nash123 wrote:
Hi,

I connected my Gateway 610X media center computer to my Harman Kardon
AVR315 (I have B&W CM4 speakers) via the digital optical audio using a
Toslink cable.

http://support.gateway.com/s/PC/TVMe...900210nv.shtml

http://harmankardon.com/product_deta...%20135&sType=C

http://www.bwspeakers.com/index.cfm/...Model%20CM%204



I am getting the mid ranges and the trebles but I am not getting any
bass. What do you think is the problem?

I'm willing to bet it's your Harman Kardon AV receiver. It's not broken,
just mis-configured. Since you're using BW CM4s then the Harmon should
be configured to run with stereo speakers only, no subwoofer, no 5.1 7.1
etc. With that configuration, all audio frequencies will go to the left
and right channels.

CD