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10th March 2011, 03:40 PM
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#1 |
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diyAudio Member
Join Date: Oct 2008
Location: Winterswijk
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1000W tube amplifier
Philips EL6471 with QB3.5 750 as end tube. This a cool amp
  YouTube - 1000W Amplifier Philips EL6471 at full power YouTube - Philips EL6471 playing stereo part 3 power test glow QB3.5 YouTube - Philips EL6471 3,2 Kv on 250 Ma more music YouTube - 1kW Philips EL6471 Tube Amplifier from 1955 demonstrates its original sound - listen! Enjoy
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( (( KUGELWELLE )) ) recent projects :OB-mk1 /fatboy / monitor-xl / Horn-AM / dappolito / td124-mk1-rb301 / Hybrid-pse / Vfet Last edited by Helmuth; 10th March 2011 at 03:46 PM. |
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10th March 2011, 03:49 PM
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#2 |
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diyAudio Member
Join Date: Apr 2006
Location: holland
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Does somebody has a schematic diagram or a service doc. from this amplifier ?
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10th March 2011, 04:12 PM
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#3 |
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diyAudio Member
Join Date: Oct 2007
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More info on the tube and a link to the data sheet pdf file (1.29M) here-
QY4-250 Heaters at 5V at 14A! Might be a task for an old PC power supply? I have a couple of these tubes if anyone wants one for experimentation, nice bottles in Pyrex glass (I think) and lovely solid graphite anode. Les |
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10th March 2011, 04:22 PM
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#4 |
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diyAudio Member
Join Date: Oct 2008
Location: Winterswijk
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More info on the EL6471
Großverstärker EL6471 Radio Philips Radios -
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( (( KUGELWELLE )) ) recent projects :OB-mk1 /fatboy / monitor-xl / Horn-AM / dappolito / td124-mk1-rb301 / Hybrid-pse / Vfet |
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10th March 2011, 05:41 PM
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#5 |
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diyAudio Member
Join Date: Apr 2006
Location: holland
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Nice photo's, but no service or schematic diagram of this amplifier.
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10th March 2011, 06:29 PM
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#6 |
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diyAudio Member
Join Date: May 2009
Location: Wellington
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You call that an amp? Now these are amps...
Champ 1000 Watt Tube Amp VTL - Reference Monoblocks Amplifiers with valves |
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10th March 2011, 08:01 PM
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#7 |
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diyAudio Member
Join Date: Jan 2005
Location: Lokeren, Belgium
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What would you do with a schematic? Do you need that much power? Do you have 3-phase power in your living room?
FWIW, the schematic would be very predictable, too...
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Never send a human to do a machine's job. --Agent Smith |
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11th March 2011, 06:55 AM
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#8 |
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diyAudio Member
Join Date: Apr 2006
Location: holland
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Thanks for the links.
That I ask for the service doc and or schematic diagrams is because I collect all Philips valve amplifiers service doc's as a hobby. This service doc or schema is almost the only one I do not have. |
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11th March 2011, 11:30 PM
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#10 |
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diyAudio Member
Join Date: Dec 2009
Location: near Belgrade
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Philips EL6471 Service Manual + Schematic(pdf) : http://83.117.57.34/nvhr/Philips_EL6471.pdf
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