{"id":1715,"date":"2010-07-15T09:49:26","date_gmt":"2010-07-15T02:49:26","guid":{"rendered":"http:\/\/www.saigonstereo.com\/home\/?p=1715"},"modified":"2015-07-17T12:20:34","modified_gmt":"2015-07-17T05:20:34","slug":"acapella-am-huong-tu-cong-nghe-doc-dao","status":"publish","type":"post","link":"https:\/\/www.saigonstereo.com\/home\/acapella-am-huong-tu-cong-nghe-doc-dao\/","title":{"rendered":"Acapella \u2013 \u00c2m h\u01b0\u1edfng t\u1eeb c\u00f4ng ngh\u1ec7 \u0111\u1ed9c \u0111\u00e1o"},"content":{"rendered":"

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HFVN – V\u1edbi nh\u1eefng ng\u01b0\u1eddi ch\u01a1i \u00e2m thanh hi-end, c\u00f3 l\u1ebd Acapella l\u00e0 m\u1ed9t trong nh\u1eefng c\u00e1i t\u00ean mang l\u1ea1i nhi\u1ec1u \u1ea5n t\u01b0\u1ee3ng nh\u1ea5t. Trong b\u1ea5t c\u1ee9 tri\u1ec3n l\u00e3m n\u00e0o, nh\u1eefng b\u1ed9 loa cao c\u1ea5p c\u1ee7a Acapella lu\u00f4n thu h\u00fat \u0111\u00f4ng \u0111\u1ea3o ng\u01b0\u1eddi xem b\u1edfi thi\u1ebft k\u1ebf \u0111\u1ed9c \u0111\u00e1o v\u00e0 \u00e2m thanh xu\u1ea5t s\u1eafc. V\u1edbi c\u00f4ng ngh\u1ec7 loa k\u00e8n v\u00e0 treble ion-plasma, Acapella l\u00e0 m\u1ed9t trong s\u1ed1 r\u1ea5t \u00edt h\u00e3ng loa s\u1edf h\u1eefu nh\u1eefng b\u00ed quy\u1ebft mang l\u1ea1i \u00e2m thanh c\u1ef1c k\u1ef3 tinh t\u1ebf v\u00e0 s\u1ed1ng \u0111\u1ed9ng cho ng\u01b0\u1eddi nghe.<\/p>\n

Acapella l\u00e0 h\u00e3ng loa c\u00f3 l\u1ecbch s\u1eed tr\u00ean 30 n\u0103m v\u1edbi v\u0103n ph\u00f2ng thi\u1ebft k\u1ebf v\u00e0 nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t \u0111\u1eb7t t\u1ea1i Duisburg (\u0110\u1ee9c). T\u00ean tu\u1ed5i c\u1ee7a Acapella g\u1eafn li\u1ec1n v\u1edbi hai nh\u00e0 \u0111\u1ed3ng s\u00e1ng l\u1eadp l\u00e0 Alfred Rudolph v\u00e0 Hermann Winters. N\u0103m 1961, khi \u0111ang l\u00e0 sinh vi\u00ean tr\u01b0\u1eddng ki\u1ebfn tr\u00fac, Alfred Rudolph \u0111\u00e3 t\u1ef1 thi\u1ebft k\u1ebf v\u00e0 l\u00e0m ra b\u1ed9 loa th\u00f9ng 4 \u0111\u01b0\u1eddng ti\u1ebfng v\u1edbi \u00e2m thanh h\u1ea5p d\u1eabn. Th\u1ebf nh\u01b0ng sau khi nghe nhi\u1ec1u b\u1ed9 loa k\u00e8n c\u1ed5, b\u1ecb h\u00fat h\u1ed3n b\u1edfi \u00e2m thanh r\u1ed9ng v\u00e0 s\u1ed1ng \u0111\u1ed9ng c\u1ee7a ch\u00fang, \u00fd t\u01b0\u1edfng ch\u1ebf t\u1ea1o loa k\u00e8n hi\u1ec7n \u0111\u1ea1i lu\u00f4n nung n\u1ea5u trong suy ngh\u0129 c\u1ee7a Rudolph. N\u0103m 1976, Alfred Rudolph g\u1eb7p Hermann Winters, l\u1eadp t\u1ee9c c\u1ea3 hai c\u1ea3m th\u1ea5y c\u00f3 c\u00f9ng ni\u1ec1m \u0111am m\u00ea v\u1edbi \u00fd t\u01b0\u1edfng loa k\u00e8n. K\u1ebft qu\u1ea3, Acapella Audio Arts \u0111\u00e3 ch\u00ednh th\u1ee9c ra \u0111\u1eddi n\u0103m 1978. A.Rudolph v\u00e0 H.Winters quy\u1ebft t\u00e2m theo \u0111u\u1ed5i m\u1ee5c \u0111\u00edch ch\u1ebf t\u1ea1o ra nh\u1eefng b\u1ed9 loa k\u00e8n \u0111\u1eb9p nh\u01b0 nh\u1eefng t\u00e1c ph\u1ea9m ngh\u1ec7 thu\u1eadt, c\u00f3 \u00e2m thanh c\u1ef1c nhanh, trung th\u1ef1c v\u00e0 s\u1ed1ng \u0111\u1ed9ng nh\u01b0 nghe nh\u1ea1c th\u1eadt.<\/p>\n

TI\u00caN PHONG TRONG C\u00d4NG NGH\u1ec6 \u0110\u1ed8C \u0110\u00c1O<\/strong>
\nN\u00f3i \u0111\u1ebfn Acapella, c\u00f3 l\u1ebd b\u1ea5t c\u1ee9 ng\u01b0\u1eddi ch\u01a1i audio hi-end n\u00e0o c\u0169ng bi\u1ebft \u0111\u1ebfn hai c\u00f4ng ngh\u1ec7 \u0111\u1ed9c \u0111\u00e1o \u0111\u00e3 l\u00e0m n\u00ean danh ti\u1ebfng cho h\u00e3ng loa, \u0111\u00f3 l\u00e0 c\u00f4ng ngh\u1ec7 l\u00e0m k\u00e8n loa h\u00ecnh b\u00e1n c\u1ea7u v\u00e0 c\u00f4ng ngh\u1ec7 loa treble ion-plasma.<\/p>\n

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Qua nghi\u00ean c\u1ee9u r\u1ea5t nhi\u1ec1u loa k\u00e8n kh\u00e1c nhau, Acapella th\u1ea5y r\u1eb1ng: \u0111\u1ec3 \u0111\u1eb7t \u0111\u01b0\u1ee3c \u0111\u1ed9 \u0111\u1ed9ng cao, \u00e2m thanh nhanh v\u00e0 \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c t\u00ednh chi ti\u1ebft, s\u00f4i \u0111\u1ed9ng, k\u00e8n loa theo k\u1ebft c\u1ea5u \u0111\u01b0\u1eddng cong b\u00e1n c\u1ea7u (spherical) m\u1edbi l\u00e0 thi\u1ebft k\u1ebf t\u1ed1i \u01b0u. K\u1ebft h\u1ee3p v\u1edbi vi\u1ec7c nghi\u00ean c\u1ee9u v\u1ec1 v\u1eadt li\u1ec7u ch\u1ebf t\u1ea1o, Arudolph v\u00e0 H.Winters \u0111\u00e3 tr\u1ea3i qua h\u00e0ng tr\u0103m th\u00ed nghi\u1ec7m kh\u00e1c nhau \u0111\u1ec3 \u0111\u1ecbnh h\u00ecnh k\u1ebfu c\u1ea5u chu\u1ea9n c\u1ee7a \u0111\u1ed9 m\u1edf h\u1ecdng loa, \u0111\u1ed3ng th\u1eddi t\u00ecm ra v\u1eadt li\u1ec7u polymer t\u1ed1i \u01b0u cho ch\u1ebf t\u1ea1o k\u00e8n loa. Nghi\u00ean c\u1ee9u c\u1ee7a hai \u00f4ng \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1ea5p b\u1eb1ng s\u00e1ng ch\u1ebf v\u00e0 \u1ee9ng d\u1ee5ng cho t\u1ea5t c\u1ea3 c\u00e1c b\u1ed9 loa cao c\u1ea5p c\u1ee7a Acapella.<\/p>\n

K\u1ebft c\u1ea5u k\u00e8n loa b\u00e1n c\u1ea7u kh\u00f4ng ch\u1ec9 ph\u00f9 h\u1ee3p v\u1edbi trung \u00e2m, m\u00e0 c\u00f2n \u0111\u01b0\u1ee3c Acapella \u00e1p d\u1ee5ng cho t\u1ea5t c\u1ea3 c\u00e1c d\u1ea3i t\u1ea7n. Trong nh\u1eefng b\u1ed9 loa cao c\u1ea5p nh\u1ea5t nh\u01b0: Spharon, Spharon Excalibur, Triolon Excalibur\u2026 thi\u1ebft k\u1ebf loa k\u00e8n \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho c\u00e1c d\u1ea3i t\u1ea7n t\u1eeb treble cho \u0111\u1ebfn nh\u1eefng d\u1ea3i t\u1ea7n th\u1ea5p nh\u01b0 trung tr\u1ea7m, th\u1eadm ch\u00ed \u0111\u1ebfn c\u1ea3 d\u1ea3i tr\u1ea7m nh\u01b0 trong ki\u1ec7t t\u00e1c \u0111\u1ea7u b\u1eb1ng Spharon. V\u1edbi c\u00e1c model nh\u1ecf h\u01a1n, k\u1ebft c\u1ea5u h\u1ecdng k\u00e8n \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng cho c\u00e1c loa tre-ble v\u00e0 loa trung \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o gi\u00e1 th\u00e0nh c\u1ee7a loa \u1edf m\u1ee9c h\u1ee3p l\u00fd.<\/p>\n

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D\u00f9 c\u00f4ng ngh\u1ec7 loa k\u00e8n ki\u1ec3u b\u00e1n c\u1ea7u kh\u00e1 \u0111\u1ed9c \u0111\u00e1o, nh\u01b0ng c\u00f3 l\u1ebd c\u00f4ng ngh\u1ec7 ch\u1ebf t\u1ea1o loa trele ion-plasma c\u1ee7a Acapella m\u1edbi \u0111\u00fang ngh\u0129a l\u00e0 c\u00f4ng ngh\u1ec7 duy nh\u1ea5t trong th\u1ebf gi\u1edbi loa hi-end. Thi\u1ebft k\u1ebf c\u1ee7a loa treble ion-plasma \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng tr\u00ean c\u01a1 s\u1edf l\u00fd thuy\u1ebft v\u1ec1 s\u1ef1 ph\u00f3ng \u0111i\u1ec7n plasma trong kh\u00f4ng kh\u00ed d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u c\u00f3 \u0111i\u1ec7n \u00e1pv\u00e0 t\u1ea7n s\u1ed1 r\u1ea5t cao. N\u1ebfu \u0111\u01b0a m\u1ed9t d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i \u0111i qua d\u00e2y d\u1eabn, ch\u00fang ta s\u1ebd c\u00f3 d\u00f2ng \u0111i\u1ec7n t\u1eed (electron) \u1ed5n \u0111\u1ecbnh ch\u1ea1y qua \u0111o\u1ea1n d\u00e2y, \u0111\u00f3 l\u00e0 d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u. T\u01b0\u01a1ng t\u1ef1 nh\u01b0 v\u1eady, n\u1ebfu trong d\u00e2y d\u1eabn c\u00f3 d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u, th\u00ec c\u00e1c \u0111i\u1ec7n t\u1eed s\u1ebd chuy\u1ec3n \u0111\u1ed9ng qua l\u1ea1i li\u00ean t\u1ee5c. T\u1ed1c \u0111\u1ed9 chuy\u1ec3n \u0111\u1ed9ng ph\u1ee5 thu\u1ed9c v\u00e0o t\u1ea7n s\u1ed1 d\u00f2ng \u0111i\u1ec7n \u0111\u00f3. Qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a \u0111i\u1ec7n t\u1eed n\u00e0y t\u1ea1o n\u00ean \u0111i\u1ec7n tr\u01b0\u1eddng v\u00e0 t\u1eeb tr\u01b0\u1eddng, t\u1eeb \u0111\u00f3 h\u00ecnh th\u00e0nh n\u00ean \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng. \u1ede t\u1ea7n s\u1ed1 r\u1ea5t th\u1ea5p, \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng ch\u1ec9 g\u00f3i g\u1ecdn trong ph\u1ea1m vi b\u00ean trong d\u00e2y d\u1eabn. Nh\u01b0ng khi l\u00ean \u0111\u1ebfn t\u1ea7n s\u1ed1 cao h\u01a1n, ch\u00fang b\u1eaft \u0111\u1ea7u lan t\u1ecfa ra b\u1ec1 m\u1eb7t c\u1ee7a d\u00e2y, g\u00e2y n\u00ean hi\u1ec7u \u1ee9ng m\u1eb7t ngo\u00e0i (c\u00f2n g\u1ecdi l\u00e0 skin effect). Khi d\u1ea1t \u0111\u1ebfn t\u1ea7n s\u1ed1 cao nh\u1ea5t \u0111\u1ecbnh, \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng s\u1ebd t\u00e1ch kh\u1ecfi s\u1ee3i d\u00e2y, \u0111\u00f3 l\u00e0 nguy\u00ean l\u00fd c\u0103n b\u1ea3n c\u1ee7a qu\u00e1 tr\u00ecnh ph\u00e1t s\u00f3ng radio v\u00e0 s\u1ee3i d\u00e2y khi \u1ea5y \u0111\u00f3ng vai tr\u00f2 c\u1ee7a m\u1ed9t \u0103ng-ten ph\u00e1t s\u00f3ng. \u1ede t\u1ea7n s\u1ed1 c\u1ee7a s\u00f3ng radio (kho\u1ea3ng 30MHz), n\u1ebfu m\u1ed9t v\u1eadt d\u1eabn \u0111i\u1ec7n c\u00f3 hi\u1ec7u \u0111i\u1ec7n th\u1ebf r\u1ea5t cao, tr\u01b0\u1eddng \u0111i\u1ec7n t\u1eeb c\u00f3 th\u1ec3 t\u01b0\u01a1ng t\u00e1c c\u1ef1c m\u1ea1nh v\u1edbi m\u00f4i tr\u01b0\u1eddng \u0111\u1ebfn m\u1ee9c kh\u00f4ng kh\u00ed \u1edf xung quanh b\u1ecb ion h\u00f3a v\u00e0 b\u1ecb nung n\u00f3ng \u0111\u1ed9t ng\u1ed9t \u0111\u1ebfn m\u1ee9c tr\u1edf th\u00e0nh tr\u1ea1ng th\u00e1i plasma. Tia l\u1eeda t\u1ea1o b\u1edfi plasma do kh\u00f4ng kh\u00ed b\u1ecb ion h\u00f3a \u0111\u00f3 th\u01b0\u1eddng ph\u00e1t ra \u1edf nh\u1eefng \u0111i\u1ec3m nh\u1ecdn c\u1ee7a v\u1eadt d\u1eabn v\u00e0 t\u1ecfa s\u00e1ng m\u00e0u t\u00edm h\u1ed3ng, \u0111\u1ed3ng th\u1eddi t\u1ea1o ra nh\u1eefng ti\u1ebfng k\u00eau nh\u1ecf b\u1edfi c\u00e1c ph\u1ea7n t\u1eed kh\u00f4ng kh\u00ed li\u00ean t\u1ee5c b\u1ecb s\u1ee9c n\u00f3ng nhi\u1ec1u ngh\u00ecn \u0111\u1ed9 c\u1ee7a plasma l\u00e0m gi\u00e3n n\u1edf li\u00ean t\u1ee5c. N\u1ebfu d\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u \u0111\u01b0a v\u00e0o t\u1ea1o plasma c\u00f3 t\u1ea7n s\u1ed1 c\u00e0ng cao, th\u00ec c\u00e1c \u00e2m thanh n\u1ec1n t\u1ea1o b\u1edfi cung l\u1ee7a plasma n\u00e0y s\u1ebd c\u00e0ng kh\u00f3 nghe th\u1ea5y. \u0110\u1ec3 t\u1ea1o \u0111\u01b0\u1ee3c \u201ccung l\u1eeda\u201d plasma, c\u1ea7n c\u00f3 n\u0103ng l\u01b0\u1ee3ng \u0111\u1ea7u v\u00e0o kh\u00e1 l\u1edbn. K\u00edch th\u01b0\u1edbc c\u1ee7a cung l\u1ee7a plasma c\u00f3 th\u1ec3 thay \u0111\u1ed5i g\u1ea7n nh\u01b0 ngay l\u1eadp t\u1ee9c ch\u1ec9 b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i hi\u1ec7u \u0111i\u1ec7n th\u1ebf \u0111\u01b0a v\u00e0o hai \u0111i\u1ec7n c\u1ef1c \u0111\u1ec3 g\u1ea7n nhau. S\u1ef1 thay \u0111\u1ed5i c\u1ee7a cung l\u1eeda plasma s\u1ebd l\u00e0m cho l\u1edbp kh\u00f4ng kh\u00ed b\u1ecb nung n\u00f3ng \u1edf v\u00f9ng quanh cung l\u1ee7a s\u1ebd thay \u0111\u1ed5i theo. T\u1eeb \u0111\u00f3, s\u1ef1 gi\u00e3n n\u1edf c\u1ee7a kh\u00f4ng kh\u00ed c\u0169ng thay \u0111\u1ed5i t\u01b0\u01a1ng \u1ee9ng, t\u1ea1o ra c\u00e1c \u00e2m thanh nghe th\u1ea5y \u0111\u01b0\u1ee3c.<\/p>\n

Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y ch\u00ednh l\u00e0 nguy\u00ean l\u00fd c\u0103n b\u1ea3n c\u1ee7a thi\u1ebft k\u1ebf loa treble ion-plasma (c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 loa trele ion ho\u1eb7c treble plasma). B\u1edfi \u00e2m thanh t\u1ea1o ra nh\u1edd tia l\u1eeda plasma, n\u00ean loa treble ho\u00e0n to\u00e0n kh\u00f4ng c\u00f3 cu\u1ed9n d\u00e2y \u0111\u1ed9ng, kh\u00f4ng c\u00f3 m\u00e0ng loa. Trong c\u00e1c loa treble \u0111om \u0111i\u1ec7n\u00a0 \u0111\u1ed9ng hay treble ribbon (treble m\u00e0nh) d\u00f9 l\u00e0 r\u1ea5t nh\u1eb9, nh\u01b0ng c\u00e1c cu\u1ed9n d\u00e2y \u0111om loa lu\u00f4n c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng nh\u1ea5t \u0111\u1ecbnh (kho\u1ea3ng v\u00e0i gram \u0111\u1ebfn v\u00e0i ch\u1ee5c gram)\u2026 Do \u0111\u00f3, ch\u00fang lu\u00f4n c\u00f3 \u0111\u1ed9 tr\u1ec5 so v\u1edbi \u00edn hi\u1ec7u \u00e2m thanh \u0111\u01b0a v\u00e0o \u0111i\u1ec1u khi\u1ec3n m\u00e0ng loa.<\/p>\n

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\u0110\u1ed1i v\u1edbi loa treble c\u1ee7a Acapella, \u00e2m thanh t\u1ea1o n\u00ean nh\u1edd chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a tia l\u1eeda plasma \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ebf (modulation) d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a s\u00f3ng \u00e2m thanh t\u1eeb ampli. V\u00ec tia l\u1eeda kh\u00f4ng c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng, n\u00ean c\u0169ng kh\u00f4ng c\u00f3 qu\u00e1n t\u00ednh. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 tia l\u01b0a chuy\u1ec3n \u0111\u1ed9ng \u00e1p \u1ee9ng t\u1ee9c th\u1eddi s\u1ef1 thay \u0111\u1ed5i d\u00f9 l\u00e0 r\u1ea5t nhanh (t\u1ea5n s\u1ed1 cao) c\u1ee7a t\u00edn hi\u1ec7u \u00e2m thanh \u0111\u01b0a v\u00e0o. N\u00f3i \u0111\u01a1n gi\u1ea3n, loa trbele ion-plasma l\u00e0 thi\u1ebft k\u1ebf loa t\u00e1i t\u1ea1o \u00e2m thanh ch\u00ednh x\u00e1c nh\u1ea5t, tinh vi nh\u1ea5t v\u00e0 nhanh nh\u1ea5t so v\u1edbi c\u00e1c lo\u1ea1i loa hi\u1ec7n c\u00f3 tr\u00ean th\u1ebf gi\u1edbi. Hi\u1ec7n t\u1ea1i, loa treble \u201cion TW 1S\u201d c\u1ee7a Acapella l\u00e0 loa trele ion duy nh\u1ea5t tr\u00ean th\u1ebf gi\u1edbi \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t theo quy m\u00f4 c\u00f4ng nghi\u1ec7p v\u00e0 s\u1eed d\u1ee5ng th\u00e0nh c\u00f4ng trong th\u01b0\u01a1ng m\u1ea1i. Loa \u201cion TW 1S\u201d c\u1ee7a Acapella \u0111\u01b0\u1ee3c \u0111\u1eb7t trong v\u1ecf th\u00e9p, trong \u0111\u00f3 c\u00f3 m\u1ea1ch \u0111i\u1ec7n t\u1eed v\u00e0 c\u00e1c cu\u1ed9n d\u00e2y bi\u1ebfn th\u1ebf cao \u00e1p \u0111\u1ec3 t\u1ea1o ra d\u00f2ng \u0111i\u1ec7n cao. Modul loa \u201cion TW 1S\u201d n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u1eafp v\u00e0o trong th\u00f9ng loa kh\u00e1c nhau c\u1ee7a Acapella, ph\u1ed1i h\u1ee3p v\u1edbi c\u00e1c loa trung k\u00e8n v\u00e0 loa bass \u0111\u1ec3 t\u1ea1o ra \u00e2m thanh to\u00e0n d\u1ea3i.<\/p>\n

Nh\u1eefng ng\u01b0\u1eddi \u0111am m\u00ea DIY c\u0169ng c\u00f3 th\u1ec3 mua r\u1eddi b\u1ed9 loa treble plasma v\u1edbi gi\u00e1 6.500USD \u0111\u1ec3 d\u00f9ng cho nh\u1eefng \u0111\u00f4i loa t\u1ef1 l\u1eafp. Loa \u201cion TW 1S\u201d c\u00f3 d\u1ea3i t\u1ea7n 5 \u2013 50kHz, c\u00f3 n\u00fat \u0111i\u1ec1u ch\u1ec9nh t\u1ea7n s\u1ed1 c\u1eaft. Ph\u1ed1i h\u1ee3p v\u1edbi mi\u1ec7ng k\u00e8n b\u1eb1ng kim lo\u1ea1i, loa trele plasma c\u1ee7a Acapella c\u00f3 th\u1ec3 t\u1ea1o ra m\u1ee9c n\u00e8n \u00e2m t\u1ed1i \u0111a l\u00ean \u0111\u1ebfn 110dB. B\u1ed9 loa n\u00e0y c\u00f2n c\u00f3 c\u01a1 ch\u1ebf v\u1eadn h\u00e0nh t\u1ef1 \u0111\u1ed9ng, c\u00f3 th\u1ec3 nh\u1eadn d\u1ea1n s\u1ef1 c\u00f3 m\u1eb7t c\u1ee7a t\u00edn hi\u1ec7u \u00e2m nh\u1ea1c v\u00e0 t\u1ef1 \u0111\u1ed9ng k\u00edch ho\u1ea1t. Khi kh\u00f4ng c\u00f2n t\u00edn hi\u1ec7u, loa s\u1ebd t\u1ef1 t\u1eaft.<\/p>\n

NH\u1eeeNG T\u00c1C PH\u1ea8M K\u1ebeT TINH T\u1eea NI\u1ec0M \u0110AM M\u00ca<\/strong><\/p>\n

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Ch\u1ebf t\u1ea1o h\u00e0ng ch\u1ee5c model loa trong 30 n\u0103m qua (k\u1ec3 t\u1eeb 1978 \u0111\u1ebfn nay), Acapella \u0111\u00e3 mang l\u1ea1i cho th\u1ebf gi\u1edbi hi-end nh\u1eefng b\u1ed9 loa \u0111\u1ed9c \u0111\u00e1o \u201cc\u00f3 m\u1ed9t kh\u00f4ng hai\u201d v\u1ec1 thi\u1ebft k\u1ebf v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng \u00e2m thanh. Kh\u00f4ng ch\u1ec9 s\u1ea3n xu\u1ea5t loa treble ion v\u00e0 loa k\u00e8n, Acapella c\u00f2n c\u00f3 nhi\u1ec1u model loa bookshel r\u1ea5t \u1ea5n t\u01b0\u1ee3ng. Tuy nhi\u00ean. N\u00f3i \u0111\u1ebfn Acapella l\u00e0 n\u00f3i \u0111\u1ebfn ch\u1ea5t \u00e2m tinh t\u1ebf, r\u1ed9ng m\u1edf v\u00e0 trung th\u1ef1c kh\u00e1c th\u01b0\u1eddng c\u1ee7a c\u00e1c loa k\u00e8n. Nh\u1eefng model loa s\u1eed d\u1ee5ng treble ion v\u00e0 trung k\u00e8n d\u01b0\u1edbi \u0111\u00e2y \u0111\u01b0\u1ee3c coi nh\u01b0 nh\u1eefng \u201cg\u01b0\u01a1ng m\u1eb7t\u201d \u0111\u00e3 l\u00e0m cho h\u00e3ng s\u1ea3n xu\u1ea5t loa n\u00e0y r\u1ea1ng danh tr\u00ean b\u1ea3n \u0111\u1ed3 hi-end th\u1ebf gi\u1edbi. \u0110\u1ec3 s\u1edf h\u1eefu m\u1ed9t trong s\u1ed1 c\u00e1c b\u1ed9 loa d\u01b0\u1edbi \u0111\u00e2y, ngo\u00e0i vi\u1ec7c ph\u1ea3i c\u00f3 ti\u1ec1m l\u1ef1c t\u00e0i ch\u00ednh c\u1ef1c m\u1ea1nh, kh\u00e1ch h\u00e0ng mua loa c\u00f2n ph\u1ea3i c\u00f3 t\u00ednh ki\u00ean nh\u1eabn b\u1edfi h\u1ea7u h\u1ebft c\u00e1c loa ch\u1ec9 l\u00e0m theo \u0111\u01a1n \u0111\u1eb7t h\u00e0ng tr\u01b0\u1edbc 2 \u2013 6 th\u00e1ng v\u00e0 \u0111\u01b0\u1ee3c ch\u1ebf t\u00e1c ho\u00e0n to\u00e0n th\u1ee7 c\u00f4ng v\u1edbi s\u1ef1 tham gia c\u1ee7a Alfred Rudolph, Hermann Winters v\u00e0 nh\u00f3m ngh\u1ec7 nh\u00e2n c\u1ee7a Acapella.<\/p>\n

ACAPELLA VIOLIN MK4<\/strong><\/p>\n

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Acapella Violin MK4: l\u00e0 phi\u00ean b\u1ea3n n\u00e2ng c\u1ea5p quan tr\u1ecdng c\u1ee7a model Violin 3. H\u1ec7 th\u1ed1ng loa 3 \u0111\u01b0\u1eddng ti\u1ebfng v\u1edbi ti\u1ebfng bass s\u00e2u tr\u1ea7m, m\u1ea1nh m\u1ebd v\u00e0 ho\u00e0n to\u00e0n h\u1ee3p v\u1edbi t\u1ed1c \u0111\u1ed9 c\u1ee7a ti\u1ebfng trung v\u00e0 treble. Loa treble l\u1edbn trong Violin MK4 gi\u1ed1ng h\u1ec7t c\u00e1c model cao c\u1ea5p nh\u1ea5t. N\u00f3 c\u00f3 th\u1ec3 x\u1eed l\u00fd t\u1ea7n s\u1ed1 l\u00ean \u0111\u1ebfn 50kHz. D\u1ea3i t\u1ea7n \u0111\u1eb7c bi\u1ec7t r\u1ed9ng n\u00e0y cho ph\u00e9p \u00e2m thanh c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00e1i hi\u1ec7n to\u00e0n v\u1eb9n v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c cao. H\u01a1n n\u1eefa, v\u1edbi k\u00edch th\u01b0\u1edbc v\u1eeba ph\u1ea3i, \u0111\u00f4i loa Violin MK 4 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 \u1edf m\u1ecdi lo\u1ea1i ph\u00f2ng nghe.
\n\u0110\u1ed9 nh\u1ea1y:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 91dB
\nC\u00f4ng su\u1ea5t danh \u0111\u1ecbnh:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 100W
\nC\u00f4ng su\u1ea5t ampli khuy\u1ebfn c\u00e1o:\u00a0\u00a0\u00a0\u00a0\u00a0 l\u1edbn h\u01a1n 25W
\nTr\u1ecdng l\u01b0\u1ee3ng:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 110kg<\/p>\n

ACAPELLA CAMPANILE<\/strong><\/p>\n

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Acapella Campanile: l\u00e0 h\u1ec7 th\u1ed1ng loa 3,5 \u0111\u01b0\u1eddng ti\u1ebfng. B\u1ed1n loa bass 25cm ho\u1ea1t \u0111\u1ed9ng trong nh\u1eefng kh\u00f4ng gian k\u00edn ri\u00eang bi\u1ec7t, ho\u00e0n to\u00e0n kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn nhau. Loa treble ion v\u00e0 loa trung k\u00e8n \u0111\u01b0\u1ee3c tinh ch\u1ec9nh \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t v\u1edbi m\u1ecdi m\u00f4i tr\u01b0\u1eddng \u00e2m nh\u1ea1c\u2026 Ch\u1ec9 c\u1ea7n nh\u1eafm m\u1eaft l\u1ea1i, b\u1ea1n s\u1ebd kh\u00f4ng c\u00f2n nh\u1eadn ra m\u00ecnh \u0111ang th\u01b0\u1edfng th\u1ee9c \u00e2m nh\u1ea1c t\u1eeb h\u1ec7 th\u1ed1ng hi-fi. B\u1ea1n s\u1ebd c\u1ea3m th\u1ea5y m\u00ecnh \u0111ang \u1edf trong bu\u1ed5i h\u00f2a nh\u1ea1c s\u1ed1ng \u0111\u1ed9ng v\u1edbi c\u00e1c ngh\u1ec7 s\u0129 \u1edf ngay tr\u01b0\u1edbc m\u1eb7t. \u0110\u01b0a tay v\u1ec1 ph\u00eda tr\u01b0\u1edbc, b\u1ea1n c\u00f3 th\u1ec3 ch\u1ea1m \u0111\u01b0\u1ee3c v\u00e0o h\u1ecd. ngay c\u1ea3 \u1edf nh\u1eefng m\u1ee9c volume th\u1ea5p nh\u1ea5t.
\n\u0110\u1ed9 nh\u1ea1y:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 93dB
\nC\u00f4ng su\u1ea5t danh \u0111\u1ecbnh:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 200W
\nC\u00f4ng su\u1ea5t ampli khuy\u1ebfn c\u00e1o:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 l\u1edbn h\u01a1n 15W
\nTr\u1ecdng l\u01b0\u1ee3ng:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 200kg<\/p>\n

ACAPELLA SPHARON<\/strong><\/p>\n

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Acapella Spharon: l\u00e0 b\u1ed9 loa huy\u1ec1n tho\u1ea1i \u0111\u1ea7u ti\u00ean c\u1ee7a Acapella, g\u1ed3m loa treble plasma trung k\u00e8n, trung tr\u1ea7m k\u00e8n v\u00e0 4 loa bass n\u00f3n 40cm l\u1eafp trong c\u1ed9t bass kh\u1ed5ng l\u1ed3. B\u1ed9 loa n\u00e0y \u0111\u00f2i h\u1ecfi ph\u00f2ng nghe t\u1ed1i thi\u1ec3u ph\u1ea3i c\u00f3 di\u1ec7n t\u00edch 40m2. \u0110\u1ed9 nh\u1ea1y cao, \u00e2m thanh r\u1ed9ng c\u1ee7a Spharon cho ph\u00e9p ph\u1ed1i h\u1ee3p tuy\u1ec7t v\u1eddi v\u1edbi c\u00e1c ampli \u0111\u00e8n single-end. M\u1ea1nh m\u1ebd, ho\u00e0nh tr\u00e1ng, tinh t\u1ebf v\u00e0 t\u1ef1 nhi\u00ean. H\u1ea7u h\u1ebft d\u00e2n ch\u01a1i hi-end sau khi nghe b\u1ed9 loa n\u00e0y \u0111\u1ec1u cho r\u1eb1ng: ch\u01b0 bao gi\u1edd \u0111\u01b0\u1ee3c th\u01b0\u1edfng th\u1ee9c \u00e2m thanh t\u01b0\u01a1ng t\u1ef1 \u1edf b\u1ea5t c\u1ee9 \u0111\u00e2u
\n\u0110\u1ed9 nh\u1ea1y:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 l\u1edbn h\u01a1n 100dB
\nC\u00f4ng su\u1ea5t danh \u0111\u1ecbnh:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0 \u00a0\u00a0 100W
\nC\u00f4ng su\u1ea5t ampli khuy\u1ebfn c\u00e1o:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 15W
\nTr\u1ecdng l\u01b0\u1ee3ng:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 600kg<\/p>\n

ACAPELLA TRIOLON EXCALIBUR<\/strong><\/p>\n

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Acapella Triolon Excalibur: m\u1ed9t trong nh\u1eefng \u01b0u \u0111i\u1ec3m \u0111\u1eb7c tr\u01b0ng c\u1ee7a loa Triolon Excalibur l\u00e0 d\u1ea3i \u0111\u1ed9ng c\u1ef1c r\u1ed9ng. Kh\u00f4ng m\u1ea5y khi ch\u1ec9 v\u1edbi ampli c\u00f4ng su\u1ea5t 15W\/k\u00eanh m\u00e0 b\u1ea1n l\u1ea1i \u0111\u01b0\u1ee3c th\u01b0\u1edfng th\u1ee9c ch\u1ea5t l\u01b0\u1ee3ng \u00e2m nh\u1ea1c \u0111\u1eb7c bi\u1ec7t cao. 4 loa bass \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a \u0111\u1ed9 \u0111\u1ed9ng trong m\u1ed7i th\u00f9ng loa c\u1ed9t \u0111\u1ee9ng ph\u1ed1i h\u1ee3p v\u1edbi trung k\u00e8n v\u00e0 treble k\u00e8n. \u0110\u00f4i loa n\u00e0y c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 ngay c\u1ea3 trong c\u0103n ph\u00f2ng c\u00f3 di\u1ec7n t\u00edch kho\u1ea3ng 25m2.
\n\u0110\u1ed9 nh\u1ea1y:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 94dB
\nC\u00f4ng su\u1ea5t danh \u0111\u1ecbnh: \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0 200W
\nC\u00f4ng su\u1ea5t ampli khuy\u1ebfn c\u00e1o:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 15W
\nTr\u1ecdng l\u01b0\u1ee3ng:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 400kg<\/p>\n

ACAPELLA SPHARON EXCALIBUR<\/strong><\/p>\n

\"\"<\/p>\n

Acapella Spharon Excalibur: \u0110\u01b0\u1ee3c c\u1ea3i ti\u1ebfn, n\u00e2ng c\u1ea5p t\u1eeb model Spharon, phi\u00ean b\u1ea3n \u0111\u1ec9nh cao Excalibur c\u00f3 th\u00f9ng loa kh\u1ed5ng l\u1ed3 c\u0169ng d\u00f9ng \u0111\u1ebfn b\u1ed1n loa bass 40cm. Ngay c\u1ea3 v\u1edbi nh\u1eefng c\u0103n ph\u00f2ng c\u00f3 k\u00edch th\u01b0\u1edbc tr\u00ean 40m2 v\u00e0 ch\u1ec9 v\u1edbi c\u00f4ng su\u1ea5t 15W, \u00e2m nh\u1ea1c \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00e1i hi\u1ec7n l\u1ea1i ho\u00e0n to\u00e0n ba chi\u1ec1u, \u0111em l\u1ea1i cho ng\u01b0\u1eddi nghe c\u1ea3m gi\u00e1c nh\u01b0 th\u1ec3 h\u1ecd l\u00e0 th\u00e0nh vi\u00ean c\u1ee7a gi\u00e0n nh\u1ea1c giao h\u01b0\u1edfng \u0111ang bi\u1ec3u di\u1ec5n. Excalibur c\u00f3 th\u1ec3 mang l\u1ea1i nh\u1eefng n\u1ed1t nh\u1ea1c m\u1ec1m m\u1ea1i nh\u1ea5t cho \u0111\u1ebfn nh\u1eefng goai \u0111i\u1ec7u rung chuy\u1ec3n nh\u01b0 s\u1ea5m s\u00e9t. Khi nghe nh\u1eefng b\u1ea3n nh\u1ea1c \u00eam d\u1ecbu, \u00e2m thanh \u201cbao b\u1ecdc\u201d th\u1eadt nh\u1eb9 nh\u00e0ng. Khi nghe nh\u1eefng b\u1ea3n nh\u1ea1c m\u1ea1nh m\u1ebd, \u00e2m thanh l\u00f4i cu\u1ed1n. Ng\u01b0\u1eddi nghe s\u1ebd \u0111\u1ea1t \u0111\u1ebfn \u0111\u1ec9nh cao c\u1ee7a s\u1ef1 h\u1ee9ng kh\u1edfi.
\n\u0110\u1ed9 nh\u1ea1y:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 l\u1edbn h\u01a1n 100dB
\nC\u00f4ng su\u1ea5t danh \u0111\u1ecbnh:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 100W
\nC\u00f4ng su\u1ea5t ampli khuy\u1ebfn c\u00e1o:\u00a0\u00a0\u00a0\u00a0\u00a0 15W
\nTr\u1ecdng l\u01b0\u1ee3ng:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 620kg.<\/p>\n

Theo T\u1ea1p Ch\u00ed Nghe Nh\u00ecn<\/strong><\/em><\/p>\n

\"\"<\/strong><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

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V\u1edbi…<\/p>\n","protected":false},"author":1,"featured_media":1716,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":[]},"categories":[12,15],"tags":[537],"class_list":["post-1715","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-danh-gia-review","category-tin-tuc","tag-acapella","category-12","category-15","description-off"],"jetpack_publicize_connections":[],"yoast_head":"\nAcapella \u2013 \u00c2m h\u01b0\u1edfng t\u1eeb c\u00f4ng ngh\u1ec7 \u0111\u1ed9c \u0111\u00e1o - SaigonStereo<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.saigonstereo.com\/home\/acapella-am-huong-tu-cong-nghe-doc-dao\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Acapella \u2013 \u00c2m h\u01b0\u1edfng t\u1eeb c\u00f4ng ngh\u1ec7 \u0111\u1ed9c \u0111\u00e1o - SaigonStereo\" \/>\n<meta property=\"og:description\" content=\"HFVN – V\u1edbi nh\u1eefng ng\u01b0\u1eddi ch\u01a1i \u00e2m thanh hi-end, c\u00f3 l\u1ebd Acapella l\u00e0 m\u1ed9t trong nh\u1eefng c\u00e1i t\u00ean mang l\u1ea1i nhi\u1ec1u \u1ea5n t\u01b0\u1ee3ng nh\u1ea5t. 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