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Poor PPX |
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GAZ. 
Old Croc 
Joined: 16 January 2007 Location: Hertfordshire Status: Offline Points: 2433 |
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 Posted: 19 October 2017 at 9:58pm |
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One of the last ones as JBL man says. I guess hitachi fets were running out at that point and they fitted the BUZ ones instead.
The vent on the back will be different to all the earlier ones too. The heat sinks heat up to just before the point it's uncomfortable to hold your hand on and the fan cuts in. just got back from the sellers house with a replacement PPX, they had another  Later type power switch but still hitachi fets. Took the top off before I loaded it into the car and apart from a little dust, and the usual resistors going a bit brown this one is perfect. |
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100% Earth Moving Bass
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cravings
Old Croc
Joined: 30 January 2007 Location: Ireland Status: Offline Points: 7441 |
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Posted: 19 October 2017 at 10:11pm |
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great stuff. that other one you had.. yeah that wasn't even a project.
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GAZ.
Old Croc
Joined: 16 January 2007 Location: Hertfordshire Status: Offline Points: 2433 |
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Posted: 19 October 2017 at 10:26pm |
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I’ve still got it, there will be a few bits salvageable so it will live on in the form of spares for my other ones.
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100% Earth Moving Bass
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kedwardsleisure
Old Croc
Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4947 |
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Posted: 20 October 2017 at 11:36pm |
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my longest DJ residency was in a PPX-powered venue; a stack of them higher than a man, driving Martin & OHM. They just kept going.
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Kevin
North Staffordshire |
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nickyburnell
Old Croc
Joined: 06 February 2005 Status: Offline Points: 4410 |
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Posted: 20 October 2017 at 11:40pm |
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I ran a 900 and 450 into solid red lights and covered in condensation every weekend for ages. Sodding amazing things, went through drivers, comps (messy times) and the amps just carried on. Only mod was fans on all time. The G Wagon of amps.
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It's everything, not everythink!
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valve head777
Old Croc
Joined: 27 July 2012 Location: East Sussex Status: Offline Points: 1781 |
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Posted: 20 October 2017 at 11:46pm |
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Was looking at the hire list of a long established hire outfit in Brighton where over 20 years ago I would hire ppx's from, and they still have them!
Eventually got my own, don't have it anymore but miss the thing still, and would consider getting another if the price was right. Great for mid and tops. Edited by valve head777 - 20 October 2017 at 11:46pm |
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Freedom of choice, choice of freedom.
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kedwardsleisure
Old Croc
Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4947 |
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Posted: 20 October 2017 at 11:49pm |
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er Land Rover
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Kevin
North Staffordshire |
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njw
Old Croc
Joined: 26 March 2010 Location: S. Wales Status: Offline Points: 2574 |
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Posted: 21 October 2017 at 2:00pm |
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I've said this before on here but when one of my XR3801's went pop one night the only amp I had spare was a PPX900 so that got patched in rather hurriedly. It was running a pair of HD215's and considering the Citronic was 1.5kw down on the C Audio the difference in output wasn't that great, as I said before, it was the loudest 900w I've ever heard. It ran quite happily for the rest of the night stuffed in the gap next to the amps on its side in no flightcase.
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nickyburnell
Old Croc
Joined: 06 February 2005 Status: Offline Points: 4410 |
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Posted: 21 October 2017 at 3:36pm |
Yeah, but if I had said Land Rover someone would have said LandCruiser! Went for the top, ! But I see your point, British.... |
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It's everything, not everythink!
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GAZ.
Old Croc
Joined: 16 January 2007 Location: Hertfordshire Status: Offline Points: 2433 |
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Posted: 21 October 2017 at 5:03pm |
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Put the poorly PPX on the bench earlier. First I gave the burned PCB a scrub with some soapy water.
 Didn’t look nearly as bad after a good clean. Then I did some testing. First off I checked the 2 bridge rectifiers, both ok. Main fuses also ok. Plugged it in, switch works.  Both secondary of +/- 80v present and working. So power supply is still good Next I removed all the output mosfets and tested them..  Those are all good mosfets amazingly!  Just 3 dead. 2 completely blown and one leaky. I expected a lot worse than that to be honest. |
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100% Earth Moving Bass
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jbl_man
Moderator Group 
Joined: 12 January 2005 Location: London. Status: Offline Points: 11155 |
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Posted: 21 October 2017 at 6:11pm |
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Well Done Gary,would be an epic endevour if you could bring that back to life again.....
We need a "show off your PPX thread"....have a big pile of them here,most are the early mk1's now,so have to be nigh-on thirty years old now.  |
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Be seeing you.
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Dub Specialist Sound
Old Croc
Joined: 15 November 2013 Location: Smethwick Status: Offline Points: 4873 |
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Posted: 21 October 2017 at 6:15pm |
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Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...
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kedwardsleisure wrote: