phono cartridge การใช้

• The Decca phono cartridges were a unique design, with fixed magnets and coils.
• Shure engineers introduced several key phono cartridge design concepts.
• Joseph went on to invent the first stereo moving coil phono cartridge while building up Grado s cartridge lineup.
• Not only do all CD players not sound alike, but they differ as wildly as phono cartridges ever did.
• Improvements included higher compliance, lower distortion levels, phono cartridges with a significantly higher frequency range, and new vinyl compounds for records.
• The preamp attached to the phono cartridge has a complementary filter boosting those low frequencies following the standard RIAA equalization curve.
• The V-15 Type II ( introduced in 1966 ) was the first computer-designed phono cartridge and the first to feature a flip-action built-in stylus guard.
• In 1960, John Cage completed his noise composition " Cartridge Music " for phono cartridges with foreign objects replacing the'stylus'and small sounds amplified contact microphones.
• The phono stage is made up of dedicated boards, of which there were three variants matched to gain characteristics and electrical loading from different phono cartridges.
• A typical high-performance CD-4 system would include a turntable with a CD-4 compatible phono cartridge, a CD-4 demodulator, a discrete four-channel amplifier, and four identical full-range loudspeakers.
• While this system had some advantages over the standard crystal phono cartridge of the time, it was unreliable and is today a very difficult unit to restore.
• Linn were distributors for Grace and Supex Corporation at the time, and thus the Grace G-707 tone arm and Supex SD900 and SD1000 phono cartridges were also frequently partners for the deck.
• Dynaco became a wholly owned subsidiary of Tyco, Inc . in 1969 . David Hafler remained with the company a few years longer, but left in 1974 to join Ortofon, manufacturer and importer of high-end phono cartridges.
• It is caused by imperfect bearings, uneven motor windings, vibrations in driving bands in some turntables, room vibrations ( e . g ., from traffic ) that is transmitted by the turntable mounting and so to the phono cartridge.
• I believe these amplifiers do not have a constant gain vs . frequency; some frequencies are boosted more than others to compensate for the characteristics of magnetic phono cartridges .-- talk ) 19 : 26, 19 December 2009 ( UTC)
• The origins of the audio company date back to the early 1950s, when Joseph left Tiffany & Company and Sherman Fairchild to start crafting phono cartridges at his kitchen table in Brooklyn, NY . After seeing a market for cartridges, he went around the corner and closed the existing Grado fruit shop, opening up Grado Laboratories.
• Instead of adding in another circuit known as a head amp to increase the gain for Moving Coil cartridges, the IV took advantage of its passive RIAA curve design and simply increased the gain of the input amplification stage by an additional 30dB . All future preamplifiers pre-1997 had this unique circuit that reduced the circuitry in the path of the phono cartridge.