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Old 19-06-09, 18:15   #1
playerul

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Default sal ; problema amplificator pt hertz hx-380D

AM si eu difuzorul de mai jos, cutie bass reflex :
difuzor subwoofer 15"
diametru: 38cm
putere RMS: 700W
putere Max: 1400W
impedanta: 4+4 ohmi
raspuns in frecventa: 18- 200Hz
sensibilitate: 98dB
adancime instalare: 17.3cm
greutate: 9.38Kg
magnet: ferita de inalta densitate
Fs: 28Hz
Vas: 106 litrii
Qts: 0.35
Xmax: 10mm

L am cumaparat de la cineva, observ ca are 2 bobine dar cutia are decat 2 iesiri , plus si minus, deci sa inteleg ca este legat in serial pe 8 ohm de are doar o iesire. De ceva timp ma tot chinui sa gasesc o statie acceptabila pt el, nu neaparat noua si care sa nu depaseasca 10mil second, sau 15 noua. PLs help me cu niste modele, raman dator. Deci vreau o solutie amplificator , eventual si condesator.

poze cu jucaria :
https://i176.photobucket.com/albums/w...x/IMG_2280.jpg
https://i176.photobucket.com/albums/w...x/IMG_2281.jpg

Last edited by playerul; 19-06-09 at 18:20.
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Old 19-06-09, 18:41   #2
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Default Re: sal ; problema amplificator pt hertz hx-380D

In primul rind pune un aparat de masura si masoare RE, adica citi ohmi are la borne. Poate ai bobinele in paralel si ai 2 ohmi.
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Old 19-06-09, 19:27   #3
playerul

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Default Re: sal ; problema amplificator pt hertz hx-380D

k, merci , o sa masor cum fac rost de un aparat de masurat, dar cred ca este 4+4 am gandesc si eu..ca asa scrie si in specificatiile lui...si in plus..cum as putea sa il leg ca sa fie pe 2 ohm..sa fac din 8..2?
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Old 19-06-09, 19:44   #4
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Default Re: sal ; problema amplificator pt hertz hx-380D

Daca bobinele sunt inseriate ai 8 , daca sunt puse in paralel ai 2 . E fizica elementara.
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Old 19-06-09, 20:55   #5
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Default Re: sal ; problema amplificator pt hertz hx-380D

am gasit un aparat..
http://shop.rabtron.co.za/catalog/images/DT830B.jpg
dar..cred ca e cam aiurit, eu nu prea stiu sa umblu cu el, dar daca las aparatul pe 200 ohm arata 03.5 si daca las pe 2000ohm arata 3...
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Old 19-06-09, 20:57   #6
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Default Re: sal ; problema amplificator pt hertz hx-380D

Da surubelnitza n-ai ? Scoate difuzorul si vezi cum sunt legate.
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Old 19-06-09, 21:10   #7
playerul

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Default Re: sal ; problema amplificator pt hertz hx-380D

lasa un id de mess daca ai...imi e foarte greu sa l desfac..nu ma pricep..si nu vad nici un surub, decat la plus si la minus sunt 4 suruburi acolo ca sa scoti aparatoarea in care sunt bagate plusul si minusul) ...care e rotunda si e de diametru 7-8 cm ..si chiar daca reusesc sa o scot cred ca imi e imposibil sa vad de acolo...asta de la care l am luat a avut statie LRx1.400 ...dar nu stiu pe cat a fost pus..4,2, sau 1..ohm

Last edited by playerul; 19-06-09 at 21:14.
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Old 19-06-09, 21:24   #8
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Default Re: sal ; problema amplificator pt hertz hx-380D

Fii atent: pe rama difuzorului aia de cauciuc, ai 8 dopuri mici de plactic. Scoate-le si sub ele vei gasi suruburile care tin difuzorul.
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Old 19-06-09, 21:32   #9
playerul

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Default Re: sal ; problema amplificator pt hertz hx-380D

gata , am vazut, are 2 borne, + cu + si - cu - .
poze cu firele, am dat cu carioca verde pe +
https://i176.photobucket.com/albums/w...x/IMG_2284.jpg
https://i176.photobucket.com/albums/w...x/IMG_2285.jpg

Last edited by playerul; 19-06-09 at 22:01.
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Old 19-06-09, 22:09   #10
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Default Re: sal ; problema amplificator pt hertz hx-380D

E pus in 2 ohmi. Cauta un amplificator care poate sa duca in 2 ohmi minim 700w.
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Old 20-06-09, 00:02   #11
playerul

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Default Re: sal ; problema amplificator pt hertz hx-380D

merci, asta probabil e o rabla nu ?
http://www.***********/car-sound/ampl...1000-2271.html

Last edited by playerul; 20-06-09 at 00:35.
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Old 20-06-09, 02:02   #12
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Default Re: sal ; problema amplificator pt hertz hx-380D

Deloc, este mai mult decat suficient. A fost testat si aici, raport pret/performanta se incadreaza la un nivel care merita bagat in seama.
Imagine for a sec. sa duca un type r de 15" la un potential de 70 %(550rms) , rezultat remarcabil. Nu intotdeauna conteaza renumele (prost sau bun), conteaza componentele, calitatea lor, temperatura si tensiunea la care rezista in cazul in care sunt solicitate la maxim etc
Desigur are si probleme, as putea sa scriu o pagina despre ele, dar ajunge sa respecti o singura indicatie, nu depasii 70%.
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Last edited by Stage1; 20-06-09 at 02:25.
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Old 20-06-09, 16:20   #13
playerul

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Default Re: sal ; problema amplificator pt hertz hx-380D

cati rms are difu de care vb tu. Sa zicem ca iau statia asta, ma ajuta cu ceva condesatorul sau trebuie sa iau baterie ?
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Old 20-06-09, 18:08   #14
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Default Re: sal ; problema amplificator pt hertz hx-380D

Condensatoarele nu produc curent. Ia-ti baterie si cablu serios de alimentare.
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Old 20-06-09, 20:32   #15
playerul

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Default Re: sal ; problema amplificator pt hertz hx-380D

am gasit un jbl px600,2 , dar scoate pe 1 canal doar in 4 ohm...pot sa leg sub ul pe 4 ohm ? daca da cum

caracteristici jbl px600.2 :
*amplificator 2 canale, tehnologie Crown
*putere:
*2 x 180W RMS (4 Ohm)
*2 x 290W RMS (2 Ohm)
*1 x 663W RMS (4 Ohm, punte)
*amplificare MOSFET
*filtru HPF si LPF (12 sau 24dB/Oct, selectabil)
*circuit DBO (Dynamic Bass Optimization™)
*raspuns in frecventa: 10Hz - 97.5kHz (-3dB)
*distorsiuni: <1%
*domeniu nivel semnal intrare: 250mV - 6V
*raport semnal/zgomot: >95dB
*dimensiuni: 312 x 432 x 66mm
*greutate:aprox 8kg
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