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Spot the deliberate mistake

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kedwardsleisure View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kedwardsleisure Quote  Post ReplyReply Direct Link To This Post Posted: 05 February 2015 at 1:46pm
Yes FIVE different types of output transistor.
Using better ones on the repaired channel eg higher voltage versions of the regular transistor would be ok. We have MJ15022, MJ15023, MJ15024, MJ15025 and MJ15003.
Maybe on a cheap disco amp it would be the only answer but a PM1000..and it didn't work anyway?

   
K. Edwards Electronics Engineers

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odc04r View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote odc04r Quote  Post ReplyReply Direct Link To This Post Posted: 05 February 2015 at 2:36pm
Well maybe you get some spares out of it if they aren't all dead or counterfeit. Doubt the owner wants them back.
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Earplug View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 05 February 2015 at 4:49pm
"Yes FIVE different types of output transistor."

So designed to work over 5 different frequency bands!  LOL


Earplugs Are For Wimps!
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Peter Jan View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Peter Jan Quote  Post ReplyReply Direct Link To This Post Posted: 05 February 2015 at 4:58pm
Originally posted by Earplug Earplug wrote:

"Yes FIVE different types of output transistor."

So designed to work over 5 different frequency bands!  LOL


Nah... can't you see ? Someone made it into a 5-tier Class H design LOL
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kedwardsleisure View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kedwardsleisure Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2015 at 5:40pm
Soft Start relay from Macrotech 5002VZ.
Complaint of mains transformer humming even with power switch 'off'.



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burningbush View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote burningbush Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2015 at 5:53pm
Vent hole conversion, runs cooler now.
music is the message
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mini-mad View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mini-mad Quote  Post ReplyReply Direct Link To This Post Posted: 12 March 2015 at 10:35pm
..bass port?

Explains why they chug out bass all nite long...

If it sounds like a gorilla is trying to escape, turn it down.
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Earplug View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2015 at 8:35am
Another bullet hole?  Tongue


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kedwardsleisure View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kedwardsleisure Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2015 at 1:15pm
it's been dinged by something but hard to see how, as it's pretty tight on the pcb and it hasn't been out before.
K. Edwards Electronics Engineers

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MattStolton View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MattStolton Quote  Post ReplyReply Direct Link To This Post Posted: 13 March 2015 at 3:28pm
Originally posted by kedwardsleisure kedwardsleisure wrote:

it's been dinged by something but hard to see how, as it's pretty tight on the pcb and it hasn't been out before.
Someone shoved a screw driver into it, to try and separate housing from internal gubbings.

Like how you remove engine oil filters on blocks, when stuck......
Matt Stolton - Technical Director (!!!) - Wilding Sound Ltd
"Sparkius metiretur vestra" - "Meter Your Mains"
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kedwardsleisure View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote kedwardsleisure Quote  Post ReplyReply Direct Link To This Post Posted: 18 March 2015 at 4:13pm
Another modified macrotech



K. Edwards Electronics Engineers

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all bass View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote all bass Quote  Post ReplyReply Direct Link To This Post Posted: 18 March 2015 at 5:52pm
Trying to recreate the Belchfire i guess...
Get your free line array plans here!
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