av sprudel » 2020-12-02 11:25
The Cable: Blue Jeans Cable LC-1 Low Capacitance Audio Cable
The most important attributes of a line-level unbalanced audio cable are (1) shielding, and (2) capacitance. Heavy shielding protects audio signals from interference from outside sources. LC-1 Audio Cable uses a heavy double-braid shield, with one bare copper braid laid directly over another for extreme high coverage and high conductivity to ground; this is the identical shield configuration to Canare LV-77S, which tested best in our review of audio cable hum rejection characteristics (LC-1 hadn't been designed yet so wasn't tested at that time). By shrinking the center conductor to 25 AWG and foaming the polyethylene dielectric, we were able to get capacitance down to an extremely low 12.2 pF/ft, much better than LV-77S at 21 pF/ft. Capacitance can be important, particularly in long cable runs, because it contributes to rolloff of higher frequencies. The softer dielectric material and smaller center conductor, meanwhile, make the cable highly flexible and easy to route. LC-1 is built exclusively for Blue Jeans Cable by Belden, the leader in American communications cable, and is rated CM for in-wall installation in residential and commercial environments. For more information and specs on LC-1, read our "LC-1 Design Notes" article.
The Connectors: Taversoe Crimp RCA Plugs
Taversoe RCA Plug
Connectors are a critical part of any audio cable, because if the cable isn't well-joined to the connectors, or if the connectors don't make firm electrical contact with the jacks, it doesn't much matter how good the cable is. Our LC-1 cables are terminated with the Taversoe RCA plug, a high-quality RCA plug with an all-metal body and shell specifically designed for the perfect dimensions for use with LC-1. Its all-metal body, crimped tightly to the shield braid, completes the shielding assembly from cable end to cable end, to ensure that the cables do not become an entry point for noise. These plugs are gold-plated on all jack-contact surfaces, and employ a set of leaf-spring style grippers on the outer RCA ring which apply just the right amount of force to the jack to grip it firmly without overtightening.
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