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Amp Internals 2 |
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nickyburnell 
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Joined: 06 February 2005 Status: Offline Points: 4410 |
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 Posted: 06 July 2015 at 8:34pm |
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I've owned 6 KXR2000 mk1. Loud, good 8r performance, but as they aged they all needed re soldering all over the place
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It's everything, not everythink!
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michel29
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Joined: 04 November 2014 Location: france brittany Status: Offline Points: 55 |
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Posted: 07 July 2015 at 10:33pm |
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less than 5 Kilograms ?
2x 1000w /8 ohm ? good for sub duty ? |
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michel29
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Joined: 04 November 2014 Location: france brittany Status: Offline Points: 55 |
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Posted: 07 July 2015 at 10:55pm |
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DB technologies HPA1400
one power board     it's souds good on mid-tops im surprised , all NPN devices on left heatsink, all PNP devices on right heatsink 8 devices per heatsink 4 per channel heatsink at supply-voltage ? no insulating material under devices ? the HPA 2800 as 2 power-boards: http://forum.speakerplans.com/amp-internals-2_topic44897_page54.html 2 small amplifiers the worst Boost npa215 aprox 2*150w/8 ohm with a beautiful hum i've reduce this hum with a modification of groud routing , bad conception  audiophony AS600 approx 2x110w/8 ohm sounds correct replaced an output relay    Edited by michel29 - 07 July 2015 at 11:01pm |
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kedwardsleisure
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Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4947 |
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Posted: 07 July 2015 at 10:57pm |
I've just scrapped one of those |
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Kevin
North Staffordshire |
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michel29
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Joined: 04 November 2014 Location: france brittany Status: Offline Points: 55 |
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Posted: 07 July 2015 at 11:03pm |
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HPA1400
defaut ? |
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swannie
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Joined: 15 March 2008 Location: WEYMOUTH Status: Offline Points: 276 |
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Posted: 08 July 2015 at 11:45am |
Ive used them to drive some 21'' turbo bins, they do a surprisingly good job for what they are, but if u can live with the weight, nothing touches a proline 3000 for less than £500 on sub duty. Very good for a budget amp rack, walks over the inukes, but i wouldn't be rushing out to fill an amp rack with them unless i was on a shoestring budget.
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kedwardsleisure
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Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4947 |
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Posted: 08 July 2015 at 1:20pm |
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Behringer EPX2000
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Kevin
North Staffordshire |
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Earplug
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Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216 |
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Posted: 08 July 2015 at 6:25pm |
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"heatsink at supply-voltage ? no insulating material under devices ?" Not that uncommon, eg Crown grounded bridge topology. And I had a couple of Harrison amps that were built like that as well (X1000 series). |
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Earplugs Are For Wimps!
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simonp1100
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Joined: 01 September 2008 Location: Bristol Status: Offline Points: 1110 |
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Posted: 08 July 2015 at 6:44pm |
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[QUOTE=michel29]DB technologies HPA1400
one power board it's souds good on mid-tops im surprised , all NPN devices on left heatsink, all PNP devices on right heatsink 8 devices per heatsink 4 per channel heatsink at supply-voltage ? no insulating material under devices ? the HPA 2800 as 2 power-boards: http://forum.speakerplans.com/amp-internals-2_topic44897_page54.html 2 small amplifiers the worst Boost npa215 aprox 2*150w/8 ohm with a beautiful hum i've reduce this hum with a modification of groud routing , bad conception audiophony AS600 approx 2x110w/8 ohm sounds correct replaced an output relay [/QUO The insides of the DB technologies HPA1400 amplifier look the same as a Nova DXP3600, even has that sealed black box near the input stage, is it made by the same people  .Edited by simonp1100 - 08 July 2015 at 6:45pm |
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michel29
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Joined: 04 November 2014 Location: france brittany Status: Offline Points: 55 |
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Posted: 15 July 2015 at 9:45pm |
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a french oldie
Redson R400 approx 2x 150w /8 ohm both channels driven heavy , a big "E-I" transformer 2 x 1000µf 63v capacitors 2x MJ15003 2x MJ15004 per channel no fan but big heatsinks   |
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JR.junior
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Joined: 14 December 2009 Location: Slovenija Status: Offline Points: 1789 |
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Posted: 16 July 2015 at 10:33am |
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got in for service 4th SAMSON PG2200, all of them with same problem, shortet primary on trafo..
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Support the scoop technology, larger mouth plays louder!
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michel29
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Joined: 04 November 2014 Location: france brittany Status: Offline Points: 55 |
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Posted: 16 July 2015 at 8:36pm |
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transformer primary shorted ?
transformer shorted without any devices at secondary ? no rectifier bride ? toroïd transformer ? |
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DB technologies HPA1400