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Using a Digital Multimeter + Amp Startup Procedure - AT THE BENCH! 

Headfirst Amps
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26 авг 2024

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Комментарии : 21   
@Deus5691
@Deus5691 2 месяца назад
Outstanding Video! You have wonderful way of explaining the technical aspects of why and what you are doing, that even a novice like myself can follow and easily understand, Bravo!!!!!
@HeadfirstAmps
@HeadfirstAmps 2 месяца назад
Thanks!
@clintn6677
@clintn6677 4 месяца назад
Haha I just built a Mojotone build using Alex's pcb and was wanting to find a vid on first power up and this is the first vid that popped up. I should know just go to your channel by now
@cheyneluke9330
@cheyneluke9330 3 года назад
Perfect timing! I’m nearly finished my amp and this is gold! Thanks Jason!
@chaos1291975
@chaos1291975 10 месяцев назад
thank you so much for making this video. i have just started on amps and could not find a good video explaining first start up and checks . i have just finished my jcm 800 build and i was not going to turn it on before finding a video on voltage checks and yours was perfect. you explained everything so someone new could understand. you also explained why you had to do these check. I would recommend this video to anyone new to amp building. i cant wait to see more of your videos. thank you again
@HeadfirstAmps
@HeadfirstAmps 10 месяцев назад
Welcome aboard!
@hrsey71
@hrsey71 2 года назад
very helpful video! i had a bad (new) EL34 and it red plated. i wasnt paying attention and didnt notice until i saw smoke coming off the glowing resistor on the tube socket. thankfully the resistor did its job and didnt ruin anything
@brucetaylor1753
@brucetaylor1753 3 года назад
Great video. Looking forward to part 2.
@prook2001
@prook2001 3 года назад
Thanks Jason. This is very helpful (as always).
@VailAvenue
@VailAvenue 3 года назад
Great video. Very helpful!
@petercornell2002
@petercornell2002 3 года назад
Great video, thanks Jason.
@rnrmfguitarworks
@rnrmfguitarworks 3 года назад
Great vid! One other safety recommendation I would add: remove any watches/bracelets/rings on the hand you are using the probe with. 🤘🏻
@HeadfirstAmps
@HeadfirstAmps 3 года назад
Agree with that tip!
@beachsidetech
@beachsidetech 3 года назад
Great Video! You don't recommend using a variac to wind up mains on startup? I know some guys do that. Also, can you show how you connect the bias current meter? I don't think that was shown.
@HeadfirstAmps
@HeadfirstAmps 3 года назад
I don't own one, never have. Just flick the switch mate! I show a still picture of the probe setup in the video at 16:58
@beachsidetech
@beachsidetech 3 года назад
I can see how the meter itself is setup but you just say it’s connected to the power tubes but doesn’t show how. Thats what i was asking about.
@HeadfirstAmps
@HeadfirstAmps 3 года назад
Ah ok, gotcha. Its one of these, www.amazon.com.au/dp/B07CR5DN1V/ref=cm_sw_r_cp_awdb_imm_E9CBNWAVFNKP1YFT7FP0 You plug the probe socket in between the tube and the chassis socket
@tallkien2250
@tallkien2250 2 года назад
Probably better to use a 10ohm load resistor instead of 8. Impedance and resistance are not 1:1
@HeadfirstAmps
@HeadfirstAmps 2 года назад
They are not the same thing at all.
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