Amp Internals 2 |
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kedwardsleisure
Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4938 |
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I think these are 40A each
Can't remember the type, all boxed up now, prob IXGH40N120 2 x 2700W into 2R Input rectifier is 50A More glue than behringer and twice as sticky!! Edited by kedwardsleisure - 17 August 2011 at 11:15pm |
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Kevin
North Staffordshire |
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Nitz V1505
Old Croc Joined: 16 September 2009 Location: UXBRIDGE Status: Offline Points: 1719 |
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I can just about see the holes now on the picture now you mention it. What a mission just to unhook the cables. Bet it sounds good though.
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LET THE BASS ROLL LIKE THUNDER
& THE TOPS LIKE LIGHTNING..... |
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ceharden
The 10,000 Points Club Joined: 05 June 2005 Location: Southampton Status: Offline Points: 11776 |
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Full bridge SMPS with paralleled IGBT's then? They haven't gone the whole hog and done a phase shifting full bridge because they'd need two transformers for that.
Still surprised that with the high spec IGBT's available nowadays that they need that many. |
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kedwardsleisure
Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4938 |
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No the cables are threaded through very small holes at the back but you have to disconnect the cables to get the control panel out of the cabinet forwards then withdraw the amp chassis backwards. That is just for purposes of the repair as in the pic.
Either way it is (like most modern ampegs) an abortion. This is a modern copy of the old SVT. In that one, you can take the valves out and remove a plate to get to the pcb underneath so you dont need to remove any of the hand-wired pcbs. In this modern copy, the plate is still there but they've wired oversize valve holders through it so you cant lift the plate up more than 2mm. That facility must've gone over the modern designer's head! Blinking heavy, finger trapping, maddening piece of expensive metal. PS £1500 retail. Give me a HiWatt any day of the week. Edited by kedwardsleisure - 08 September 2011 at 11:33pm |
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Kevin
North Staffordshire |
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Garra-67
New Member Joined: 21 August 2011 Status: Offline Points: 1 |
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Crest Pro 8200
PowerSoft Digam Q3204 Edited by Garra-67 - 21 August 2011 at 11:59am |
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kedwardsleisure
Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4938 |
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Kevin
North Staffordshire |
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googlebobby
Registered User Joined: 31 March 2011 Status: Offline Points: 13 |
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Could anyone tell me how to post the images so that I could post the amp that I had been used.
BGW/CREST AUDIO/MC2.
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djeddie
Old Croc Joined: 26 April 2004 Location: Bristol Status: Offline Points: 4125 |
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There's a 'how to post pics' guide in the newbie section... but I don't know if you can post up pics until you posted enough comments? |
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Chas n Dave : it's like Drum and Bass but with beards. E=mc² ±3dB
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kedwardsleisure
Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4938 |
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erm
sorry 8 igbts for switching plus 2 secondary regulators. So single DC bus and bipolar drive to smpsu transformer DC capacitors are just 2 180V 1000uF units in series off the AC line rectifier. Edited by kedwardsleisure - 17 August 2011 at 10:48pm |
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Kevin
North Staffordshire |
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Nitz V1505
Old Croc Joined: 16 September 2009 Location: UXBRIDGE Status: Offline Points: 1719 |
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Mmmmm, now thats lovely . Even though the control panel/unit sits at an angle in the case is there a reason why the cables run over the top of it? The only reason I can think of is to have the units sitting as they are in the photo whilst servicing. They could have put them at the rear of the control unit, or am I being too fussy!!!!!
Edited by Nitz V1505 - 08 September 2011 at 9:19pm |
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LET THE BASS ROLL LIKE THUNDER
& THE TOPS LIKE LIGHTNING..... |
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kedwardsleisure
Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 4938 |
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Ampeg SVT Classic
Edited by kedwardsleisure - 24 August 2011 at 9:36pm |
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Kevin
North Staffordshire |
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bass*en*mass
Old Croc Joined: 03 September 2009 Location: "unknown" Status: Offline Points: 4009 |
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http://desmond.imageshack.us/Himg585/scaled.php?server=585&filename=cimg1004.jpg&res=medium
Edited by bass*en*mass - 08 September 2011 at 8:06pm |
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