What Dave and X mean is that I design them. I use a mixture of software, including some of my own.
Sorry xD I'am a noob ehehehe
So, what do you think about the previous simulation of a simple TL?
Thank you
So, what do you think about the previous simulation of a simple TL?
Thank you
Thank you planet10, wonderful designs!
But at the end I prefer to simulate and realize my own project, though works certainly worst than the design of expert people like Scottmose, you and other 😀
For the moment I would like to use the W3-871 also to compare with my actual DCAAV design with the same speaker.
Now, I like the Woden Baby Labs suggested by you (planet10) in one of the first post, but I don't know how simulate it because there are 3 segment with different cross- section and I am not able to put this three segment in hornesp withouth adding a conical "interface" between the two segment with different cross-section. But the problem it is that it is only possible to put 4 different segment in Hornesp but to simulate it is required 3 segment + 2 "interface" segment.
I have made some other simulation with a mass loaded TL and this is the results:
This is the simulation of a normal TL of length 110cm and s=55cm^2
How I can remove the various notch frequency? I see that if I increase the distance between the TL output and the speaker the notch is highly reduced but still remain some sharp peak.
I add some filling but still remain.
Thank you very much at all!
Now if I add some damping material inside the box:
But at the end I prefer to simulate and realize my own project, though works certainly worst than the design of expert people like Scottmose, you and other 😀
For the moment I would like to use the W3-871 also to compare with my actual DCAAV design with the same speaker.
Now, I like the Woden Baby Labs suggested by you (planet10) in one of the first post, but I don't know how simulate it because there are 3 segment with different cross- section and I am not able to put this three segment in hornesp withouth adding a conical "interface" between the two segment with different cross-section. But the problem it is that it is only possible to put 4 different segment in Hornesp but to simulate it is required 3 segment + 2 "interface" segment.
I have made some other simulation with a mass loaded TL and this is the results:
This is the simulation of a normal TL of length 110cm and s=55cm^2
How I can remove the various notch frequency? I see that if I increase the distance between the TL output and the speaker the notch is highly reduced but still remain some sharp peak.
I add some filling but still remain.
Thank you very much at all!
Now if I add some damping material inside the box:
New simulation by working on the filling:
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There are still the big inverse peak in between 400-600hz 🙁
There are still the big inverse peak in between 400-600hz 🙁
The sim will not be accurate much above 400 Hz, you are looking at the way the bass rolls off. The stuff up high will disappear in the real box w stuffing.
You probably would like the roll-off at the bottom to be gentler.
dave
You probably would like the roll-off at the bottom to be gentler.
dave
Thank you planet10!
I continue to simulate the speaker to find the best size 🙂
I try to reduce the roll-off, which parameters influences the roll-off?
I continue to simulate the speaker to find the best size 🙂
I try to reduce the roll-off, which parameters influences the roll-off?
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I have tryed to change various parameter but seems to be that the roll-off remain the same 🙁
A stupid questions, Is not the roll-off only related at the type of load?
Some tips?
A stupid questions, Is not the roll-off only related at the type of load?
Some tips?
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The peak might be difficulat to remove given that the W3-871 is not really suited to a box with a hole in it, unless heavily damped (ie pushed towards aperiodic).
If playing with the shape and venting doesn’t sort your issue, try increasing the density of stuffing. You might well have to do this after build as the parameters needed to sim damping start to fail as density increase.
dave
If playing with the shape and venting doesn’t sort your issue, try increasing the density of stuffing. You might well have to do this after build as the parameters needed to sim damping start to fail as density increase.
dave
Hi Planet10,
Thank you very much for your help 🙂
Now, I am trying to simulate this TABAQ: TABAQ with FaitalPro 3FE22
This is the results:
I understand my problem, I use too low filling
For example in this simulation I use only 7g of stuffing:
I don't understand why I obtain always 10dB higher gain simulating with Hornesp, If I use the SW Trasmission line of Leonardaudio I obtain the correct gain.
Now, for the speaker I think to use the W3-1364S that seems to be good.
This is the results, the filling is quit low (23g), can be OK?
The roll-off of my simulation and the simulation of TABAQ with FaitalPro 3FE22 is about the same 🙂
One questions, Do you think that it is a problem if the rear of the speaker is near an internal wall?
In addition, I see from the simulation that If the first segment(before the speaker) is little bit conical the response is little bit better.
Thank you again 🙂
Thank you very much for your help 🙂
Now, I am trying to simulate this TABAQ: TABAQ with FaitalPro 3FE22
This is the results:
I understand my problem, I use too low filling
For example in this simulation I use only 7g of stuffing:
I don't understand why I obtain always 10dB higher gain simulating with Hornesp, If I use the SW Trasmission line of Leonardaudio I obtain the correct gain.
Now, for the speaker I think to use the W3-1364S that seems to be good.
This is the results, the filling is quit low (23g), can be OK?
The roll-off of my simulation and the simulation of TABAQ with FaitalPro 3FE22 is about the same 🙂
One questions, Do you think that it is a problem if the rear of the speaker is near an internal wall?
In addition, I see from the simulation that If the first segment(before the speaker) is little bit conical the response is little bit better.
Thank you again 🙂
Hi All,
Instead of the tang-band I would like to use the Dayton RS100-8, what do you think about this driver?
This is the simulation:
Now the acoustical power is correct, because I have set the Ang a 2xPi!
Do you think that it is a good result?
Some questions.
1.Do you think that it is a problem if the rear of the speaker is near an internal wall?
2.I see from the simulation that If the first segment(before the speaker) is little bit conical the response is little bit better, can be a good approc do the first segment conical?
3. Do you think that is necessary to add some filter to the speaker?
Thank you very much for your time and help!
Instead of the tang-band I would like to use the Dayton RS100-8, what do you think about this driver?
This is the simulation:
Now the acoustical power is correct, because I have set the Ang a 2xPi!
Do you think that it is a good result?
Some questions.
1.Do you think that it is a problem if the rear of the speaker is near an internal wall?
2.I see from the simulation that If the first segment(before the speaker) is little bit conical the response is little bit better, can be a good approc do the first segment conical?
3. Do you think that is necessary to add some filter to the speaker?
Thank you very much for your time and help!
I'am working on the simulation with the Dayton RS100-8. I am started from about the measures of the BabyLabs and this is the new results:
Seems to be a better results, no?
These questions are still open:
1.Do you think that it is a problem if the rear of the speaker is near an internal wall?
2. Do you think that is necessary to add some filter to the speaker?
3. Should I put the output mouth of the MLTL in the front pannel?
Thank you very much!
Seems to be a better results, no?
These questions are still open:
1.Do you think that it is a problem if the rear of the speaker is near an internal wall?
2. Do you think that is necessary to add some filter to the speaker?
3. Should I put the output mouth of the MLTL in the front pannel?
Thank you very much!
Hi Bjohannesen,
Thank you very much for the simulations.
I see that you use 100gr of the filling, in my simulation there are less less filling (about 20g I think).
Which filling do you use?
What do you think about my previos simulation?
Thank you very much for the simulations.
I see that you use 100gr of the filling, in my simulation there are less less filling (about 20g I think).
Which filling do you use?
What do you think about my previos simulation?
Hi Bambinz
The dips and peaks look very much like the ones I get with MJK`s models.
The stuffing I use in TABAQ is 100 gram or 60 gram for the 4" drivers with a lower Qts.
Hi
Bjørn
The dips and peaks look very much like the ones I get with MJK`s models.
The stuffing I use in TABAQ is 100 gram or 60 gram for the 4" drivers with a lower Qts.
Hi
Bjørn
Hi,
Which material did you use?
Thank you ! 🙂
For the others questions? could you help me?
Thank you
Which material did you use?
Thank you ! 🙂
For the others questions? could you help me?
Thank you
Depends on your performance goals, location/orientation, room acoustics.
It can be, so how close?
Again, depends on your performance goals, etc.. As a general rule, 'FR' speakers usually need some sort of baffle step compensation [BSC]: General Speaker Related Articles
Depends....... the notches, 'ripple' you've been trying to reduce/delete in your sims are due to driver, vent path length differences in the way HR displays/calculates the summed output's frequency response, so use 'path' in 'chamber' to find optimal offset, though ideally we want the driver, vent located at a pipe's odd harmonics, which normally means putting the vent near/at the bottom of the baffle. If so, then 'path' offset will be = L23.
GM
Hi GM,
Thank you very much for your help!
The speaker will be positioned on a drawers in the bed room and drived with an class D amplifier (FX audio FX-AUDIO FX1002A)
For example 1-2cm.
Now I will read the article on the baffle step compensation! Thank you again!
I have trayed to eliminate the valley in the region of 600Hz but, for the moment, I'am not able to do that, can be a problem?
Instead, I have eliminated the "first valley" by tuning the driver position!
Thank you again!
Thank you very much for your help!
The speaker will be positioned on a drawers in the bed room and drived with an class D amplifier (FX audio FX-AUDIO FX1002A)
For example 1-2cm.
Now I will read the article on the baffle step compensation! Thank you again!
I have trayed to eliminate the valley in the region of 600Hz but, for the moment, I'am not able to do that, can be a problem?
Instead, I have eliminated the "first valley" by tuning the driver position!
Thank you again!