Trending Lyricist I

Answered

Distorted sound-Sonos Port

Forum|Forum|4 years ago
June 2, 2022
40 replies
1459 views

I'm using my Sonos Port basically as a pre-amp, powered by an Acurus A150 2 channel amplifier, and an Adcom GCD-750 CD player. I'm getting really distorted sound.

I've tried taking the Source Level down to 1. I've played around with the EQ. Nothing is working. When I remove the Port and connect it to my volume controller, it sounds perfect.

Any suggestions?

This topic has been closed for further comments. You can use the search bar to find a similar topic, or create a new one by clicking Create Topic at the top of the page.

Best answer by GuitarSuperstar

How exactly is the Port connected to the CD player?

Show previous replies

S

sabbiamjAuthor

Trending Lyricist I

I was curious as to the nominal output level of the CD player’s RCA outputs, to see whether that could explain the behaviour.

Have you tried inserting your ‘ancient’ passive volume control between the CD player and the Port?

I haven't. I'm trying to think how I'd rig that. I'd still need the out to the Amplifier from the Port How would I wire the CDP and passive volume control?

S

sabbiamjAuthor

Trending Lyricist I

You could independently test the Port’s Line-In, e.g. using the headphone output from a phone.

Jumping in because I did not see an answer to the quoted. This is an easy way to test the line in circuitry of the Port. Have you done that?

I have not. So I'd need an RCA(s) to single headphone jack?

ratty

Well, I’m assuming the control is either RCA-in/RCA-out, or it’s combined with an input selector so it’s multiple RCA-in with a single stereo RCA-out. You could post some more info if relevant.

Either way, you’d just connect the CD player to an input and run the control's output into the Port’s Line-In. Set the volume to full, then lower it until (hopefully) the distortion goes away.

K

Kumar

I have not. So I'd need an RCA(s) to single headphone jack?

Yes.

S

sabbiamjAuthor

Trending Lyricist I

I have not. So I'd need an RCA(s) to single headphone jack?

Yes.

Just went through my old cord box and I think that one got tossed in the last purge. Ugh.

S

sabbiamjAuthor

Trending Lyricist I

Well, I’m assuming the control is either RCA-in/RCA-out, or it’s combined with an input selector so it’s multiple RCA-in with a single stereo RCA-out. You could post some more info if relevant.

Either way, you’d just connect the CD player to an input and run the control's output into the Port’s Line-In. Set the volume to full, then lower it until (hopefully) the distortion goes away.

Keeping the Port volume control on Variable?

ratty

Well, I’m assuming the control is either RCA-in/RCA-out, or it’s combined with an input selector so it’s multiple RCA-in with a single stereo RCA-out. You could post some more info if relevant.

Either way, you’d just connect the CD player to an input and run the control's output into the Port’s Line-In. Set the volume to full, then lower it until (hopefully) the distortion goes away.

Keeping the Port volume control on Variable?

Yes. If successful you’d simply be using the old passive control as a fixed attenuator between the CD player and the Line-In. Normal volume control would be in the Port.

S

sabbiamjAuthor

Trending Lyricist I

Well, I’m assuming the control is either RCA-in/RCA-out, or it’s combined with an input selector so it’s multiple RCA-in with a single stereo RCA-out. You could post some more info if relevant.

Either way, you’d just connect the CD player to an input and run the control's output into the Port’s Line-In. Set the volume to full, then lower it until (hopefully) the distortion goes away.

Keeping the Port volume control on Variable?

Yes. If successful you’d simply be using the old passive control as a fixed attenuator between the CD player and the Line-In. Normal volume control would be in the Port.

Well by golly it worked! Perhaps it was that 3V versus 2.2V output on the unbalanced that was causing the issue. Thank you so very much!!!