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PUTIQ
Sarjan
Joined: Sep 27, 2006
Posts: 1188
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 Posted: Sun Jan 27, 2013 10:21 am Post subject: Minta tolong mereka yg tahu (PA system) |
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Aku kekadang terpaksa pasang PA system. Basic knowledge hampir kpd kosong.
Nih nak tanya nih.....
Kat menatang PA tu byk selector.... rasanya aku tau, cocoh mic no 2 maka kita adjust no 2 laa...
yg jadi masalah,wayar speaker.....aku ada 2 speaker box yg sambung parallel, tak dak tulih berapa watt. Jadi aku nak sambung wayar tu kat yg berapa watt? ada tulis 8 W, 16 W. 70, W dan 100 W. Aku cuba satu satu....semua bunyi molek.....aku takut speaker tu rosakjah.
Akhirnya 2 ari lepas, speaker tu kong...... tinggal bunyi tweeter jah.... dua dua sekali....bunyi macam katun la pulak....Nasib baik acara sambutam maulid tu dah nak abih sgt, pengerusi majlis tengah tutup majlis.
Kat situ ada 2 PA..... apabila org dah balik, aku cuba dgn PA yg lain....bunyi sama je....macam bunyi burung....Aku check wayar dlm kotak speaker tu.....nampak molek je.
Terima kasih saya dahulukan kpd sahabat yg ingin menolong. Sek agama boh...tak dak duit..... |
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mofza
Pegawai Waran II
Joined: Jul 16, 2007
Posts: 2267
Location: atas bumi Allah yg fana...
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| Posted: Sun Jan 27, 2013 10:29 am Post subject: |
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pasa ni, aku tak dapat nak nolong lah...
cuba kontek benci umno..
mungkin dia tahu...pm je ke dia...
klu nk kongsi buat kat sini je... |
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PUTIQ
Sarjan
Joined: Sep 27, 2006
Posts: 1188
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| Posted: Sun Jan 27, 2013 10:34 am Post subject: |
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benci umno dia expert engine....
Tolong la weh kawe nih............ |
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Saber
Rekrut
Joined: Oct 13, 2012
Posts: 53
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| Posted: Sun Jan 27, 2013 11:29 am Post subject: |
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| kat speaker tu mesti ada tulis samaada W (watt) , V (volt), R/Ω (ohm), I (amp). |
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PUTIQ
Sarjan
Joined: Sep 27, 2006
Posts: 1188
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| Posted: Sun Jan 27, 2013 12:16 pm Post subject: |
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| tak ada tulih,cap ayam agaknya.... Kalau ada rintangan dia kita kira macam eletrik juga ke? |
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najiru
Rekrut
Joined: Mar 09, 2007
Posts: 2
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| Posted: Sun Jan 27, 2013 12:18 pm Post subject: |
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Putiq cuba belajar dari sini :
http://www.youtube.com/watch?v=ysuBeGeQ2yM
output 70W atau 100W memerlukan ada matching transformer samada di luar atau builtin dalam speaker. |
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siwoxe
Rekrut
Joined: Jun 05, 2008
Posts: 7
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| Posted: Sun Jan 27, 2013 1:56 pm Post subject: |
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| cuba buka kotak speaker tu.dekat speaker biasa ada tulis ohm/watt.klau speaker watt tinggi sambung pada output PA yg rendah.masih ada bunyi.tapi mungkin tak berapa best bunyinya.tapi klau watt speaker rendah disambung pd output PA yg tinggi, speaker bleh rosak.cuba check ohm speaker pakai multimetr |
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PUTIQ
Sarjan
Joined: Sep 27, 2006
Posts: 1188
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| Posted: Sun Jan 27, 2013 2:15 pm Post subject: |
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| kalau speaker kita sambung parellel adakah pengiraan ohm nya macam yg biasa tuh 1/rj = 1/r1 ........ |
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PUTIQ
Sarjan
Joined: Sep 27, 2006
Posts: 1188
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| Posted: Sun Jan 27, 2013 2:17 pm Post subject: |
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slow dan prounce problem.... |
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Fazenne
Prebet
Joined: Sep 07, 2005
Posts: 196
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| Posted: Sun Jan 27, 2013 2:17 pm Post subject: |
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Bang... kalau buka kotak speaker tu... memang ada tulis berapa Watt... dan Impedance... walaupun cap ayam...
Kena matchkan dgn yg ada pada Amp tu... kalau tak... terlebih atau terkurang... kalau terkurang... contohnya, Amp bg 100W... speaker 200W... bunyi yg keluar, tak dapat yg power habis lah...
Kalau terlebih, contohnya speaker 50 W, Amp 100 W... jahanam pulak speaker tu...
Lepas tu, kena tengok Impedance pulak... kalau 6 Ohm, sambung 2 speaker in Series... dia akan jadi 3 Ohm... dan power jadi separuh... kalau sambung in Parallel, dia jadi double pulak, 12 Ohm...
Sambungan in series dan parallel... memainkan peranan penting utk Total RMS... dan berapa byk speaker yg di sambung... kalau terlebih speaker... Amp x tahan la jawabnya... kalau terlebih power pd Amp (boleh adjust kat Volume)... speaker pulak jahanam...
Kena kira semua tu bang...
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Arguing On The Internet Is Like Running In The Special Olympics: Even If You Win, You're Still Retarded |
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PUTIQ
Sarjan
Joined: Sep 27, 2006
Posts: 1188
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| Posted: Sun Jan 27, 2013 2:22 pm Post subject: |
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Lepas tu, kena tengok Impedance pulak... kalau 6 Ohm, sambung 2 speaker in Series... dia akan jadi 3 Ohm... dan power jadi separuh... kalau sambung in Parallel, dia jadi double pulak, 12 Ohm...
Rasa macam terbalik apa yg tuan tulis diatas (saya copy).
sambung parellel baru rendah rintangan dia........ |
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Fazenne
Prebet
Joined: Sep 07, 2005
Posts: 196
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| Posted: Sun Jan 27, 2013 2:30 pm Post subject: |
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Impedance circuit memang terbalik berbanding Power circuit tuan... kita kira Impedance tu supaya power tak terlebih dari apa yg Amp boleh bagi...
Biasanya, kita buat circuit tu, bergantung kpd berapa impedance yg Amplifier bagi... sbb Imp pd Amp tu, kita dah tak boleh tukar dah...
Alamak... saya tak reti nak explain dlm tulisan lah... maybe tuan boleh cek dgn guna circuit diagram... lagi senang faham... saya ni, bab nak bagi kefahaman ni... hancus...
Kat bawah ni, explain circuit secara simple... tp, jgn risau... asas Impedance circuit ni, sama jer... tak kira berapa banyak speaker kita pasang...
http://www.hometoys.com/emagazine/2005/06/series--parallel-speaker-wiring/1874
Maaf atas kekurangan saya... 
_________________
Arguing On The Internet Is Like Running In The Special Olympics: Even If You Win, You're Still Retarded |
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Saber
Rekrut
Joined: Oct 13, 2012
Posts: 53
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| Posted: Tue Jan 29, 2013 12:23 am Post subject: |
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| Cuba cek ohm speaker dgn multimeter, brp diameter dan tebal magnet speaker. |
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TOK_BATIN
Koperal
Joined: Apr 24, 2008
Posts: 674
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| Posted: Tue Jan 29, 2013 2:14 am Post subject: |
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| PUTIQ wrote: | Lepas tu, kena tengok Impedance pulak... kalau 6 Ohm, sambung 2 speaker in Series... dia akan jadi 3 Ohm... dan power jadi separuh... kalau sambung in Parallel, dia jadi double pulak, 12 Ohm...
Rasa macam terbalik apa yg tuan tulis diatas (saya copy).
sambung parellel baru rendah rintangan dia........ |
Mmg benar.........
formula kiraan impedence, galangan z, sama dgn rintangan R..... unit nya ohm... |
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TOK_BATIN
Koperal
Joined: Apr 24, 2008
Posts: 674
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| Posted: Tue Jan 29, 2013 2:16 am Post subject: |
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| Fazenne wrote: | Bang... kalau buka kotak speaker tu... memang ada tulis berapa Watt... dan Impedance... walaupun cap ayam...
Kena matchkan dgn yg ada pada Amp tu... kalau tak... terlebih atau terkurang... kalau terkurang... contohnya, Amp bg 100W... speaker 200W... bunyi yg keluar, tak dapat yg power habis lah...
Kalau terlebih, contohnya speaker 50 W, Amp 100 W... jahanam pulak speaker tu...
Lepas tu, kena tengok Impedance pulak... kalau 6 Ohm, sambung 2 speaker in Series... dia akan jadi 3 Ohm... dan power jadi separuh... kalau sambung in Parallel, dia jadi double pulak, 12 Ohm...
Sambungan in series dan parallel... memainkan peranan penting utk Total RMS... dan berapa byk speaker yg di sambung... kalau terlebih speaker... Amp x tahan la jawabnya... kalau terlebih power pd Amp (boleh adjust kat Volume)... speaker pulak jahanam...
Kena kira semua tu bang... |
mmg benar.... |
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