har monterat ihop en ICEpower 2000AS2 HV modul i en låda. Men vill dubbelkolla med experterna här hur jag ska koppla RCA ingångarna mot modulens ingångar då den är balanserad.
I dokumentationen står det:
11.1 Audio Input
The audio inputs of the 2000AS are high impedance fully balanced inputs including a non-inverting and inverting signal input and a signal ground.
The audio inputs can be used in both a semi-balanced input configuration and in a fully balanced configuration. In semi-balanced configuration, it is recommended to connect the non- inverting input to a single ended signal source and use the inverting input as ground sense on the signal source ground reference.
In both semi-balanced and in fully balanced configuration, the signal ground should be connected to ground on the front-end PCB.
To prevent ground loop related noise and hum problems, the signal ground is fitted with low value series resistors on the module i.e. the signal ground wire must not carry any additional current.
The recommended connection to the audio input is shown on below.
To get best possible suppression of noise and mains related hum in the end-product and to utilize the module common mode rejection, proper attention must be put into signal source output impedance.
För tillfället har jag tvistat ihop inverting input med signal ground mot rca ingångens skärm. Det verkar fungera bra med min jordade denon som försteg, men när jag använde en ojordad kina dac som försteg så upplevde jag hum och brus.
Jag undrar om jag istället ska koppla signal ground till chassits jordpunkt i icepower chassit eller att inte ansluta den alls?
