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Amp Internals 2
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Earplug View Drop Down
Old Croc
Old Croc


Joined: 03 January 2012
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Points: 7216 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 09 June 2021 at 5:29pm
Yes, who knows. Amp designers are always trying to do things differently. Sometimes over complicating what should be a fairly simple process. 


Earplugs Are For Wimps!
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kedwardsleisure View Drop Down
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Points: 4947 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kedwardsleisure Quote  Post ReplyReply Direct Link To This Post Posted: 09 June 2021 at 10:54pm
probably more to do with impedance matching
Kevin

North Staffordshire
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Old Croc
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Points: 7216 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 10 June 2021 at 6:08am
The cab has 4 x 12", 1 x 8" & 1 x 1.4".

IIRC, the amp for the 12's was standard Class G. Mid and top with the transformer.


From the spec sheet:-

  • Active, high-output, wide dispersion 3-way system
  • 80° x 70° coverage pattern
  • High output, 133dB in High Pass Mode Operation
  • Four 12″ high-precision transducers
  • Low distortion, horn-loaded 8″ mid-range transducer
  • 3″ titanium diaphragm compression driver
  • 18mm birch plywood construction
  • 1500W high-effi ciency, high-current amplifier for woofers
  • 300W Trans-Fet amplifier for mid-range
  • 150W Trans-Fet amplifier for compression driver
  • On-board acoustic management control system

"Trans-Fet" sounds to me like marketing speak BS, like the Carver "Magnetic Field" stuff. The extra cost of those transformers is a bit crazy. These days, the 8" & 1.4" would just be driven by a couple or 3 3886's or 7293's!  LOL
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imageoven View Drop Down
Old Croc
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Joined: 28 March 2007
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Points: 2186 		Post Options Post Options   Thanks (0) Thanks(0)   Quote imageoven Quote  Post ReplyReply Direct Link To This Post Posted: 10 June 2021 at 8:56am
Originally posted by Earplug Earplug wrote:

"Trans-Fet" sounds to me like marketing speak BS, like the Carver "Magnetic Field" stuff.


Now known as LBGTQ+ Fets...
Keep pushing on, things are gonna get better.
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Old Croc
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Points: 7216 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 10 June 2021 at 9:10am
Originally posted by imageoven imageoven wrote:

Originally posted by Earplug Earplug wrote:

"Trans-Fet" sounds to me like marketing speak BS, like the Carver "Magnetic Field" stuff.


Now known as LBGTQ+ Fets...



You should be on the Mackie Marketing Team!   LOL LOL LOL
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mustang_flht View Drop Down
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Points: 9 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mustang_flht Quote  Post ReplyReply Direct Link To This Post Posted: 27 June 2021 at 5:38pm
PAS audio 2002 PCA, Mosfet K1058 & J162 transistors. The amp is handcrafted in Germany.





Edited by mustang_flht - 27 June 2021 at 5:48pm
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kedwardsleisure View Drop Down
Old Croc
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Points: 4947 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kedwardsleisure Quote  Post ReplyReply Direct Link To This Post Posted: 03 August 2021 at 3:23pm
Mackie FRS-2800

(complete with spare transistor front piece)
Kevin

North Staffordshire
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queen_of_spades View Drop Down
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Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote queen_of_spades Quote  Post ReplyReply Direct Link To This Post Posted: 04 August 2021 at 11:33pm
Anyone happen to have pics of Peavey CS1000 (not CS1000-X) internals, esp under the upper PCB where there are multiple spade connectors
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Points: 11155 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jbl_man Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2021 at 4:53pm
"Anyone happen to have pics of Peavey CS1000 (not CS1000-X) internals, esp under the upper PCB where there are multiple spade connectors"

 Do these help at all? CS1000. not an X.











Edited by jbl_man - 06 August 2021 at 4:55pm
Be seeing you.
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jbl_man View Drop Down
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Points: 11155 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jbl_man Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2021 at 5:02pm
The 3 spades on the right, are in the correct order they came off the board, if that is what you wanted?  So white, grey, and then red.




Be seeing you.
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Old Croc
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Points: 4947 		Post Options Post Options   Thanks (0) Thanks(0)   Quote kedwardsleisure Quote  Post ReplyReply Direct Link To This Post Posted: 17 August 2021 at 2:40pm
A bunch of shrivelled chevins.







Kevin

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Points: 11155 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jbl_man Quote  Post ReplyReply Direct Link To This Post Posted: 17 August 2021 at 3:19pm
That's rustier than a Lancia Beta. LOL
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