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Videodrome
Joined: 22 Feb 2023
Posts: 56
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| Posted: Mon Apr 08, 2024 8:24 am Post subject: Hushbox for Sony D50.Permanently removing the cover is safe? |
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After my cooling mod I'm still looking to quiet things down and make a hushbox.
I'm wondering if removing the cover would introduce any long term risk?
There would be sufficient cooling, I'm more worried about static electricity or something?
3D sketch:
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Zebra
Joined: 02 Jul 2020
Posts: 93
Location: NJ USA
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| Posted: Mon Apr 22, 2024 7:08 pm Post subject: |
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Maybe look into why yours is so loud first. My one is super quiet compared to my digital projectors.
It was noisy when I first got it because one of the fan covers was bent and was catching the fan blade. Once I fixed the fan cover and put the projector on a solid platform (i.e. one that doesn't vibrate much) it is inaudible over movie and game noise.
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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: Mon Apr 22, 2024 10:53 pm Post subject: |
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You should be fine. Some amps, etc use the cover to direct the fan air to areas needed, but that's not really the case with the D50. If anything, taking the cover off will cool things even more.
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Videodrome
Joined: 22 Feb 2023
Posts: 56
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| Posted: Sat Jun 15, 2024 5:49 am Post subject: |
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Thanks.
I've managed to put the thing together and it works perfectly.
The only thing I'm hearing is the 200mm ductfan a few meters away, all sound from the projector itself is gone.
Not even hearing the 'click' when you turn it on/off.
My led lights make a small dip so that's how I know it turned on. 
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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Videodrome
Joined: 22 Feb 2023
Posts: 56
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| Posted: Sat Jun 15, 2024 6:55 pm Post subject: |
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Don't worry. 
The 200mm fan is still in place.
I replace the custom duct with a hushbox.
Played a few hours of gta5 without a hitch.
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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| Posted: Sun Jun 16, 2024 2:01 pm Post subject: |
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So there's a fan at the end of the tin duct sucking air out of the hushbox? That can even run the projector even cooler than not using a hushbox. That's what I found with my setup that I linked to above. It runs cooler because I was sucking air out from near the ceiling behind the projector and moving it to a different room. Normally the heat from an expelled projector stays up near the ceiling heating up the room from the top down and ends up recirculating back into the projector. This is all normal of course but getting the heat out of the room helps even more.
Did you take any before and after temp readings inside the projector?
You won't see issues immediately if things run hotter than normal unless it's absolutely catastrophic. Increasing the projector internal temp will just shorten the life of the projector electronic components but everything will run fine. For example, e-caps will dry out faster and you'll start to see drifting sooner down the road than if it was better cooled.
Kal
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My basement/HT/bar/brewery build 2.0
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Videodrome
Joined: 22 Feb 2023
Posts: 56
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| Posted: Sun Jun 16, 2024 3:24 pm Post subject: |
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Yeah, there is 200mm duct-fan at the other end which is more than adequate.
Added some ducts inside to guide most air through the projector.
I should put temperature sensors in it, was planning on it, but got too excited when it was finished.
Luckily I do have 'before' temps to compare it with.
This is first of several D50's I have and I didn't go easy on this one.
I forgot to turn on the fans twice in the past 18 months, so after 30 minutes it suddenly shut off.
"Oh sh*t....", especially the first time thinking I ruined it.
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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garyfritz
Joined: 08 Apr 2006
Posts: 12088
Location: Fort Collins, CO
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| Posted: Tue Jun 18, 2024 3:39 pm Post subject: |
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| kal wrote: | | It runs cooler because I was sucking air out from near the ceiling behind the projector and moving it to a different room. |
That's what I did too. When I had my first "movie party" (20-ish years ago...) we had my family of 4 and another family of 5. Between the XG852 and 9 bodies in my small room, it got pretty toasty up on the ceiling. At some point the XG blew chow and shut down. I freaked, thinking I'd killed it. Thankfully it just needed to cool down. I then ran an exhaust from the ceiling to another room and never had a problem again.
I'm embarrassed by what a ghetto solution I built, and still use. I added the exhaust fan after I built the HT, so it wasn't really possible to use proper rigid ducting. I snaked flexible exhaust hose through the ceiling/wall, which of course added a lot of resistance to the airflow and produced more air-turbulence noise than necessary. I hooked it up to a small cast-off vacuum cleaner with a variable-speed control. It works, but it ain't pretty.
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