Master room xl 305 problem

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allenm
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Master room xl 305 problem

Post by allenm » Fri Apr 09, 2010 1:58 pm

Alright so I got my new spring reverb in last night. I starting testing the left and right sides and I noticed that the left side has more noise than the right. The left side sounds like wind hitting a microphone, the right side is perfect nothing out of the ordinary. The left side Noise changes from
Whoooooooooooshhhhh to whhhhhhooooooo, to whhooooooooossssss.
Any one that might know whats wrong?

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joninc
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Post by joninc » Fri Apr 09, 2010 6:33 pm

have a tech look at it - might need to be recapped. i have one and they eq (2khz) on each side is noticeably different. they are old beasts but really fun and vibey!
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allenm
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Post by allenm » Fri Apr 09, 2010 7:46 pm

Recapped? Any way I can do it myself?

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joninc
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Post by joninc » Sat Apr 10, 2010 4:12 pm

i don't know - are you a tech? do you have electronics knowledge and tools/parts?
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allenm
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Post by allenm » Sat Apr 10, 2010 8:23 pm

nope to at all. I guess I'll just return it and wait for another one to show one ebay

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johnny7
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Post by johnny7 » Sat Apr 10, 2010 10:26 pm

Those have socketed op-amps. Mine had one of that was bad, so that side was noisy.
I think you can swap them and discover whether that is the problem.
J7

allenm
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Post by allenm » Sun Apr 11, 2010 12:01 am

What do the OP amps look like? and where can I find replacements?

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joninc
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Post by joninc » Sun Apr 11, 2010 12:16 am

don't return it - those units rule. you might need to spend $75 getting it tweaked but it will be worth every penny.
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johnny7
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Post by johnny7 » Sun Apr 11, 2010 1:17 am

It looks like a spider - black rectangle with 4 legs on either side.
Should have four numbers on it. If you take a tiny screwdriver and pry up, it ought to come out. You also should be able to find the other one that is the same( by the number designation). These are readily available online...oh, I should mention..I am not a tech! But switching these is a simple and revealing test>

allenm
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Post by allenm » Sun Apr 11, 2010 10:46 am

do you know of a website where I can purchase the correct ones?

LaurenD
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Post by LaurenD » Sun Apr 11, 2010 11:51 am

Hi there.. I need some info regarding Master Room XL-305 Reverb, I need the schematics or at least the pin out for the IC ESM532C DIL configuration. Anyone can help?

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