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Pm7200说明书里指出连接的箱子阻抗一定要在8欧以上是怎么回事?! ^0 w, ^$ I1 i( g
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CONNECTING A SPEAKER SYSTEM
0 l; m: L2 O$ R' u7 G EYou amplifier has two sets of SPEAKER SYSTEM terminals, which7 K) i8 D1 N& R ~' M9 ~' [' q$ i
means you can connect either one or two speaker systems.
2 v0 n9 k9 O# j! N& X0 vNOTE:
9 c1 n7 \6 D. ~2 x( F4 Y7 ZTurn the kobes on the speaker terminals by hand. (Do not use a, p( t8 A- O& I9 W6 y/ D, V
tool to turn the knobs.)
4 a4 R: i* q6 H2 y7 d1 X6 T9 _• Connecting One Speaker System& B9 m% e/ F. }6 O) a1 o/ d1 P
Note the following points when connecting a single speaker system.
1 D r* e0 W6 `- F$ w# i— The impedance of each speaker should be between 8 and 16% @% T* {0 `/ K5 Y# e
ohms. Connecting a speaker with impedance less than 8 ohms- ?- v( s- l8 }
can causes activation of the amplifier’s protection circuitry during! m/ V3 {; k3 N
play, making normal stereo playback impossible.
, g! F/ z1 G8 t7 h' `0 X; y— Connect the right channel speaker to the amplifier’s R terminals,
$ J' Y8 r6 d# W( Z7 q m& sand the left channel speaker to the L terminals.
4 ^( l! Y& u2 Y& X— The output terminals have positive (+: red) and negative (–: black)
4 Y- }) G# E, ^7 A6 L, Qpolarity. Each speaker must also have the same polarity (+/–).
1 T6 _1 h9 l- G" X& n' `- T/ RBe sure to match the polarity of the amplifier with that of the
5 Q, G, S2 y: y" e6 H* R" S, ~speakers (+ with +, – with –) when making connections.
" [$ u1 p2 _* r9 O$ N• Connecting Two Speaker Systems
( {) s, F; G6 z! A7 N- b9 P0 a6 eMake sure that the impedance of each speaker is at least 16 ohms.+ F" e8 t$ {# z, l
Connecting a speaker with impedance less than 16 ohms can causes
/ B/ _' U' C: a) X7 e" B7 Kactivation of the amplifier’s protection circuitry during play, making
2 k2 V {/ ~ }' F9 ]5 [ Bnormal stereo playback impossible.
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5 t' a# z; I, [* ^0 A; I说明书里没有写到任何4欧的事情,还明确说小于8欧会进行保护,我看其他功放都是要求不低于4欧,同时602/601也都是4-8欧的箱子,问下surerman这个有影响吗1 d1 i* T# G& y7 d" E
另外,在马兰的大陆主页上却有PM7200在4欧时输出功率为150W的规格项,很是矛盾啊0 e$ r! j$ ], K3 R
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