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Old 7th December 2011, 02:09 PM   #131
ljm_ljm is offline ljm_ljm  China
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Quote:
Originally Posted by MrSlim View Post
The over/under voltage protection I'm talking about in the International Rectifier 2092 Reference design is for the power supply voltages, not the input voltage..


No power supply voltage forced close protection function.

But the power supply voltage and IRAUDMP7S principle is the same.

The power supply voltage not more than recommended. May be damaged.

Don't lower than the value of the request, will work is not stable.
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Old 7th December 2011, 02:12 PM   #132
ljm_ljm is offline ljm_ljm  China
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L15D Power Supply (+ -50V)
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Old 7th December 2011, 03:26 PM   #133
MrSlim is offline MrSlim  Canada
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Can you provide an exact schematic of your design please? I know you based your design on the Reference Design, the differences can be confusing. If users are attempting to replace the resistors to us a lower voltage supply, it is not straightforward to identify which are the correct components to replace.
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Old 8th December 2011, 08:51 PM   #134
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Hi all,

I'm building a 7.2 active speaker system that will require about 20 channels of amplification. They will all be line arrays with some being 2 way and some 3 way. For the amplification, I am interested in purchasing 10 kits (20 modules) but wonder what else I need to consider. I would like to drive my speakers at 4ohm.

1. Could I use those boards and combine them into this type of multi-channel amp?
2. What will be the cheapest way for me to combine suitable power supply in order to power all channels. I rather not have one power supply for each two modules but maybe that is needed?
3. Would the above work or do I need to consider something else?

As you can hear I'm a novice to this but would love to build something myself.

Any advice is appreciated.

Regards,
Exipnos
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Old 9th December 2011, 03:58 AM   #135
MrSlim is offline MrSlim  Canada
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Quote:
Originally Posted by exipnos View Post
Hi all,

I'm building a 7.2 active speaker system that will require about 20 channels of amplification. They will all be line arrays with some being 2 way and some 3 way. For the amplification, I am interested in purchasing 10 kits (20 modules) but wonder what else I need to consider. I would like to drive my speakers at 4ohm.

1. Could I use those boards and combine them into this type of multi-channel amp?
Sure, it's been done before.. I think these are great "modules" for multi-channel systems, since they are very small, for the power they are capable of.

Quote:

2. What will be the cheapest way for me to combine suitable power supply in order to power all channels. I rather not have one power supply for each two modules but maybe that is needed?
Probably something like a SMPS supply from Connexelectronic. Cristi has a number of Power supplies with different ratings, 300 - 1000W, so you could run up to 4 channels per 1000W supply.

Quote:

3. Would the above work or do I need to consider something else?
No, probably just casing, and layout, and if you want an all in one chassis, or split them up some way or the other..

Quote:

As you can hear I'm a novice to this but would love to build something myself.

Any advice is appreciated.

Regards,
Exipnos

Last edited by MrSlim; 9th December 2011 at 04:00 AM.
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Old 9th December 2011, 05:02 AM   #136
ljm_ljm is offline ljm_ljm  China
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Quote:
Originally Posted by MrSlim View Post
Can you provide an exact schematic of your design please? I know you based your design on the Reference Design, the differences can be confusing. If users are attempting to replace the resistors to us a lower voltage supply, it is not straightforward to identify which are the correct components to replace.
And the reference design is The same.


The reference.
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Old 14th December 2011, 08:36 AM   #137
Frosteh is offline Frosteh  United States
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Default L15D or L15D X2?

What is the difference between these? How does the sound compare between one stereo board and two mono boards?

IRS2092 IRAUDAMP7S high end class D stereo Amplifier | eBay

eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices
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Old 14th December 2011, 06:21 PM   #138
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Quote:
Originally Posted by MrSlim View Post
Probably something like a SMPS supply from Connexelectronic. Cristi has a number of Power supplies with different ratings, 300 - 1000W, so you could run up to 4 channels per 1000W supply.
Or more channels, depending on power requirement and where the amps are located.

Quote:
Originally Posted by Frosteh View Post
What is the difference between these?
Something to keep in mind is that the heat sink fins of the stereo board be vertical, unless you use a fan, requiring a much taller case than the mono boards.

If that's OK, then you can fit more amp channels in a given volume.
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Last edited by noah katz; 14th December 2011 at 06:26 PM.
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Old 14th December 2011, 07:08 PM   #139
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Quote:
Originally Posted by Frosteh View Post
What is the difference between these? How does the sound compare between one stereo board and two mono boards?

IRS2092 IRAUDAMP7S high end class D stereo Amplifier | eBay

eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices
I'm interested in purchasing the L15D or L20D from one of these sellers but wanted to contact along1986090 before hand but could not find any contact info. ljm_ljm or anybody else have their details?
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Old 14th December 2011, 07:13 PM   #140
Frosteh is offline Frosteh  United States
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Quote:
Originally Posted by noah katz View Post
Something to keep in mind is that the heat sink fins of the stereo board be vertical, unless you use a fan, requiring a much taller case than the mono boards.

If that's OK, then you can fit more amp channels in a given volume.
Does anyone know how tall this heatsink is (the stereo board)? I didn't factor that in. I have a 4" tall case.
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