🔧 Kuv {. Hais Lus Magnet Cov Khoom Siv & Khoom
| Hlau nplaum hom | Muaj pes tsawg | Khoom Zog Khoom | Thermal ruaj khov | Qhov loj me / qhov hnyav | Tus nqi |
|---|---|---|---|---|---|
| Almnico | Al, ni, co, FE | Nruab nrab | Excellent (Curie >800 Qib) | Loj | High (CO MOB ZOS) |
| Ferrite (Ceramic) | Fe₂o₃ + BA / sr tebchaw | Qi | Excellent (Curie >450 Qib) | Kev Them Nyiaj Loj (Loj Loj) | Qi |
| Neodymium (ndFeb) | ND, FE, B (Lub ntiaj teb tsis tshua muaj) | Siab heev | Pluag (curie ~ 310 degree) | Me | Nruab nrab-siab |
| Teb Chev Chev | Tooj liab windings + DC Fais Fab | Kho tau (tsis muaj kev txwv) | Zoo (nyob ntawm txias) | Loj heev | Siab heev |
Cov yam ntxwv tseem ceeb:
Almnico:
Suab profile: Cov mids sov / nyob rau hauv, qis dua hloov chaw (zoo tagnrho rau vocals / cov hlua) .
Kev qaug zog: Muaj kev txwv siab-zaus ncua ntxiv, cov hwj huam tsis tshua muaj zog (so noo yooj yim) .
Ferrite:
Suab profile: Sib npaug, qis distortion tab sis qis dua rhiab (xav tau cov amps haib) .
Yam uas pab: Nqi-tau zoo, kub-resistant (ib txwm muaj nyob rau hauv tsev audio / pa tshuab).
Neodymium (ndFeb):
Suab profile:
Crystal HighS, cov ncauj lus kom ntxaws (zoo tagnrho rau tweeters) .
Tshwj xeeb hloov chaw, kho cov kev xav .
Qhov ceeb toom tseem ceeb:
Thermal demagnetization: >20% flux loss at >80℃→ bass compression .
Oxidation pheej hmoo: Yuav tsum tau plating (txwv Woofer siv) .
Teb Chev Chev:
Suab profile: Ze-Xoom Hysteresis distortion, txoj cai muaj zog, keeb kwm dub (hi-end) .
Kev qaug zog: External PSU needed, complex/costly (e.g., >$ 1, {000 / chav) .
🎧 II {. hlauet cuam tshuam rau lub suab zoo
Rhiab & efficiency:
Siab duaFlux ntom (b)Zoo tshaj plaws electroacousic hloov dua siab tshiab → + db / w rhiab .
Tus yam ntxwv: NdFeb muaj 10 × B ntawm Ferrite → {{1} dbatin ntau qhov loj.
Zaus teb & distortion:
Ferrite: Tsawg hysteresis → huv ib mids (zoo tagnrho cov tsav tsheb puv) .
NdFeb: Extended highs, but thermal drift causes bass distortion (>10% fr ua haujlwm) .
Damping Control (Qts):
Siab dua b → qis dua QTS → Tumbter bass (txhim kho cov khoom lag luam (txhim kho cov khoom lag luam).
NdFeb muaj cov bass superior bass tswj ntawm kev muaj zog tagnrho .
Dynamic Compression:
Ndfeb thermal demag txo qhov tawg ua kom zoo nkauj → Nonlinear Splib tsis lwj siab ("mos ntses bass") {}}
⚠️ III {{. daim ntawv qhia kev qhia & pitfalls
Cov khoom siv xaiv:
| Daim ntawv thov | Pom zoo cov hlau nplaum | Qho tseem ceeb |
|---|---|---|
| Tweeters | NdFeb | Tsawg tsawg kev cuam tshuam kub; HF Qhia kom zoo dua |
| Woofers (Tsev) | Ferrite | Tshav kub-resistant, nqi-tsim nyog |
| Portable khoom siv hluav taws xob | NdFeb | Compact Qhov loj me, siab rhiab (tws / lub mloog pob ntseg) |
| Hi-kawg subwoofers | Teb Chev Chev | Zero thermal compression, high wynamics |
Cov neeg siv kev ua tsis muaj zog:
❌ "Cov hlau nplaum loj {{0} Zoo dua": Kev Cog Lus NdFeb feem ntau Outperforms berrite .
❌ "NDFeb ib txwm zoo dua": ferrite tej zaum yuav ruaj khov nyob rau hauv woofers yam tsis muaj txias .
🔬 Iv {. Tshaj tawm cov ntsiab lus hlau nplaum
Txheej Txheem Hlau nplaum:
Uniform sau cov txheej txheem txhim kho qhov ntom / smoothness (txo qhov hnyav) .
Tus yam ntxwv: Beyerdynamic "Tesla Tech" Boosts flux efficiency → +30% resolution {}}
Puas sib nqus cov voj voog sib nraus:
Dali SMC (muag hlau hlau sib xyaw ua ke): txo cov eddy dej → nqus plua plum mids .
Dual cov sij hawm luv luv: suppresses midrresses midrange distortion nyob rau hauv ndfeb (THD ↓ 80% @ 3kHz).
Kev Tswj Cov Thermal:
Ndfeb woofers yuav tsum:
Ferroflut Cua Txias (↑ Kev Ua Haujlwm Temp rau 105 degree) .
Txhuas weatsinks (e {. g .}, jbl puas tau).
💎 Xaus: Magnet Xaiv=balancing kev ua tau & zoo
Cov neeg tau txais kev pab: Ferrite muaj tus nqi; Ndfeb txawj ntse nyob rau hauv Tweeters / Portables; tsis txhob uncooled ndfeb woofers .
Audiophiles: Tsom rau kev sib nqus Circuitts (E {{{{} g}!
Lub cav: Rau NDFeb Woofers, Kev Ntsuas Cov Lus Teb ntawm 80 Qib (Klippel pom zoo) .
Cov hlau nplaum cov ntaub ntawv yog lub hauv paus tab sis tsis yog txiav txim siab rau kev txiav txim siab -Sib Nqus Circuit, cua txias, thiabMagnetizationua ib qho kev sib txuas lus triad .}} tsuas yog lawv cov synergy unlect