im thinking to buy this module as matching transistors will be much more expensive for a 5 pair output stage.
http://www.connexelectronic.com/documents/LME49810_Audio_Amplifier_Module.pdf
now the problem is that we would be driving two 15 inch drivers in parallel with effective imp 4 ohms... now I just want to know two things..
1. what to do so that the amp is stable in 2 ohms for driving those 15 inch drivers..
2. How much current can be delivered by each transistor in operation.
4.If high VA psu is placed then does the amp be stable in 2 ohms?
http://www.connexelectronic.com/documents/LME49810_Audio_Amplifier_Module.pdf
now the problem is that we would be driving two 15 inch drivers in parallel with effective imp 4 ohms... now I just want to know two things..
1. what to do so that the amp is stable in 2 ohms for driving those 15 inch drivers..
2. How much current can be delivered by each transistor in operation.
4.If high VA psu is placed then does the amp be stable in 2 ohms?
For a proper 2 ohm operation the output stage must be a Triple emitter follower one a.k.a 3-deep darlington, though the LME49180 shows an inbuilt pre driver stage but the effectiveness cannot be tested until experimented. Also the output transistors are less in numbers for what is required in 2 ohm operation.Other things like heatsinks and powersupply also needs to be doubled up.
If you want to drive the amp on +/-84 rails then at 2 ohms the power would be around 1kw provided the supply is rock solid and not sagging, which means the total output current would be 63A peak, going for atleast 10 pairs in output puts each device around 6A of load current sharing.
Basically this design is not a pro-audio one, better get something more robust .
If you want to drive the amp on +/-84 rails then at 2 ohms the power would be around 1kw provided the supply is rock solid and not sagging, which means the total output current would be 63A peak, going for atleast 10 pairs in output puts each device around 6A of load current sharing.
Basically this design is not a pro-audio one, better get something more robust .
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what has to be done to make this module for pro audio application. Considered it can be used at 4ohm.
For 500W
Im using 1KVA R-Core psu with CRGO core material.
1,00,000uf / 100v one big capacitor for each rail.
For 1000W i would be using 2KVA psu
I would like how can I add more output transistors? how many pairs can be added for that driver?
I would like to drive this one..
http://www.jblpro.com/catalog/general/product.aspx?PId=117&MId=3
the speaker is rated as 1200RMS into 4 ohms.
Thought to use two of that above modules in bridged mode with DRV134..
For 500W
Im using 1KVA R-Core psu with CRGO core material.
1,00,000uf / 100v one big capacitor for each rail.
For 1000W i would be using 2KVA psu
I would like how can I add more output transistors? how many pairs can be added for that driver?
I would like to drive this one..
http://www.jblpro.com/catalog/general/product.aspx?PId=117&MId=3
the speaker is rated as 1200RMS into 4 ohms.
Thought to use two of that above modules in bridged mode with DRV134..
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For 500W
Im using 1KVA R-Core psu with CRGO core material.
1,00,000uf / 100v one big capacitor for each rail.
For 1000W i would be using 2KVA psu
you have no idea what you are doing
better forget about it
you have no idea what you are doing
better forget about it
actually the above config is for 4 ohms not for 2 ohms...
using a 2kva suppy for class AB and expecting 1000watts wouldnt be a problem I believe... or we might even increase the psu to 3kva for more headroom...
i think this one would be sufficient for driving it in 4 ohms..
1000W Mono High Power Amplifier AMP For Home Audio Or Stage Use
13 pairs of output devices...
1000W Mono High Power Amplifier AMP For Home Audio Or Stage Use
13 pairs of output devices...
what should be the voltage supply if i want to bridge the 500W into 4 ohms amplifiers..
the load imp of the speaker will be about 4 ohms.
If its single module the amp can go upto 550w in 4 ohms with +/-80v supply..
now if its bridged then what should be the voltage supply?
the load imp of the speaker will be about 4 ohms.
If its single module the amp can go upto 550w in 4 ohms with +/-80v supply..
now if its bridged then what should be the voltage supply?
High voltage class AB amps are unpractical as they dissipate a lot and weigh a ton.
Better to go classD or H imho.
I agree with you. I would use high-power Class D instead a monster Class AB as this is for a sub.
i think this one would be sufficient for driving it in 4 ohms..
13 pairs of output devices...
I dont understand, why the connex
1000watt amp module fully assembled and tested ? yeah, right
using a 2kva suppy for class AB and expecting 1000watts wouldnt be a problem I believe... or we might even increase the psu to 3kva for more headroom...
ok, no problem
I have 2kVA trafos, and I can barely lift just one of them
Looking at Connex. 550 w moule specs, 78v rails 4R load is plenty
ah, its standard specs ? the shown heatsink looks a bit small for that
but this 1200watt from Ground Sound I would trust more
quote
The maximum power output depends on voltage supply, heat sink and load conditions. Recommendations: Voltage supply of + / - 95V, heat sink less than 0,2 K / W and minimum load of 1,5Ω.
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