Tapped Horn For Car - Page 12

mwmkravchenko · 10th July 2009, 01:11 PM

Hi JLH It's hard to argue when you make sense.

You are correct in a way. Some of the Gents are car sound buffs. $400 on drivers that can out perform two 15's is not all that bad when you roll the dice and think it through that way.

But I have to agree on the two trios. They are beautiful drivers and I have a couple in house.

If there was enough demand maybe there could be a group buy on the SDX7's. That box will really be a smasher 0f concepts and the kids who drive up beside me. They allready don't know what hit them with the baby box.

Mark

P.S. I think I'm going to try some other drivers on the baby box and see how bad the performance is.

DarpMalone · 10th July 2009, 04:32 PM

Price is the only issue for me. Even at group buy prices, the cost of 4 SDX7`s will be more than I can justify.

So I vote TRIO`s

Henkjan · 10th July 2009, 05:03 PM

I also vote for the Trio8

Binary110 · 10th July 2009, 08:58 PM

Trio 8 is my vote for now, but i still wanna see 4x SDX7 in the future.

mwmkravchenko · 11th July 2009, 03:20 AM

OK gents I have it from on high that there is a possible discount on the SDX7.

It can be purchased for less. It's in the vendors thread. That's where the business end of things belongs. Let's keep this thread to the Q & A side of things. SO check out:

http://www.diyaudio.com/forums/showt...44#post1877444

So far the trio 8 is coming in in about 2 to 3 weeks. The 4 pc SDX7 is going to be next. Sorry I did more of the design work before the computer went boom and had it on paper.

The trio 8 is going to come about in a number of forms. Home and auto. So I will not be keeping it a big secret.

Mark

mwmkravchenko · 11th July 2009, 05:31 PM

The trio 8 can be had at a better price as well. I just have to figure out the actual cost and I will post it in the Vendors forum.

I hope this helps a bit.

Mark

Mikey p · 12th July 2009, 11:26 PM

Hi Mark,

I'm looking forward to seeing what the box size will be for the TRIO 8 and how it performs.

mwmkravchenko · 13th July 2009, 04:28 AM

OK gents here is the biginning of the TRIO8 True Tapped horn. It is not that small. It is actually 5.5 cubic feet or 156 liters. But it is quite efficient. As a home wall mount it is 94db/watt. In a car you get a nice boost.

Just as a teaser I modeled a twin SDX7 to go down to 20hz. Not a true tapped horn just a nasty littel impedance transformer like the unhorn. About 57 litres. This I have to try.

So here are the pics:

Raw driver measurement

1 watt SPL

Max SPL

Simulated impedance.

Mark

P.S.
Just as a teaser I modeled a twin SDX7 to go down to 20hz. Not a true tapped horn just a nasty little impedance transformer like the Unhorn. About 57 liters. This I have to try.

zobsky · 13th July 2009, 06:41 PM

You run out of excursion with 1 watt at 40 Hz !! Can anyone explain what this means in real life? I get similar results in a lot of my horn resp sims. Does that mean a high pass above this point (40Hz, in your case) is called for?

Thanks

brsanko · 13th July 2009, 08:28 PM

I like this design better

10th July 2009, 01:11 PM	#111
mwmkravchenko diyAudio Member Join Date: Jan 2002 Location: Perth Canada	The voice of reason Hi JLH It's hard to argue when you make sense. You are correct in a way. Some of the Gents are car sound buffs. $400 on drivers that can out perform two 15's is not all that bad when you roll the dice and think it through that way. But I have to agree on the two trios. They are beautiful drivers and I have a couple in house. If there was enough demand maybe there could be a group buy on the SDX7's. That box will really be a smasher 0f concepts and the kids who drive up beside me. They allready don't know what hit them with the baby box. Mark P.S. I think I'm going to try some other drivers on the baby box and see how bad the performance is. __________________ Mark

11th July 2009, 03:20 AM	#115
mwmkravchenko diyAudio Member Join Date: Jan 2002 Location: Perth Canada	Cost is such a nasty word lets call it an investment. OK gents I have it from on high that there is a possible discount on the SDX7. It can be purchased for less. It's in the vendors thread. That's where the business end of things belongs. Let's keep this thread to the Q & A side of things. SO check out: http://www.diyaudio.com/forums/showt...44#post1877444 So far the trio 8 is coming in in about 2 to 3 weeks. The 4 pc SDX7 is going to be next. Sorry I did more of the design work before the computer went boom and had it on paper. The trio 8 is going to come about in a number of forms. Home and auto. So I will not be keeping it a big secret. Mark __________________ Mark

11th July 2009, 05:31 PM	#116
mwmkravchenko diyAudio Member Join Date: Jan 2002 Location: Perth Canada	As you guys probably guessed I made a deal with CSS The trio 8 can be had at a better price as well. I just have to figure out the actual cost and I will post it in the Vendors forum. I hope this helps a bit. Mark __________________ Mark

13th July 2009, 04:28 AM	#118
mwmkravchenko diyAudio Member Join Date: Jan 2002 Location: Perth Canada	TRIO8 Beginning OK gents here is the biginning of the TRIO8 True Tapped horn. It is not that small. It is actually 5.5 cubic feet or 156 liters. But it is quite efficient. As a home wall mount it is 94db/watt. In a car you get a nice boost. Just as a teaser I modeled a twin SDX7 to go down to 20hz. Not a true tapped horn just a nasty littel impedance transformer like the unhorn. About 57 litres. This I have to try. So here are the pics: Raw driver measurement 1 watt SPL Max SPL Simulated impedance. Mark P.S. Just as a teaser I modeled a twin SDX7 to go down to 20hz. Not a true tapped horn just a nasty little impedance transformer like the Unhorn. About 57 liters. This I have to try. __________________ Mark

13th July 2009, 06:41 PM	#119
zobsky diyAudio Member Join Date: Mar 2002 Location: Dallas, Tx, USA	You run out of excursion with 1 watt at 40 Hz !! Can anyone explain what this means in real life? I get similar results in a lot of my horn resp sims. Does that mean a high pass above this point (40Hz, in your case) is called for? Thanks __________________ "Any fool can know. The point is to understand" - Albert Einstein


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10th July 2009, 04:32 PM	#112
DarpMalone diyAudio Member Join Date: Sep 2008	Price is the only issue for me. Even at group buy prices, the cost of 4 SDX7`s will be more than I can justify. So I vote TRIO`s

10th July 2009, 05:03 PM	#113
Henkjan diyAudio Member Join Date: Jan 2006 Location: Berkel en Rodenrijs	I also vote for the Trio8

10th July 2009, 08:58 PM	#114
Binary110 diyAudio Member Join Date: Jun 2009	Trio 8 is my vote for now, but i still wanna see 4x SDX7 in the future.

12th July 2009, 11:26 PM	#117
Mikey p diyAudio Member Join Date: Feb 2004 Location: Sask. Canada	Hi Mark, I'm looking forward to seeing what the box size will be for the TRIO 8 and how it performs.

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