It is an enormous voice coil. And you could make a decent arguement that the faraday rings are not really needed in a subwoofer.
And an equally valid arguement, more so in my estimation that Faraday rings would make for a much easier woofer to drive with most power amplifiers. There will be some pretty nasty reactances in the response of the driver.
What impresses me the most about driver is that it has a decent sensitivity. Kind of rare in a Car audio subwoofer.
And an equally valid arguement, more so in my estimation that Faraday rings would make for a much easier woofer to drive with most power amplifiers. There will be some pretty nasty reactances in the response of the driver.
What impresses me the most about driver is that it has a decent sensitivity. Kind of rare in a Car audio subwoofer.
Hornresp Update 4400-180503
Hi Everyone,
CHANGE 1
A compound horn system can now have the driver offset in Horn 1.
Attachments 1 to 3 refer.
CHANGE 2
The throat adaptor can now have a conical, exponential or parabolic flare. Previously the flare was fixed at conical. Front loaded horns, back loaded horns and normal compound horns can now in effect have up to five segments.
Attachment 4 refers.
BUG FIX
The driver database file problem described in Posts #8244 and #8249 has now been fixed. My thanks to 'Dix0' for reporting the bug.
Kind regards,
David
Hi Everyone,
CHANGE 1
A compound horn system can now have the driver offset in Horn 1.
Attachments 1 to 3 refer.
CHANGE 2
The throat adaptor can now have a conical, exponential or parabolic flare. Previously the flare was fixed at conical. Front loaded horns, back loaded horns and normal compound horns can now in effect have up to five segments.
Attachment 4 refers.
BUG FIX
The driver database file problem described in Posts #8244 and #8249 has now been fixed. My thanks to 'Dix0' for reporting the bug.
Kind regards,
David
Attachments
Hi David:
These changes are great and moving in the right direction. More segments is always better. Thanks!
Not to be greedy
but, with a conical throat adapter can we have an OS first segment that starts out tangent to that conical throat adapter and then continue with the existing definitions for the remaining segments? Or could we do that in the throat adapter.
Matching CD exit angle is said to be important; it would nice to be able to see the benefit in simulations.
With 3D printing we can DIY such throats and throat adapters...
Jack
These changes are great and moving in the right direction. More segments is always better. Thanks!
Not to be greedy
but, with a conical throat adapter can we have an OS first segment that starts out tangent to that conical throat adapter and then continue with the existing definitions for the remaining segments? Or could we do that in the throat adapter. Matching CD exit angle is said to be important; it would nice to be able to see the benefit in simulations.
With 3D printing we can DIY such throats and throat adapters...
Jack
Hi Jack,
The Horn Segment Wizard can be used to match the throat entry half-angle (AT) of an OS waveguide to the mouth flare tangent angle (Fta) of a conical throat adaptor.
The attached example assumes that the conical throat adaptor has an Fta of 6 degrees, and that the OSW has a throat area of 10 cm^2, a mouth area of 200 cm^2 and an axial length of 5 cm. The Wizard will calculate the OSW flare having an AT of 6 degrees, exactly matching the 6 degree conical throat adaptor Fta.
Segments 2, 3 and 4 cannot be used when an Obl flare is specified.
Kind regards,
David
Attachments
Hi Etocynned,
Suggest you search using the keywords 'Hornresp tutorial' instead.
The Input Wizard accessed from under the Hornresp Help menu will allow you to quickly generate an indicative design of the system you have in mind, step by step. You can then adjust the parameter values as required for your specific project.
Kind regards,
David
Attachments
Yeah, that HCCA-152 was certainly a good test and validation that the semi-inductance model accounts for the disparity between modeling and measuring that JAG was seeing in these type of drivers. I will keep you in mind for Beta testing as I get my spreadsheet cleaned up. Sadly I have many irons in the fire and don’t work nearly as fast as DMcBean.
@David McBean,
When do you sleep?!?!
Hi keantoken,
The Hornresp wavefront simulator uses a relatively simple "ripple tank" model. You are definitely asking too much of it.
.
Kind regards,
David
The Hornresp wavefront simulator uses a relatively simple "ripple tank" model. You are definitely asking too much of it
..Kind regards,
David
Hi Andreas,
It is possible to specify acoustical lining in a closed rear chamber using Fr and Tal, or to specify a port tube in a vented rear chamber using using Ap and Lpt, but it is not possible to specify both together. Selecting the 'resonances masked' option will however remove the higher frequency standing-wave box resonances from the predicted response.
It is possible to include absorbent filling material in a vented chamber as shown in the attachments. It is not quite the same as adding a layer of acoustical lining to just the cabinet walls, but it will give you an indication of the effect you are likely to see.
Kind regards,
David
Attachments
Hi Marcelo,
Congratulations! Good to see that you have got your priorities right
.Kind regards,
David