Setting up my RX-v1800 with Polk Monitor 70 (1 Viewer)

[xiaobao12]

I have a RX-V1800 that I just set up with my new Polk Monitor 70s.
I hear cracking and distorting coming out of the 2nd tweeter from the top on both speakers.
I am testing using the track I've attached. (EDIT: I cannot attach sound files. It's the first mvt from a Mendelssohn Quartet by the Guarneri Quartet.
I am using banana plugs - http://www.monoprice...&seq=1&format=2
I have made sure the + / - connections are correct.
The sound is playing from my computer, thru bluetooth to a Logitech Bluetooth adapter, which is connected RCA --> v1800.
The sound setting on the 1800 is stereo.
I listened to the track with headphones to make sure it's not the recording - it isn't.
Why is it cracking? Did I receive damaged speakers? (Bought from Newegg and the boxed were slightly beat-up).
Thank you for any advice.

 

[schan1269]

Try the track via a physical connection.Does the computer have HDMI? If so, use that.Do you have any other sources? What about FM?What kind of track is that? FLAC? MP3?

 

[xiaobao12]

Hi Schan,

I discovered that it was the bluetooth connection. I played the same track: computer, minijack to RCA on v1800 and it was no problem.

The track was a mp3 256kpbs - essentially lossless right? =d

Is minijack lossless? I did a comparison by streaming a track from youtube on my Western Digital Media Player (HDMI to TV --> optical out to v1800) VERSUS minijack from computer (same track).

Result - it was very hard to tell...

Thoughts?

 

[schan1269]

Lossless is irrelevant after the DAC. Mini-Jack is analog...after whatever DAC was used.

 

[xiaobao12]

Lossless is irrelevant after the DAC.Mini-Jack is analog...after whatever DAC was used.

hmmm....could you elaborate? I'm confused...I know that DAC stands for digital audio converter....which is my receiver, right?

EDIT: DIGITAL ANALOG CONVERTER..!!!!

 

[schan1269]

Does that mean you answered your own question?

 

[xiaobao12]

Well...sort of. So, the track coming out of my computer has been DAC'ed, then is minijacked out in analog to my v1800. right?

I don't understand your statement: "loss is irrelevant".

 

[schan1269]

Lossless applies to digital transmission from source to AVR.Mini-Jack is analog. Meaning the source was the DAC.