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[Danoplex II]

Well, I finally got logged into this thing!  I wanted to post a photo of my screen (The Danoplex II). 

My screen is a 6' 8" x 14' 8" custom canvas.  It has a black webbing around the outer edge to give rigidity for the grommets.  I had it made for around $110.00 including shipping from a place in Evansville, Indiana that makes circus tents, awnings and fabric structures.  You can google them...Anchor Industries.  My frame is a 1" PVC frame and the screen is held onto the frame with 10" bungees.  I will be upgrading the frame here shortly with 1.5" aluminum and heavy duty speaker/light stands.

My sound is pretty awesome.  I spent WAY too much but was getting all my equipment at cost so what the heck huh?  I actually run 5.1 surround sound in the yard.  Lots of pros told me it was a waste of time but my people that have seen Star Wars - Revenge of the Sith feel differently.  Terminator 3 this weekend!  I am using 2 JBL JRX115 15" professional sound reinforcement speakers for Front R&L,  2 JBL JRX112M 12" professional monitors for my R&L rear surrounds, 1 JBL EON 1500 15" professional for my center, one JRX118PS 18" 500 watt professional powered subwoofer next to my center.  Each speaker has a dedicated Crown XLS402 800 watt bridged amp for a total of 5 amps.  I am using a Yamaha MG-12/4 mixing board to mix my surround sound.  I have to tell you that it sounds absolutely awesome! 

My projector is a Hitachi LCD 2000 Lumens.  Not sure of the model number, maybe a CP-X250.  Just using a Sony DVD player running Component to the projector.

I sit a microwave in the front with microwave popcorn for the folks to eat.  It is always so much fun.  Takes me a few hours to set up and tear down but I have fun. 

[Pass_The_Off]

Nice job!

I agree that 5.1 sound is so sweet.

[Danoplex II]

Changed the PVC to aluminum using speaker stands and O-Clamps to hold them.  Looks more professional and is a LOT sturdier.

Dano

[mdrsteve]

Looks good, but is it sturdy enough with just the two speaker stands as your base?  Do you use sandbags?

[movieman]

I have a set up using speaker stands like this, except my top bar was made as a light truss. I use 4 guides ropes (2 from each side)  I find it to be very stable and does a great job. The screen surface is from Sima and can do both front and rear projection. I love it.  Good luck with yours..    rg

[Danoplex II]

Hey Movieman,  Tell me more about the Sima screen?  I would like to get one a bit smaller for smaller events.  Approximate cost?  I do like the rear projection advantage too.  Would love to be able to have that option.

MdrSteve,  Like Movieman said, he uses guy wires and my plan is to use them in a "V" from the screen to pull the top taught and straighten the center some (it has a small sag).  The actual frame is VERY sturdy.  Obviously, it is just a big sail though and I really don;t think sand bags would help much at the top, hence the guy wires (rope).

Dano

[movieman]

I had a single pipe on the top andI also had a small sag. The light truss bar comes in 5' sections and will correct this problem.  I use bungie cords on the top and velcro on the sides and bottom so I can get just the right tension. I found using bungie cords on all four sides it can pull the screen to tight. Using velcro I can control the pull. The screen is a gem. I love the surface and the option of front/rear projection. I bought just the screen surface for this lay out. I did not by the entire unit. I did buy there speaker system which is very nice. I use this lay out at other location and on the front lawn for the kids x-box games. At times when they double team it we connect two x-box units (8 players/ 2 teams) using the screen on the front lawn and the perm. screen in the back yard.    rg    www.skyvueoutdoortheatre.com

[TopherM]

I am using 2 JBL JRX115 15" professional sound reinforcement speakers for Front R&L,  2 JBL JRX112M 12" professional monitors for my R&L rear surrounds, 1 JBL EON 1500 15" professional for my center, one JRX118PS 18" 500 watt professional powered subwoofer next to my center.  Each speaker has a dedicated Crown XLS402 800 watt bridged amp for a total of 5 amps.  I am using a Yamaha MG-12/4 mixing board to mix my surround sound.  I have to tell you that it sounds absolutely awesome! 

I have a question about your sound setup!

First, how are you getting surround sound effects out of PA speakers?? I have asked many forums about a THX or Dolby processor for a PA system, and everyone has told me that no such animal exists. Are you really just running a stereo signal through 5 speakers??

Next, how are you running 800 watt amps through speakers designed to handle 250 watts (JRX115 and JRX112) and 225 watts (EON 1500)? I see that each am is a 300 watt/channel stereo amp into 8ohms so you are really unneccesarily overdriving the speakers if you are bridging the amp for 800 watts for each channel!! You could have just 3 amps (300 watts/channel stereo for the front, one for the back, and one side of one for the center). You are doing SERIOUS damage to these speakers if you are feeding them 800 watts each!!

[Danoplex II]

TopherM,

Interesting questions.  I will start with the easy stuff first.  I am truly running 5/1 surround through my PA system and no, I am not just running stereo into 5 speaekrs.  My DVD played give me 6 RCA type jacks on the back.  Right Front, Left Front, Center Front, Right Rear, Left Rear and Subwoofer.  My mixer that I am using (Yamaha MG-12/4) allows me the ability to run front Right and Left on the regular Stereo Out R & L.  I then take my Rear R & L into the mixer and assign them to Group 1 & 2.  Giving me a R & L output different from the regular stereo bus.  I take my Center Channel sound and run it into a channel input, selet it to be on the Aux 1 bus and run the output of the Aux 1 bus to another amp.  Yes, 5 amps and 5 discrete totally different channels.  The Subwoofer I just pick up from the R & L bus because it is defined in my DVD setup as not having a subwoofer which routs low frequency information to the R & L channel.

Yes my JBL JRX-100 series and EON speakers are rated for 250 Watts RMS and 225 Watts RMS respecively.  They are also rated for 500 watts program power with a instantanious peak wattage at 1000 Watts and 900 Watts.  Program power is also referred to as "contineous IEC power rating."  JBL reccommends that your amplifier be able to produce at least twice the rated program power rating to their speakers.  It also mentions that this is called "headroom" of the amplifier.  You can read about this here: http://www.jblpro.com/pages/general_faq.htm  Yes, if I were to crank my amps up to the maximum power output I could and most certainally damage them.  I do bridge my amps at 800 Watts and have rarely turned them up past 1/2 of the way simply because it is too loud.  It is clear though.  I can assure you that I have not damaged my speakers.  In the same JBL article from above there is another section on the dangers of low power I would encourage you to read.   If I were to use the amps in stereo mode as you suggest I risk greater potential of damage to my speakers than having the available headroom for them.

I hope this puts you at ease.

Thanks, Dano

[Danoplex II]

Just thought I would post the Danoplex II new photos....

[BigScreenThrills]

Holy amp stack, Batman!  Very nice!

That has GOT to sound incredible.

[Backyard Paradise]

We’re not worthy!  You really are a pro Dano. Do you always project towards the house or do you go both ways? 
Kevin

[Danoplex II]

BigScreenThrills,

It sounds awesome.  I wish everyone could come hear it.  The 5.1 really shines in this configuration.  Of course I have no money to eat anymore but hey, I needed to lose weight anyway!

BackyardParadise,

I have always projected towards the house as the main power is located on the left corner of my deck.  I have been considering projecting the other way to have the sound come at my house to alleviate some of the complaining from the people who always call the police.  But to answer your question......I don't go both ways....lol

Dano

[BigScreenThrills]

Eating is overrated.  And, as I've discovered lately, so is sleep.

I don't go both ways either.  I do prefer the view from the front, but I always end up coming at it from the rear.

[Danoplex II]

I don't go both ways either.  I do prefer the view from the front, but I always end up coming at it from the rear.

WOW.....this is wrong in SO many ways.....lol

Dano