Hi friends.. I have designed a new bandpass enclosure..I dunno what to name it but its a mix of the fundamentals of bandpass and horn loaded woofer enclosure.. its not a pure form of either of them..But it is an amazing performer.. a transient response as good as a ported enclosure and plays loud volumes because of the horn fundamentals.. also there is a natural cut in high frequencies because of the bandpass fundamentals.. hope it is useful to u all..heres a layout.. the dimensions can be changed according to the specs of each individual woofer.. the calculations should be done according to the 4th order bandpass calculator.
here's the layout sketch,,
lol.. i dunno how to put up a pic here.. please help me..
Replies (32)
asplundher on 10/20/2004 07:49:48
Sorry, theres no pics here at least for now.
Have you tried it in a car yet?
Victor on 10/20/2004 10:12:08
oh yes.. and the results are amazing..
i really wish to share this design with u guys.. i did see a pic by someone.. i dunno remember but it was in the topic on inverted sub.. check it out. theres is a pic of inverted subs put on by someone.. i wanna know how he did it so that i can put on the design..
coments??
Victor on 10/20/2004 10:14:49
ok.. the pic is put on by Relax_The_Mind in the topic " subs outside the box" by jfin..
please help me put on the design
Victor
Relax_The_Mind on 10/20/2004 11:26:38
you cant upload pics to here you have to link them froma hosted site.
you can email it to me and i can host it for you on my server
vicflo@gmail.com
Victor on 10/20/2004 11:30:17
thanks dude.. i have mailed it to you please post it up asap...
thanks again..
Victor....
Relax_The_Mind on 10/20/2004 12:39:22
Here it is
Victors Pic
courtesy of Vicflo
Relax_The_Mind on 10/20/2004 12:42:35
thats kind of like having a sealed box in a tiny trunk. hehe
I wrote up plans to make a box from teh internals of a Bose™ bass module. I opened one up and saw that all that bass came from two small cheap paper cone 5¼" speakers in an innovative bass reflex design.
vicflo
admin on 10/20/2004 13:02:39
For everyones info, Only gold members can use HTML in posts so even if regular users try to link an image it will fail.
alanjlamore on 10/20/2004 13:42:43
Makes sence that we can't upload pictures, it could get pretty offensive letting everyone in internet land with an email address post pictures here.
Victor, that enclosure looks pretty interesting! Do you mind sharing what sub you used?
I'm currently still saving up money (and time) to build my own ported box for an Infinity kappa perfect 10" sub. I might decide to try this type of box instead (if you don't mind of course).
From the diagram it looks like a sub in a sealed box, inside a ported box?
If so, would the sealed box still use the specifications for a regular sealed box?
I'll read up more on bandpass and horn loaded enclosures too...
Faded on 10/20/2004 13:48:21
thats almost like a FoldedHorn enclosure those are supposed to be very good in picking up low bass
Victor on 10/20/2004 13:51:02
yeah vicflo thats what it seems like at the first look.. but believe me the results are stunning....
well alanjlamore.. u can surely use the desing if you like it.. i have sold 17 of those boxes in India..
no the calculations of the inner sealed box shall not be like a regular sealed box.. the volume calulations of the internal as well as the external volumes should be according to 4th order bandpass enclosure.. but the same bandpass with a different design shall play very different from this on.. if u study the design in detail its much like a horn loaded woofer where there is a rear chamber ,, a compression chamber and a expanding port length which amplifies the sound acoustically..
but it is a bandpass subwoofer in its basics cause a woofer from a sealed enclosure fires into another ported chamber.. so its pretty confusing to give it a proper name..
but trust me it is an extraordinay performer especially in the lower frequency range.. and unlike other badpass it has a good transient response too..
according to me u can definitely give this design a thought for ur new woofer..
Victor on 10/20/2004 13:59:17
yes one more thing i forgot to mention the ratio of the spaces in the front and the sides should be 4(front):3(both sides):2(port side).. keep in mind these ratios, while the volumes can differ these ratios should remain constant if you do not want to mess up with the design,, if the specs do not allow you to abide by these ratios then you can compensate the volume in height but not in the plan dimensions..
Best luck..
I feel this is going to be one of those successful designs of mine.. and you guys out there please also tell me if I plan to patent this design how can i do it and how much will i have to spend for this..
as of now.. its completely free and without any legalities so u guys can freely use it upto ur hearts content..
one more thing for you goldies out there..
I promise to donate this site from the royalty i receive if i am successful in patenting this design..
thanks
Victor...
Faded on 10/20/2004 14:01:41
http://www.cerwinvega.com/PRODUCTS/professional/vegabass/images/foldedhorn.gif
Victor on 10/20/2004 14:07:27
hey faded.. thats a good design.. i did try to copy that one.. but i was unsuccessful because of the space calculations and the extreme angles in the design.. if any of you could make that one from cerwin vega it is a pretty loud enclosure..
also i forgot to tell u one thing .. do not try and make an enclosure for 15" or 18" woofers cause then the box would become too huge and you will kill the punch.. i tried making one with 15" but the lower frequencies were so over powering that it sounded toooooo booming and no punch..
yes if you have ample space and like boomy bass then the choice is all yours..
alanjlamore on 10/20/2004 14:12:37
Here's a link to the US patent and trademark office:
http://www.uspto.gov/web/patents/howtopat.htm
You did say you sold these in India, right? Are you looking to get a US patent? I don't know anything about other country's patents, but I looked into getting one for an idea I had and I think the actual patent was about $400ish (american $) plus the lawyers' fees.
It ended up being more than I could afford at the time...
asplundher on 10/20/2004 14:25:56
Would you say it would be a good design for eights in saving space with still good bass?
Victor on 10/20/2004 14:31:12
anything from 8" to 12" wud do.. io wud say 10 would be a good option for a balanced tone.. if you go for 8" you cud get a bit tighter bass and if for 12" it would give a boomier base.. (not much but u can make out the difference easily)
8" wud be good for classical performances..
if you listen to a lot of rap,, hip hop, trance rock etc.. go for the 10"s or the 12"s
Victor on 10/20/2004 14:35:26
HEY COULD YOU GUYS PLEASE THINK OF A NAME FOR THIS DESIGN.
alanjlamore on 10/20/2004 14:39:44
The Victor-horn-pass enclosure...
The Victor-band-horn enclosure...
The Horn-pass enclosure...
The Band-horn enclosure...
Or any variation with your last name maybe
Victor on 10/20/2004 15:02:08
I keep on forgetting things.. MATERIALS TO BE USED..
3/4" Medium density fibre board or thicker ( if you like it heavy.. hehe)
Rubber adhesive to fill in all the air gaps at the joints.
Do not nail the wood.. cause then in future it wud be tough to dis-assemble the box if you need to upgrade the woofer.
Use 1.25" screws.. Pre-drill the holes.
All the inner walls should be lined with 1/2" sponge sheet( or any other sound absorbant) to cut out noise and unwanted high frequencies efficiently.
line the outer surface of the box with the material of your choice.. taking care that there is NO kind of obstruction to the ports..
Smoothen the edges of the ports to avoid port noise.
port width , depth and length ..
the centre port should be one and a half times wider the other two ports, cause this port handles the extra air that the other ports reflect or discard.. the other two ports should not be less than 1" for 8"... 1.5" for 10" and... 2" for 12" sub-woofers..
the port depth should reach 1/4th the distance to the surface of the inner enclosure.
and the lenght of the port should be 4times the port width.
confusing and doubting dimensions.. but i wont be able to explain you calculating method instead i thought i would make it easier for u all .. but dont worry this will give u exact measurements with an error margin of less than 10mm..
Victor on 10/20/2004 22:46:46
hey guys.. i need your views on this design.. dont stop writing.. specially all u gold members.. i need your expert views..
thanks
Victor
uochronos on 10/21/2004 00:31:56
it definatly a very interesting enclosure. it would be fun to play around with... i'm not reall big on bandpass enclosures but this is a very cool design is the response better then that of a standard bandpass? because thats the biggest thing i have against band pass enclosures if they tend to be one note systems so to speak..
also have you considered porting the center encloser? running a tube port threw the outer encloser and into the center one. not sure what it would change but it could look cool.
Chronos
Victor on 10/21/2004 05:12:54
well then it wud become something like a 6th order bandpass with the front and the back enclosure both ported.. but i am sure this wud not sound good..
Reason 1:- the transient response in the present design is good because of the springing action due to the sealed back. as soon as this is ported the transient response shall be lost.
Reason 2:- the tube wud have to be wound or folded and very long cause the path length should be such that the reverse phase reinforces the sound from the front enclosure to make it sound louder.and this tube wud have to be installed such that it does not block the flow of air in the outer enclosure. also keeping in mind that it does not take up a lot of space cause then the volume calculations for the outer encosure would go wrong.
Reason 3:- as it is the bandpass enclosures are known for booming.. and as soon as a port is added to the rear sealed enclosure the punch in the bass shall be completely lost.
You can experiment with it at your free will.. but i wud not recommend it..
Victor...
uochronos on 10/21/2004 13:25:53
i meant more porting the internal box instead of the outer one not both that does not make any sense... i think especialy if you used plexi glass for one side that that would look really cool.
Chronos
Victor on 10/21/2004 14:49:16
ok.. if thats what you want to say then i wud like to bring to your notice another thing.. .
the enclosure wud then become a simple 4th order bandpass..
the natural amplification because of the shape of the enclosure shall be lost as now the enclosure would not be affected by the horn type design..
Its because of the design of outer enclosure that there is a natural amplification in sound...
In this case then the front chamber would act only as a chamber and not as a horn..
another problem would be that the woofer would play out of phase as the sound produced shall be from the back side of the woofer cone.. of course this problem wud be solved by reversing the polarity of the woofer.. but why do so much for looks when all it is going to play is like a regular 4th order bandpass..
the plexiglass thing is fine.. but not many people have the expertise to work with plexiglass hence i avoided mentioning it earlier..
comments....??
Victor...
comments...???
alanjlamore on 10/21/2004 16:38:07
Victor, do you have any other pictures of the enclosure that you could send to a gold member so they can post? Digrams or actual pics?
From what I've seen online, the horn type of design has slanted boards directing the sound a certain way?
I'm still trying to figure out how the boxes are conected...
uochronos on 10/21/2004 17:01:52
ya thats the biggest thing i cant figure out here. is how does the porting work? looks to me from the limited picture here that tis just holes in the side of the box... whats the tuning frequency? and dont horn designs usualy net higher frequencies?
Chronos
Victor on 10/21/2004 18:11:26
well no.. horns do not always net higher frequencies..
a horn is created with the following parts..
a back wave enclosure..
a compression chamber..
an expansion path..
and the mouth of the horn..
the fundamentals of a horn are compressing the sound and the gradually expanding it to increase the amplitute and the area of distribution of the sound..
the above design is not exactly a horn loaded design..nor an exact bandpass..
it uses the compression chamber (ie. the front area ) from where the sound passes through a path (ie. the side paths ..usually of a progressive width in a horn...but not in this case..).. and the mouth( ie. the back area with the air outlet...which again is a progressive width but here it is slightly changed..
if you look carefully the holes that u can see are actually not ports.. they are the mouth of the horn devided into 3 parts..
hehehe... smart disguise to make it look like a band pass... but i think designing is all about innovation..lol..
and horns dont have port tuning frequencies cause they dont have ports itself..hehe..
but i am not able to judge the distribution of fundamentals between a bandpass and a horn for this design. may be 30% bandpass --70% horn..
comments..??
Victor...
Victor on 10/21/2004 18:15:59
ONE THING I AM SURE OF IS THAT THIS DESIGN SELLS LIKE HELL.. AFTER I POSTED THIS TOPIC..ie. MAY BE 3 DAYS BACK.. I SOLD 8 BOXES IN THESE 3 DAYS... AND THEY ARE IMPRESSIVE PERFORMERS.. HEY I THOUGT A NAME FOR IT..
ONE OF MY CUSTOMERS SUGGESTED IT TO ME..
TORNADO.. aint it cool.. may be it suggest the right properties of the enclosure..
well what do u have to say.. gimme some more suggestions or i shall put on this name..
comments..??
Victor...
Mizah_Mar on 10/21/2004 19:35:13
you said that the calculations would be done accordingly to a 4th order bandpass. so which areas would you denote as the "front" chamber, "rear" chamber and port(s)?
here's an example of a front loaded horn/4th order bp design. http://www.decware.com/whorn.htm
although some people have argued whether the wicked one is truly a horn or not, it has been discussed as to what it really is. http://www.speakerplans.com/page94.html
Victor on 10/21/2004 19:45:58
dont try and confuse yourself...
just the volumes to be used shall be according to the 4th order bandpass calculations..
the Vr shall be the inner box and the Vf the outer box.. thats it.. do not involve any other complications in it.. no ports.. cause its a horn too..
look.. i already told you thats its pretty confusing to actually clearify the fundamentals and give exact box calculations..but it has worked fine with me and my customers all the way.
this is not an accepted design by the car audio world.
Its pretty new and very few know about it. ( only those whom i have told)..
i dont have a mathematical solution or an equation for making this enclosure.. it is highly debatable.. but as far as i have made these enclosures using the 4th order bandpass volumes and the ratios of the spaces i mentioned above it has worked perfectly fine with me..
using woofer sizes of 8", 10" 12" ... 2x 8" and 2x10".. i have been sucessful in selling these too. never had a complain for damaging the woofer or unloading it..
using this design is entirely upto you..
comments..???
Victor...
Faded on 10/22/2004 05:06:58
TheBoomBox
here's the layout sketch,,
lol.. i dunno how to put up a pic here.. please help me..
Replies (32)
asplundher on 10/20/2004 07:49:48
Sorry, theres no pics here at least for now.
Have you tried it in a car yet?
Victor on 10/20/2004 10:12:08
oh yes.. and the results are amazing..
i really wish to share this design with u guys.. i did see a pic by someone.. i dunno remember but it was in the topic on inverted sub.. check it out. theres is a pic of inverted subs put on by someone.. i wanna know how he did it so that i can put on the design..
coments??
Victor on 10/20/2004 10:14:49
ok.. the pic is put on by Relax_The_Mind in the topic " subs outside the box" by jfin..
please help me put on the design
Victor
Relax_The_Mind on 10/20/2004 11:26:38
you cant upload pics to here you have to link them froma hosted site.
you can email it to me and i can host it for you on my server
vicflo@gmail.com
Victor on 10/20/2004 11:30:17
thanks dude.. i have mailed it to you please post it up asap...
thanks again..
Victor....
Relax_The_Mind on 10/20/2004 12:39:22
Here it is
Victors Pic
courtesy of Vicflo
Relax_The_Mind on 10/20/2004 12:42:35
thats kind of like having a sealed box in a tiny trunk. hehe
I wrote up plans to make a box from teh internals of a Bose™ bass module. I opened one up and saw that all that bass came from two small cheap paper cone 5¼" speakers in an innovative bass reflex design.
vicflo
admin on 10/20/2004 13:02:39
For everyones info, Only gold members can use HTML in posts so even if regular users try to link an image it will fail.
alanjlamore on 10/20/2004 13:42:43
Makes sence that we can't upload pictures, it could get pretty offensive letting everyone in internet land with an email address post pictures here.
Victor, that enclosure looks pretty interesting! Do you mind sharing what sub you used?
I'm currently still saving up money (and time) to build my own ported box for an Infinity kappa perfect 10" sub. I might decide to try this type of box instead (if you don't mind of course).
From the diagram it looks like a sub in a sealed box, inside a ported box?
If so, would the sealed box still use the specifications for a regular sealed box?
I'll read up more on bandpass and horn loaded enclosures too...
Faded on 10/20/2004 13:48:21
thats almost like a FoldedHorn enclosure those are supposed to be very good in picking up low bass
Victor on 10/20/2004 13:51:02
yeah vicflo thats what it seems like at the first look.. but believe me the results are stunning....
well alanjlamore.. u can surely use the desing if you like it.. i have sold 17 of those boxes in India..
no the calculations of the inner sealed box shall not be like a regular sealed box.. the volume calulations of the internal as well as the external volumes should be according to 4th order bandpass enclosure.. but the same bandpass with a different design shall play very different from this on.. if u study the design in detail its much like a horn loaded woofer where there is a rear chamber ,, a compression chamber and a expanding port length which amplifies the sound acoustically..
but it is a bandpass subwoofer in its basics cause a woofer from a sealed enclosure fires into another ported chamber.. so its pretty confusing to give it a proper name..
but trust me it is an extraordinay performer especially in the lower frequency range.. and unlike other badpass it has a good transient response too..
according to me u can definitely give this design a thought for ur new woofer..
Victor on 10/20/2004 13:59:17
yes one more thing i forgot to mention the ratio of the spaces in the front and the sides should be 4(front):3(both sides):2(port side).. keep in mind these ratios, while the volumes can differ these ratios should remain constant if you do not want to mess up with the design,, if the specs do not allow you to abide by these ratios then you can compensate the volume in height but not in the plan dimensions..
Best luck..
I feel this is going to be one of those successful designs of mine.. and you guys out there please also tell me if I plan to patent this design how can i do it and how much will i have to spend for this..
as of now.. its completely free and without any legalities so u guys can freely use it upto ur hearts content..
one more thing for you goldies out there..
I promise to donate this site from the royalty i receive if i am successful in patenting this design..
thanks
Victor...
Faded on 10/20/2004 14:01:41
http://www.cerwinvega.com/PRODUCTS/professional/vegabass/images/foldedhorn.gif
Victor on 10/20/2004 14:07:27
hey faded.. thats a good design.. i did try to copy that one.. but i was unsuccessful because of the space calculations and the extreme angles in the design.. if any of you could make that one from cerwin vega it is a pretty loud enclosure..
also i forgot to tell u one thing .. do not try and make an enclosure for 15" or 18" woofers cause then the box would become too huge and you will kill the punch.. i tried making one with 15" but the lower frequencies were so over powering that it sounded toooooo booming and no punch..
yes if you have ample space and like boomy bass then the choice is all yours..
alanjlamore on 10/20/2004 14:12:37
Here's a link to the US patent and trademark office:
http://www.uspto.gov/web/patents/howtopat.htm
You did say you sold these in India, right? Are you looking to get a US patent? I don't know anything about other country's patents, but I looked into getting one for an idea I had and I think the actual patent was about $400ish (american $) plus the lawyers' fees.
It ended up being more than I could afford at the time...
asplundher on 10/20/2004 14:25:56
Would you say it would be a good design for eights in saving space with still good bass?
Victor on 10/20/2004 14:31:12
anything from 8" to 12" wud do.. io wud say 10 would be a good option for a balanced tone.. if you go for 8" you cud get a bit tighter bass and if for 12" it would give a boomier base.. (not much but u can make out the difference easily)
8" wud be good for classical performances..
if you listen to a lot of rap,, hip hop, trance rock etc.. go for the 10"s or the 12"s
Victor on 10/20/2004 14:35:26
HEY COULD YOU GUYS PLEASE THINK OF A NAME FOR THIS DESIGN.
alanjlamore on 10/20/2004 14:39:44
The Victor-horn-pass enclosure...
The Victor-band-horn enclosure...
The Horn-pass enclosure...
The Band-horn enclosure...
Or any variation with your last name maybe
Victor on 10/20/2004 15:02:08
I keep on forgetting things.. MATERIALS TO BE USED..
3/4" Medium density fibre board or thicker ( if you like it heavy.. hehe)
Rubber adhesive to fill in all the air gaps at the joints.
Do not nail the wood.. cause then in future it wud be tough to dis-assemble the box if you need to upgrade the woofer.
Use 1.25" screws.. Pre-drill the holes.
All the inner walls should be lined with 1/2" sponge sheet( or any other sound absorbant) to cut out noise and unwanted high frequencies efficiently.
line the outer surface of the box with the material of your choice.. taking care that there is NO kind of obstruction to the ports..
Smoothen the edges of the ports to avoid port noise.
port width , depth and length ..
the centre port should be one and a half times wider the other two ports, cause this port handles the extra air that the other ports reflect or discard.. the other two ports should not be less than 1" for 8"... 1.5" for 10" and... 2" for 12" sub-woofers..
the port depth should reach 1/4th the distance to the surface of the inner enclosure.
and the lenght of the port should be 4times the port width.
confusing and doubting dimensions.. but i wont be able to explain you calculating method instead i thought i would make it easier for u all .. but dont worry this will give u exact measurements with an error margin of less than 10mm..
Victor on 10/20/2004 22:46:46
hey guys.. i need your views on this design.. dont stop writing.. specially all u gold members.. i need your expert views..
thanks
Victor
uochronos on 10/21/2004 00:31:56
it definatly a very interesting enclosure. it would be fun to play around with... i'm not reall big on bandpass enclosures but this is a very cool design is the response better then that of a standard bandpass? because thats the biggest thing i have against band pass enclosures if they tend to be one note systems so to speak..
also have you considered porting the center encloser? running a tube port threw the outer encloser and into the center one. not sure what it would change but it could look cool.
Chronos
Victor on 10/21/2004 05:12:54
well then it wud become something like a 6th order bandpass with the front and the back enclosure both ported.. but i am sure this wud not sound good..
Reason 1:- the transient response in the present design is good because of the springing action due to the sealed back. as soon as this is ported the transient response shall be lost.
Reason 2:- the tube wud have to be wound or folded and very long cause the path length should be such that the reverse phase reinforces the sound from the front enclosure to make it sound louder.and this tube wud have to be installed such that it does not block the flow of air in the outer enclosure. also keeping in mind that it does not take up a lot of space cause then the volume calculations for the outer encosure would go wrong.
Reason 3:- as it is the bandpass enclosures are known for booming.. and as soon as a port is added to the rear sealed enclosure the punch in the bass shall be completely lost.
You can experiment with it at your free will.. but i wud not recommend it..
Victor...
uochronos on 10/21/2004 13:25:53
i meant more porting the internal box instead of the outer one not both that does not make any sense... i think especialy if you used plexi glass for one side that that would look really cool.
Chronos
Victor on 10/21/2004 14:49:16
ok.. if thats what you want to say then i wud like to bring to your notice another thing.. .
the enclosure wud then become a simple 4th order bandpass..
the natural amplification because of the shape of the enclosure shall be lost as now the enclosure would not be affected by the horn type design..
Its because of the design of outer enclosure that there is a natural amplification in sound...
In this case then the front chamber would act only as a chamber and not as a horn..
another problem would be that the woofer would play out of phase as the sound produced shall be from the back side of the woofer cone.. of course this problem wud be solved by reversing the polarity of the woofer.. but why do so much for looks when all it is going to play is like a regular 4th order bandpass..
the plexiglass thing is fine.. but not many people have the expertise to work with plexiglass hence i avoided mentioning it earlier..
comments....??
Victor...
comments...???
alanjlamore on 10/21/2004 16:38:07
Victor, do you have any other pictures of the enclosure that you could send to a gold member so they can post? Digrams or actual pics?
From what I've seen online, the horn type of design has slanted boards directing the sound a certain way?
I'm still trying to figure out how the boxes are conected...
uochronos on 10/21/2004 17:01:52
ya thats the biggest thing i cant figure out here. is how does the porting work? looks to me from the limited picture here that tis just holes in the side of the box... whats the tuning frequency? and dont horn designs usualy net higher frequencies?
Chronos
Victor on 10/21/2004 18:11:26
well no.. horns do not always net higher frequencies..
a horn is created with the following parts..
a back wave enclosure..
a compression chamber..
an expansion path..
and the mouth of the horn..
the fundamentals of a horn are compressing the sound and the gradually expanding it to increase the amplitute and the area of distribution of the sound..
the above design is not exactly a horn loaded design..nor an exact bandpass..
it uses the compression chamber (ie. the front area ) from where the sound passes through a path (ie. the side paths ..usually of a progressive width in a horn...but not in this case..).. and the mouth( ie. the back area with the air outlet...which again is a progressive width but here it is slightly changed..
if you look carefully the holes that u can see are actually not ports.. they are the mouth of the horn devided into 3 parts..
hehehe... smart disguise to make it look like a band pass... but i think designing is all about innovation..lol..
and horns dont have port tuning frequencies cause they dont have ports itself..hehe..
but i am not able to judge the distribution of fundamentals between a bandpass and a horn for this design. may be 30% bandpass --70% horn..
comments..??
Victor...
Victor on 10/21/2004 18:15:59
ONE THING I AM SURE OF IS THAT THIS DESIGN SELLS LIKE HELL.. AFTER I POSTED THIS TOPIC..ie. MAY BE 3 DAYS BACK.. I SOLD 8 BOXES IN THESE 3 DAYS... AND THEY ARE IMPRESSIVE PERFORMERS.. HEY I THOUGT A NAME FOR IT..
ONE OF MY CUSTOMERS SUGGESTED IT TO ME..
TORNADO.. aint it cool.. may be it suggest the right properties of the enclosure..
well what do u have to say.. gimme some more suggestions or i shall put on this name..
comments..??
Victor...
Mizah_Mar on 10/21/2004 19:35:13
you said that the calculations would be done accordingly to a 4th order bandpass. so which areas would you denote as the "front" chamber, "rear" chamber and port(s)?
here's an example of a front loaded horn/4th order bp design. http://www.decware.com/whorn.htm
although some people have argued whether the wicked one is truly a horn or not, it has been discussed as to what it really is. http://www.speakerplans.com/page94.html
Victor on 10/21/2004 19:45:58
dont try and confuse yourself...
just the volumes to be used shall be according to the 4th order bandpass calculations..
the Vr shall be the inner box and the Vf the outer box.. thats it.. do not involve any other complications in it.. no ports.. cause its a horn too..
look.. i already told you thats its pretty confusing to actually clearify the fundamentals and give exact box calculations..but it has worked fine with me and my customers all the way.
this is not an accepted design by the car audio world.
Its pretty new and very few know about it. ( only those whom i have told)..
i dont have a mathematical solution or an equation for making this enclosure.. it is highly debatable.. but as far as i have made these enclosures using the 4th order bandpass volumes and the ratios of the spaces i mentioned above it has worked perfectly fine with me..
using woofer sizes of 8", 10" 12" ... 2x 8" and 2x10".. i have been sucessful in selling these too. never had a complain for damaging the woofer or unloading it..
using this design is entirely upto you..
comments..???
Victor...
Faded on 10/22/2004 05:06:58
TheBoomBox
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