Document on building a transmission line loudspeaker enclosure, a 498 KB PDF filed among schematics. A transmission line cabinet uses a long folded, damped duct behind the driver to extend bass response, so this is a construction and design reference rather than an electronic circuit. It is of interest to audio hobbyists and repairers rebuilding speaker cabinets, covering duct length, damping material and driver placement. Check the dimensions against the driver you intend to use, since line length is tuned to the driver parameters.
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