XG18 MTM (http://www.zaphaudio.com/audio-speaker16.html) into WinISDPro to double check some curves and see what effects volume changes would make.

I have a concern mabye one of you folks could answer.

1. The excursion of these driver's in the standard vented 2 cu ft enclosure listed show it will only handle about 35W of system power before reaching overexcursion in the 50hz range. Seems like a very small amount of power considering the driver's lower efficiency.

I had to input driver specs manually, I guess my question is in WinISDPro the Xmax I entered was 5mm as listed on Solen's website. Should I have entered 10mm for peak-peak instead?
How does WinISD want to see it?

A last curious question about this system: Can this system play loud? Not rock-concert loud, but louder than my CSS FR125's Singles? They bottom out before my ears do, and it's not really enough to fill the room and down the hall. (12'x20')

ruerose · 4th May 2006, 04:10 AM

I added a 6.8 extremis to the program using the same methodology and it looks like performance won't be an issue, SPL and Extension at "safe" excursion levels are really close. I can push the Extremis further, but I want the mid-range performance of the pair of XG18's. The XG is cheaper too.

sreten · 4th May 2006, 09:55 AM

Quote:

Originally posted by ruerose

I had to input driver specs manually, I guess my question is in WinISDPro
the Xmax I entered was 5mm as listed on Solen's website.
Should I have entered 10mm for peak-peak instead?

Yes,

/sreten.

4th May 2006, 02:57 AM	#1
ruerose diyAudio Member Join Date: Aug 2005	Zaph XG18 design questions I was pumping the numbers for zaph's XG18 MTM (http://www.zaphaudio.com/audio-speaker16.html) into WinISDPro to double check some curves and see what effects volume changes would make. I have a concern mabye one of you folks could answer. 1. The excursion of these driver's in the standard vented 2 cu ft enclosure listed show it will only handle about 35W of system power before reaching overexcursion in the 50hz range. Seems like a very small amount of power considering the driver's lower efficiency. I had to input driver specs manually, I guess my question is in WinISDPro the Xmax I entered was 5mm as listed on Solen's website. Should I have entered 10mm for peak-peak instead? How does WinISD want to see it? A last curious question about this system: Can this system play loud? Not rock-concert loud, but louder than my CSS FR125's Singles? They bottom out before my ears do, and it's not really enough to fill the room and down the hall. (12'x20')

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4th May 2006, 04:10 AM	#2
ruerose diyAudio Member Join Date: Aug 2005	I added a 6.8 extremis to the program using the same methodology and it looks like performance won't be an issue, SPL and Extension at "safe" excursion levels are really close. I can push the Extremis further, but I want the mid-range performance of the pair of XG18's. The XG is cheaper too.

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