I think that's a PDF export from AutoCAD. Even AutoCAD has gone 3D in recent years.
Compare AutoCAD vs. AutoCAD Design Suite (Standard, Premium)
And now it's even available for the Mac.
http://www.autodesk.com/products/autodesk-autocad/compare/compare-platforms
Compare AutoCAD vs. AutoCAD Design Suite (Standard, Premium)
And now it's even available for the Mac.
http://www.autodesk.com/products/autodesk-autocad/compare/compare-platforms
Hi,
NEO Dan is correct, my drawings are AutoCAD. If anyone is looking for a free 2D environment this may fit the bill: Free 2D: Siemens PLM Software Solid Edge Free 2D.
I use PrimoPDF: http://primopdf.soft32.com/free-download?lp=adwords&gclid=CJDojMnGnbYCFSunPAodpH0AVg for the .pdf files. AutoCAD prints to PrimoPDF set as system printer.
Regards,
NEO Dan is correct, my drawings are AutoCAD. If anyone is looking for a free 2D environment this may fit the bill: Free 2D: Siemens PLM Software Solid Edge Free 2D.
I use PrimoPDF: http://primopdf.soft32.com/free-download?lp=adwords&gclid=CJDojMnGnbYCFSunPAodpH0AVg for the .pdf files. AutoCAD prints to PrimoPDF set as system printer.
Regards,
Thanks TB46
I am not so a fan of sketchup, this program does google like things, I am the boss not sketchup.
I go look at it.
regards
If you took the time to develop an understanding of how a particular CAD system works you could run it "like a Boss" instead of whining about how it won't do what you want. In fact it does exactly what you tell it to do.
Start with groups and components, there are many videos to demonstrate the concepts.
http://www.sketchup.com/intl/en/training/
Tip:
Draw a 4'x8' or 5'x5' rectangle and make it a group, then you can draw on that plane if it makes things easier for you.
Start with groups and components, there are many videos to demonstrate the concepts.
http://www.sketchup.com/intl/en/training/
Tip:
Draw a 4'x8' or 5'x5' rectangle and make it a group, then you can draw on that plane if it makes things easier for you.
Hi Dan
Wel maybe you are right, what I try to tell is that sketchup has a strange way of how to work with it.
But I can do already some things with it, I will do learn some furter because of
autocad is also not as easy and very big.
see photo what I already did with sketchup and have found a way for fodling with help of hornresp.
I wine no further and dry my tears
regards
Attachments
I make a sketch of 2x15'' push pull tapped horn, Box is not bigger than single 15'' tapped horn - 1000x700x566 mm external. Drivers are from thomann store - the box 15LB100-8W, 2 drivers cost only 190 euro. 4 boxes can be used 35-120hz @ 55v 4ohm = 140db
specs:
fs - 40,09 hz
Qms - 7,13
Qes - 0,35
Qts - 0,34
Res - 111,4 ohm
Rms - 5,5 kg/s
cms - 0,1 mm/N
Mms - 153,6 gr
Nref - 2,12 %
Bl - 24,7
Spl - 95,3 db
Vas - 113,5 Liter
Re - 5,5
Le - 1,4
driver depth 155mm
X-max -?
specs:
fs - 40,09 hz
Qms - 7,13
Qes - 0,35
Qts - 0,34
Res - 111,4 ohm
Rms - 5,5 kg/s
cms - 0,1 mm/N
Mms - 153,6 gr
Nref - 2,12 %
Bl - 24,7
Spl - 95,3 db
Vas - 113,5 Liter
Re - 5,5
Le - 1,4
driver depth 155mm
X-max -?
Attachments
I did also discover that woofers with moderate mms and vas do work wel, only your res is 111.4 ohm?
Did you use space between woofers as L12 L34 point? witch is normally in middle of one woofer.
BJORN some last question, a T_TQWT with two woofers do I put them in isobaric or above each other, and have the L34 L12 are bewteen them like my question about the tapped horn.
I have open a other thread for T-TQWT/tapped lines etc come only here for tapped horns.
Thanks all for the help.
In sketch L45 unfortunately is longer than in hornresp, but there was no way to draw another.Best option is that subs are side by side in straight line - i think.
this is my subwoofer for car - something between transmission line, tapped quarter wave pipe or tube (TQWP or TQWT)... This was experiment
I dont know - this was in documentation about woofer. I am not specialist in t/s parameters.
I dont use space between woofers. And how else can calculate 2 or more speakers in hornresp proper, meybe someone knows?
this is my subwoofer for car - something between transmission line, tapped quarter wave pipe or tube (TQWP or TQWT)... This was experiment
Attachments
Hi All
I have did model in akabak a tapped horn, first in hornresp.
in akabak because of putting a filter in, 24dB octave linkwitz.
the peak every tapped horn has around 80 Hz of 10 dB don,t go away
with a analog filter, now I think a filter in akabak is lossless and so
I have to include a resistor in akabak also.
I did make a S1-S2 a duct and add stuffing the peak is from the throat.
Handy tha akabak.
regards
I have did model in akabak a tapped horn, first in hornresp.
in akabak because of putting a filter in, 24dB octave linkwitz.
the peak every tapped horn has around 80 Hz of 10 dB don,t go away
with a analog filter, now I think a filter in akabak is lossless and so
I have to include a resistor in akabak also.
I did make a S1-S2 a duct and add stuffing the peak is from the throat.
Handy tha akabak.
regards
Attachments
Last edited:
Hi Kees,
I've been very busy for a week but have more time now.
You've posted a lot....I have a suggestion: Always post an input screen or refer(link) to one for each of every posted plot. Your posted AKAbak FR tells me nothing: Its for a TH obviously, thus resembles a summation of two coupled IR's that may be to far apart in time and have summed response that is not minimum phase. If EQ'd using a PEQ: more than one filter would be necessary if you cannot tame the response at the physical place of origin.
I find it's awkward and a bad design for any sub if necessarily needing EQ in the passband but not for global EQ'ing of a whole System setup.
BTW are you confident when adding any type of Filters in AkAbak?
b
PS: By confident I meant: Why not add PEQ Filters to your design and test if you can smooth out the FR?
Last edited:
Hi Kees,
I've been very busy for a week but have more time now.
You've posted a lot....I have a suggestion: Always post an input screen or refer(link) to one for each of every posted plot. Your posted AKAbak FR tells me nothing: Its for a TH obviously, thus resembles a summation of two coupled IR's that may be to far apart in time and have summed response that is not minimum phase. If EQ'd using a PEQ: more than one filter would be necessary if you cannot tame the response at the physical place of origin.
I find it's awkward and a bad design for any sub if necessarily needing EQ in the passband but not for global EQ'ing of a whole System setup.
BTW are you confident when adding any type of Filters in AkAbak?
b
PS: By confident I meant: Why not add PEQ Filters to your design and test if you can smooth out the FR?
Hi Bjorno
I have plans to make a T-TQWT with the infinity with two drivers, so I have a apart THrEAD to post, I go post the anwer there.
http://www.diyaudio.com/forums/subwoofers/232767-t-tqwt-subwoofer.html
if you go there you find more about the T-TQWT who is indeed a lot more forgiving, I go maybe in future actieve crossover for the tapped horn because I am curieus about the bass.
see you on my other thread.
thanks
kees
Hi Bjorno
I have plans to make a T-TQWT with the infinity with two drivers, so I have a apart THrEAD to post, I go post the anwer there.
http://www.diyaudio.com/forums/subwoofers/232767-t-tqwt-subwoofer.html
if you go there you find more about the T-TQWT who is indeed a lot more forgiving, I go maybe in future actieve crossover for the tapped horn because I am curieus about the bass.
see you on my other thread.
thanks
I went to that thread but is still confused as no input(or dimensioning) for the graphs are given and I've noticed that you may have problems to interpret the plots when extrapolation the use of damping material or to use filter simulations(HPF's LPF's PEQ's) to get an idea of a possible plausible final result.
b
kees
Hi bjorno
I have set the script in the new thread, I don not use PEQ only a low pass filter analog, I do not use plate amps, I do use mosfet hybride, (own design) have a allfet ready for eventual electronic bass with tapped horn, just now I want build some different boxes because interest how it sound, as I do with amps.
The script where i have done input of coils and caps for filter without the akabak own filter I have lost.
iI think measurements with my microphone will be best simulation is to get close.
If I go test tapped horn I get here again, now for T-tqwt I go y own now, or yours if you have a T-tqwt thread.
regards
kees
Hi Kees,
He if it's me ? you are referring to can: Ref. your post #3999: I've put TF(Transfer Function) info on how to add PEQ(s) to AKAbak ...or in MathCad that is IMO more convenient...in a picture:
b
Attachments
Hi Kees,
He if it's me ? you are referring to can: Ref. your post #3999: I've put TF(Transfer Function) info on how to add PEQ(s) to AKAbak ...or in MathCad that is IMO more convenient...in a picture:
b
Hi Bjorno
Thanks.
I am busy with a T-TQWT with two ifinity woofers, it do good in akabak only how to fold that, the two woofers above each other or do you isobaric (this is not possible here, woofers to deep) I do not need a notch here but I do if I als try a tapped horn in future to cure my curiosity.
L12 and L34 do this end between the two woofers? or have I need a minimum of in my case 33cm for L12 then I am between the two woofers.
regards
kees
Hi Kees,
I prefer to put the Drivers above each other thus not isobaric as your drivers are of good quality and if L12 when simulating appear being on the outside of the box where S4 intersects one of the drivers:
In order to preserve correct distance to the junction L12/L34 =the point between the Drivers:
You have to move S4 to one of the longer side of the box as L12 is short.
In practice: This implies you have to add a small distance X to L12= to be the Driver frame width + a very small clearance, not shown in HR and close the original S4.
Then place the new S4 with a L12= What HR shows in your simulation: I.e. at a distance= S4/(Driver frame width - X) in front of the Drivers, located on the Lid you need for to access Speaker drivers.
b
Thank you bjorno, this is what I need, I hav also download some tangband designs who explane also some things
I do see that a 1/4 alignment do widen the bandwith but give a peak on the low and high end, I did see when I do stuff it in akabak it do lower, also this is the case in the martin sheets, two woofers give a better vas/sd abd so better box action.
These woofers are indeed good made and not expensive, also did good in a tapped horn.
I have design already a allfet amplifier, fast one with current feedback, maybe later it go then active crossover.
picture example of the T-TQWT maybe you look at it.
regards
kees
I do see that a 1/4 alignment do widen the bandwith but give a peak on the low and high end, I did see when I do stuff it in akabak it do lower, also this is the case in the martin sheets, two woofers give a better vas/sd abd so better box action.
These woofers are indeed good made and not expensive, also did good in a tapped horn.
I have design already a allfet amplifier, fast one with current feedback, maybe later it go then active crossover.
picture example of the T-TQWT maybe you look at it.
regards
kees
Attachments
Last edited: