Inductor coil inside Danley tapped horn

2100 · 3rd May 2008, 08:00 AM

Apologies that this isn't a DIY speaker per se, but just want to ask that there is this huge 14-ga iron core inductor that's the size of my hand that's in series to the driver.

The driver is prob a LAB12 (seems slightly modded though), pretty cool and low Le. But I suppose this iron core inductor is at least 5mH. I have a TH-112.

I know there is talk that driver inductance affects SQ of drivers, does this coil add on to it? Anyway can I bypass the coil, since I do not see any benefit to it (why would the TH need to have a 1st order LP filter at say 200Hz). Or am I missing anything?

Thanks.

PS. The polyurea coating is really cool. You can throw a small rock at it and not chip anything.

MaVo · 3rd May 2008, 09:05 AM

Dont bypass it. It is essential to the design. It modifies the frequency response. This was discussed in the tapped horn thread.

2100 · 3rd May 2008, 09:13 AM

Ahh ok. Thanks.

That thread is too long!

cowanaudio · 4th May 2008, 10:29 AM

G'day 2100

Any photos of your little sub you'd like to share? It's always fascinating checking out a masters work.

Cheers

William Cowan

3rd May 2008, 08:00 AM	#1
2100 diyAudio Member Join Date: Jan 2007	Inductor coil inside Danley tapped horn Apologies that this isn't a DIY speaker per se, but just want to ask that there is this huge 14-ga iron core inductor that's the size of my hand that's in series to the driver. The driver is prob a LAB12 (seems slightly modded though), pretty cool and low Le. But I suppose this iron core inductor is at least 5mH. I have a TH-112. I know there is talk that driver inductance affects SQ of drivers, does this coil add on to it? Anyway can I bypass the coil, since I do not see any benefit to it (why would the TH need to have a 1st order LP filter at say 200Hz). Or am I missing anything? Thanks. PS. The polyurea coating is really cool. You can throw a small rock at it and not chip anything.

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3rd May 2008, 09:05 AM	#2
MaVo diyAudio Member Join Date: Jan 2006 Location: Herne	Dont bypass it. It is essential to the design. It modifies the frequency response. This was discussed in the tapped horn thread.

3rd May 2008, 09:13 AM	#3
2100 diyAudio Member Join Date: Jan 2007	Ahh ok. Thanks. That thread is too long!

4th May 2008, 10:29 AM	#4
cowanaudio diyAudio Member Join Date: Jul 2004 Location: Canberra, Australia	G'day 2100 Any photos of your little sub you'd like to share? It's always fascinating checking out a masters work. Cheers William Cowan

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