IRS2092 modular amp at 91v with A1000SMPS - diyAudio
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Old 20th May 2012, 11:54 AM   #1
paskal9 is offline paskal9  Malaysia
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Default IRS2092 modular amp at 91v with A1000SMPS

could the smps a1000 be wired for 91v to get the most power from the irs2092 modular amp? i'm looking to use them to drive my subwoofer. the driver is rated for 1200w rms.
not looking for continuous power at 91v from the modular amp as the subwoofer will only be handling <80Hz material during movie playback.

Last edited by Cristi; 22nd May 2012 at 09:41 AM. Reason: email address removed. my mail is full of spam already !!!!!!!
 
Old 22nd May 2012, 09:46 AM   #2
Cristi is offline Cristi  Europe
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As i explained in the email reply, the IRS2092 modular amplifier can be supplied with up to +-91V to get more than 800W at 4R with 0.1% THD or up to 1000W with higher THD level. At this power level the amplifier module has to be properly cooled and the supply voltage must be regulated to make sure will not exceed +-95V due to pumping phenomenon or will shut-down prematurely or even fail if stressed too much. Two modules connected in BTL mode supplied with lower voltage, +-84V for long term reliable operation is recommended to be used, and powered from SPS2000R instead. A1000SMPS cannot provide the necessary peak power for such power level, and the output voltage of this power supply is not so high unless custom transformer is made and the voltage is set on request. also the efficiency of SMPS2000R is higher, and this is an important factor at this power level.
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Old 22nd May 2012, 09:56 AM   #3
paskal9 is offline paskal9  Malaysia
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thanks for the reply.
is the a1000smps and the irs2092 modular amplifier in stock right now?

i'm gonna force air cool all the modules and not looking for continuous high power from them as the amp will only be loaded at maximum 450w into 4 ohm. in normal operation i'm guessing the amp will only be loaded less than 100w as it's only be covering <100Hz
Click the image to open in full size.

i'm asking about the extra headroom as i maybe intend to move them to another sub which will see them loaded with 650w into 4 ohm.
Click the image to open in full size.

extra headroom is always welcomed as it allows eq to be applied and not be limited by the amp.

Last edited by paskal9; 22nd May 2012 at 09:59 AM.
 
Old 24th May 2012, 07:35 AM   #4
Cristi is offline Cristi  Europe
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Standard output voltage is on stock, plus several complete boards except transformer, output caps and few components from the feedback loop which are installed upon order, depending on the required output voltage. in other words, other values than the standard ones are build on request. It takes one-two weeks more, as we need the transformer to be winded for the coresponding voltage.
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