New member

[Kbunting]

Question I tried to hook this up and I pulled my record player into it.. and took another cable to the surround sound. The CD-4 light never turned on could only hear it on bypass and left or right audio knob did nothing..

What am I not doing correctly

My Surround sound has 4 plugs

Input 2

Output 2

The demodulator has (shown in the photo)

Clearly I do not have the technical expertise to even attempt to try to understand the posts above as I need a doctorate and quadraphonic

 

[Sonik Wiz]

Question I tried to hook this up and I pulled my record player into it.. and took another cable to the surround sound. The CD-4 light never turned on could only hear it on bypass and left or right audio knob did nothing..

What am I not doing correctly

My Surround sound has 4 plugs

Input 2

Output 2

The demodulator has (shown in the photo)

Clearly I do not have the technical expertise to even attempt to try to understand the posts above as I need a doctorate and quadraphonic

I can't tell much from the pics but to hook it up right the turntable plugs into the top two RCA jacks. The decoded outputs are taken from the bottom four jacks & plug into the appropriate input jacks on your receiver.

If it is in the stereo bypass mode the CD-4 light will not come on and no sound will be output, except for the stereo bypass outs on the CD-4 unit.

Unlike stereo or matrix QS/SQ etc records, CD-4 requires a compatible cartridge & stylus, and the TT should have low capacitance cables for best operation. I won't go into more detail cuz there's a couple of extensive threads started started by @edisonbaggins with all this info.

 

[Kbunting]

Here’s some other pics

 

[Sonik Wiz]

Here’s some other pics

If your TT cables are the black ones plugged into the top 2 phono jacks then that is good. All else seems to be wrong.

You have cables plugged into the stereo bypass jacks. As I said before the decoded CD-4 outputs are taken from the bottom four jacks. Renumber this is quad, 4 ch, and you have front left/right and back left/right. You need two conventional 2 ch cables for the CD-4 output output and plug those into the four matching input jacks on your receiver.

Two suggestions: In your profile there is a place to list all your gear. This is good for others to check when they are trying to help you. For example, I don't even know if your receiver has the required 4 ch inputs because I don't know the model number.

Also this thread is way off course from a new member introduction. You would probably get a better response if you split these questions into a new thread.

And make sure theCD-4 box is not on bypass when you try to play a CD-4 record.

 

[Sonik Wiz]

My bad I see you did list your receiver in the 1st post as a Yamaha GTR-6030 (actually it's a HTR-6030). Still a good idea to keep all the equipment info in one place, in your profile, easy to find. Anyway I DL'ed the owners manual and you do have the necessary MCH input jacks to use with the CD-4 demodulator. They are on the bottom towards the left side.

FWIW I have an AT LP-120 TT like you and an AT 440-MLA cartridge. It plays CD-4 just fine. Is this a TT with built in record pre-amp? On mine you have to take the platter mat off & look through the platter holes for a little slide switch to turn the pre-amp on/off. You definetly want it OFF to use with CD-4.

 

[Kbunting]

Copy.. so my question is do I plug the record player into the Harman Cardin and then plug everything else into the MCH?

Then will I get true quad? For discrete 4.. updated the stylus too!

Can’t find the place on the profile but I’ll look to add my gear

 

[Kbunting]

My bad I see you did list your receiver in the 1st post as a Yamaha GTR-6030 (actually it's a HTR-6030). Still a good idea to keep all the equipment info in one place, in your profile, easy to find. Anyway I DL'ed the owners manual and you do have the necessary MCH input jacks to use with the CD-4 demodulator. They are on the bottom towards the left side.

FWIW I have an AT LP-120 TT like you and an AT 440-MLA cartridge. It plays CD-4 just fine. Is this a TT with built in record pre-amp? On mine you have to take the platter mat off & look through the platter holes for a little slide switch to turn the pre-amp on/off. You definetly want it OFF to use with CD-4.

I looked and all I see is 115 or 230.. what one should it be turned to

 

[Sonik Wiz]

I looked and all I see is 115 or 230.. what one should it be turned to

If you live in the US of A choose 115. You certainly must know what voltage you have in your house....

 

[Sonik Wiz]

I looked and all I see is 115 or 230.. what one should it be turned to

Also I see that newer AT LP-120 TT's might have the switch on the back panel. A better way to do it. Set the switch to PHONO not LINE.

Do you have a manual to refer to?

 

[Kbunting]

ok.. I hooked everything up and I get a buzz.. so I wonder if I need different speaker wires

 

[Kbunting]

I’ve turned it on.. turned it off plugged it in every single way.. what am I doing wrong

 

[Sonik Wiz]

OK I think I'm exhausted here. Anyone else want to jump in?

 

[Kbunting]

OK I think I'm exhausted here. Anyone else want to jump in?

Thank you for all your help.. if I can’t get this figured out I will be selling a Harman kardon 44plus!! Lol

 

[Kbunting]

The BUZZZING stopped!!!’

 

[Kbunting]

Thank you again for taking the time to walk me though this.. it’s epic…. I mean EPIC!!! I cannot wait to play all my quad..

 

[RustyStatic]

Well played, @Sonik Wiz - I was watching from the sidelines there (couldn’t help); your latest efforts to help others didn’t go unnoticed. Just wanted to say that.

Enjoy, @Kbunting!

 

[Sonik Wiz]

Well played, @Sonik Wiz - I was watching from the sidelines there (couldn’t help); your latest efforts to help others didn’t go unnoticed. Just wanted to say that.

Enjoy, @Kbunting!

Thank you that's very kind of you to say!

And Bon Voyage to @Kbunting as you sail the quadraphonic waves.