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Old 29th October 2011, 05:54 AM   #111
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Ah, so it is, thanks.

Two out of three ain't bad; what's the height?

Is there a minimum space between adjacent boards and the amp modules and the PS?

Trying to figure out what size case is needed.
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Old 29th October 2011, 09:49 AM   #112
Cyan is offline Cyan  Italy
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Quote:
Originally Posted by noah katz View Post
Ah, so it is, thanks.

Two out of three ain't bad; what's the height?

Is there a minimum space between adjacent boards and the amp modules and the PS?

Trying to figure out what size case is needed.

I'm interested too, there are 2 cases found on ebay for power amp. One is large about 185mm, and it is large enough, but too large for the space I have. I can only use the 165mm one, and dunno if that is big enough.
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Old 29th October 2011, 02:28 PM   #113
ljm_ljm is offline ljm_ljm  China
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Quote:
Originally Posted by noah katz View Post
ljm_ljm,

With the heat sink vertical on the board it doesn't look like convective airflow over the fins will be very good, since the board underneath blocks it.

Do you know what is the maximum average power that a module can dissipate when in a closed box?

And how much if the box has ventilation holes above the heat sink?

Also , what are the dimensions of the board? I searched but didn't find them, and the ebay vendors don't give them either.

Thanks

I send connection diagram in front have a mark on size.
The radiator height about 40 MM. Plus installation about 5 MM copper column。

L15D can use 30 MM height of the radiator. If be necessary, can indicate
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File Type: jpg L20D带保护连接图..jpg (183.2 KB, 968 views)
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Old 29th October 2011, 08:16 PM   #114
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Quote:
Originally Posted by ljm_ljm View Post
The radiator height about 40 MM. Plus installation about 5 MM copper column。
Thanks!

Cyan,

I've been searching for cases too, here are some other sources:

Audio Catalog

thlaudio web site pages

eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices

Hi-Fi 2000 contenitori per l'elettronica, case modding HTPC, Galaxy, rack, DIYaudio, computer cases, front panel express, knobs,milled Handles, milled fronts, hi-end,

modushop.biz

Par-Metal
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Old 29th October 2011, 10:50 PM   #115
Cyan is offline Cyan  Italy
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Nice thank you
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Old 31st October 2011, 02:23 AM   #116
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Quote:
Originally Posted by ljm_ljm View Post
General protector
This and all of the other speaker protector boards on ebay say that they require AC.

I expect they work with DC also, but is there any issue with doing that?

The SMPS I will use has only 12 VDC auxiliary voltage.
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Old 2nd November 2011, 03:07 PM   #117
ljm_ljm is offline ljm_ljm  China
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Quote:
Originally Posted by noah katz View Post
This and all of the other speaker protector boards on ebay say that they require AC.

I expect they work with DC also, but is there any issue with doing that?

The SMPS I will use has only 12 VDC auxiliary voltage.

No problem, but need to make some changes.

Will the DC12V + and-in the direct connection LM7812 can work OUT GND.
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Old 2nd November 2011, 10:16 PM   #118
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Will the DC12V + and-in the direct connection LM7812 can work OUT GND.
Sorry, I don't understand.

But if it helps, the PS has both + and - 12V outputs.
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Old 3rd November 2011, 02:08 AM   #119
MrSlim is offline MrSlim  Canada
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If you are talking about this one: http://www.ebay.com/itm/110620807058...84.m1438.l2649, you could remove the 7812 regulator, and run the +12 directly in to the printed circuit hole where it's output pin was. and the ground from the power supply would go on the regular ground point.. It would probably be a good idea to get a schematic for it as well. If you had the schematic, you could pull out the first component after the ac input connector so that the rest of the circuit was out of the way, and use AC12 as the input point (to keep it clean, and then run a wire from there to the (former) output of the 7812..

Last edited by MrSlim; 3rd November 2011 at 02:11 AM.
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Old 3rd November 2011, 02:12 AM   #120
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Be careful what you do with the 12 volts to the 2092. It can be a bit touchy about decoupling close to the regulator and close to the 2092.
I didnt decouple mine well enough and I started getting clicking through the audio.
Turned out to be glitches on the VCC 12 volt rail.
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