Orange Thunderverb Repair - Bias circuit modification and Fun with Phase Inverter tubes!
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- Опубліковано 5 тра 2023
- In this video I go through the steps of finding out why there was low volume in this awesome THUNDERVERB 200 amp from ORANGE. Nothing major needed repair however the customer's tubes were not falling within proper bias range. This is correctly easily by lowering a resistor value in the bias circuit and we need to perform the work in a manner that is easily reversible if needed in the future.
I also discovered the previous owner had installed a 12AY7 tube in the phase inverter position. This tube has much lower gain properties than a 12AX7 which will ultimately yield less phase inverter distortion. I thought it sounded really good this way so I took some sound clips of the effect each tube had on the overall sound. The customer ultimately wanted to go with the 12AX7 that the amp is designed for in that position since that's the stock part.
This one has been through some rough times but it gets a clean bill of health and has been sent on it's way.
You like those pinch harmonics! Lol. Nice video brother. Thank you for sharing. Learned a ton. Disposable solid state amps will be the future without the sharing of knowledge like this. Thank you!
12AY7 sounds a lot clearer in comparison. Love your videos man I appreciate your content.
Thank you! I'm glad you'r enjoying it.
@@purgasound hey bro, how much would it run me to have you work on my Peavey XXX head??? Is there away i can contact you to talk to you privately?
@@Flayed_Flesh23 brent@purgasound.com
Great amp man....they should have kept that one and the dual dark in production. Why they would eliminate the dual dark blows my mind...
Been watching some of your videos and I really enjoy the repair videos. Keep up the great work! Look forward to seeing more videos for you. Man this Orange amp was a mess!
Am I hearing some Zeke Riffs?
I'm going to guess that whoever retolexed the amp probably smacked the tubes against the reverb tank by mistake when removing the chassis. I pulled the chassis on my TV and did exactly that which broke the guide pin off in the socket.
Thanks for the AY7 vs. AX7 phase inverter comparison demo. I have a Mesa/Boogie .50 caliber+, and the amp's sound just seems to get too crowded for my liking when turned up.
fuses blow when they are old,any time you turn on a dc circuit with inductive spike and caps charging , it gets stressed out and it loses part of the metal wire,just like old filament bulbs
Man I’m still trying to get my model t to you! Where are you located and how can I get an appt?
I've never been a fan of Orange amps. Same for Vox too... Just never cared for their tone.
The human swarm comsumes the Earth!