Outdoor setup problem...

[imix500]

Heh, sorry for the multiple posts. On second look thier power recitfier/cap board would not be the best choice. It is right on the edge of what the amp needs. (it's caps are rated for 50v, they will need to be at least 63v caps for that amp)

 

[Zac_cutt]

Hmm lemme look in this catelouge for a power supply and a transformer.

Edit:
Found this, could it be better? Price is really low though..

http://www.digikey.com/scripts/DkSearch/dksus.dll?Filter

Zac

 

[Zac_cutt]

The only thing I could find for digikey is this:
http://www.digikey.com/scripts/DkSearch/dksus.dll?Criteria?Ref=10884&Site=US&Cat=33292844

But none of those are above 24V...

Zac

 

[imix500]

Hi Zac, only the second link worked. The power supplies you were looking at are actually used for industrial control, probably wouldn't work to well (also why none were above 24v).
You can go in the direction of buying a prebuilt power supply, but it will be expensive. You are in need of a supply that can provide +50 and -50 at around 2A. It would be much cheaper to buy the components and build it yourself.

 

[Zac_cutt]

Do you have a schematic for a 63v or above supply?

Zac

P.S. What would the approx. price be of a home built supply?

 

[Zac_cutt]

What about (back with the first kit supplier...) the AMP 1 on www.41hz.com using the AMP 1 PSU plans posted on there?

Are there printed circuit boards available for this type of PSU?

Thanks,
Zac

 

[Burnedfingers]

Son,

This is my last attempt to try to help. I'm gone after this post.

Ebay has a small Toa for auction. Its a 10 watt unit capable of doing the job you have in mind. Its ebay number is 7417854881 and its a BG 10. The starting price with no reserve is .99 I believe.
There is 15 hours left on the auction. I highly suggest that you listen to logic and reason and purchase this amplifier.

If their enclosure is too small tell them that adjustments will have to be made as this is what is necessary in order to do the job.

While not a perfect setup it will be able to use the audio from the headphone piece provided that it is close by. By close I'm talking a distance of 25' or so. If a longer run is needed a DA certainly would be in order. As mentioned a pad should be built to correct the impedance mismatch.

I can realize that you have a zest for exploring the unknown here and the desire to build something. I hope that you can understand where I am coming from. I also hope that a lesson will be learned in the future and that being to consult with those having the necessary experience and knowledge to provide information and possibly listening to the information before offering services without knowing the full costs involved. It unfortunately cost money to set up anything to do with sound.
The gereral public thinks that anything can be thrown together and it will magically work. There are times when you have to stand your ground and stand toe to toe with someone and let them know what is needed. Your space confines are totally unrealistic to say the least. They WILL amend this when they are enlightened by you telling them a bigger enclosure is needed.

I'm done...do what you want.

 

[Zac_cutt]

10 watts???

The lowest wattage outdoor speaker I have found is 35?

I know your frustration, "I am not trying to do that but I have t5o try to fit this to the customers specifications as best I can.

I am still considering that amp. Would it be able to run 2-4 35-40wat speakers?

Thanks,

Zac

P.S. I am not trying to explore, I will do that with my own audio...

Edit:

It also says "Sold As Is!"

 

[imix500]

Hi Zac, yes 10 watts would be able to run 3 70v speakers, but you would get ~ 96dB MAXIMUM out of them at clipping. The amp would run very hot under normal levels for outside. Still looking around for amps...

 

[Zac_cutt]

Check out this:

http://cgi.ebay.ca/Great-Bose-Roomm...734512803QQcategoryZ14995QQrdZ1QQcmdZViewItem

And

http://cgi.ebay.ca/BOSE-ROOMMATE-RO...733628123QQcategoryZ14995QQrdZ1QQcmdZViewItem

I called Bose and the guy said hes never heard of them... I am thinking they are foreign like maybe UK or something?

I would be willing to ship in...

If anyone finds anymore info it would be great.

Zac

 

[imix500]

Those are Bose 101 speakers, probably modified by bose to be self powered. They would be part of the commercial side of Bose and it's very possible the guy you talked to was on the residential side of the company. They were extremely popular for commercial installs in theme parks and the like for many years.
Certainly another contender for speakers although the connections used would not hold up or be safe for outdoor use in the rain.

 

[Zac_cutt]

That would be fine, they are rated for outdoor use, and you can see in the one pic it has a standard 120V plug so they look great to me, I can make a nice aluminum cover for the contacts...

Now to find a dealer.

Zac

 

[imix500]

Well that's the thing, I don't think they make them anymore. Any you find will be used. You may have a look around the bose commercial site and see if they are listed somwhere. Btw, here is a generic schematic for a bipolar power supply.

 

[Zac_cutt]

Well after months of looking and searching I did find out the Bose are no longer made.

I had a real hard time with this problem. I was almost ready to buy a few small car audio amps and transformers, but then I found these.

http://www.specotech.com/cart/products/productDetails.asp?prodID=673

Now, I will reveiw my problem.

I have to do an outdoor setup. EVERYTHING has to be outside, including whatever powers the speakers. The ideal situation is to find powered outdoor speakers. However, speakers like this are not made anymore, or atleasty we thought.

Then I found the ones at the link above. In the information page it says "6.5" All Weather Design Speakers with Transformer"

If it says "with Transformer" then wouldn't that mean it IS powered? They can't sell something with a powersupply but nothing for the power supply to be used for?

I will call them tommorow and double check. Any thoughts on these speakers?

Thanks,
Zac

 

[imix500]

Hi Zac, those speakers include a transformer for 70v operation- they are not powered. They would be fine, but you'd need a 70v amp.

 

[Zac_cutt]

Ugh... Any suggestions?

Zac

 

[imix500]

Considering your budget, your best choice would be buying all weather speakers and a small amp to go in an enclosure. All of the speakers previously mentioned would be a good choice.
Many manufacturers will sell modified versions of thier self-powered speakers for outdoor use but it costs $$$$.
Because this is for a city govt, does everything have to be new?

 

[Zac_cutt]

No, not new, but I may have to do more of these in the future so buying used equiptment isnt a great option... It would be hard to have the same consistent used equiptment if you know what I mean?

In other words, using different equiptment each time might look bad on me.

However my budget is now able to be flexible probably up to 5-600$ max. Although cheaper is better.

I would love to get my hands on a bulk deal of those Bose 151.

Zac

 

[imix500]

The bose 151's will do great, and they are still widely available. They have a newer version with three drivers instead of one as well. They are basically disposable speakers though, so don't expect them to survive more than a year of climate changes. The good news is that you can just throw a new driver in and your good for another year. The car amp is not a bad idea. The newer class d amps run pretty cool and sound ok for non critical applications. The catch with using car amps is you need a good, clean 12 - 13.5v power supply.

 

[Zac_cutt]

The new 151s are not powered it was only the older model 151s I would ahve to buy used 151s to get powered... If I could find a large lot of them I would... But IDK.

Zac