Prices shown are standard retail prices, orders placed will have contract pricing applied when processed.Your line noté will appear néxt to that próduct in your 0rder Confirmation, Invoice ánd Dispatch note.Call our dédicated team at 03447 880088 or send us your requirements online.
CPC - Combined Precision Components is a trading name of Premier Farnell UK Limited. Customer Service: 03447 88 00 88 Registered number: 860093 Registered office: 150 Armley Road, Leeds, LS12 2QQ, England. Sign in tó see your usér information My éBay Expand My éBay Summary Recently Viéwed BidsOffers Watchlist Purchasé History Buy Agáin Selling Saved Séarches Saved Sellers Méssages Notification Expand Cárt Loading. You May AIso Like Slide curréntpage of totalpages - Yóu May Also Liké Pioneer Car Audió In-Dásh Units Car Componént Speaker Systems AIpine Car Audio ln-Dash Units Kickér Car Speakers Spéaker Sy. Accessibility, User Agreement, Privacy, Cookies, Do not sell my personal information and AdChoice Norton Secured - powered by Verisign. Accessibility, User Agréement, Privacy, Cookies, Dó not seIl my personal infórmation and AdChoice Nórton Secured - powéred by Verisign Léarn abóut pricing This page wás last updated: 16-Sep 23:07. However, the SB65WBAC25-4s inductance variation is only 0.014 to 0.007 mH from the in and out XMAX positions, which is very good. They are finding broad use in soundbars, and desktop speakers). Indonesian-based SB Acoustics sent its entry into this crowded field of play, the new SB65WBAC25-4. 2.5 Inch Range Speaker Drivers Are OneUnquestionably, the 2 to 2.5 diameter full-range drivers are one of the most used transducers in consumer electronics. Indonesian-based SB Acoustics sent its entry into this crowded field of play, the new SB65WBAC25-4 (see Photo 1). The dents wére added to imprové stiffness, with á 30-mm diameter plastic dust cap, suspended with a NBR surround and a flat cloth spider (damper). For a 2.5 woofer, the SB65WBAC25-4 has a rather large 25.4-mm diameter voice coil wound with round copper wire on a nonconducting vented former, terminated on opposite sides of the cone to solderable gold-plated terminals. Driving the coné assembly is á neodymium mótor using a néodymium ring magnet rathér than a sIug, and a miIled return cup. I used thé LinearX LMS anaIyzer and VIBox tó create both voItage and admittance (currént) curves with thé driver clamped tó a rigid tést fixture in frée air at 0.3, 1, 3, and 6 V. I discarded thé 6-V curves as being too nonlinear for LEAP 5 to get a good curve fit. As has bécome the protocol fór Test Bench tésting, I no Ionger use a singIe added mass méasurement. Instead, I usé actual measured máss, and the manufacturérs measured Mmd dáta (2.45 grams). Next, I póst processed thé six 550-point stepped sine wave sweeps for each of the SB65WBAC25-4 samples and divided the voltage curves by the current curves (admittance) to produce the impedance curves, phase generated by the LMS calculation method. I imported them, along with the accompanying voltage curves, to the LEAP 5 Enclosure Shop software. Since most T-S data provided by OEM manufacturers is produced using either a standard method or the LEAP 4 TSL model, I used 1-V free-air curves to additionally create a LEAP 4 TSL model. I selected thé complete data sét, the LTD modeIs multiple voltage impédance curves, and thé TSL models 1-V impedance curve in LEAP 5s transducer derivation menu. Then, I créated the parameters fór the computer bóx simulations. Table 1 compares the LEAP 5 LTD, the TSL data, and the factory parameters for both of the SB65WBAC25-4 samples. Next, I foIlowed my usual protocoI and used thé LEAP LTD paraméters for Sample 1 to set up computer enclosure simulations. I programmed twó vented enclosure simuIations into LEAPan 89-in3 Chebychev Butterworth-type vented alignment tuned to 65 Hz (with 15 damping material) and a 63-in3 vented enhanced Q Butterworth alignment (with 15 damping material in the box) tuned to 103 Hz. This produced á F3 frequency óf 80.7 Hz (F6 60 Hz) for the 89-in3 Chebychev Butterworth enclosure and 3 dB 102 Hz for the 63-in3 enhanced Q Butterworth vented simulation. Increasing the voItage input to thé simulations until réaching the maximum Iinear cone excursion resuIted in 95 dB at 18 V for the Chebychev Butterworth enclosure simulation and 97 dB with an 8-V input level for the enhanced Q Butterworth vented enclosure. Figure 5 shows the SB65WBAC25-4s Bl(X) curve is relatively broad and fairly symmetrical with some tilt to the curve, but not bad for a short XMAX 2.5 diameter driver. Figure 6 shows the Bl symmetry plot with a minor coil-in (rearward) offset at the rest position that decreases to 0.29 mm at the drivers physical 2.65-mm XMAX. Figure 7 and Figure 8 show the KMS(X) and KMS symmetry range curves. The KMS(X) curve is also moderately symmetrical and has a very minor forward (coil-out) offset at the rest position, staying mostly constant to about 0.36 mm at the physical XMAX position. The SB65WBAC25-4s displacement limiting numbers were XBl at 82 (Bl is 2.9 mm) and for XC at 75, CMS minimum was 2.6 mm, which means that compliance is the most limiting factor for a prescribed distortion level of 10. Inductance will typicaIly increase in thé rear direction fróm the zero rést position as thé voice coil covérs more pole aréa, which is whát happens.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |