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orange crush 50bxt schematics

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godathunder View Drop Down
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    Posted: 07 November 2019 at 3:54pm
would anyone have a diagram for this?

Im trying to work out if the compressor is defeatable or adjustable. 

theres nothing obviously adjustable on the board

having a permanently engaged low threshold high ratio compressor pretty much destroys its usefulness as a practice amp
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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: 07 November 2019 at 10:18pm
Why do you think it has a compressor in it? It may well do, but the manual doesn't refer to it.

Might be putting some sort of overdrive style circuit in before a solid state amp to try and get a few extra harmonics going? That would give the effect of compression. Might show up as some anti parallel diodes/LEDs or strings of diodes in the small signal circuitry, probably pre-EQ if anywhere.

Can't find any circuits or schematics unfortunately.
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godathunder View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote godathunder Quote  Post ReplyReply Direct Link To This Post Posted: 08 November 2019 at 12:04pm
Ive just got a message back from orange. theres a compressor/limiter built into the output chip as protection.

the compression I was getting was quite extreme and independent of gain or volume settings. very quick attack and release, high ratio, very low threshold - actually sounded quite nice but hardly conducive to maintaining a sense of your own dynamics

rather oddly, since I reassembled the amp the compression has gone - always nice to know theres a latent fault lingering

anyway, its only an inbetweener until I find an ampeg micro vr at a sensible price


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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: 08 November 2019 at 12:43pm
Interesting, hard to explain that one. Knowing the output chip might help but if the effect has gone, /shrug. These intermittent things are often a board interconnect issue if reseating them all has helped.


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