Blue Jeans Cable Canare 4S11 Speaker Cable, with Ultrasonically-Welded Conventional (Non-Bi-Wire) Terminations, (One Cable – for one Speaker); Assembled in The USA (20 Foot, Grey, Bananas to Spades)

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Product Description

BJC Speaker Cable, made with 4S11, Welded Locking Banana Plugs to Welded Spades, conventional (non-bi-wire) terminations, Grey

At Blue Jeans Cable, we were never happy with the conventional methods of attaching speaker cable to speaker terminals. Setscrews are fine, but lack pull strength; compression connections are never as strong as they look like they’re going to be; and solder, on large high-mass connectors, is slow going and tends to cause a lot of insulation meltback. Our solution: ultrasonic welding. Our Sonobond Ultrasonic Welder (made in West Chester, PA) welds the copper wire to the terminal without the excessive heat associated with conventional welding, fusing metal to metal in a tight, strong, low-resistance, reliable connection.

Conventional (non-bi-wired) Terminations:

This cable is made with two banana plugs on one end and two spade lugs on the other (and yes: that can be used in either direction!), for conventional speaker wiring. If you’re looking for a cable with two connectors on one end and four on the other for bi-wiring, we offer those as well — search our listings.

Ultrasonic-Welded Locking Bananas: a Blue Jeans Cable exclusive feature

The Connectors

Here are our spade and banana connectors prior to assembly. Notice anything? There’s no attachment mechanism for the wire — no set screws, no clamps, nothing but a channel for the wire to sit in. We designed these connectors specifically for ultrasonic welding.

The Welder

This is one of our Sonobond Ultrasonic Welders, in our Seattle shop. Unlike heat-based methods of welding, it drives a large amount of ultrasonic vibration into the junction between the wire and the plug, fusing them together.

The Welded Banana

Here’s a banana plug body after welding. The surface structure of the wire breaks down during welding, allowing dissimilar metals to fuse. The resulting weld has extremely low contact resistance and high pull strength. Once assembled with its locking collar, the plug can be very securely fastened within a binding post by tightening the collar, driving the splines apart.

The Welded Spade

Our welded spades are cut from sheet copper, and then gold-plated. They’re made with a 25 degree angle between the shaft and spade, but because they’re copper rather than brass, they can be re-bent as needed for your installation.

Item model number ‏ : ‎ BJC4S11MBS20
Date First Available ‏ : ‎ October 22, 2021
Manufacturer ‏ : ‎ Blue Jeans Cable
ASIN ‏ : ‎ B09K4Q77XV
Country of Origin ‏ : ‎ USA

Conventional star-quad configuration: two connectors at each end, joined to a pair of opposite-side conductors. We also offer this cable in bi-wired configurations; search our listings to find those.
The best terminations in the industry: our unique ultrasonic welding process fuses the copper wire directly to the brass banana or spade connector, with no intervening metal, no compression sleeves or setscrews.
Star quad cable configuration reduces EM field around the cable for reduced interaction with other system cabling
Assembled in Seattle, Washington at our own cable shop, using BJC’s proprietary connectors and Sonobond welder.
Our locking banana plugs give the best possible engagement between plug and binding post; advancing the locking collar tightens the splines to the inside of the post.

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