Single Ended and Bridged Balanced Types

Bespoke and special internal conductor design of Pulse-HB speaker cable allows it to be configured to maximise performance of the loudspeakers with both single ended and bridged balanced power output design amplifiers. At a flick of a switch, this most innovative and unique feature of Pulse-HB 4mm & 7mm speaker cable, optimises the connection to loudspeakers and ensures unparalleled performance whatever the amplifier type.

At this point it is important to clarify the difference between an amplifier with single ended and one with bridged balanced speaker cable outputs. An amplifier with its Black (–) speaker terminal connected to signal ground is technically known as a Single Ended power output. In single ended configuration, the black terminal is fixed at DC zero – ground. No audio signal should be present on this terminal and it should only act as the ground reference for the wideband audio AC signal that is on the Red (+) terminal.

It is also important to appreciate that the (+) and (–) markings on these terminals DO NOT refer to positive or negative DC voltages. In fact any DC voltage present at the speaker output terminal would only be damaging to the loudspeaker. These colours and markings on the terminals are merely to tell them apart and assist in correct connection of the speaker cables and avoid phase reversal. A bridged balanced amplifier on the other hand is essentially two power amps combined into one to make a single channel. In this configuration the ‘Black’ terminals of the two power amps are joined together and are unused – also known as ‘floating ground’. With one of the amps running 180° out of phase to the other, both remaining terminals then carry audio AC signal where the total amplitude is now twice the original – hence twice the power. Here one of the two ‘Red’ terminals is marked as ‘Black (–)’ it is NOT however at DC zero – ground.

Integral Terminal Jumper (ITJ)

Where the speaker has more than one pair of input terminals, ITJs would allow terminal connections without the necessity of using compromised binding post links. Pulse-HB speaker cable ITJ terminations are available in either 4mm banana or spade Vertere HB reference connector. Any number of ITJs can be incorporated.