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Old 23rd October 2005, 06:38 PM   #1
xyrium is offline xyrium  United States
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Default Can someone confirm this xover layout?

This is for Zaph's L15/27TBFC project. I've attached links to both his schematic, and my finalized xover. I tested it by running a frequency generator app on my laptop, and took the outputs to a receiver, and then an a/d/s woofer I have lying around. Although I can certainly hear that each section is performing eith a high or low end rolloff, I'm not sure it's doing it with the slope it was designed for, as I can still hear 200Hz (though extremely low) on the high pass section, and I can hear 6kHz on the low pass. I think John had them set up for about 18dB rolloff, so I'll get an SPL meter on it later.

I figured you'd rather me link to your site than copy and paste without permission John.

His schematic:
http://zaphaudio.com/audio-speaker12-xover.gif

My xover:
http://paulhanley.com/crossover_cnfm.jpg

If anyone can give this a quick review, I would truly appreciate it. Thank you!

Paul
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Old 23rd October 2005, 07:22 PM   #2
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Hi Paul,
Your layout seems ok....
Even with 18dB filters, some high or low frequencies will pass
through the LP and HP sections.
The value of your caps are right, but are you sure that your cools has the right value, and that you didn't switch them around by mistake
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Old 23rd October 2005, 07:45 PM   #3
xyrium is offline xyrium  United States
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Hello Jan,

Thanks for giving it a review, I needed the additional confirmation!

I also confirmed that the coils are indeed the correct value. So, this means, into the cabinets they go, and the repainted baffles may go on tonight! I used PE premade cabs, but sanded the half-glossy finish off of the front and applied a flat black finish instead. I also cut out the center brace to remove any air restrictions/reflections in the cabinet. Very exciting!

Regards,
Paul
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Old 24th October 2005, 03:22 AM   #4
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Please take a picture of your new speakers and post it here
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Old 24th October 2005, 03:43 AM   #5
xyrium is offline xyrium  United States
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I most certainly will! Thanks again!

Regards,
Paul
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