Pulsar makes bad noise when starting up

cleanbluesky · Post by **cleanbluesky** » Sat Oct 30, 2004 3:49 pm

When I press the start button on my computer, I can hear an 'electrical pulse' type noise coming through the speakers from the Pulsar. Is this normal or am I doing something wrong? Just a small sounds but it seems that the Pulsar outs are giving off current?
Do other people find this also?
Should this be something I look into?

blazesboylan · Post by **blazesboylan** » Sat Oct 30, 2004 3:55 pm

It's always a good idea to turn speakers on last in every signal chain. Just about every audio device creates a surge during power-up and power-down, and computer power supplies can be quite bad at this. Amplifiers too -- many of them have overload protection circuits that kick in on startup and shutdown to protect your speakers from the surge.

Anyway if it's just at startup and shutdown, I personally wouldn't worry about it -- except that I would turn the amp / speakers off!

Cheers,

Johann

astroman · Post by **astroman** » Sat Oct 30, 2004 4:49 pm

it's absolutely regular and even mentioned in the manual.
During initialization the card is in an undefined state, but the audio output stages are already active - and transmit all the garbage found in the buffers...

cheers, tom

at0m · Post by **at0m** » Sat Oct 30, 2004 5:31 pm

I have the same on project (read: hardware io) loading and removing, but I found out some people don't turn down the amp at all and don't get these pops when switching projects. Wonder why that is...

MikeRaphone · Post by **MikeRaphone** » Sun Oct 31, 2004 9:41 am

What i would like to know is whether this plops can damage the monitors? They are not loud but sure sound unhealthy to my taste.
For me they occur every time i load a different project...

at0m · Post by **at0m** » Sun Oct 31, 2004 2:19 pm

I think these pops can blow up your tweeters. They are short bursts of quite high power.

Hey, I installed b0rg's magma and p1 on this laptop and it doesn't crackle at all when I load the project, or load the Analog Dest. On my Scope system I get a big pop. Still trying to find out why some systems do and some do not pop.

symbiote · Post by **symbiote** » Mon Nov 01, 2004 12:29 am

I don't get the pops at all on analog outs, neither on the Scope nor Luna2, even when deleting/reloading Analog Dests. I used to get crackles when I used ADAT, but not the sort of thing that would blow a tweeter.

blazesboylan · Post by **blazesboylan** » Mon Nov 01, 2004 2:23 pm

The worst I've heard is adjusting the Z-Link cable in its slot... with headphones on... The headphones were fine, but my ears are still ringing to this day.

Pops and crackles are never a good idea for speakers. Turn their volume down before changing projects, just to make 'em last a little longer.

Post by **hubird** » Mon Nov 01, 2004 5:54 pm

it's an automatic habit by me to turn the master volume of my little mackie mixer down to a very low level

However the startup clicks seem to be cut off somehow, they are very short and are never extremely loud

Wasn't there a line about this click protection in the manual?
I could be completely wrong, may be it was my former RME card...

<font size=-1>[ This Message was edited by: hubird on 2004-11-01 17:55 ]</font>