Has any one built this 1KW amp?

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hier is 1 kw power amp
 

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This ESP P117 is a working circuit..I have simulated it in NS Multisim and it works...Power reaches to 1700 watts @ 4 Ohms with an output of 82.7 volts at THD of 0.8%..

Yeah, That's The Right Word, And For Rod's Design Let Me Tell You, It Works, And It's Very Powerful Indeed, I've Built The Project 117 And States 1500W @4 Ohm, Believe Me, This Design Worth The Effort, As Long As You Make Some Arrangements In The Bias Circuitry, The Circuit As Per Schematic Will Not Work Just Because Of That Detail, If You Apply Power Following Schematic You'll Certainly Blow Up The Output Stage Transistors, Once You Resolve The Little Puzzle And Get 150mv Across Driver's Emitter Resistor It Will Perform Powerful, Stable And Reliable With Lots Of Headroom, As Stated,

Hi AJT
greetings as you have stimulated ESP117 in MULTISIM and you say its a working circuit but according to KIMBERLATOR bias circuitry has some problems and it will blow the output stage how accurate are MULTISIM STIMULATIONS
WARM REGARDS
andrew lebon;)
 
2400 Watts @ 2ohms 0.000%THD1

1200W @ 4ohms 0.000% THD 1kHz, 0.004% THD 20kHz
2400W @ 2ohms 0.000% THD 1kHz.

All you need is at least 2.5KVA transformer, at least 50000uF of capacitance per rail per channel. hefty wiring, mammoth size heat sinks with fan cooling and a 4U chassis.
Just a simulation in multisim.

Regards,
Aniket
 

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1200W @ 4ohms 0.000% THD 1kHz, 0.004% THD 20kHz
2400W @ 2ohms 0.000% THD 1kHz.

All you need is at least 2.5KVA transformer, at least 50000uF of capacitance per rail per channel. hefty wiring, mammoth size heat sinks with fan cooling and a 4U chassis.
Just a simulation in multisim.

Regards,
Aniket

The front end looks like the Honey Badger design, do you have just a schematic?
 
1200W @ 4ohms 0.000% THD 1kHz, 0.004% THD 20kHz
2400W @ 2ohms 0.000% THD 1kHz.

All you need is at least 2.5KVA transformer, at least 50000uF of capacitance per rail per channel. hefty wiring, mammoth size heat sinks with fan cooling and a 4U chassis.
Just a simulation in multisim.

Regards,
Aniket

How are you going to get 2400watts@2ohm from a 2.5kva transformer....?

Serious simulation cowboys ...:)
 
Just a simulation in multisim.

The front end looks like the Honey Badger design, do you have just a schematic?

It's just a modification of my working amp, a humble 250W@4ohms.

http://www.diyaudio.com/forums/solid-state/211635-simple-100w-power-amp-27.html#post3541129

How are you going to get 2400watts@2ohm from a 2.5kva transformer....?

Serious simulation cowboys ...:)

it's pretty obvious, the transformer size is mentioned for 4 ohms load.
 
Does anyone have any experience with
THIS or any other 1KW amp?


Look at this short post >

http://www.diyaudio.com/forums/solid-state/215116-can-anyone-help-old-eti-magazine-article.html

This amp was my own built back in 1978 and quoted as a "monster stereo amp" in ETI-477 300 watt amp module. It had 24 output transistors 2N3055/MJ2955 in each channel and based on a highly modified set of ETI-413 modules. I basically redesigned the ETI413 100 watt amp circuit to deliver 600 watts into 2 ohms so that in bridge mode 2 modules gave me 600 watts into 4 ohms running on +/-45 volt Dc Rails. For stereo, I built 4 modules.

I also rebuilt the same basic amp a few years latter in a smaller case with half the amount of output transistors - 24x MJ15003 & MJ15004 devices ( 12 per channel ).

I'm now looking into maybe building another monster stereo amp ( or 2 mono blocks ) possibly with the new super bipolar transistors from Semelab, the MG9413K and MG6333K complementary devices. With the above amp - I had to get specially wound the 2 massive power transformers each delivering 64 volts AC @ 15 amps continuous ).

From these big amps I learn't quite a bit about amp construction and design. Unfortunately I failed to take not one photo. So many memories - so little evidence !

As for working on the Amp your interested in - NO I have not - But I've worked on Dc-Ac power Inverters which single "mono blocks" deliver up to 8,000 watts at 240 Volts Ac and have a string of power FETS extending into 50 or more in some units. In principle - these power Inverters are nothing more than a bloody big Audio Amp running at 50 cycles sine-wave ( and some square-wave ) having generally about <3% distortion - some with output transformers and others with directly coupled H-bridge arrangements.

The principles for building and testing such a beast, are not all that different from Audio. Some of these power Inverters can be coupled together for 3 phase or parallel operation extending up to 50Kw in size.
 
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