Last Saturday I was in Northwest OH, set up on a wagon in the middle of a street. It was 90 plus degrees in the sun, which was where I was, singing and auctioning when all of a sudden, silence. Had power to the unit, but silence. Had someone get my backup PAS out of my trailer and set it up for me while I continued to auction "barefoot". Thank God I had bought my second unit, just in case. I had 3 more concerts to do the rest of the weekend, and couldn't be without my PAS. Finally got back home and this A.M. set it back up, checked the fuse, good, so turned it on and WHEEEE, it works.

Now what can I do to not have that happen again. I'm presuming it was an overheat problem. The heat build up inside the case had to be tremendous. There isn't any venting that I can see, and def. not fans. Seems that this could be something that might be addressed. But I need some sort of a preventative measure. Ice water isn't it tho!!!!, unless it's for me to prevent a melt down from panic. Like I said, Thank God I had a backup.
Original Post
quote:
Originally posted by Singing Auctioneer:
Last Saturday I was in Northwest OH, set up on a wagon in the middle of a street. It was 90 plus degrees in the sun, which was where I was, singing and auctioning when all of a sudden, silence. Had power to the unit, but silence. Had someone get my backup PAS out of my trailer and set it up for me while I continued to auction "barefoot". Thank God I had bought my second unit, just in case. I had 3 more concerts to do the rest of the weekend, and couldn't be without my PAS. Finally got back home and this A.M. set it back up, checked the fuse, good, so turned it on and WHEEEE, it works.

Now what can I do to not have that happen again. I'm presuming it was an overheat problem. The heat build up inside the case had to be tremendous. There isn't any venting that I can see, and def. not fans. Seems that this could be something that might be addressed. But I need some sort of a preventative measure. Ice water isn't it tho!!!!, unless it's for me to prevent a melt down from panic. Like I said, Thank God I had a backup.


I've had a few "sunny" gigs that made me wonder how much heat the PAS can handle? Never failed on me but I've learned to be aware fo things like that.

Black probably isn't the best color for those situations but I suppose a space blanket could help keep the power stand at a more comfortable temperature. Or, paint it white?

The pole should be okay but I do worry about the base in direct sun.
I think the vents are on the front side of the mixer section, when you open the cover to the mixer they are to the left and right of that latch facing the inputs... I think... vertical strips that allow airflow, albeit not much. I keep a fan with me for outdoor gigs and have placed it on the base unit to help with airflow when I think she needs it more than me, which is not often. I'm not too sure it was heat buildup though... if so, your second one would have reacted similarly. It could have been a power surge??? not sure how the PAS handles this but my old system would barf every now and then on power spikes/surges... I'd have to reset it and it'd be fine. Another thought, you didn't get moisture of any sort in it did you? No sense crying over spilled milk but spilled beer into a PAS is another thing. Glad you had a backup though. Can you imagine how long it would have taken you to setup a backup conventional PA? Hope you figure it out and let us know. I don't have a backup PAS and if I did I'm probably too lazy to carry it with me and I have several outdoor gigs coming up and it's hotter than a rat in a wool sock down here in the south right now.
Interesting thread! No idea about why the PAS shut down on you, but I'll watch for a Bose response.
Anyway, I thought you'd like to know that there are actually four nice little fans built into the system inside the case. I had my PAS apart this weekend (to fix the loose bolt that holds the treadle in) and saw them. Also, there are little holes on the bottom of the unit which probably allow a little airflow, as well as those near the control panel.
Just my 0.02.
Best regards,
The Jester
Does this mean that we shouldn't unzip the cover and leave the base in it? I picked up that tip from someone on this board, and have been operating that way since without problem. It would seem with those vents and fans, going my lazy way might not be a good idea.
Respect,
Col. Andy
Mine has worked well in 115 degree heat, with no loss in output.......unlike my previous PA's. In the shade of course.

I'd suggest keeping the base out of direct sunlight on hotter days. Here in the desert we use the reflective windshield screens from our cars for temporary shade when needed. They're only $5 or so.
I don't know about you guys but I almost always have extra things at my gigs that I don't use. Patch cords, extra mics, effects or small mixer, etc. I find that the PS1 cover provides a convenient place to store those items, as well as my B1 and L1 covers, and anything else I don't want laying around or possibly dissappear while I'm playing. I use the standard cover, so it dissappears nicely on the stage, greatly reducing clutter, and I don't have to wonder about leaving it on, or taking it off.

Oldghm
Like Oldghm, I take my PAS out of the cover and store the B1 covers, L1 covers and other assorted goodies (like my cell phone and keys) in it during the gig. I also use the black standard PS1 cover as it nicely disappears into the background, making the stage that much more uncluttered looking.
The PS1 does have fans, but they are only kicking in when you work the system pretty hard. The power amps are very efficient, and a nice side effect of high efficiency, is that there is a lot less heat to get rid off. So unless you are hitting it very hard, the fans will be off and at that kind of volume level, the fans are pretty much inaudible.

Leaving the system inside the bag is perfectly fine. The vents are above the mixer section and if the bag is open enough so you an insert any cables, than its also open enough to get appropriate ventilation.

If possible you should avoid exposing the PS1 (or any kind of electronics for that matter) to direct blazing sunlight. That can generate enormous amounts of heat inside the system to the point where it actually has to shut down (to protect some of the internal components). As a general rule, if it's too hot for you as the performer, than it's probably also too hot for the system. Finding a little shade will certainly help in a scenario like this.

Hope that helps

Hilmar
A couple comments in addition to Hilmar's:

To prevent overheating, the first thing is to be sure that the vents that Owen and The Jester mention are completely unobstructed. They are above the control panel, so I wouldn't toss any stuff back there that would block the vents.

The PS-1 definitely has fans in it, and they can move quite a bit of air when the music gets loud, as long as the vents are clear.

The outside temperature, the direct sun, and the level of sound through the amps all contribute to heating them up. So keep the unit in the shade if possible (I know, if you could be performing in the shade instead of standing in the hot sun, I'm sure you would, but I mention it just in case), turn down a couple dB if it is extremely hot and you are worried - lowering the volume just a little can make a huge difference in heat production at high power.

Lastly, I suppose that a good, centralized location for the cooler with iced drinks in it is next to the PS-1 Cool
Of course you could get a 300 pound block of ice from your local ice factory for about $30, let you r fan blow over that and whalah !! Instant AC !!

They make good seats on a hot day too !!

Also, if you're laying the unit on asphalt, cement , or another HOT surface, placing the PS1 on a piece of cardboard or other insulator first should greatly reduce the amount of heat coming into the unit from below.

You could also get a 10 pound block of dry ice for about 10 bucks, ( and some gloves !! ) and apply to hot units as needed !! Careful, don't freeze the PS1 !!

(:^)

Add Reply

Likes (0)
Post
Having trouble signing in?

We recently updated our sign-in procedure and if you have old sign-in data cached, this can create a problem. Please:

  1. Clear your browser cache and cookies
  2. Then close the browser (not just the window)
  3. Open the browser and try again
Thank you

Please make sure that your profile is up to date
×
×
×
×