Is it possible for a CD player outputs to null?

DRC · 11th December 2007

I just re-hooked up my gear from being in another room. After wiring up my mains I put in a CD to give it a listen. It sounds a bit off. I go to check mono and it's gone! All I hear is a bit of hit-hat and snare at whisper volume. I mute the left, all I hear is the right channel. I mute the right, all I hear is the left. What in the hell could be going on?

I'll give the signal flow:

Denon Balanced outs to a Coleman switcher.

Coleman outs to a pair of three way split cables.

Left channel from the Coleman to Amp#1 feeding the tweeter and mid-range driver and to Amp #3's left channel feeding the bass driver.

Right channel from the Coleman to Amp #2 feeding the tweeter and mid-range driver and to Amp #3's right channel.

I am stumped and I doubt the mono switch on the Coleman went bad. Totally stumped.

loujudson · 11th December 2007

Something is out of polarity between the CD abd the monitors. Check your connections. Possibly as simple as a TRS plug not in all the way. Change out all the cabling and see what changes.

Apparently you cannot hear the out or polarity in stereo. It brings tears to my eyes to listen to out of polarity sound. Out of polarity = cancellation in mono - one good reason to check all work in mono before sending it out.

Check your wiring and let us know!
L

tINY · 11th December 2007

Oh come on. I love the feeling of my head being crushed and pulled apart at the same time.

Sometimes I wire my mains out of phase just for fun....

-tINY

DRC · 12th December 2007

I thought the low end sounded weird as hell but I also didn't have them up on stands or spaced correctly. It must be the amp to speaker connections then. I checked everything else.

Thanks guys.

DRC · 12th December 2007

Quote:

Originally Posted by DRC

I thought the low end sounded weird as hell but I also didn't have them up on stands or spaced correctly. It must be the amp to speaker connections then. I checked everything else.

Thanks guys.

The connections were fine. I had the Coleman on a different power strip so the mono and headphone functions didn't work. It's fine. I just have to get use to this room.

Led · 12th December 2007

Quote:

Originally Posted by tINY

Oh come on. I love the feeling of my head being crushed and pulled apart at the same time.

Sometimes I wire my mains out of phase just for fun....

-tINY

Try encoding it into mid/side and then listen just to the side component while rocking back and forth. I sometimes fall off the chair. It's awesome. thumbsup

DRC · 12th December 2007

You guys!!!!!!

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11th December 2007	#1
DRC Lives for gear Joined: Jan 2006 Location: Chicago Posts: 714 Thread Starter	Is it possible for a CD player outputs to null? I just re-hooked up my gear from being in another room. After wiring up my mains I put in a CD to give it a listen. It sounds a bit off. I go to check mono and it's gone! All I hear is a bit of hit-hat and snare at whisper volume. I mute the left, all I hear is the right channel. I mute the right, all I hear is the left. What in the hell could be going on? I'll give the signal flow: Denon Balanced outs to a Coleman switcher. Coleman outs to a pair of three way split cables. Left channel from the Coleman to Amp#1 feeding the tweeter and mid-range driver and to Amp #3's left channel feeding the bass driver. Right channel from the Coleman to Amp #2 feeding the tweeter and mid-range driver and to Amp #3's right channel. I am stumped and I doubt the mono switch on the Coleman went bad. Totally stumped. __________________ "One could hate digidesign and like protools." A quote from mtstudi@pacbell ____________________________________ Michael

11th December 2007	#2
loujudson Lives for gear Joined: Feb 2007 Posts: 2,684 2 Reviews written	Something is out of polarity between the CD abd the monitors. Check your connections. Possibly as simple as a TRS plug not in all the way. Change out all the cabling and see what changes. Apparently you cannot hear the out or polarity in stereo. It brings tears to my eyes to listen to out of polarity sound. Out of polarity = cancellation in mono - one good reason to check all work in mono before sending it out. Check your wiring and let us know! L

11th December 2007	#3
tINY Gear Guru Joined: Jul 2004 Location: Orygun Posts: 10,230	Oh come on. I love the feeling of my head being crushed and pulled apart at the same time. Sometimes I wire my mains out of phase just for fun.... -tINY

12th December 2007	#4
DRC Lives for gear Joined: Jan 2006 Location: Chicago Posts: 714 Thread Starter	I thought the low end sounded weird as hell but I also didn't have them up on stands or spaced correctly. It must be the amp to speaker connections then. I checked everything else. Thanks guys.