Set of 2 ★ RADIAN 1292-8 8Ω aluminum diaphragm for TAD2 inch driver
| Auction ends | over |
| Bids | no |
| Current price | ¥140,000 $961 |
| Start price | ¥140,000 $961 |
| Buy-now | ¥140,000 $961 |
| Consumption tax | 0% included |
| Seller | kozystudio_yokohama +1577 |
| Condition | New |
| Start time | 2024-04-29T21:46:38+09:00 |
| End time | 2024-05-02T21:46:38+09:00 |
| Auto-prolongation | Turned off |
| Lot number | s1113700356 |
| Seller position | Kanagawa Prefecture |
| ★ Radian 1292-8 ★ | ||
| quotient Goods Theory Ming | Tad 2 inch driver diaphragm Tad 4001, 4002, 4003It is a diaphragm for 2 -inch slot drivers.. After all of the radian diaphragms were actually sounded for 20 minutes with 80 % of the allowable input, the operation was confirmed, one piece was measured, and the frequency characteristics were measured, and that it was within the reference value. It is shipped. Impedance: 8Ω Tolerance input: 60W (continuous) (It will be 120W in general display. ) The price is 2 pairs, including consumption tax.. If you wish only one, please contact us from [Question].. The USA list is $ 472 per sheet (professional price). RadioThe made diaphragm is made by molding all kinds of aluminum alloy plates according to the tactic of spatula and squeezing.. The diaphragm by the spatula aperture has a thinner center part and thicker, as shown in the figure (above), so the intensity is increased even with the same quality, making it an optimal shape for the diaphragm.. The central part of the diaphragm with a general stamp type becomes thicker as shown in the figure (below).. This shape brings a big difference in terms of resonance. Pull the rubber string with both hands and imagine the action of raising and lowering both hands as it is.. Rubber strings are diaphragm, both hands are equivalent to voice coil. In the stamp type, it can be said that the center is heavy because the center is heavy.. And this weight moves unrelated to the movement of both hands.. This is resonance. Resonance not only worsens frequency characteristics, but also causes congestion distortion.. In the spatula aperture, the rubber string is equivalent to a tightly stretched state, and the diaphragm faithfully follows the movement of the voice coil..RadioThe made diaphragmFFTThe measurement with the measurement of this has been demonstrated that this small amount of conversion distortion has been proven.. (See below) This good sound quality is also a role in adopting the edges of Mylar Film without unnecessary reflections and resonance.. In recent years, the natural sound quality of aluminum, which is different from beryllium, which has a negative effect on titanium and environment, has been re -evaluated.. Recommended for those who are dissatisfied with the sound of the new driver. Since the frequency characteristics vary depending on the horn, the power response is displayed by covering the driver's slot with a plain tube.. In general horns, it may be flat on the axis because of the beauty of the beam, but in the case of a uniform horn, it is closer to this characteristics.. TAD's 2 -inch driver's diaphragm is almost the same as the diaphragm for JBL 2482.. * The difference in appearance is that the JBL is the type that stops the lead wire with screws, while the TAD uses a pressure terminal.. * The TAD diaphragm has a protection net, but this is not only to prevent damaged diaphragms, but also to prevent it from directly touching.. It is recommended that you wear rubber gloves used in the case of dust -proof masks, underwater fading, surgery, etc. at the time of replacement.. The difference between 375 and 2440 is the size of the ring for holding the diaphragm and the position of the mounting screw, but the diaphragm itself is the same.. 1292 has the same basic design as the original Tad's original diaphragm, but in the case of TAD, the interval between the diaphragm and the phase plug is reduced, so that the efficiency of the ultra -high range is increased, so it is large near the horn cut -off frequency. When the signal is entered, the amplitude increases, making it easier for the diaphragm to hit the phase plug.. In the case of a beryllium edge, the amplitude tends to be restricted because it is hard, but in the case of Radian's Mylar Erdges, the amplitude may increase by entering high -power signals due to excellent linearity. there is. For this reason, Radian recommends expanding the interval between diaphrams and phase plugs with the attached spacer to enable a moderate clearance, but if you are listened to it in ordinary households, 0.01W will not be included. Because there are many, there may be no problem even if it is attached directly without a spacer.. Without a spacer, the efficiency of 12kHz or more will be high, so if you do not sound at a loud volume like a concert or recording studio, please try it without a spacer.. Detail isThis site Please see. | |
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The 5th image above
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This chart is the characteristic of harmonic distortion when a 2kHz (voltage: 2V) sine wave is entered into the JBL2450J.. |
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This is the same driver and only a diaphragmRadian 1245-16It is a characteristic when replaced with. You can see that the 2KHz output has been increased by 5DB, but the second/third high -tier wave distortion of 4kHz/6kHz has dropped dramatically.. Moreover, the ultra -high -conditioning distortion, which is particularly problematic among audio and enthusiasts, is kept to a low level that cannot be detected at all.. Some people seem to feel that there is no treble despite the fact that the sound pressure is actually rising, but most places are misunderstood as high -tone distortion components as high notes. Once the calibration has been completed and the sound with low distortion becomes the standard, it seems that it will never be able to return to the beginning again.. |
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The 7th image above
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This chart is the characteristic of a transformation distortion when 2KHz and 2.5 kHz sine waves are entered on the JBL2450J.. |
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The 8th image above
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This is the same driver and only a diaphragmRadian 1245-16It is a characteristic when replaced with. I think you can see that the distortion due to the conversion has dropped dramatically, even though the output in 2kHz/2.5kHz has increased.. This congestion distortion is different from the overtone components emitted from instruments, etc., so it has a more adverse effect than harmonics distortion.. |
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