本帖最后由 Jwang 于 2013-4-19 09:56 编辑
Definition of a balanced connection:
A balanced tone arm cable must have two conductors and a separate shielding.
This shielding has to connected separately to ground and should never be connected to the plus or
Minus wires- otherwise you will get heavydistortions, cause the shield will work as antenna!
Balanced cables can be connected at both the RCA or the XLR plug.Both inputs sockets are
Internally connected. The RCA inner pin is connected to Plus, the outer ring to Minus.
The pins on the XLR sockets are international standard: 1 =Ground, 2 =Plus 3 =Minus.
The only advantage of using XLR is that the third pin 1 can be used for ground connection of the
Shield. At RCA the shield must be connected separately to the big ground pole plug connector.
A tone arm cable that has already two wires and be converted simply by connecting the shield to
Ground( the black pole plug at the Basis) instead of to the outer ring at RCA what is minus.
厂家强力推荐用平衡的。这机的平衡是1地2正3负。机内的RCA和平衡插座都是联在一起的。也就是说,只要是接地的是单独的,不管RCA的接头还是平衡的接头。这就是厂家定义的平衡线。
At balanced connections the adjustments have to be made at both 12 Pin Dip switches left
And right. The switch Dip No.12 has to be OFF.
要用平衡的话,机里的DIP双列开关上的12必须放在关闭上。
Unbalanced connection:
An unbalanced tone arm cable is normally coaxial with one conductor and a shielding.
Cables with two inner wires can be converted simply by separating the shield from minus.
Unbalanced cables should be connected to the RCA plug. The RCA inner pin is connected to inner
wire, the outer ring to the shielding.
MM cartridges must be connected in the unbalanced mode.
At unbalanced connections the adjustments has to be made at the left 12 pole Dip switch.
The right Dip switch No.12 has to be ON to connect the minus input to ground.
单端接法必须用RCA线。MM的唱头必须用单端的接法。这样,DIP上12必须打开。
In balanced mode both the Dip switches marked with “Unbalanced”and “Balanced”
No. 1 to 9 per input channel must be adjusted in the same way to get the same load resistance for
Both the positive and ngeative input!
在平衡输入时,两个DIP(单端和手衡)上1至9都必须调在同一位置。见下图和表。
MC的唱头推荐的输入阻抗为20到250欧。
We don’t recommend higher values than 9,4 k Ohms in balanced mode, cause
This may cause higher noise and maybe unstable operation of the input stage.
厂家不推荐在平衡输入下输入阻抗为9。4K及以高于9.4K。
In unbalanced mode only the left Dip switches No 1 to 10 per input channel must be adjusted.
At the right Dip switch only the switch No. 12 has to be switched ON.
That shortens the negative input to ground.
单端输入下,只有左边的DIP中的1至10要用。(图中红色的)。右边的DIP(黑色的)中的12要打开。
MM Cartridges can only be used in unbalanced mode!
For MM cartridges we recommend values of 47 k, what means all Dip switches left to OFF.
厂家推荐MM唱头用47k,这样意味着所有开关都在关的位置上。
The input capacity in unbalanced mode can be adjusted on the left DIP switch No. 12:
Position,, Off“=100pF, ,,On“=320pF, Number 11 at theleft dip switches to 570 pF.
首先,你得用唱头厂家推荐的输入容量减去你唱臂线的电容,然后得出你要调节的电容量。在单端输入时,左边的DIP中12在关时,输入容量为100pF,在开时为320pF,11打开为570pF。
For balancedmode you can use the Dip switches Number 11 left And rightto in increase the input capacity from 100 to 570 pF.
在平衡输入时,同时打开左和右边的DIP中的11为570pF。
调增益,见下图。
低频过滤开关。打开,2Hz以下给滤掉。关上,20Hz以下给滤掉。
厂家推荐的些常用的设定。
MC,低输出,平衡,94欧,+18dB MC,中等输出,平衡,950欧,+12dB MC,中等输出,单端,1K,+12dB MM,高输出,单端,47k,320pF,+4dB
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