Greetings all,
I have downloaded Unibox v. 4.08 with a goal of designing a closed box for TAD1601A.
Question 1:
I believe that I have entered all the pertinent T/S parameters into the DDBase, i.e., Fs, Re, Qms, Qes, Sd, Vas, Xmax, and Le. There are many more, Le2, Re2, Pn, Rs, DUconfType, Qtc0, Vbca_phys, Qabca, Qlbca, Np, Dv, k, etc., which are filled with the drivers that came with the DDBase, but I have no idea how to obtain these.
Any help?
Question 2:
I am trying to investigate the relationship between the design Qtc and the Vb. There is a field "Wanted Qtc" and "Optimize Vb for wanted Qtc." Upon entering the Qtc value, e.g., 0.577 and enter "Start", the Unibox responds with "Run time Error 6, Owerflow."
O.K., so in the field "Closed box, Standard design, I enter the value 0.577, upon which the Unibox helpfully calculates all the values in the "Standard design."
I then take the calculated Vb and enter it into the "Design by Vb and Q". When I then repeat the steps "Optimize Vb for wanted Qtc", the Unibox
now helpfully re-calculates the "Physical Vb", but the values in the "Standard design" and the "Design by Vb and Q" do not agree.
Any help?
Should I use a different tool?
Kindest regards,
M
P.S. I am attaching the pertinent screan captures.
I have downloaded Unibox v. 4.08 with a goal of designing a closed box for TAD1601A.
Question 1:
I believe that I have entered all the pertinent T/S parameters into the DDBase, i.e., Fs, Re, Qms, Qes, Sd, Vas, Xmax, and Le. There are many more, Le2, Re2, Pn, Rs, DUconfType, Qtc0, Vbca_phys, Qabca, Qlbca, Np, Dv, k, etc., which are filled with the drivers that came with the DDBase, but I have no idea how to obtain these.
Any help?
Question 2:
I am trying to investigate the relationship between the design Qtc and the Vb. There is a field "Wanted Qtc" and "Optimize Vb for wanted Qtc." Upon entering the Qtc value, e.g., 0.577 and enter "Start", the Unibox responds with "Run time Error 6, Owerflow."
O.K., so in the field "Closed box, Standard design, I enter the value 0.577, upon which the Unibox helpfully calculates all the values in the "Standard design."
I then take the calculated Vb and enter it into the "Design by Vb and Q". When I then repeat the steps "Optimize Vb for wanted Qtc", the Unibox
now helpfully re-calculates the "Physical Vb", but the values in the "Standard design" and the "Design by Vb and Q" do not agree.
Any help?
Should I use a different tool?
Kindest regards,
M
P.S. I am attaching the pertinent screan captures.
Attachments
The Optimized Vb seems to depend on the values you select for Damping and Leakage. There are drop boxes that populate some common values based on some vague terms like "walls covered" but these are not set in stone. If you play around with the Qa and Ql values under "Desgin by Vb and Q" you will find the magic combination that is also used in the "Standard Design", which probably came out of a textbook, etc.
I have no idea why the optimizer crashes with a run time error. That is strange.
I have no idea why the optimizer crashes with a run time error. That is strange.
Sorry Pete beat me to it. To use Unibox you really only need to fill in the parameters from Fs to Le, plus the power you wish to apply ("Nominal Power"). Do not edit anything that is outside of the area with the plots and grey background.
Also note that when you use multiple drivers, the power entered as Nominal Power will be applied to each driver regardless of which drive unit configuration you choose.
Also note that when you use multiple drivers, the power entered as Nominal Power will be applied to each driver regardless of which drive unit configuration you choose.
Hi CharlieLaub,
first, thank you for your time in answering my questions. After I posted, I have been still investigating, and I can:
(i) confirm your notion that the "Optimize Vb for wanted Qtc" does indeed depend on the values for Damping and Leakage set either via the drop boxes or directly via the fields Qa and Ql values under "Design by Vb and Q". I am not quite sure about their purpose form practical point of view as I am not even sure how to measure them.
(ii) It seems that the optimizer, at least in the version I downloaded, appears to require to have all the three fields - Qa, Ql, and Vb filed, at lest with bogus numbers initially, otherwise it unhappily crashes. I have no doubt that yourself, being a smart programmer could fix it, but my only programming experience was back at the University, and I had no need for such ever since.
(iii) Thank you for confirming PeteMcK notion regarding some of the additional DDBase values. As I have been using the Unibox, I now understand that some of them in the "External components" are used for, I guess crude filter design.
I was thinking that the remaining ones may be used for the more sophisticated models, but I am no longer so convinced because they are filled in for all the drivers in the DDBase, and I have serious doubts that someone ran all the models for all the drivers.
So,although it would be interesting to understand their purpose from purely intellectual satisfaction, I will leave it at this, after all, I intent to use the tool to obtain conceptual understanding and not a "perfect" design.
Hi PeteMcK,
just like with CharlieLaub, I want to express my appreciation for for your time in answering my questions.
I can now proceed with my investigations, understanding that I am not missing any important design parameters.
Kindest regards,
M
first, thank you for your time in answering my questions. After I posted, I have been still investigating, and I can:
(i) confirm your notion that the "Optimize Vb for wanted Qtc" does indeed depend on the values for Damping and Leakage set either via the drop boxes or directly via the fields Qa and Ql values under "Design by Vb and Q". I am not quite sure about their purpose form practical point of view as I am not even sure how to measure them.
(ii) It seems that the optimizer, at least in the version I downloaded, appears to require to have all the three fields - Qa, Ql, and Vb filed, at lest with bogus numbers initially, otherwise it unhappily crashes. I have no doubt that yourself, being a smart programmer could fix it, but my only programming experience was back at the University, and I had no need for such ever since.
(iii) Thank you for confirming PeteMcK notion regarding some of the additional DDBase values. As I have been using the Unibox, I now understand that some of them in the "External components" are used for, I guess crude filter design.
I was thinking that the remaining ones may be used for the more sophisticated models, but I am no longer so convinced because they are filled in for all the drivers in the DDBase, and I have serious doubts that someone ran all the models for all the drivers.
So,although it would be interesting to understand their purpose from purely intellectual satisfaction, I will leave it at this, after all, I intent to use the tool to obtain conceptual understanding and not a "perfect" design.
Hi PeteMcK,
just like with CharlieLaub, I want to express my appreciation for for your time in answering my questions.
I can now proceed with my investigations, understanding that I am not missing any important design parameters.
Kindest regards,
M