NAGAOKA NM-33
¥ 6,000 (around the late 1960 s?)
Commentary
MM type cartridge with an emphasis on sound quality.
Conventional cartridges pursue characteristics by making the vibration system lighter, but with the NM-33, we are improving the sound quality by repeatedly improving the material of the damper and the angle of the lever, which are the key points of the sound quality.
For dampers in particular, we pursue three elements : viscosity, elasticity, and hardness.
The S/N ratio has been improved by increasing the output from the conventional cartridge.
Precautions when replacing the NM-33 needle
The holder of this cartridge (metal fitting around the lever and damper) has loose contact with the pole piece so that it cannot be deformed by external force, and it is strongly held by the mold (needle knob).
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Model Rating
| Type | MM Type Cartridge |
| Frequency characteristic | 20 Hz to 20 kHz |
| Output voltage | 9 mv (1 khz, 5cm/s) |
| Channel balance | Within ± 2 dB (1 kHz) |
| Channel separation | 20 dB or More (1 kHz) |
| Load resistance | 100k Ω |
| DC resistance | 550 Ω ± 50% |
| Impedance | 2,200 Ω ± 300 Ω |
| Compliance | 5x10-6cm/dyne |
| Needle pressure | 3gr |
| Needle tip | 0.7mil Diamond |
| Dead weight | 9.5gr |
| Mounting Dimensions | JIS and EIA standards |
| Exterior | Black and white finishes |
| External dimensions | Width 16x Height 19.5x Depth 38.5 mm |
| Exchange needle | Deluxe Diamond Needle 33-07 (0.7 mil, ¥ 2,400) Deluxe Diamond Needle 33-05 (0.5 mil, ¥ 2,700) Popular Diamond Needle 33-07 (0.7 mil, ¥ 1,500) Popular Diamond Needle 33-05 (0.5 mil, ¥ 1,700) Ultra C Needle C33-07 (0.7 mil, ¥ 1,000) |
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