motone X Pipe Street Twin sound checks скачать в хорошем качестве

motone X Pipe Street Twin sound checks

Several sound checks with Stock Mufflers, and my own design short slip ons with 2 ctypes of DB Killers. Sound DB level Charts included. Protocol used: calibrated DB meter plugged into lap top for real time readout and graphing. A weighted, slow metering placed 3 meters from exhaust angled at 45 degrees to bike 2 feet off ground The charts should be rather self explanatory, but to summarize: The mufflers I use are 18" 2.5" diameter with a 1.5" perforated core wrapped with fiberglass batting. Very non restrictive and will actually increase flow over straight pipes as rpms approach redline. DB killers are (as applied) combination mechanical and absorption type when combined with the mufflers. Alone they are the mechanical type. with physical protrusions restricting the airflow.