My First WOPL 400 Series 2 Build

TimD

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Jun 26, 2025
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Hmmmm . . . You put the larger caps in with the WOPL stuff, right? You might check the main bridge rectifier to see if it has failed due to the higher inrush, or (god forbid) one of the caps was installed backwards and has failed into a short. A bit of a longshot, but not impossible, considering that the rail fuses are not failing.
 

Gepetto

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Hmmmm . . . You put the larger caps in with the WOPL stuff, right? You might check the main bridge rectifier to see if it has failed due to the higher inrush, or (god forbid) one of the caps was installed backwards and has failed into a short. A bit of a longshot, but not impossible, considering that the rail fuses are not failing.
The main caps are installed with correct polarity based on the photos.
 

Fishoz

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Always learning!
“Toggle switch”. We don’t need no damn toggle switch!

like Joe, I’d like to know where the switch is. I don’t believe in an on off switch for an amp. My 400 has been up and running 10 years…powered down only three times…Lee..can you believe it’s been 10!!!!

Glad you have you’re baby singing…enjoy.
 

TimD

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Jun 26, 2025
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“Toggle switch”. We don’t need no damn toggle switch!

like Joe, I’d like to know where the switch is. I don’t believe in an on off switch for an amp. My 400 has been up and running 10 years…powered down only three times…Lee..can you believe it’s been 10!!!!

Glad you have you’re baby singing…enjoy.
True, but then again, a switch/breaker combo instead of fuses does have it's merits (as typically found on pro level amps).
 

laatsch55

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“Toggle switch”. We don’t need no damn toggle switch!

like Joe, I’d like to know where the switch is. I don’t believe in an on off switch for an amp. My 400 has been up and running 10 years…powered down only three times…Lee..can you believe it’s been 10!!!!

Glad you have you’re baby singing…enjoy.

10 years!! Jeez...
 
Joined
Nov 13, 2023
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Tennessee (Gods Country)
First, I'd like to thank Joe, Who was gracious enough to give me a call yesterday. I was embarrassed after posting about the meter switch and didn't want to look more of a fool, Than I already had. It was easier for me to explain over the phone, More understandable for Him I think, Than my writing on the forum. It didn't take Joe but a minute to figure out what the problem was. (So Smart) I was using the 5amp Rail fuses in the main power, Which should've been a 10amp. :D When I ordered my kit, I ordered fuses with the fuse holders. Due to my lack of knowledge and experience, I used them, Thinking they were the ones to use. OOPS. :oops: Hopefully, A lesson I won't soon forget. Learning all the time. I greatly appreciate everyone for their help and guidance throughout this build. All the advice and encouragement given, Helped me produce a SWEEEEEEEET sounding amp. Thank you, So much. You guys are AWSOME!


Sherri "ROCKIN" around 2 O'clock :headbang::headbang::headbang:
20250722_154200.jpg
 

Gepetto

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First, I'd like to thank Joe, Who was gracious enough to give me a call yesterday. I was embarrassed after posting about the meter switch and didn't want to look more of a fool, Than I already had. It was easier for me to explain over the phone, More understandable for Him I think, Than my writing on the forum. It didn't take Joe but a minute to figure out what the problem was. (So Smart) I was using the 5amp Rail fuses in the main power, Which should've been a 10amp. :D When I ordered my kit, I ordered fuses with the fuse holders. Due to my lack of knowledge and experience, I used them, Thinking they were the ones to use. OOPS. :oops: Hopefully, A lesson I won't soon forget. Learning all the time. I greatly appreciate everyone for their help and guidance throughout this build. All the advice and encouragement given, Helped me produce a SWEEEEEEEET sounding amp. Thank you, So much. You guys are AWSOME!


Sherri "ROCKIN" around 2 O'clock :headbang::headbang::headbang:
View attachment 87026
Great looking amp Doug, and great looking on the inside too due to your excellent workmanship...
 
Joined
Nov 13, 2023
Messages
126
Location
Tennessee (Gods Country)
Thank You Joe, for the kind words. That's one awesome kit You sell. It turned out better than I expected, With me doing the work. If you can read and follow the directions, Listen to the Advice of previous builders, And take your time, It can be a very enjoyable experience. I'm looking forward to starting the build on my 700 Sll. I'm sure, With the help of the members here, I should be able to work my way through to another Awesome Build. Thanks again Guys....:)
 
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