Subwoofer Nakamichi NSW-P1204D4
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Subwoofer Nakamichi NSW-P1204D4
Nakamichi NSW-P1204D4 is a 12" subwoofer designed for pronounced, deep and at the same time well-controlled bass. At its heart is a pressed paper cone that offers an ideal combination of low weight, high stiffness and a natural sound character. Thanks to this the cone responds quickly and maintains good clarity of individual bass tones. Its surround is highlighted by red stitching, which not only attractively complements the subwoofer's design but primarily reinforces the highly stressed connection between the cone and the surround. The robust steel basket with a silver protective coating provides the moving assembly with a solid mechanical base and limits unwanted deformation under higher loads. The strong magnetic system is equipped with a rubber protective cover that protects its surface from damage and gives the rear of the subwoofer a clean, premium look. Reliable operation at higher power is ensured by a high-temperature aluminum voice coil, which better resists thermal stress during prolonged loud listening. The subwoofer is designed primarily for a sealed enclosure, where it will offer a tight attack, precise response and good control of the cone. The model features 400 W RMS power, a dual voice coil 4 + 4 Ω and a sensitivity of 89 dB. The pair of coils allows the final wiring to 2 or 8 Ω, so the subwoofer can be easily adapted to the chosen monoblock or multi-channel amplifier.
Main features
- 12" subwoofer for deep, punchy and well-controlled bass.
- Pressed paper cone in competition design.
- Natural sound character and fast cone response.
- Red stitching reinforcing the cone-to-surround connection.
- High-temperature aluminum voice coil.
- Robust steel basket with silver protective coating.
- Rubber protective cover for the magnetic system.
- Optimized for sealed enclosures.
- Recommended internal enclosure volume approximately 25 liters.
- Power 400 W RMS.
- Dual voice coil 4 + 4 Ω.
- Option for final wiring to 2 or 8 Ω.
- Magnetic system weight approximately 1.44 kg.
About the brand
The history of the Nakamichi brand dates back to 1948, when it was founded in Japan by Etsuro Nakamichi. His journey began with the establishment of the Nakamichi Research Corporation in Tokyo, focused on research of sonars, magnets and development solutions for leading brands, government institutions and universities. From the beginning the brand has been built on a scientific approach, a deep understanding of sound and an emphasis on technical precision. A crucial period of growth came in 1972, when Takeshi Nakamichi joined the company and significantly contributed to the development of legendary audio products sold worldwide. Under his leadership, for example, the Nakamichi 1000 model was created, the world's first cassette deck. Thanks to the combination of top-tier sound and timeless design, to which the brand's chief engineer Kozo Kobayashi also contributed, Nakamichi products became icons of their time. Nakamichi remains successful today. Its portfolio offers high-quality products for home and car audio that stand out for thoughtful construction, quality workmanship and excellent sound within their price category.
| Catalog number | NSW-P1204D4 |
| Brand | Nakamichi |
| Links | Official web presentation |
| Subwoofer diameterThe diameter of the subwoofer is indicated on the screw holes. The overall outer diameter of the subwoofer is usually 1-2 cm wider, depending on the size category of the subwoofer. For a 30 cm subwoofer, the outer diameter incl. protective rubber 31.8 cm and in the 25 cm subwoofer it is 26.5 cm incl. protective rubbers. | 12\" (300 mm) |
| RMS powerThe RMS power of the subwoofer is the constant power of continuous use of the subwoofer. If the power is exceeded for a longer period of time, irreversible damage may occur, or to burn out the voice coil of the subwoofer. | 400 W |
| Max. (maximum performancePeak performance , which the subwoofer can play momentarily (approx. 0.5 s), for example when hitting drums in a song. If the maximum power is exceeded, damage can quickly occur, or to burn out the voice coil of the subwoofer. | 2800 W |
| Sensitivity (SPL 2.83V/1m)Subwoofer sensitivity or efficiency. The sensitivity of the subwoofer is given in decibels (dB) and, in simple terms, means that the higher the value, the lower the demands on the power of the amplifier. This is a de facto rating of how a subwoofer converts watts to sound. Sensitivity ratings are in noise level measured at 1 meter from the subwoofer using 1 W (watt of power) or using 2.83 volts at the source at 1 meter. A higher decibel level means the subwoofer is louder with less power. For every 3 dB increase in sensitivity, the subwoofer requires half the power to reproduce the same volume. For example, if an 88 dB subwoofer needs 300 Watts to produce a certain volume, then a subwoofer with 91 dB sensitivity needs only 150 Watts to reach the same efficiency. | 89 dB |
| Sensitivity (SPL 1W/1m)Subwoofer sensitivity or efficiency. The sensitivity of the subwoofer is given in decibels (dB) and, in simple terms, means that the higher the value, the lower the demands on the power of the amplifier. This is a de facto rating of how a subwoofer converts watts to sound. Sensitivity ratings are in noise level measured at 1 meter from the subwoofer using 1 W (watt of power) or using 2.83 volts at the source at 1 meter. A higher decibel level means the subwoofer is louder with less power. For every 3 dB increase in sensitivity, the subwoofer requires half the power to reproduce the same volume. For example, if an 88 dB subwoofer needs 300 watts to produce a certain volume, then a 91 dB subwoofer needs only 150 watts to reach the same efficiency. | 86 dB |
| ImpedanceImpedance - measurement of electrical resistance. When buying a subwoofer, it is very important that everyone make sure that the impedance matches the amplifier that you are connecting to it. For subwoofers with a double voice coil, we recommend following the information in the advice center! Example: A 2 Ohm subwoofer cannot be connected to an amplifier that is only stable up to 4 Ohms. A 4 Ohm subwoofer can easily be used on an amplifier that is stable up to 2 Ohms. Connecting a 4 Ohm subwoofer to an amplifier that is stable up to 4 Ohms also without problems. The most common subwoofer impedance is 4 Ohm. | 4 + 4 Ω |
| Frequency rangeThe ability of the subwoofer to play a signal from the lowest frequency to the highest, or the ability of a subwoofer to faithfully reproduce sound in a specific frequency band. Subwoofers ideally play from 20 - 150 Hz. Professionally: In the frequency range from 40 to 16,000 Hz, the vast majority of fundamental and overtones (harmonics) of all musical instruments are found. We are interested in the course of the radiated sound pressure in this range of frequencies when the loudspeaker system is supplied with constant power. We call this course the frequency characteristic, which tells us the level of radiated sound pressure in decibels (dB) depending on the frequency. The frequency characteristic of a speaker or speaker system can be expressed most succinctly with a graph. Mostly, however, the frequency characteristic is indicated by indicating the maximum tolerance of the sound pressure in the given frequency range, e.g. 50 to 15,000 Hz -+ 6 dB. Since the frequency characteristics of loudspeakers and systems in general are quite uneven, some manufacturers do not even indicate this maximum tolerance of sound pressure in decibels in their catalogs for tactical reasons. Data impoverished in this way is unfortunately worthless. What is valid is that the manufacturer offers a speaker system with a frequency range of 30 to 20,000 Hz, if he is worried about stating the maximum unevenness of the sound pressure in this range, because he can have a tolerance of, for example, +- 20 dB. The unevenness or undulation of the frequency curve in good speaker systems for high-quality music performance should not exceed +-3 dB in the 80 to 12,000 Hz band and +-6 dB in the 40 to 16,000 Hz band. Greater unevenness already depletes or emphasizes certain tonal areas, which can cause audible or even disturbing distortion. The proportion between fundamental tones and higher harmonics also changes, thereby changing the color of the sound, and individual musical instruments as well as the entire musical image sound unnatural. | 31 - 1800 Hz |
| Subwoofer diaphragm materialThe specific material from which the subwoofer membrane is made. | Pressed paper |
| Basket material | Steel |
| Subwoofer mounting depthThe mounting depth of the subwoofer is measured from the bottom edge of the magnet to the bottom edge of the subwoofer's metal or cast basket. | 146 mm |
| Recommended enclosure volumeThe closed enclosure is characterized by a simple construction. Closed enclosures are usually smaller than bass-reflex enclosures, and a special damping fleece is used for their damping. A closed baffle has the advantage of preventing an acoustic short between the front and back radiation of the subwoofer diaphragm. The disadvantage is that the closed enclosure raises the natural resonance frequency of the used subwoofer and thereby also increases the lower limit frequency. This is because the back side of the diaphragm is forced to compress and dilute the air inside the enclosure when the subwoofer is radiating in a closed enclosure. This adds to the inherent stiffness of the subwoofer's oscillation system the stiffness of the air in the closed enclosure. This causes an increase in the stiffness of the oscillating system and thus an increase in the resonant frequency of the entire system: subwoofer -> loudspeaker. The increase in resonant frequency for a given subwoofer is greater, the smaller the volume of air in the closed enclosure. The relatively small volume of air in the closed enclosure acts on the subwoofer as an acoustic spring when radiating the back side of the membrane into the enclosed enclosure. USE: Mainly for quality bass listening in the entire band with an emphasis on detail and accurate reproduction in the lower band. Pros and cons: + pure reproduction + small closets + easier tuning - low level of efficiency in deep bass - loudness only at the cost of enormous deflection of the membrane - a significant acoustic pressure cannot be expected | 25 l |
| Subwoofer voice coil diameterThe larger the diameter of the voice coil, the more load capacity the subwoofer has, in layman's terms. | 50 mm |
| MassSubwoofer weight in kilograms. The weight is usually given net, i.e. without packaging. | 4.9 kg |