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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?7 q: ?5 m/ O4 v1 @, X
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CONNECTING A SPEAKER SYSTEM
/ j8 ~* k% @ Q8 I( ~0 uYou amplifier has two sets of SPEAKER SYSTEM terminals, which r; A) a t3 D* z5 D% B, t
means you can connect either one or two speaker systems.& C7 O# v2 V) j1 x8 o5 c
NOTE:
: }, j, V: Z6 X. C r0 ~) RTurn the kobes on the speaker terminals by hand. (Do not use a* \, A+ @; d. t( w. T
tool to turn the knobs.): c2 J$ o. s* l6 w9 Y S) t# P3 [
• Connecting One Speaker System
7 M* }6 y8 B9 Q0 T2 f* VNote the following points when connecting a single speaker system.
8 b# C' v1 a/ j3 g* w. f! s— The impedance of each speaker should be between 8 and 16
* [* i* _5 `. i n0 ~ohms. Connecting a speaker with impedance less than 8 ohms
* B( h4 [7 Q1 C. R- {- rcan causes activation of the amplifier’s protection circuitry during2 Q% ^. b' m1 b: ^: O6 Q6 W
play, making normal stereo playback impossible.! p% Q6 K. p$ W4 ~9 a6 ?" U; q
— Connect the right channel speaker to the amplifier’s R terminals,! Y: B6 F8 X9 L- t" `
and the left channel speaker to the L terminals.
- c: W5 d0 V4 ~5 O— The output terminals have positive (+: red) and negative (–: black)
4 X! n" T* s. ]/ q% z, N" ?" o& epolarity. Each speaker must also have the same polarity (+/–).7 z' l' M- J5 T/ m+ Y
Be sure to match the polarity of the amplifier with that of the( l& x" [' D- l6 r7 N. T* c
speakers (+ with +, – with –) when making connections.
& V2 p* I. w" S, m7 X• Connecting Two Speaker Systems7 o: E! |! V/ p5 b: Q$ m) e5 X
Make sure that the impedance of each speaker is at least 16 ohms.( `' T1 S! G, d# p. U
Connecting a speaker with impedance less than 16 ohms can causes
( c# `) f& e/ w) \9 L5 t( J+ _activation of the amplifier’s protection circuitry during play, making
" J' E0 d* i9 t7 B7 {4 snormal stereo playback impossible.
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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) K3 F2 y* R& \; Y% v3 M3 n7 t+ b
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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