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LYRA DELOS

LYRA DELOS

An analog LP played back with an MC cartridge can sound exceptionally good. Normally, the more cost put into the cartridge, the better the sound. However, sometimes what is required is not more cost but more clever engineering, as with the Lyra Delos.

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A major problem with most cartridges is that the signal coils are located so that applying normal tracking force restricts performance. The reason is that the cartridge's signal coils should have the same angle as the magnetic circuit when the tracking force for playback is applied, but are nearly always designed so that applying normal tracking force pushes the signal coils out of alignment with the magnetic circuit. This impairs the sensitivity and linearity of the coils, and reduces the quality of sound.

The Delos solves this problem with a new body structure and pre-angled damping system. The pre-angled dampers work together with the angle of the body structure so that, when tracking force is applied, the signal coils are optimally aligned with the magnet circuit. The Delos also has a microridge stylus for outstanding tracking, a non-parallel solid metal body for low resonances, and nude construction for greater clarity. The result is clearly improved sound quality, particularly resolution, dynamic range, transient impact and immediacy.

» Tekniske data

Designer: Jonathan Carr
Builder: Yoshinori Mishima (final build, testing), Akiko Ishiyama (primary build)
Type: Medium weight, medium compliance, low-impedance moving coil cartridge
Stylus: Namiki microridge line-contact nude diamond stylus (2.5um x 75um), surface-mounted
Cantilever system: Solid boron rod with short one-point wire suspension, directly mounted into cartridge body
Coils: 3-layer deep, 6N high-purity copper, square-shaped high-purity iron former, 6.3ohm self-impedance, 9.5uH inductance
Output voltage: 0.6mV@5cm/sec., zero to peak, 45 degrees (CBS test record, other test records may alter results)
Frequency range: 10Hz ~ 50kHz
Channel separation: 30dB or better at 1kHz
Compliance: Approx. 12 x 10-6cm/dyne at 100Hz
Vertical tracking angle: 20 degrees
Cartridge body: One-piece machining from solid 6063 aluminum billet, partially non-parallel shaping, body threaded directly for mounting screws
Cartridge mounting screws: 2.6mm 0.45 pitch JIS standard
Distance from mounting holes to stylus tip: 9.5mm
Cartridge weight (without stylus cover): 7.3g
Recommended tracking force: 1.7g ~ 1.8g (1.75g preferred)
Recommended load directly into MC phono input: 97.6ohm ~ 806ohm (determine by listening, or follow detailed guidelines in user manual)
Recommended load via step-up transformer: 5 ~15ohm (step-up transformer's output must be connected to 10kohm ~ 47kohm MM-level RIAA input, preferably via short, low-capacitance cable)
Recommended tonearms: High-quality pivoted or linear (tangential) tonearms with rigid bearing(s), adjustable anti-skating force, preferably VTA adjustment

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