no right channel output

An area for people to discuss Scope related problems, issues, etc.

Moderators: valis, garyb

Post Reply
oakstar
Posts: 49
Joined: Sat Dec 21, 2002 4:00 pm
Location: Israel

Post by oakstar »

LII/ps1/sfp 3.1c here

the right output channel in my ps analog source (and 24-bit wave source) don't work.. everything's routed correctly, just the r-out doesn't seem to work.. if i connect it alone, i hear nothing...
is this a bug?
or am i doing something wrong?

routing:
i have a mic (using an xlr output cable converted to a 1/4") connected to the analog input port of my lunaii..
in the sfp project, i have ps analog source (l and r) to my recording mixer v2 (if you know it, it came with my luna 3.01 software) on channels 3&4 stereo, each panned hard L&R. the mixer L&R mix outs are connected to the ps analog dest module.

there's no problem with my standard wave source source module, so it's nothing to do with the mixer or the analog dest...

all i get out of the R-out is a hiss.. the level meters in the mixer show this hiss on right channel, and in the left, full input audio..

please help, this is troubling me for a few days now..
siberiansun
Posts: 437
Joined: Tue Oct 01, 2002 4:00 pm
Location: Sweden

Post by siberiansun »

have you tried to pull out the 1/4" plug, just half an inch from the luna input? have you tested your cable in another stereo 1/4" input? since the analog input on luna is a stereo connection i'm not so sure it'll work unless you have a stereo source, hence the lack of sound in R.
try to plug your mic into a mixer and then route from the mixers' L-R out via a Y cable (two x 1/4" mono to one 1/4" stereo) into luna.
i think the issue here is that your 1/4" plug doesn't carry signal in both tip and ring.
good luck
oakstar
Posts: 49
Joined: Sat Dec 21, 2002 4:00 pm
Location: Israel

Post by oakstar »

well i don't really know much about this stuff but..

the mic itself is unattachable from the cable using a xlr socket converted to 1/4"...
the cable is unbalanced which means it's tip/sleeve ?
so it's a mono source, i'm guessing.. ?

but, if i do as you told me, pulling the plug out a bit, it works in stereo... and even when i record i get different waves in both left and right channels...

please confirm my statements...
and thanks
siberiansun
Posts: 437
Joined: Tue Oct 01, 2002 4:00 pm
Location: Sweden

Post by siberiansun »

but, if i do as you told me, pulling the plug out a bit, it works in stereo... and even when i record i get different waves in both left and right channels...
you don't get a stereo signal, unless you use a stereo microphone which i'm pretty sure you're not.
i don't know much about cables, and even less about welding (?) cables but i did learn (the hard way) that a mono signal into a stereo jack often results in lack of signal in either L or R.
try to "re-weld" your cable so the lead wire is attached to both the ring and the tip. providing of course you have a stereo 1/4" plug.
this way lunas´ stereo input can "hear" both the ring and the tip.
this is a longshot, and i've never tried it myself but it seems reasonable.

by the way we had 29,9 degrees celsius below this saturday in Karlskoga, Sweden...
now you think about that.....
User avatar
garyb
Moderator
Posts: 23380
Joined: Sun Apr 15, 2001 4:00 pm
Location: ghetto by the sea

Post by garyb »

or...get an adaptor from mono to stereo(since that is a stereo input and you may want to use mono devices like that mic ,or another instrument from time to time.aaaannd....learn to use a mixer and pan that mono signal as suggested above.

even though the world you're using is virtual,it pays to know how these things(gear)work and connect in the real world as the virtual world copies the real.become an engineer...(good luck :wink: )
oakstar
Posts: 49
Joined: Sat Dec 21, 2002 4:00 pm
Location: Israel

Post by oakstar »

or...get an adaptor from mono to stereo
what kinda adaptor, a simple plug that connects to the 1/4" converting it from mono to stereo (or unbalanced to balanced) ?
..become an engineer...(good luck :wink: )
that's the plan! :smile:
User avatar
garyb
Moderator
Posts: 23380
Joined: Sun Apr 15, 2001 4:00 pm
Location: ghetto by the sea

Post by garyb »

peace to you, but,have you checked the manual?
here's some more reading: http://www.rane.com/library.html#rnotes
siberiansun
Posts: 437
Joined: Tue Oct 01, 2002 4:00 pm
Location: Sweden

Post by siberiansun »

the simplest answer would actually be:
do NOT pan your analog source hard L and R.
the signal you get from analog left does not differ from what you would get from a clean mono signal.

SO route analog source L to a mono channel in SFP.
that's it.
oakstar
Posts: 49
Joined: Sat Dec 21, 2002 4:00 pm
Location: Israel

Post by oakstar »

ok, i got all of that..

now my question is this..
what if i don't use the unbalanced 1/4" cable, and use a xlr/m to xlr/f cable to connect to a mixer?
oakstar
Posts: 49
Joined: Sat Dec 21, 2002 4:00 pm
Location: Israel

Post by oakstar »

it's a cannon xlr-3 male connector on the microphone side...

i'm just asking to get a little more info on these things...

garyb.. thanks for your link as well..
User avatar
garyb
Moderator
Posts: 23380
Joined: Sun Apr 15, 2001 4:00 pm
Location: ghetto by the sea

Post by garyb »

if you mean to a hardware mixer,then fine.use a 1/4" out to your card or xlr-1/4" depending on the outputs on your mixer.really,you need the hardware mixer or a mic preamp in front of the card to raise the very weak mic signal to line level.if you use the card as a mic pre,it'll be very noisy and not sound so good....
zezappa
Posts: 205
Joined: Sun Sep 29, 2002 4:00 pm
Location: Via Lactea to Lisbon

Post by zezappa »

now my question is this..
what if i don't use the unbalanced 1/4" cable, and use a xlr/m to xlr/f cable to connect to a mixer?


the difference will be only in the mixer channel amongst an unbalanced or a balanced signal but it will remain a mono signal (see CW forum too)
Post Reply