otswim,
I think you should consider manually adjusting the path length. This module defaults to zero pathlength, but realistically your path length (physical distance between the center of the driver and the center of the port) will be more like 50 cm or so, depending on the details of your enclosure.
You can manually adjust path length in the Loudspeaker Wizard by selecting:
Power/Chamber/Combined and then setting "Path".
I'm a novice too, so if I'm leading otswim astray, please let us both know!
Also, what do you actually expect the enclosure to look like? Do you have a sketch you could share? It would help us to know if you are interpreting the model parameters correctly, and in deciding which module makes sense to use. You are using the Mass Loaded TL module, but depending on your actual configuration, the "Offset Port" TL module might be more appropriate.
Eric
I think you should consider manually adjusting the path length. This module defaults to zero pathlength, but realistically your path length (physical distance between the center of the driver and the center of the port) will be more like 50 cm or so, depending on the details of your enclosure.
You can manually adjust path length in the Loudspeaker Wizard by selecting:
Power/Chamber/Combined and then setting "Path".
I'm a novice too, so if I'm leading otswim astray, please let us both know!
Also, what do you actually expect the enclosure to look like? Do you have a sketch you could share? It would help us to know if you are interpreting the model parameters correctly, and in deciding which module makes sense to use. You are using the Mass Loaded TL module, but depending on your actual configuration, the "Offset Port" TL module might be more appropriate.
Eric
otswim,
But just to be clear, what does "mini-tower" mean to you? I'm thinking it means a tall straight sectioned box with a port at the bottom facing the floor. Is that what you mean? Your models have some tapered sections, which suggests you might have something else in mind. I just want to understand what you are thinking.
If you are thinking of a vented design, you may want to consider using the HR model for Transmission Line with Offset Port. That model includes the typical losses of a vented (ported) enclosure better than other models, according to David McBean, its developer. See his response to my my recent post on the Subwoofers Hornresp sticky thread for his confirmation of that.
Eric
But just to be clear, what does "mini-tower" mean to you? I'm thinking it means a tall straight sectioned box with a port at the bottom facing the floor. Is that what you mean? Your models have some tapered sections, which suggests you might have something else in mind. I just want to understand what you are thinking.
If you are thinking of a vented design, you may want to consider using the HR model for Transmission Line with Offset Port. That model includes the typical losses of a vented (ported) enclosure better than other models, according to David McBean, its developer. See his response to my my recent post on the Subwoofers Hornresp sticky thread for his confirmation of that.
Eric
Makes two of us!
Right, it includes the 1/4 WL pipe action's impact on damping the vent. What one will find is that it takes an acoustically [very] tall cab and more net Vb than an otherwise equivalent BR of the same tuning, yet folks still call them vented TLs [MLTLs] even though just tall BRs with a minor amount of damping same as a 'critically' damped BR, so for height and/or folded limitations, just do this to a BR: Click Test:
Right, it includes the 1/4 WL pipe action's impact on damping the vent. What one will find is that it takes an acoustically [very] tall cab and more net Vb than an otherwise equivalent BR of the same tuning, yet folks still call them vented TLs [MLTLs] even though just tall BRs with a minor amount of damping same as a 'critically' damped BR, so for height and/or folded limitations, just do this to a BR: Click Test:
How about the Daedalus Mini-TL, floorstanding speaker in Hobby HiFi 1/2012 (fill the bottom with sand, etc)
https://www.lautsprechershop.de/hifi/daedalus_mini_tl.htm
compare the Visaton B80 vs Dynavox LY302
https://www.parts-express.com/Visaton-B80-3.3-HiFi-Full-Range-Driver-8-Ohm-292-660
Visaton B 80
Thiele-Small Parameters
Resonant Frequency (Fs) 110Hz
DC Resistance (Re) 6.6Ω
Mechanical Q (Qms) 6.53
Electromagnetic Q (Qes) 0.69
Total Q (Qts) 0.63
Compliance Equivalent Volume (Vas) 0.0636ft³
----
https://www.parts-express.com/Dynavox-LY302F-3-1-2-Full-Range-Driver-295-612
Dynavox LY302
Thiele-Small Parameters
Resonant Frequency (Fs) 84.5Hz
DC Resistance (Re) 4.5Ω
Voice Coil Inductance (Le) 0.43mH
Mechanical Q (Qms) 6.47
Electromagnetic Q (Qes) 0.76
Total Q (Qts) 0.68
Compliance Equivalent Volume (Vas) 0.066ft³
-----
https://www.lautsprechershop.de/hifi/daedalus_mini_tl.htm
compare the Visaton B80 vs Dynavox LY302
https://www.parts-express.com/Visaton-B80-3.3-HiFi-Full-Range-Driver-8-Ohm-292-660
Visaton B 80
Thiele-Small Parameters
Resonant Frequency (Fs) 110Hz
DC Resistance (Re) 6.6Ω
Mechanical Q (Qms) 6.53
Electromagnetic Q (Qes) 0.69
Total Q (Qts) 0.63
Compliance Equivalent Volume (Vas) 0.0636ft³
----
https://www.parts-express.com/Dynavox-LY302F-3-1-2-Full-Range-Driver-295-612
Dynavox LY302
Thiele-Small Parameters
Resonant Frequency (Fs) 84.5Hz
DC Resistance (Re) 4.5Ω
Voice Coil Inductance (Le) 0.43mH
Mechanical Q (Qms) 6.47
Electromagnetic Q (Qes) 0.76
Total Q (Qts) 0.68
Compliance Equivalent Volume (Vas) 0.066ft³
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