{"id":5634,"date":"2024-05-27T12:27:22","date_gmt":"2024-05-27T12:27:22","guid":{"rendered":"https:\/\/phongphim3trong1.com\/?p=5634"},"modified":"2024-05-27T12:33:12","modified_gmt":"2024-05-27T12:33:12","slug":"su-khac-nhau-giua-day-loa-va-day-tin-hieu","status":"publish","type":"post","link":"https:\/\/phongphim3trong1.com\/?p=5634","title":{"rendered":"S\u1ef0 KH\u00c1C NHAU GI\u1eeeA D\u00c2Y LOA V\u00c0 D\u00c2Y T\u00cdN HI\u1ec6U"},"content":{"rendered":"\t\t
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D\u00e2y loa v\u00e0 d\u00e2y t\u00edn hi\u1ec7u \u0111\u1ec1u c\u00f3 c\u00f9ng ch\u1ee9c n\u0103ng l\u00e0 truy\u1ec1n d\u1eabn v\u00e0 gi\u1eef \u1ed5n \u0111\u1ecbnh cho c\u00e1c t\u00edn hi\u1ec7u trong m\u1ed9t b\u1ed9 d\u00e0n \u00e2m thanh. Tuy nhi\u00ean,2 lo\u1ea1i d\u00e2y n\u00e0y l\u1ea1i c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t r\u1ea5t l\u1edbn v\u1ec1 \u0111\u1eb7c t\u00ednh k\u1ef9 thu\u1eadt c\u0169ng nh\u01b0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c thi\u1ebft b\u1ecb. B\u1ea1n kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng d\u00e2y loa \u0111\u1ec3 thay th\u1ebf cho d\u00e2y t\u00edn hi\u1ec7u, v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. V\u1eady l\u00e0m sao \u0111\u1ec3 ph\u00e2n bi\u1ec7t d\u00e2y loa v\u00e0 d\u00e2y t\u00edn hi\u1ec7u?<\/p>

D\u00e2y loa v\u00e0 d\u00e2y t\u00edn hi\u1ec7u c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi chung l\u00e0 d\u00e2y d\u1eabn. Trong h\u1ec7 th\u1ed1ng d\u00e0n \u00e2m thanh, ch\u00fang \u0111\u01b0\u1ee3c ph\u00e2n \u0111\u1ecbnh b\u1eb1ng m\u1ee9c \u0111\u1ed9 truy\u1ec1n t\u00edn hi\u1ec7u th\u1ea5p hay cao. \u0110\u1ed1i v\u1edbi d\u00e2y loa th\u00ec chuy\u1ec3n t\u1ea3i t\u00edn hi\u1ec7u m\u1ee9c cao, c\u00f2n d\u00e2y t\u00edn hi\u1ec7u th\u00ec chuy\u1ec3n t\u1ea3i t\u00edn hi\u1ec7u m\u1ee9c th\u1ea5p.<\/p>

\u00a0D\u00e2y loa v\u00e0 d\u00e2y t\u00edn hi\u1ec7u l\u00e0 nh\u1eefng thi\u1ebft b\u1ecb kh\u00f4ng th\u1ec3 thi\u1ebfu trong m\u1ed9t d\u00e0n \u00e2m thanh, ch\u00fang k\u1ebft n\u1ed1i c\u00e1c thi\u1ebft b\u1ecb l\u1ea1i v\u1edbi nhau. Ch\u00ednh v\u00ec th\u1ebf, vi\u1ec7c ch\u1ecdn l\u1ef1a lo\u1ea1i d\u00e2y loa v\u00e0 d\u00e2y t\u00edn hi\u1ec7u th\u00edch h\u1ee3p s\u1ebd gi\u00fap \u00e2m thanh hay h\u01a1n v\u00e0 gi\u00fap b\u1ea1n khai th\u00e1c \u0111\u01b0\u1ee3c h\u1ebft kh\u1ea3 n\u0103ng c\u1ee7a b\u1ed9 d\u00e0n \u00e2m thanh \u0111\u00f3.<\/p>

1. V\u1ec1 kh\u00e1i ni\u1ec7m v\u00e0 nhi\u1ec7m v\u1ee5 c\u1ee7a d\u00e2y loa v\u00e0 d\u00e2y t\u00edn hi\u1ec7u:<\/u><\/b><\/p>

D\u00e2y loa (Speaker Cable): d\u00e2y loa c\u00f3 nhi\u1ec7m v\u1ee5 chuy\u1ec3n t\u1ea3i c\u00e1c t\u00edn hi\u1ec7u m\u1ee9c cao (\u0111\u1ebfn v\u00e0i tr\u0103m volt) t\u1eeb ampli \u0111\u1ebfn c\u00e1c loa trong h\u1ec7 th\u1ed1ng \u00e2m thanh.<\/p>

D\u00e2y t\u00edn hi\u1ec7u (Interconnect): c\u00f3 nhi\u1ec7m v\u1ee5 chuy\u1ec3n t\u1ea3i c\u00e1c t\u00edn hi\u1ec7u m\u1ee9c th\u1ea5p (th\u01b0\u1eddng t\u1eeb v\u00e0i milivolt \u0111\u1ebfn v\u00e0i volt) gi\u1eefa c\u00e1c thi\u1ebft b\u1ecb ngu\u1ed3n (\u0111\u1ea7u CD, tuner, \u0111\u1ea7u b\u0103ng) v\u1edbi DAC, preampli v\u00e0 gi\u1eefa preampli t\u1edbi ampli c\u00f4ng su\u1ea5t.<\/p>

\u00a0<\/p>

2. Ph\u00e2n lo\u1ea1i d\u00e2y loa v\u00e0 d\u00e2y t\u00edn hi\u1ec7u:<\/u><\/b><\/p>

D\u00e2y t\u00edn hi\u1ec7u c\u00f3 3 lo\u1ea1i:<\/i><\/b><\/p>

D\u00e2y t\u00edn hi\u1ec7u kh\u00f4ng c\u00e2n b\u1eb1ng (Unbalanced Interconnect): th\u01b0\u1eddng c\u00f3 hai l\u00f5i v\u00e0 c\u00f3 \u0111\u1ea7u c\u1eafm ki\u1ec3u RCA (b\u00f4ng sen). N\u00f3 c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 d\u00e2y t\u00edn hi\u1ec7u single-end.<\/p>

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\u00a0D\u00e2y t\u00edn hi\u1ec7u c\u00e2n b\u1eb1ng (Balanced Interconnect): c\u00f3 ba l\u00f5i d\u00e2y v\u00e0 s\u1eed d\u1ee5ng \u0111\u1ea7u n\u1ed1i ki\u1ec3u XLR. N\u00f3 th\u01b0\u1eddng d\u00f9ng cho c\u00e1c thi\u1ebft b\u1ecb c\u00f3 \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u00e2n b\u1eb1ng.<\/p>

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\u00a0\u00a0\u00a0 \u00a0 D\u00e2y t\u00edn hi\u1ec7u s\u1ed1 (Digital Interconnect): l\u00e0 m\u1ed9t d\u00e2y t\u00edn hi\u1ec7u \u0111\u01a1n truy\u1ec1n t\u00edn hi\u1ec7u digital, th\u00f4ng th\u01b0\u1eddng t\u1eeb CD transport ho\u1eb7c c\u00e1c ngu\u1ed3n digital kh\u00e1c t\u1edbi b\u1ed9 x\u1eed l\u00fd digital. D\u00e2y digital c\u00f3 lo\u1ea1i l\u00e0m b\u1eb1ng kim lo\u1ea1i (coaxial) v\u00e0 lo\u1ea1i l\u00e0m b\u1eb1ng plastic ho\u1eb7c th\u1ee7y tinh h\u1eefu c\u01a1 (optical).<\/p>

\"\"<\/p>

D\u00e2y loa c\u0169ng c\u00f3 3 lo\u1ea1i nh\u01b0 sau:<\/i><\/b><\/p>

D\u00e2y loa \u0111\u01a1n (c\u00f2n g\u1ecdi l\u00e0 single-end): m\u1ed7i \u0111\u1ea7u ch\u1ec9 c\u00f3 hai c\u1ecdc \u0111\u1ea5u, d\u00e2y l\u00e0 ki\u1ec3u ph\u1ed5 bi\u1ebfn nh\u1ea5t hi\u1ec7n nay.<\/p>

\u00a0<\/p>

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D\u00e2y loa \u0111a m\u1ed1i (bi-wire, tri-wire): m\u1ed7i \u0111\u1ea7u c\u00f3 2 ho\u1eb7c 3 c\u1ecdc \u0111\u1ea5u, d\u00f9ng cho c\u00e1c loa c\u00f3 th\u1ec3 \u0111\u1ea5u 2 ho\u1eb7c 3 \u0111\u01b0\u1eddng ti\u1ebfng \u0111\u1ed9c l\u1eadp.<\/p>

\"\"<\/p>

\u00a0D\u00e2y loa c\u00f3 nhi\u1ec1u ki\u1ec3u \u0111\u1ea7u c\u1eafm nh\u01b0: \u0111\u1ea7u kim th\u1eb3ng, \u0111\u1ea7u kim cong, b\u1eafp chu\u1ed1i, c\u00e0ng cua\u2026 trong \u0111\u00f3 \u0111\u1ea7u b\u1eafp chu\u1ed1i v\u00e0 c\u00e0ng cua l\u00e0 ph\u1ed5 bi\u1ebfn nh\u1ea5t trong c\u00e1c d\u00e2y loa cao c\u1ea5p. N\u1ebfu kh\u00f4ng c\u00f3 y\u00eau c\u1ea7u th\u00e1o ra th\u00e1o v\u00e0o nhi\u1ec1u, b\u1ea1n c\u00f3 th\u1ec3 d\u00f9ng d\u00e2y loa tr\u1ea7n \u0111\u1ec3 tr\u1ef1c ti\u1ebfp v\u00e0o c\u1ecdc ampli v\u00e0 c\u1ecdc loa c\u0169ng r\u1ea5t t\u1ed1t.<\/p>

\"\"<\/p>

3.<\/u><\/b>\u00a0<\/b><\/a>C\u1ea5u t\u1ea1o c\u1ee7a d\u00e2y loa v\u00e0 d\u00e2y t\u00edn hi\u1ec7u:<\/u><\/b><\/p>

C\u1ea5u t\u1ea1o d\u00e2y loa kh\u00e1 \u0111\u01a1n gi\u1ea3n v\u1edbi th\u00e0nh ph\u1ea7n b\u00ean trong g\u1ed3m 2 d\u00e2y \u0111\u1ed3ng g\u1ea7n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi d\u00e2y \u0111i\u1ec7n, d\u00e2y \u00e2m v\u00e0 d\u00e2y d\u01b0\u01a1ng dung \u0111\u1ec3 truy\u1ec1n t\u1ea3i c\u00e1c t\u00edn hi\u1ec7u m\u1ee9c \u0111\u1ed9 cao. T\u00f9y v\u00e0o m\u1ee9c \u0111\u1ed9 c\u1ee7a d\u00e0n m\u00e0 ta c\u00f3 th\u1ec3 ch\u1ecdn d\u00e2y loa c\u00f3 l\u1ed7i \u0111\u1ed3ng to hay nh\u1ecf.<\/p>

C\u1ea5u t\u1ea1o d\u00e2y t\u00edn hi\u1ec7u kh\u00e1c v\u1edbi d\u00e2y loa, th\u00e0nh ph\u1ea7n b\u00ean trong d\u00e2y t\u00edn hi\u1ec7u g\u1ed3m 3 ch\u1ea5t d\u1eabn \u0111i\u1ec7n, ch\u1ea5t c\u00e1ch \u0111i\u1ec7n v\u00e0 \u0111\u1ea7u c\u1eafm. Khi ta h\u00e0n d\u00e2y t\u00edn hi\u1ec7u v\u00e0o jack ta t\u1ef1 quy \u0111\u1ecbnh th\u1ee9 t\u1ef1 c\u1ee7a d\u00e2y v\u00e0 t\u1ee9c nhi\u00ean \u0111\u1ea7u kia c\u0169ng ph\u1ea3i kh\u1edbp \u0111\u1ec3 t\u00edn hi\u1ec7u m\u1edbi truy\u1ec1n \u0111i \u0111\u01b0\u1ee3c. Tr\u00ean th\u1ecb tr\u01b0\u1eddng c\u00f3 lo\u1ea1i d\u00e2y t\u00edn hi\u1ec7u ch\u01b0a h\u00e0n v\u00e0 d\u00e2y t\u00edn hi\u1ec7u \u0111\u00e3 h\u00e0n gi\u00fap b\u1ea1n c\u00f3 nhi\u1ec1u l\u1ef1a ch\u1ecdn h\u01a1n.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

D\u00e2y loa v\u00e0 d\u00e2y t\u00edn hi\u1ec7u \u0111\u1ec1u c\u00f3 c\u00f9ng ch\u1ee9c n\u0103ng l\u00e0 truy\u1ec1n d\u1eabn v\u00e0 gi\u1eef \u1ed5n \u0111\u1ecbnh cho c\u00e1c t\u00edn hi\u1ec7u trong m\u1ed9t b\u1ed9 d\u00e0n \u00e2m thanh. Tuy nhi\u00ean,2 lo\u1ea1i d\u00e2y n\u00e0y l\u1ea1i c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t r\u1ea5t l\u1edbn v\u1ec1 \u0111\u1eb7c t\u00ednh k\u1ef9 thu\u1eadt c\u0169ng nh\u01b0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c thi\u1ebft b\u1ecb. 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