Wh115

[rottbull]

Hello everyone

I would like your opinion on the response curves of the prototype that I am trying to draw,

knowing as described in the title is calculated for the frequencies of a kickbin

I ask you to tell me what you think and if you voyer a preference between the two curves, l one a a Vtc 7000 cc and other 10000cc

7000cc
[ externes Bild ]


10000cc
[ externes Bild ]


for exemple filter butterworth 7th cut 80hz 350hz
[ externes Bild ]

[Mark Halbedel]

Hi,

this is with the best will in the world little information.
Is Vtc supposed to mean volume of the chamber in front of the driver before the horn throat?
If so make it as little as possible.

Cheers, Mark

[rottbull]

hello Mark

yes Vtc mean volume of the chamber in front of the driver before the horn throat,

and i redraw it because many error in the plan i make a sketch and i post it and I think many error in akabak script transmit by horneresp because it calculate with conical with conical horn parameters with circle aera, not with rectangle aera

[rottbull]

[ externes Bild ]

[ externes Bild ]

It is the first jet

[Mark Halbedel]

Always go for a small chamber then.
I made a 2 x 12" kickbin with as little volume there as possible, works a treat.
Otherwise the upper part of the frequency respose will suffer, not with SPL,
but the phase response gets worse in the sense that the signal will be delayed unnecessary,
resulting in less agressive output. The chamber works as a low pass.

Cheers, Mark

[rottbull]

hi mark

you me tips to play on the volume of the rooms but by adjusting the volume of Vtc Chamber it should be,
but I lowered the volume of the driver a 54 litres Chamber with 44 cm in Lrc which in turn lowers the spl level but adjusts the frequency curve, that think you?

[rottbull]

[ externes Bild ]

maybe that I think that the driver will come through the nose of the warhead

I'd put at disposal the complete plan when I have rated him

[Mark Halbedel]

Wow that looks interesting.

When You really want to reach 350 Hz (necessary?), that is very close to
the optimum you can make with flat panels.

I'd leave te warhead fixed in the cabinet, and would remove a part of the rear panel
to get the driver in. As I see it the speaker is about 500 x 500 x 700mm, right?

I would put a structure onto the door panel then and displace as much volume in front of the driver as possible.
At least then you can try without the displacing wood inside and add it later.

Trust me, without reducing the front volume of the driver to 3 litres you can forget 350 Hz entirely.

Best, Mark

[Deathwish666]

Looks like the Void Incubus Kickfill, right?

[rottbull]

Yes this is an approach, I would try with 4 driver as the hyperfold of Void, not immediately because I finished one above and I would work on it

[rottbull]

@ Mark

the speaker 80x80x103.5 aproximatly that Hyperfold dimension

[Mark Halbedel]

Ah, that sounds more like it. Otherwise 100 Hz would have been ambitious.
So four 15" in a "Marshall" square arrangement facing to the rear? Any separation between the drivers (rear and front side)?

Cheers, Mark

/looking at tiny double 2x12" at home... :-/

[mobile-club-sounds]

At a size of 50 x 50 x 70 cm, the system could never play down to 100Hz.
Normally you would need a mouth area of 0,95m² at the Horn for performing down to 100 Hz.
So there is already a compromise with a horn length of approximately 1 meter in order to achieve the performance with 0,6m².

[all bass]

Yes this is an approach, I would try with 4 driver as the hyperfold of Void, not immediately because I finished one above and I would work on it

There is an old expired patent for exactly this type of 'pyramid' shaped folded horn. Not the Void hyperfold ofc... If you do a search on speakerplans.com you should be able find some potentially helpfull clues on this design.

Good luck!

[Externes Bild laden...]

[corell]

Are you aware that in the void hyperfold the drivers are not facing the back of the cabinet? They sit on the inner part of the pyramid with the cone facing the 4 outer sides of the cab. very much like you can see it in the double 10" horntop designed by SRAM (https://imageshack.com/f/1d4x10zoll6baj) but in two dimensions.
Either way, your appraoch with one driver facing the back is probably even more sensitive per driver, which i like. Void and Danley are all about power density, but i love to see people sqeezing the maximum out of each single chassis/driver rather than just putting a dozen of them in a tiny cab. Most of us dont have access to 32A or 64A socket on every gig, right?
What mark and all bass posted is very helpful for achieving a high upper crossover. Also look at the MKH230 design, it is in my opinion pretty much the best cab i ever heard doing 80-350Hz. You could take that and make it symmetrical for a start

[rottbull]

@all bass

I was inspired by this patent, this is a moment that I think but I had too much time to attack me, as I said above it is an approach, can be that I y arriverrai has approach me the Hyperfold need time and how something

[rottbull]

Also look at the MKH230 design, it is in my opinion pretty much the best cab i ever heard doing 80-350Hz. You could take that and make it symmetrical for a start

mkh230 is a double horn folded, hyperfolded is a Push pull hornfoled i think because i think four driver 15 " take plenty of room if you draw a hornfolded normaly

[rottbull]

sorry Corell

the link dont work i think use http://www.servimg.com/ ilimited download of picture and free

[Lammbock]

Nice project, keep on moving! Can you show us the arrangement of the 4 speakers? Greetings marcus

[rottbull]

[ externes Bild ]

60hz 106db 80hz 107db

2 paralelle 2 serie for 1 amplifier so with multiple speaker in Hornresp

[all bass]

Sims look pretty, but without input parameters no one can tell if you are on the right track.

Response looks very similar to the HD15 with the right driver, but that's a much smaller (578*508*578mm) cabinet. From a cabinet measuring 800*800*1035mm i'd expect a little more low end.

[rottbull]

complete sim with parameters are in the topics but they are delete

[rottbull]

Mark has me ask

[rottbull]

[ externes Bild ]

Hd15 1driver

[ externes Bild ]

Hd15 2 paralelle 2 serie in 1 amplifier so with multiple speaker in Hornresp

[rottbull]

[ externes Bild ]

there are not any on the overall plan but here's what it will look like

to be continued ....

[rottbull]

ampli samway fp7000
driver PD153 ER

[rottbull]

[ externes Bild ]

[ externes Bild ]

Placement Driver will be through the nose to be determined by him through eight screws to fit on the orange reinforcement

The empty nose and vacuum around the enclosed volume is filled with polyurethane foam

Remains only to the quotation

to be continued ....

[rottbull]

Hello friends
is anyone using Autocad 2015 because I would have a desgn to make its quotations properly
it's very hard to make something understandable and clean

pending your response thank you

Hello everyone

I would like your opinion on the response curves of the prototype that I am trying to draw,

knowing as described in the title is calculated for the frequencies of a kickbin

I ask you to tell me what you think and if you voyer a preference between the two curves, l one a a Vtc 7000 cc and other 10000cc

7000cc
[ externes Bild ]


10000cc
[ externes Bild ]


for exemple filter butterworth 7th cut 80hz 350hz
[ externes Bild ]

Hi,

this is with the best will in the world little information.
Is Vtc supposed to mean volume of the chamber in front of the driver before the horn throat?
If so make it as little as possible.

Cheers, Mark

hello Mark

yes Vtc mean volume of the chamber in front of the driver before the horn throat,

and i redraw it because many error in the plan i make a sketch and i post it and I think many error in akabak script transmit by horneresp because it calculate with conical with conical horn parameters with circle aera, not with rectangle aera

[ externes Bild ]

[ externes Bild ]

It is the first jet

Always go for a small chamber then.
I made a 2 x 12" kickbin with as little volume there as possible, works a treat.
Otherwise the upper part of the frequency respose will suffer, not with SPL,
but the phase response gets worse in the sense that the signal will be delayed unnecessary,
resulting in less agressive output. The chamber works as a low pass.

Cheers, Mark

hi mark

you me tips to play on the volume of the rooms but by adjusting the volume of Vtc Chamber it should be,
but I lowered the volume of the driver a 54 litres Chamber with 44 cm in Lrc which in turn lowers the spl level but adjusts the frequency curve, that think you?

[ externes Bild ]

maybe that I think that the driver will come through the nose of the warhead

I'd put at disposal the complete plan when I have rated him

Wow that looks interesting.

When You really want to reach 350 Hz (necessary?), that is very close to
the optimum you can make with flat panels.

I'd leave te warhead fixed in the cabinet, and would remove a part of the rear panel
to get the driver in. As I see it the speaker is about 500 x 500 x 700mm, right?

I would put a structure onto the door panel then and displace as much volume in front of the driver as possible.
At least then you can try without the displacing wood inside and add it later.

Trust me, without reducing the front volume of the driver to 3 litres you can forget 350 Hz entirely.

Best, Mark

Looks like the Void Incubus Kickfill, right?

Yes this is an approach, I would try with 4 driver as the hyperfold of Void, not immediately because I finished one above and I would work on it

@ Mark

the speaker 80x80x103.5 aproximatly that Hyperfold dimension

Ah, that sounds more like it. Otherwise 100 Hz would have been ambitious.
So four 15" in a "Marshall" square arrangement facing to the rear? Any separation between the drivers (rear and front side)?

Cheers, Mark

/looking at tiny double 2x12" at home... :-/

At a size of 50 x 50 x 70 cm, the system could never play down to 100Hz.
Normally you would need a mouth area of 0,95m² at the Horn for performing down to 100 Hz.
So there is already a compromise with a horn length of approximately 1 meter in order to achieve the performance with 0,6m².

Yes this is an approach, I would try with 4 driver as the hyperfold of Void, not immediately because I finished one above and I would work on it

There is an old expired patent for exactly this type of 'pyramid' shaped folded horn. Not the Void hyperfold ofc... If you do a search on speakerplans.com you should be able find some potentially helpfull clues on this design.

Good luck!

[Externes Bild laden...]

Are you aware that in the void hyperfold the drivers are not facing the back of the cabinet? They sit on the inner part of the pyramid with the cone facing the 4 outer sides of the cab. very much like you can see it in the double 10" horntop designed by SRAM (https://imageshack.com/f/1d4x10zoll6baj) but in two dimensions.
Either way, your appraoch with one driver facing the back is probably even more sensitive per driver, which i like. Void and Danley are all about power density, but i love to see people sqeezing the maximum out of each single chassis/driver rather than just putting a dozen of them in a tiny cab. Most of us dont have access to 32A or 64A socket on every gig, right?
What mark and all bass posted is very helpful for achieving a high upper crossover. Also look at the MKH230 design, it is in my opinion pretty much the best cab i ever heard doing 80-350Hz. You could take that and make it symmetrical for a start

@all bass

I was inspired by this patent, this is a moment that I think but I had too much time to attack me, as I said above it is an approach, can be that I y arriverrai has approach me the Hyperfold need time and how something

Also look at the MKH230 design, it is in my opinion pretty much the best cab i ever heard doing 80-350Hz. You could take that and make it symmetrical for a start

mkh230 is a double horn folded, hyperfolded is a Push pull hornfoled i think because i think four driver 15 " take plenty of room if you draw a hornfolded normaly

sorry Corell

the link dont work i think use http://www.servimg.com/ ilimited download of picture and free

Nice project, keep on moving! Can you show us the arrangement of the 4 speakers? Greetings marcus

[ externes Bild ]

60hz 106db 80hz 107db

2 paralelle 2 serie for 1 amplifier so with multiple speaker in Hornresp

Sims look pretty, but without input parameters no one can tell if you are on the right track.

Response looks very similar to the HD15 with the right driver, but that's a much smaller (578*508*578mm) cabinet. From a cabinet measuring 800*800*1035mm i'd expect a little more low end.

complete sim with parameters are in the topics but they are delete

Mark has me ask

[ externes Bild ]

Hd15 1driver

[ externes Bild ]

Hd15 2 paralelle 2 serie in 1 amplifier so with multiple speaker in Hornresp

[ externes Bild ]

there are not any on the overall plan but here's what it will look like

to be continued ....

ampli samway fp7000
driver PD153 ER

[ externes Bild ]

[ externes Bild ]

Placement Driver will be through the nose to be determined by him through eight screws to fit on the orange reinforcement

The empty nose and vacuum around the enclosed volume is filled with polyurethane foam

Remains only to the quotation

to be continued ....

Hello friends
is anyone using Autocad 2015 because I would have a desgn to make its quotations properly
it's very hard to make something understandable and clean

pending your response thank you