C\u00e1c gi\u1eafc c\u1eafm, n\u00fat ch\u1ec9nh th\u01b0\u1eddng th\u1ea5y tr\u00ean loa sub:<\/strong><\/span><\/h2>\n

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1. T\u00edn hi\u1ec7u \u0111\u1ea7u v\u00e0o<\/strong><\/span><\/h3>\n

\u2013 Loa sub c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u ng\u00f5 t\u00edn hi\u1ec7u \u0111\u1ea7u v\u00e0o, c\u00f3 th\u1ec3 k\u1ec3 ra c\u00e1c \u0111\u01b0\u1eddng v\u00e0o c\u01a1 b\u1ea3n nh\u01b0 sau<\/span>
\n+ Line Level Input: \u0111\u00e2y l\u00e0 \u0111\u1ea7u v\u00e0o ch\u01b0a c\u00f3 khu\u1ebfch \u0111\u1ea1i, n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c n\u1ed1i v\u1edbi c\u1ed5ng LFE c\u1ee7a ampli, ho\u1eb7c c\u1ed5ng sub-out, ho\u1eb7c pre-out sub-woofer c\u1ee7a ampli. L\u00fac n\u00e0y ampli ch\u1ec9 g\u1eedi t\u00edn hi\u1ec7u \u00e2m tr\u1ea7m nh\u01b0ng c\u00f4ng su\u1ea5t r\u1ea5t y\u1ebfu, sang cho sub, v\u00e0 sub s\u1ebd d\u00f9ng m\u1ea1ch t\u0103ng \u00e2m c\u1ee7a b\u1ea3n th\u00e2n n\u00f3 \u0111\u1ec3 khu\u1ebfch \u0111\u1ea1i \u00e2m thanh \u0111\u1ea7u ra (sub \u0111i\u1ec7n).<\/span>
\n+ C\u1ed5ng LFE (Low Frequency Effect) d\u00f9ng \u0111\u1ec3 n\u1ed1i v\u1edbi nh\u1eefng ampli c\u00f3 ng\u00f5 ra LFE chuy\u00ean d\u00e0nh cho nh\u1eefng \u201chi\u1ec7u \u1ee9ng \u00e2m thanh t\u1ea7n s\u1ed1 th\u1ea5p\u201d th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c track phim.<\/span>
\n+ High Level Input (speaker level input): \u0111\u00e2y l\u00e0 ng\u00f5 d\u00e0nh cho t\u00edn hi\u1ec7u \u00e2m thanh \u0111\u00e3 \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i do ampli g\u1eedi ra, n\u00f3 \u0111\u01b0\u1ee3c n\u1ed1i v\u1edbi c\u1ecdc loa L\/R c\u1ee7a ampli. L\u00fac n\u00e0y sub nh\u1eadn \u0111\u01b0\u1ee3c t\u1ea5t c\u1ea3 \u00e2m thanh c\u1ee7a b\u00e0i nh\u1ea1c, nh\u01b0ng n\u00f3 s\u1ebd c\u00f3 m\u1ea1ch ph\u00e2n t\u1ea7n n\u1ed9i t\u1ea1i \u0111\u1ec3 l\u1ecdc b\u1ecf nh\u1eefng \u00e2m thanh t\u1ea7n s\u1ed1 cao, ch\u1ec9 ph\u00e1t \u00e2m tr\u1ea7m. C\u00e1ch n\u00e0y d\u00f9ng \u0111\u1ec3 n\u1ed1i sub h\u01a1i (kh\u00f4ng c\u00f3 m\u1ea1ch t\u0103ng \u00e2m), ho\u1eb7c nhi\u1ec1u sub \u0111i\u1ec7n c\u0169ng c\u00f3 ch\u1ee9c n\u0103ng n\u00e0y.<\/span><\/p>\n

Nhi\u1ec1u sub th\u00ec c\u00f3 2 c\u1ed5ng line level input d\u1ea1ng Left\/Right, ch\u00fang ta c\u00f3 th\u1ec3 n\u1ed1i ch\u00fang v\u1edbi ng\u00f5 ra pre-out L\/R t\u01b0\u01a1ng \u1ee9ng c\u1ee7a ampli, l\u00fac n\u00e0y sub c\u0169ng nh\u1eadn \u0111\u01b0\u1ee3c to\u00e0n b\u1ed9 \u00e2m thanh c\u1ee7a b\u00e0i nh\u1ea1c nh\u01b0ng c\u0169ng d\u00f9ng ph\u00e2n t\u1ea7n \u0111\u1ec3 l\u1ecdc b\u1ecf \u00e2m thanh t\u1ea7n s\u1ed1 cao<\/span><\/p>\n

C\u00f3 sub th\u00ec trong 2 c\u1ed5ng Left\/Right input k\u1ec3 tr\u00ean, c\u00f3 m\u1ed9t c\u1ed5ng c\u00f3 ch\u1ee9c n\u0103ng Mono. C\u1ed5ng n\u00e0y ta n\u1ed1i v\u1edbi c\u1ed5ng sub pre out c\u1ee7a ampli.<\/span>
\nC\u00e2u h\u1ecfi: n\u1ebfu sub c\u00f3 2 \u0111\u01b0\u1eddng v\u00e0o L\/R stereo, ch\u00fang ta ch\u1ec9 n\u1ed1i 1 c\u1ed5ng v\u1edbi sub-pre-out c\u1ee7a ampli th\u00ec c\u00f3 m\u1ea5t \u00e2m h\u00ecnh hay kh\u00f4ng?<\/span><\/p>\n

\u2013 Tr\u1ea3 l\u1eddi: \u00e2m tr\u1ea7m c\u00f3 \u0111\u1eb7c t\u00ednh lan to\u1ea3 v\u00f4 h\u01b0\u1edbng, tai ng\u01b0\u1eddi s\u1ebd kh\u00f3 x\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed c\u1ee7a ngu\u1ed3n \u00e2m tr\u1ea7m\/si\u00eau tr\u1ea7m, v\u00ec th\u1ebf n\u00ean n\u1ed1i mono hay stereo \u0111\u1ec1u kh\u00f4ng \u1ea3nh h\u01b0\u1edfng g\u00ec \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn \u00e2m h\u00ecnh stereo c\u1ea3.<\/span><\/p>\n

2. N\u00fat xoay\/g\u1ea1t Low pass cross-over level:<\/strong> d\u00f9ng \u0111\u1ec3 hi\u1ec7u ch\u1ec9nh m\u1ee9c c\u1eaft t\u1ea7n c\u1ee7a loa sub. M\u1ee9c n\u00e0y kh\u00f4ng c\u00f3 khu\u00f4n m\u1eabu, m\u00e0 n\u00ean hi\u1ec7u ch\u1ec9nh theo th\u1ef1c t\u1ebf, nh\u01b0 trong b\u00e0i s\u1ed1 1 \u0111\u00e3 v\u1ebd s\u01a1 \u0111\u1ed3.<\/span><\/p>\n

3. Low pass cross over on\/off<\/strong> (ho\u1eb7c direct, ho\u1eb7c cross-over bypass, ho\u1eb7c sub-woofer direct, ho\u1eb7c internal X-over nh\u01b0 trong h\u00ecnh Velodyne b\u00ean tr\u00ean): d\u00f9ng \u0111\u1ec3 b\u1eadt ho\u1eb7c t\u1eaft m\u1ea1ch ph\u00e2n t\u1ea7n c\u1ee7a loa sub, khi t\u1eaft n\u00f3 th\u00ec ta c\u00f3 th\u1ec3 d\u00f9ng ch\u1ee9c n\u0103ng c\u1eaft t\u1ea7n c\u1ee7a ampli. Khi \u0111\u00f3 loa sub s\u1ebd tr\u00ecnh di\u1ec5n t\u1ea5t c\u1ea3 nh\u1eefng g\u00ec m\u00e0 ampli g\u1eedi cho n\u00f3.<\/span><\/p>\n

4. Phase: n\u00fat \u0111\u1ea3o pha.<\/span><\/strong>
\nN\u1ebfu \u0111\u1ec3 Normal, th\u00ec pha c\u1ee7a ti\u1ebfng tr\u1ea7m t\u1eeb loa sub s\u1ebd tr\u00f9ng v\u1edbi pha ti\u1ebfng tr\u1ea7m c\u1ee7a c\u00e1c loa kh\u00e1c. Ch\u00fang c\u00f3 th\u1ec3 c\u1ed9ng h\u01b0\u1edfng ho\u1eb7c tri\u1ec7t ti\u00eau l\u1eabn nhau tu\u1ef3 theo th\u1ef1c t\u1ebf<\/span>
\nN\u1ebfu \u0111\u1ec3 180o, ho\u1eb7c reverb, th\u00ec ti\u1ebfng tr\u1ea7m loa sub l\u1ec7ch pha 180o v\u1edbi ti\u1ebfng tr\u1ea7m c\u1ee7a c\u00e1c loa kh\u00e1c, ch\u00fang c\u0169ng c\u00f3 th\u1ec3 c\u1ed9ng h\u01b0\u1edfng ho\u1eb7c tri\u1ec7t ti\u00eau nhau\u2026<\/span><\/p>\n

5. N\u00fat standby On\/Off\/Auto\/High\/Low<\/strong> (trong h\u00ecnh Velodyne b\u00ean tr\u00ean h\u1ecd g\u1ecdi l\u00e0 power on\/auto)<\/span>
\nTrong c\u00e1c b\u00e0i nh\u1ea1c\/phim, n\u1ebfu kh\u00f4ng c\u00f3 LFE hay \u00e2m tr\u1ea7m ra loa trong m\u1ed9t th\u1eddi gian n\u00e0o \u0111\u00f3, th\u00ec loa sub c\u00f3 th\u1ec3 t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n sang tr\u1ea1ng th\u00e1i ngh\u1ec9. N\u00f3 v\u1eabn s\u1eb5n s\u00e0ng ch\u1edd \u1edf c\u1ed5ng LFE, n\u1ebfu c\u00f3 t\u00edn hi\u1ec7u \u0111\u1ee7 m\u1ea1nh th\u00ec s\u1ebd t\u1ef1 \u0111\u1ed9ng b\u1eadt ngay tr\u1edf l\u1ea1i.<\/span>
\nCh\u1ee9c n\u0103ng n\u00e0y c\u00f3 th\u1ec3 c\u00f3 ho\u1eb7c kh\u00f4ng tu\u1ef3 theo t\u1eebng model loa sub kh\u00e1c nhau.<\/span>
\nN\u1ebfu \u0111\u1ec3 m\u1ee9c Low th\u00ec loa \u00edt nh\u1ea1y h\u01a1n, \u0111\u1ec3 m\u1ee9c High th\u00ec loa nh\u1ea1y h\u01a1n, ch\u1ec9 c\u1ea7n ch\u00fat x\u00edu t\u00edn hi\u1ec7u \u00e2m tr\u1ea7m l\u00e0 n\u00f3 s\u1ebd b\u1eadt ngay tr\u1edf l\u1ea1i.<\/span><\/p>\n<\/div>\n