New Valvestorm 18W TMB doesn’t seem as loud as it should be

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Martinoils
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New Valvestorm 18W TMB doesn’t seem as loud as it should be

Post by Martinoils »

Hi everyone
I just finished up this build and for some reason it is not as loud as it should be.
Any suggestions as to what could be causing this?
I will post voltages a little later.
Thanks in advance for any help, much appreciated
Here are the voltages
V1, pin1) 191 3) 1.5. 6) 220 8) 1.9
V2 pin 1) 181 3) 1.4 6) 294 8) 181
V3 pin 1) 302 3) 6.6 6) 301 8) 6.7
V4 pin 3) 14 7) 369 9) 354
V5 pin 3) 14. 7) 366. 9) 354
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Last edited by Martinoils on Tue 04/09/24 12:23 pm, edited 2 times in total.
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Bieworm
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Re: New Valvestorm 18W TMB doesn’t seem as loud as it should be

Post by Bieworm »

We need voltages first
1 x
"THIS should be played at high volume..preferably in a residential area"

Martinoils
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Re: New Valvestorm 18W TMB doesn’t seem as loud as it should be

Post by Martinoils »

Bieworm wrote:
Tue 04/09/24 12:06 pm
We need voltages first
Just added them above to original post
Thanks
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Bieworm
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Re: New Valvestorm 18W TMB doesn’t seem as loud as it should be

Post by Bieworm »

Check the values of the PI cathode/tail resistors. There is something really off. The cathode should measure 10x what you have.
Also add the grid voltages of the PI to the annotations.
2 x
"THIS should be played at high volume..preferably in a residential area"

Martinoils
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Re: New Valvestorm 18W TMB doesn’t seem as loud as it should be

Post by Martinoils »

Spot on, had an 82k (grey red orange)
Instead of 820 ( grey red brown)
Thank you very much
2 x

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