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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Wed Nov 04, 2009 7:12 pm Post subject: ampro 3600....I don't get the negativity... |
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I just aquired one of these projectors...and if it had a better green tube, I am quite certain that it would be a better projector than a Marquee. For one, the sharpness is absolutely better than a Marquee, and the colors are too. Add to that the ability to fine tune geometry to perfection...and I don't get why this projector is frowned upon. Does it fail a lot?
Can someone tell me what tubes are in it?
Also, this one has colored glycol...is that normal for a 3600?
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Robert A. Hill
Joined: 19 May 2006
Posts: 182
Location: Simpsonville, SC
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| Posted: Wed Nov 04, 2009 7:52 pm Post subject: |
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(Not so loud, the prices will stop dropping as fast) These things are pieces of crap and everyone who has never owned one knows it! Pete has just tried to switch one on and failed 
Colored glycol is not from factory, but helps the colors a lot. I think tubes are MEC 180DVB. I wish I could see one with P16 tubes!
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Wed Nov 04, 2009 7:53 pm Post subject: |
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Like I said I always wanted an Ampro but fell into a Marquee. I think they do not have corner focus adjustments( Scheimflug)? not 100% on this, but you have to set it up so as not to need scheimflug . then you will get good corner focus.
In the past they said the HVPS failed a lot but the marquee has the same companies supply, keep it cool and it wont die is what i remember form my research on CRT's when I was first getting into them.
Athanasios
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Wed Nov 04, 2009 7:58 pm Post subject: |
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I'm pretty sure it has corner focus adjustment...I didn't do it yet, but I think I read that it's there in the manual.
I think a fresh green tube and no colored glycol, but HD144's...could make this thing a great pj.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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benareeno
Joined: 22 Mar 2006
Posts: 1614
Location: ottawa, canada
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| Posted: Wed Nov 04, 2009 8:05 pm Post subject: |
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I know...Sheimflug is there, I think.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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dturco
Joined: 06 Feb 2009
Posts: 3778
Location: Eastern Shore Maryland
TV/Projector: Runco DLP VX-3000i Marquee 9500 parts doner
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| Posted: Wed Nov 04, 2009 8:07 pm Post subject: |
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TSE has a 3600. Maybe he'll chime in.
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CRT_Ben
Joined: 28 Aug 2006
Posts: 1684
Location: Northern Virginia
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| Posted: Wed Nov 04, 2009 8:11 pm Post subject: |
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| benareeno wrote: | | I know...Sheimflug is there, I think. |
It's there but the implementation cut some corners. Instead of moving the C-element together with the lens, the Ampro moves only the lens and leaves the C-element stationary. I believe that this leads to less than optimal corner/edge focusing if much lens flapping is dialed in.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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| Posted: Wed Nov 04, 2009 8:19 pm Post subject: |
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| CRT_Ben wrote: | | benareeno wrote: | | I know...Sheimflug is there, I think. |
It's there but the implementation cut some corners. Instead of moving the C-element together with the lens, the Ampro moves only the lens and leaves the C-element stationary. I believe that this leads to less than optimal corner/edge focusing if much lens flapping is dialed in. |
I knew it was something like that. thanks ben.
Athanasios
_________________
Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
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Tom.W
Joined: 09 Mar 2006
Posts: 6635
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| Posted: Wed Nov 04, 2009 8:26 pm Post subject: |
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And I thought Chip was the only guy with a working AmPro.
Go figure ........ 
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Wed Nov 04, 2009 8:59 pm Post subject: |
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Nah, I have a bunch too.
I've always said that the Ampro colors rivalled the NEC XGs, my all time favorite. BArcos and Marquees are flat compared to an Ampro, I don't care what you say.
The Scheimpflug is similar to the Marquee 8500s, but the Ampro lacks astig control, so I guess the 3600 is more like a late model 8000, but with better colors.
I've seen plenty Ampros run to the point where the tubes are toast, so their lack of reliability is far overblown.
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Mark_A_W
Joined: 15 Mar 2006
Posts: 3068
Location: Sunny Melbourne Australia
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| Posted: Wed Nov 04, 2009 9:09 pm Post subject: |
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| CRT_Ben wrote: | | benareeno wrote: | | I know...Sheimflug is there, I think. |
It's there but the implementation cut some corners. Instead of moving the C-element together with the lens, the Ampro moves only the lens and leaves the C-element stationary. I believe that this leads to less than optimal corner/edge focusing if much lens flapping is dialed in. |
That is true for the 9" Ampros.
This is an 8" AC Ampro.
(Not that I have ever seen one..)
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CRT_Ben
Joined: 28 Aug 2006
Posts: 1684
Location: Northern Virginia
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| Posted: Wed Nov 04, 2009 9:22 pm Post subject: |
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| Mark_A_W wrote: |
That is true for the 9" Ampros.
This is an 8" AC Ampro.
(Not that I have ever seen one..) |
Right you are sir. Not sure how that didn't register when I was replying, but yes what I posted is only true for 9"LC ampros (as should be obvious by the C-element reference).
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Wed Nov 04, 2009 9:46 pm Post subject: |
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Yea but we know someone with Ampro 8" tubes w/LC housings and 117-24 lenses......
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Wed Nov 04, 2009 10:40 pm Post subject: |
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The 4600 is about on par with a Barco 1209 that also had no Scheimpflug adjustments..
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AnalogRocks
Forum Moderator
Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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| Posted: Thu Nov 05, 2009 12:52 am Post subject: |
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You mean an Ampro is supposed to run? 
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tse
Joined: 03 May 2006
Posts: 1014
Location: Sweatbucket, Fl.
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| Posted: Thu Nov 05, 2009 1:44 am Post subject: |
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There are air coupled Ampros and liquid coupled Ampros. The Scheimpflug system for AC units is as good as anyones. It can produce perfect scheimpflug adjustments. Ampro was a privately owned company (a small group) and didn't have or want to put the money into a flexable, liquid tight lens/"C" element system like in the Marquee. The C element is fixed relative to the phosphor plane of the tube, the lens moves for the Scheimpflug adjustments. Ok, what this means is the focus is not as good as it could be at the top of the picture when projector is table mounted. Back in the day the projectors were used for displaying computer/graphic images so that showed up when compairing different brand projectors. Very hard to see when displaying video, though. If the projector is ceiling mounted the less than optimum focus area is at the bottom of the screen and is in an area that is less important. There is a fault that can be picked at but in home theater applications it doesn't make that much difference.
Scott
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CRT_Ben
Joined: 28 Aug 2006
Posts: 1684
Location: Northern Virginia
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| Posted: Thu Nov 05, 2009 2:21 am Post subject: |
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| tse wrote: | There are air coupled Ampros and liquid coupled Ampros. The Scheimpflug system for AC units is as good as anyones. It can produce perfect scheimpflug adjustments. Ampro was a privately owned company (a small group) and didn't have or want to put the money into a flexable, liquid tight lens/"C" element system like in the Marquee. The C element is fixed relative to the phosphor plane of the tube, the lens moves for the Scheimpflug adjustments. Ok, what this means is the focus is not as good as it could be at the top of the picture when projector is table mounted. Back in the day the projectors were used for displaying computer/graphic images so that showed up when compairing different brand projectors. Very hard to see when displaying video, though. If the projector is ceiling mounted the less than optimum focus area is at the bottom of the screen and is in an area that is less important. There is a fault that can be picked at but in home theater applications it doesn't make that much difference.
Scott |
Thanks for the explanation, Scott, and clearing up the air coupled adjustment capability. I do think it's an overblown problem with the LC units - how often is the edge or the corner of the picture even in focus in the source material?? Probably not very often. Ironic though, that the original purpose (graphics) would have exposed the flaw much more than our purposes (video).
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Thu Nov 05, 2009 4:06 am Post subject: |
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I have a 3600HD set up in my shop that has smokin hot focus and color. I've had Heywood Jablome over to confirm that it was in fact resolving 1080P, much to our surprise.
The 2000/4000 series AmPros are where the problems are. The X600's are just fine.
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Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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