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've got one of those here as well!
Edited by kedwardsleisure - 01 August 2017 at 10:23pm |
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Kevin
North Staffordshire |
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mini-mad
Old Croc Joined: 13 July 2012 Location: london Status: Offline Points: 6903 |
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I would expect nothing less from you |
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If it sounds like a gorilla is trying to escape, turn it down.
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odc04r
Old Croc Joined: 12 July 2006 Location: Sarfampton Status: Offline Points: 5483 |
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Was a different time when PCBs were hand drawn and etched. Much more fun to look at in a lot of ways than a modern board.
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jbl_man
Moderator Group Joined: 12 January 2005 Location: London. Status: Offline Points: 11154 |
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Bigger.fatter tracks too,and easy to repair and unsolder components, you didnt need a microscope and a hand as steady as the guy who paints the coachlines for Rolls Royce to fix them!
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Be seeing you.
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odc04r
Old Croc Joined: 12 July 2006 Location: Sarfampton Status: Offline Points: 5483 |
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Indeed, progress does have some costs. SMD re-work is not so bad with a bit of practice, some flux, and a magnifying lamp. But I know what I'd work on given the choice...
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njw
Old Croc Joined: 26 March 2010 Location: S. Wales Status: Offline Points: 2572 |
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When men were men and amps were, er, amps...... |
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odc04r
Old Croc Joined: 12 July 2006 Location: Sarfampton Status: Offline Points: 5483 |
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When amps were 40kg and roadies were scared.
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salt
Registered User Joined: 28 June 2008 Location: STAFFORDSHIRE Status: Offline Points: 41 |
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What price for a mark 1 Studiomaster 800b would i expect to get on Ebay?
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jbl_man
Moderator Group Joined: 12 January 2005 Location: London. Status: Offline Points: 11154 |
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It's 40 years old,price is entirely dependent on condition.
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Be seeing you.
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davystapleton95
New Member Joined: 13 September 2017 Status: Offline Points: 1 |
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Hello, do ye know where i can get a switch for channel a Gain for this exact amp? mine fell and broke ! thanks
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alili
New Member Joined: 20 September 2012 Location: tunisia Status: Offline Points: 2 |
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i have schematics for the hpa1400 , same amp but with a traditional psu i think .
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Tonskulus
Registered User Joined: 15 September 2017 Location: Finland Status: Offline Points: 425 |
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Alto mac 2.3, yet another qsc rmx copy?
Transformer has 4 x 54Volt output / secondary windings. Bus voltage 83Volts.. Claimed output power: 2x285W/8ohm rms 2x510W/4ohm rms 1x1000W/8ohm rms 1x2200W/4ohm (EIAJ) rms ratings are pretty much ok, according to supply voltage. Should I take my dummyload and make some real tests? :D Power amp board is quite neat anyway, having 8 power bjt's / channel. Edited by Tonskulus - 10 October 2017 at 9:25pm |
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