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Ask Me Anything About Audio System Design
11-15-2010, 01:09 PM
#51
50 Watt CAFz'r
Thread Starter
Join Date: Nov 2010
Posts: 230
it's not like a ported, but will produce same result.
on what device did you hit that number is the questions many will wonder.
funny you say there is no software.....software is only for those who need it. i have never used a software, yet I have seem to have done rather well.
although it is a decent number (given a decent devise was used) it's not astronomical by all accounts. I am sure I could do that or better without a program (i never use any program anyways) in a standard ported box and knowledge in my head.
if you opnly knew how many of your "students" from mobile dynamics told me i was doing everything wrong and that i need a tapped horn or some sort of a bandpass or i need to use this program or that software............none of them designed or built a box that was any louder than a straight up ported box.
and to be 100% honest I even approached mobile dynamics students and teachers about this, everyone had alot of theory but no revolutionary results. they would say "this guy did this with this box" while I had done same but with a regular square box with a port.
the most useful thing someone form mobile dynamics told me is that SPL wasn't directional.
i know u know your stuff, but there is no magical box.
when working these these unorthodox boxes you have to consider efficiency when power is increased exponentially.
surely you can do an OK SPL number with 500-1000 watts, but what happens when you put 5,000 watts to it? I can tell you what happens if you dont already know.
on what device did you hit that number is the questions many will wonder.
funny you say there is no software.....software is only for those who need it. i have never used a software, yet I have seem to have done rather well.
although it is a decent number (given a decent devise was used) it's not astronomical by all accounts. I am sure I could do that or better without a program (i never use any program anyways) in a standard ported box and knowledge in my head.
if you opnly knew how many of your "students" from mobile dynamics told me i was doing everything wrong and that i need a tapped horn or some sort of a bandpass or i need to use this program or that software............none of them designed or built a box that was any louder than a straight up ported box.
and to be 100% honest I even approached mobile dynamics students and teachers about this, everyone had alot of theory but no revolutionary results. they would say "this guy did this with this box" while I had done same but with a regular square box with a port.
the most useful thing someone form mobile dynamics told me is that SPL wasn't directional.
i know u know your stuff, but there is no magical box.
when working these these unorthodox boxes you have to consider efficiency when power is increased exponentially.
surely you can do an OK SPL number with 500-1000 watts, but what happens when you put 5,000 watts to it? I can tell you what happens if you dont already know.
No one at Mobile ever mentioned Tapped Horns - Ever... it's nowhere in their text books nor was it in any power point nor was it in any general discussions - horns where but not Tapped Horns -...
So no student or large amount of students ever mentioned such a thing to you... I promise you that you couldn’t successfully build one if you tried, without my help or someone that possess the same knowledge and equipment as I do...
So please drop the crap! And start learning; others don’t need nor do they want to hear it from you!
11-15-2010, 01:16 PM
#52
50 Watt CAFz'r
Thread Starter
Join Date: Nov 2010
Posts: 230
yes, i am 100% un-educated. i fluked all my spl success.
but um, we arent talking about free field, i know what it is, that's why i just ignored it. i am sure it would produce an even better number in outter space.
my system probably wouldnt even be heard 100 feet away..............since it's not designed to be playing in a field, it is to produce a number in a car's cabin.
tell me about standing waves and how to deal with them.
but um, we arent talking about free field, i know what it is, that's why i just ignored it. i am sure it would produce an even better number in outter space.
my system probably wouldnt even be heard 100 feet away..............since it's not designed to be playing in a field, it is to produce a number in a car's cabin.
tell me about standing waves and how to deal with them.
My point is this - if a system is louder in a free field environment, it can be modified to be even louder in a near-field environment... Acoustic fact!
So start guessing around with a tapped horn system and get louder or don't and get your *** kicked by someone on this forum who does...
Perhaps me!
I will not answer your questions about standing waves, but stay tuned because I am sure someone else will ask...
11-15-2010, 01:19 PM
#53
50 Watt CAFz'r
Thread Starter
Join Date: Nov 2010
Posts: 230
I didn't read all the postings, so maybe someone posted this.
Anyways, I'm trying to decide on an amp for my system. It's just for pure amplification for a 100% SQ system. Should I spend a LOT of money in this area or can I just go with something middle of the road. Will I hear the difference?
Can you enlighten me in this area before I go out and drop a load of cash. I want to do the right thing.
Anyways, I'm trying to decide on an amp for my system. It's just for pure amplification for a 100% SQ system. Should I spend a LOT of money in this area or can I just go with something middle of the road. Will I hear the difference?
Can you enlighten me in this area before I go out and drop a load of cash. I want to do the right thing.Arc Audio
MTX Elite
TRU Technologies
The amp is very important in pure SQ systems - MTX has the best value for the dollar all the other will cost more, but will perform very similar...
11-15-2010, 01:32 PM
#54
50 Watt CAFz'r
Join Date: Apr 2009
Posts: 132
Hope all is well!
11-15-2010, 01:33 PM
#55
50 Watt CAFz'r
Thread Starter
Join Date: Nov 2010
Posts: 230
I have to agree with Yuli, you must understand that he is talking about a small car like the CRX, in which the box size and shape affects everything. I have also built a couple tapped horns back in days with the same goal and they were a fail, is is actually quite frustrating when you calculate wavelengths, resonant frequency, put that in a car and it ends up quieter.
I'm building a tapped horn inside a 88 E-150, let's see how it goes.
I'm building a tapped horn inside a 88 E-150, let's see how it goes.
I just recalled a system I saw with one 18 in a station wagon using a transmission line that hit 179dB at a dB drag in Owen Sound Ontario... Fast Forward show...
Tapped Horns are even more efficient then a transmission line...
Please go to Danley Sound Labs and look at the CAD's on a few of their horns - I am quite sure that you and others will realize that you have never seen one before - let alone built one...
And if you have made an attempt and if didn't work out, it was because your math was wrong - this is a proven patented design - it is not my opinion - it is an objective fact that tapped bass horns are the most efficient means for producing bass - period...
It's all about the math - not subjective, trunk rattling guess work...
Start with a more efficient system means that for every watt you but in that you will get more of it out - fact - plain and simple...
I will say no more...
11-15-2010, 01:41 PM
#57
You are playing in a field - a near field environment...
My point is this - if a system is louder in a free field environment, it can be modified to be even louder in a near-field environment... Acoustic fact!
So start guessing around with a tapped horn system and get louder or don't and get your *** kicked by someone on this forum who does...
Perhaps me!
I will not answer your questions about standing waves, but stay tuned because I am sure someone else will ask...
My point is this - if a system is louder in a free field environment, it can be modified to be even louder in a near-field environment... Acoustic fact!
So start guessing around with a tapped horn system and get louder or don't and get your *** kicked by someone on this forum who does...
Perhaps me!
I will not answer your questions about standing waves, but stay tuned because I am sure someone else will ask...
fact is, you arent the only one who knows how to build this stuff. another fact is that many have tried in a car and another fact is that results are same as a ported box/wall.
sure, tapped horn is "more sound", that doesnt mean it's more SPL
you need to get off this field/almost field none sense, no one really asked about that.
i know exaclty who u are and i heard about your "148 db" box. the only thing i don't know is what peice of measuring equipment you used to get the result 5 years ago?
and still, you never told us what happens in such box when you use 5,000 watts instead of 500 watts. will you answer or should someone else ask?
if I am wrong, why oh why hasnt the magical box of tapped horn exploded onto the SPL scene?
admit it, even though u might think u know SPL u really have no idea. and by spl i mean in a car's cabin. not in an open field or outter space.
Last edited by Father Yuli; 11-15-2010 at 01:43 PM.
11-15-2010, 01:43 PM
#58
Guest
Join Date: Aug 2010
Posts: 216
Hello
I just recalled a system I saw with one 18 in a station wagon using a transmission line that hit 179dB at a dB drag in Owen Sound Ontario... Fast Forward show...
Tapped Horns are even more efficient then a transmission line...
Please go to Danley Sound Labs and look at the CAD's on a few of their horns - I am quite sure that you and others will realize that you have never seen one before - let alone built one...
And if you have made an attempt and if didn't work out, it was because your math was wrong - this is a proven patented design - it is not my opinion - it is an objective fact that tapped bass horns are the most efficient means for producing bass - period...
It's all about the math - not subjective, trunk rattling guess work...
Start with a more efficient system means that for every watt you but in that you will get more of it out - fact - plain and simple...
I will say no more...
I just recalled a system I saw with one 18 in a station wagon using a transmission line that hit 179dB at a dB drag in Owen Sound Ontario... Fast Forward show...
Tapped Horns are even more efficient then a transmission line...
Please go to Danley Sound Labs and look at the CAD's on a few of their horns - I am quite sure that you and others will realize that you have never seen one before - let alone built one...
And if you have made an attempt and if didn't work out, it was because your math was wrong - this is a proven patented design - it is not my opinion - it is an objective fact that tapped bass horns are the most efficient means for producing bass - period...
It's all about the math - not subjective, trunk rattling guess work...
Start with a more efficient system means that for every watt you but in that you will get more of it out - fact - plain and simple...
I will say no more...
I built something like this:
Is that a tapped horn?
Don't get me wrong, Danley is a genius and I'm a big fan, but I think a car should not be considered free field + low frequency gain, yet a box inside a box and this might change the design of the box.
