Topic: SVU-1 Calibration affected by heat?

[blu666z]

Been having a little issue with my SVU-1 lately and wanted to see if anybody else had experienced it.  I have been calibrating my SVU-1 out of my bag.  I set the first red light to match up with the -3db light on the UA-5.  What I have found is after about 20-30 at a show, the SVU-1 will light up both red lights fairly brightly before the UA-5 light is coming on.  Does it make sense that a build up of heat in the bag from the UA-5/JB3/SVU-1 could be affecting the metering of the SVU-1?  If so, I can easily rememdy it by letting everything warm way up before I calibrate it, but I wanted to make sure I was on the right path before I did.

-Kevin

[mmmatt]

I never had that issue with mine, and I used mine (svu-2) a lot in my bag.  Are you connected to your ua-5 or to your recorder?

Matt

[blu666z]

UA-5

[mmmatt]

UA-5

This leaves room for error.  First off, the headphone out shares an amp with the rca outs, so if you are patching someone out of either, then your are reducing the signal to the svu.  Secondly you have adjustments for the output of the rca and headphone amp, and there is a monitor button that does something... can't remember exactly what though.  Your best bet all around is to run the svu off of your recording device.  This will help with a consistant level, monitor the level of the recording directly, and it is a great way to troubleshoot your recorder.  I assume you are using a jb3?  If the lights ain't flikerin', you aint recordin'!

Just my 2 cents.

Matt

[blu666z]

I would still have the same problem of the calibration changing no matter of where it is in the line. 

-Kevin

[mmmatt]

I would still have the same problem of the calibration changing no matter of where it is in the line. 

-Kevin

if it is heat, yes.

Matt

*edit*  you may want to post this question on the team svu-x thread, and see if anyone else is having this problem.

[blu666z]

Update.  Been working on recalibrating the SVU tonite.  I only had the left RCA jack on the back of the SVU connected and the REC Source button on the UA-5 set to Analog.  If I turned the right gain knob on the UA-5 it would affect the left meter on the SVU.  ie.  The right gain was at minimum and I had the left gain adjusted to have the SVU at 0 DBs.  If I turned the right gain all the way up, the left meter on the SVU would jump up another light to +3 DBs. 

By setting the REC Source to Digital, moving the right gain on the UA-5 had no effect on the left meters.  Some sort of bleed through in the UA-5 when you have it set to Analog.

Can anyone explain or confirm this?

-Kevin

[dklein]

Can anyone explain or confirm this?

-Kevin

Was the monitor button lit? - try again with monitor off.

[blu666z]

Monitor was on, default when unit is turned on.  I'll try again tomorrow with it off.

-Kevin

[willndmb]

can't really help you with the issue but i know 99.9% of everyone i talked to said use the svu and jb3 line out, not the ua5
so as mentioned that could be part of the prob

[blu666z]

As long as the UA-5 is used with the same settings as it had when you calibrated, you should be fine.  My problem is that the SVU was calibrated with the REC source in the digital position but that later got set to Analog.  Why add the JB3 between the UA-5 and the SVU-1?  Seems like that just adds another layer of settings that you have to keep the same as when you calibrated it. 

-Kevin

[willndmb]

well i was told that if you use it at the end, you will have the exact settings everytime
and if for some reason one of your parts isn't working right you will prob notice sooner because the svu will not light up
for example if the jb3 stops working with the svu before it you will not know because the svu will still show activity, but if the jb3 stops working and the svu is last you will see because the li8ghts will stop working too

[blu666z]

Good point.

-Kevin

[mmmatt]

I tend to beat this one like a dead horse, but you are monitoring your recording and not your pre.  It only makes sence to connect to the recorder.

Matt

[blu666z]

I tend to beat this one like a dead horse, but you are monitoring your recording and not your pre. It only makes sence to connect to the recorder.

Matt

I am feeding the JB3 an optical signal so there should be no difference correct?

-Kevin