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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?/ t/ |9 `8 @9 I
$ |% n9 q | o; [# H, wCONNECTING A SPEAKER SYSTEM
* S3 F# `, E+ m. F2 e- S- rYou amplifier has two sets of SPEAKER SYSTEM terminals, which
# i% b' z* X! z" G. gmeans you can connect either one or two speaker systems.! C+ I0 G/ |! F: G9 R$ D$ J
NOTE:6 o* Q/ _( B1 a0 M$ M: G* w6 J
Turn the kobes on the speaker terminals by hand. (Do not use a& V& c) V: C3 ~* |7 P
tool to turn the knobs.)
( x1 U/ }3 o* @- [% E• Connecting One Speaker System& {+ H! A6 U# ~5 D2 S- F; k
Note the following points when connecting a single speaker system.) w* C, o9 c6 k" x: j! Z
— The impedance of each speaker should be between 8 and 16
2 f, v* B, O6 P3 }3 K1 Johms. Connecting a speaker with impedance less than 8 ohms
b/ z$ L1 J" y( x2 T4 @can causes activation of the amplifier’s protection circuitry during
& X- m5 f- }$ o' Jplay, making normal stereo playback impossible.
* |. m. K/ p8 V7 s— Connect the right channel speaker to the amplifier’s R terminals,
8 K2 y: d% I6 V {6 e, i* Xand the left channel speaker to the L terminals.
& F) n" d2 `% a+ ]6 Y8 b" z: w— The output terminals have positive (+: red) and negative (–: black)9 \6 x" a: _# E" g- F* H2 j
polarity. Each speaker must also have the same polarity (+/–).. F8 s& s9 b) f3 h6 I! U
Be sure to match the polarity of the amplifier with that of the
& G A( q7 m. O' x1 v! L; lspeakers (+ with +, – with –) when making connections.8 B% D" H* e# e6 _7 C& m9 a
• Connecting Two Speaker Systems( P# T* ]- u) k
Make sure that the impedance of each speaker is at least 16 ohms.
/ K3 Y B* ]$ H* |/ pConnecting a speaker with impedance less than 16 ohms can causes
" G# ^" b8 v* p3 c4 s) Y" U9 z4 eactivation of the amplifier’s protection circuitry during play, making
8 x3 r9 L0 W$ F4 g. D8 O; inormal stereo playback impossible.! p/ A" C1 y: I# l: R" d4 s& ]
' _+ V$ |( I7 B1 B8 V, J( @
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9 \4 F i7 o( n! p: u" H" x
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
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