Sure irs2092 how to mod for 4 ohms?

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Bengali

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Joined 2006
#1
Hi,

The user guide shows spec at 4 ohm but from what little info is available, this only works at 8 ohms?

I would really appreciate some help on what to to mod for use with 4 ohm load since I have maggies.

What voltage current rating do I need for 4 ohm load? I'm looking at those Antek PSU for quicker assembly.

Can I use a tube pre amp to drive this sure amp module?

Thanks
 
#3
Thanks.

They replied and said it will work with 4 ohm but not full output. Do you know what the output would be?

Can the onboard pots be shorted or removed so one can use tube pre to drive it?

Curious if the tas5630 2x300 sound better for 4 ohm load?
 
#4
Bengali said:
Hi,

The user guide shows spec at 4 ohm but from what little info is available, this only works at 8 ohms?

I would really appreciate some help on what to to mod for use with 4 ohm load since I have maggies.

What voltage current rating do I need for 4 ohm load? I'm looking at those Antek PSU for quicker assembly.

Can I use a tube pre amp to drive this sure amp module?

Thanks
Click to expand...

I run a irs2092 amplifier into 2 ohms but I have 4 irfb4227's driven by transistor buffers.
The 2092 works ok into irf4019's and 4 ohms without gate drivers.

I run the 2092 into 4 ohms with 2 irfb4227 but again I need a gate buffer.

Another danger area with the 2092 is large smoothing capacitors. I found with 20,000uf per rail it thumps or howls on power down for about a second.

One of my early 2092 designs used an SRPP tube driver stage and it sounded very clean.
 
#6
Is the 2092 still need a gate buffer for 1pair irfb4227?

The user guide shows spec at 4 ohm but from what little info is available, this only works at 8 ohms?

I would really appreciate some help on what to to mod for use with 4 ohm load since I have maggies.
Click to expand...

You can check the IRAUDAMP7S datasheet, you need to replace some resistors and the voltage should be +-50 to 60VDC
 
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