Robin Hood Zero Folk Hero Series
|威達影音頻道 (Radar Audio YouTube Channel)|
|視听前綫 (Sound & Vision Panorama) Jun 2020|
|音响技術 (Audiotechnique) No.467|
Closely related to our groundbreaking Mythical Creature Series, the Folk Hero Series, comprising two models—Robin Hood and William
Tell—are available with either Solid Perfect-Surface Copper+ or Solid Perfect-Surface Silver conductors. While the Mythical Creatures are all-out assaults on the state of the cable art, the Folk Heroes use all of the same technology with fewer conductors.
Building on a solid base of tried and true AudioQuest technologies, the design team of Garth Powell and Bill Low specifically focused on addressing one of the most vexing issues plaguing speaker cable design: the mismatch between the amplifier’s source impedance and the speaker’s load impedance. By eliminating the speaker cable’s characteristic impedance (ZERO Technology), current compression and distortion of the signal/current transient are significantly reduced. The result is dynamic contrast, transient response, and bass slam that are rendered seemingly without effort, because the cable is not electrically impeding the music.
Like the larger-gauge cables of the Mythical Creatures Series, William Tell and Robin Hood can be used in one of two ways: either employing the ZERO model for Full-Range, or by using the ZERO model in combination with a dedicated BASS cable, as a fully optimized BiWire Combination cable. Like their larger siblings, William Tell and Robin Hood also feature our patented common-mode noise-rejection technology. Along with the Mythical Creatures, these latest AudioQuest speaker cables significantly outperform previous technology at controlling and draining radio-frequency noise.
Zero: No Characteristic Impedance For Uncompressed Current Transfer
The integrity of any audio transient (instantaneous peak-to-peak voltage swing and current) delivered from a power amplifier to a loudspeaker has always been compromised. Whether the amplifier is valve or transistor, regardless of class of operation, the amplifier’s source impedance and loudspeaker’s load impedance are never critically matched. The speaker cable’s characteristic impedance is yet another culprit in a highly compromised non-linear electrical circuit. AudioQuest has always stated that all cables cause damage because the output is never as good as the input. However, by eliminating a speaker cable’s characteristic impedance, AQ’s ZERO Tech is an unprecedented step towards reducing that damage. The result is greater dynamic contrast, better audio transient response, and bass slam that are rendered seemingly without effort because the cable is not electrically restricting (strangling) the music.
Ground-Noise Dissipation (GND)
This extremely effective patented common-mode noise-rejection technology is deployed on the ground path in almost all AQ AC power cables, in addition to in AQ BASS Bass & Midrange speaker cables. The effectiveness of GND compromises audio above 10,000Hz, preventing the dedicated Bass & Midrange cable from being ideal for Full-Range use.
Solid Perfect-Surface Copper+ (PSC+) Conductors
Carbon-Based Linearized Noise-Dissipation System (NDS)
72v Dielectric-Bias System with CARBON-Level Radio-Frequency Trap (DBS)
All insulation is also a dielectric whose electrical properties affect the integrity of the signal. When the insulation is unbiased, dielectric-involvement (absorption and non-linear release of energy back into the signal flow) causes different amounts of time delay (phase shift) for different frequencies and energy levels, which is a significant problem for very time-sensitive multi-octave audio. AudioQuest’s multi-patented DBS creates a strong, stable electrostatic field which saturates and polarizes (organizes) the molecules of the insulation. This minimizes the nonlinear time delays, resulting in clearer sound emerging from a “blacker” background. The inclusion of an RF Trap (a technology developed for AudioQuest’s Niagara Series of power products) in the DBS battery pack further reduces radio-frequency noise. The DBS battery packs will last for many years. A test button and LED allow for the occasional battery check.
Robin Hood Biwiring
When possible, running separate cables to the treble and bass “halves” of a speaker considerably reduces distortion. BiWiring keeps the large magnetic fields associated with bass energy out of the treble cable, allowing the delicate upper frequencies to travel a less magnetically disturbed path, like taking the waves out of the water when you swim. The “Rocket” models of AQ speaker cable have two autonomous internal constructions, facilitating proper BiWiring within a single cable. The “Type” models of AQ speaker cable can be doubled-up, using one for treble and one for bass. However, doubling-up AQ’s ZERO Technology cables can be less of an improvement because of ZERO’s unrestricted wide bandwidth – using two ZERO Full-Range cables can actually allow more RF energy into the amplifier, whereas using a BASS with GND Bass & Midrange cable in combination with a ZERO cable for Treble significantly reduces total RF Noise. The BASS cable’s patented Ground-Noise Dissipation (GND) drains RF energy away from the amplifier’s output. When properly implemented, BiWiring has always been a way to get better performance for the same or less money. With GND, the improvements from BiWiring are considerably more dramatic. Robin Hood BASS with GND is an ideal cable for the Bass and Midrange inputs of either a BiWireable or TriWireable loudspeaker when used in combination with Robin Hood ZERO or Robin Hood SILVER Full-Range cables.
Folk Hero Cold-Welded Terminations
Folk Hero cables are Cold-Welded to AudioQuest’s extremely pure Red Copper Spades or Bananas. The bare copper is submerged (hung) in a vat of pure silver instead of being tumbled in a lower-grade solution. AudioQuest speaker breakouts and plug casings are not metal in order to not disrupt the signal’s magnetic field, and to not induce RF Noise into the conductors.