ZALMAN TNN 300 User Manual page 31

9) Installing the Digital Amp (Optional)
※ ※ Note
▶ Connect only passive speakers (without integrated amp) with 4~8Ω impedance.
▶ Connecting the PSU's 12V 4-pin connector and an external DC power source at the same
time can damage the amp. Therefore, this product does not come with an external power adapter.
(If you need one, we recommend a 19V 3A SMPS type adaptor.)
▶ If the sound card's output level is low (50mV or less), the Amp goes into sleep mode.
In this case, set the Amp's sleep mode jumper to OFF.
▶ Set volume to about 80%, then use the volume control within the OS for adjustments.
① Remove the Amp Cover and install the Amp Panel on the Rear Plate.
② Insert the Digital Amp from the inside of the case to the Amp Panel as shown in the diagram
and use the bolts to fasten it on the Amp Block.
AMP Cover
Rear Plate
AMP Block
AMP Panel
Digital AMP
Bolt (BH M2.3x6)
Bolt (PH M3x5)
TNN 300