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Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms

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+1  ;o)

Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms

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Cut .......



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C'est vrais !

  tu ne peux donc pas dire que la limitation
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C'est faux ;o)






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  il faut aussi qu'il y ait une protection
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l'ampli.


Crdlt

Chab


Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms


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Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms
Le Mon, 18 Apr 2016 20:03:51 +0200, Olivier B. <  =


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 de 8
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 et  =

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ifiE9%e par  =

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dance
a  =

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nce,  =

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l'ampli

bis : Si les grandeurs E9%lectriques sont dans les limites acceptE9%es p=
ar  =

l'ampli
et par les enceintes, alors les "grandeurs thermiques" le sont aussi.
Comment pourrait-il en EA%tre autrement ?
D'oF9% provient la chaleur ?

Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms
On Tue, 19 Apr 2016 03:50:22 +0200, "Yves Tabouret"

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du fil*
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courant qui le traverse.

Le courant sera le meme que celui de la charge, mais la tension sera


ampli.


charge resistive de 16ohms, le courant est de 625mA, la puissance



On branche maintenant une charge de 8ohms et se place dans les meme



la puissance dans la charge est de 3,125w






on voit donc que se placer dans la meme condition de courant dans la







transposable au tube, je pense que dans ce cas c'est le transfo qui
risque de morfler en premier.

--  
pas de .turlututu. avant l'@robase

Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms
Le Tue, 19 Apr 2016 13:16:46 +0200, Olivier B. <  =


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es  =

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 8 et
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rifiE9%e par
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 la
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sance,
r  =

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s par

et

ter : si les grandeurs E9%lectriques sont dans les limites acceptE9%es <=
3D%> la  =

charge est adaptE9%e !

2 x 8 ohms en sE9%rie 3D% 16 ohms
2 x 8 ohms en parallE8%le 3D% 4 ohms

Si l'ampli E0% des sorties pour 16 ohms et pour 4 ohms, quel est le prob=
lE8%me  =

?

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le
e
e
st

Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms
On Tue, 19 Apr 2016 14:07:12 +0200, "Yves Tabouret"


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Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms
Le Tue, 19 Apr 2016 14:32:59 +0200, Olivier B. <  =


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e, la


par
es par
i.
ujet
s <3D%>  =

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Relire la question initiale.

Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms
On Tue, 19 Apr 2016 20:28:41 +0200, "Yves Tabouret"

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fait suite



courant de sortie admissible pour l'ampli."





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Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms


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Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms
Le Tue, 19 Apr 2016 13:21:02 +0200, Olivier B. <  =


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e 8
t 16  =

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iE9%e par le
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nce
seule
e, donc


ra
 de
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nce E0% :
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...

En associant les deux enceintes l'ampli voit l'impE9%dance E9%quivalente=
, soit  =

16 ou 4 ohms (respectivement sE9%rie et parallE8%le). Choisir la sortie =
de  =

l'ampli qui correspond au type d'association. Que dire d'autre ? Sinon d=
e  =

suivre le conseil de jc-lavau.

Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms
On Tue, 19 Apr 2016 14:14:36 +0200, "Yves Tabouret"





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Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms
Le Tue, 19 Apr 2016 14:35:39 +0200, Olivier B. <  =


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dance
a  =

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nce,  =

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ur
tera
le de
sance E0% :
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nt...
nte,  =

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ie de
n  =

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Je n'ai fait que rE9%pondre E0% la question initiale, tu ne semblais pas=
  =

d'accord avec mes rE9%ponses.

Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms
On Tue, 19 Apr 2016 20:32:15 +0200, "Yves Tabouret"

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Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms
Le Tue, 19 Apr 2016 20:51:07 +0200, Olivier B. <  =


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 la
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sance,
e
ne
pour

able  =

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issance  =

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,
dent...
lente,
rtie de
non
pas
i
Ok, pardon pour la mE9%prise.

Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms

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Slt

Oui je peux comprendre que tu ne sois pas d'accord, mais au vu du  








Crdlt

Chab

Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms


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d'argumenter d'un point de vue electronique


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il n'y a qu'au comptoir qu'avoir de la bouteille donne du poids



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Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms

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Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms


donc revenir en charte, vous affirmez:

"Tu peux brancher les enceintes que tu veux quelque soit leur



pour l'ampli."

Et je maintient que cette "seulle condition" ne suffit pas car la

j'ai fourni un calcul ici






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Re: brancher 2 enceintes 8 ohms sur une sortie 16 ohms
Le Sat, 23 Apr 2016 08:40:58 +0200,

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    certain radioamateur, non ? :-P

    JKB

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