Life can be a bit strange at times- certain dates roll around, and certain items in the closet, and one may be reminded of past projects and activities. And ponder "What ifs"?
What are the linking factors today?
So, this almost belongs in a category of retro technology, but still intriguing to me. And there are a lot of options to consider and ponder in one's spare time... I could use a bit extra of that myself!
So let's recall this very traditional but unfortunately unobatainium style of plate amp...
Straight forward connectivity and filter controls.
And the 15SW115 under consideration for a new POC bandpass test build...
Key parameters- Qts in particular, and Xmax. The ultra low Qts is critical to getting the driver to do what the enclosure wants- forget conventional sub drivers.
VituixCAD makes the calculations a LOT easier than back in the 80s, but there are still things to work out that could be called "secret sauce" as regards the front chamber and porting.
Next up I'll post examples of possibly the more extreme variations for chamber volume, to give an idea of the tradeoffs. The last test build was on the smaller end, for the 15NW100. I'm thinking about keeping Steve Mannings admonition in mind for the next one, "Go Large or Go Home!"
What are the linking factors today?
- An NIB (new in box) Hypex DS 8.0 subwoofer plate amp- like the mate, which was used for building a subwoofer with Dayton UM15 for Beverly's HT system some years ago. Came across it earlier this week organizing some things...
- A NIB B&C 15SW115 pro woofer, from storage in the garage- organizing things there, too... and a POC test cabinet with its baby brother, a B&C 15NW100. (yeah, some of you may be thinking I have a bad habit about pro drivers... topic for a different post)
- Tomorrow is the anniversary of when Beverly entered into Hospice in 2018 after a long battle with Pancreatic cancer from mid 2016. Another reminder of the sub I built for her which was passed down to her son....
- A number of discussions lately about sub builds and alternative plans for them... (can't say a guys thoughts turn to subwoofers in the spring, as spring certainly isn't here yet!)
So, this almost belongs in a category of retro technology, but still intriguing to me. And there are a lot of options to consider and ponder in one's spare time... I could use a bit extra of that myself!
So let's recall this very traditional but unfortunately unobatainium style of plate amp...
Straight forward connectivity and filter controls.
And the 15SW115 under consideration for a new POC bandpass test build...
Key parameters- Qts in particular, and Xmax. The ultra low Qts is critical to getting the driver to do what the enclosure wants- forget conventional sub drivers.
VituixCAD makes the calculations a LOT easier than back in the 80s, but there are still things to work out that could be called "secret sauce" as regards the front chamber and porting.
Next up I'll post examples of possibly the more extreme variations for chamber volume, to give an idea of the tradeoffs. The last test build was on the smaller end, for the 15NW100. I'm thinking about keeping Steve Mannings admonition in mind for the next one, "Go Large or Go Home!"
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