Hi guys
I have another question
In the preamplifier.
i have a cathode JANTZEN AUDIO STANDARD Z-CAP capacitor 22mf 400v with a resistor 680 ohm in parallel that goes from cathode to ground.
Also i have a b+ film capacitor JANTZEN AUDIO STANDARD Z-CAP 400V 47μF which is after a 5w resistor then goes to plate. I think this is the decoupling cap if i am not mistaken.
I have a couple or more JANTZEN AUDIO SUPERIOR Z-CAP Capacitor 1200V 0.22µF film caps
Which cap is more important to bypass with the 0.22mf the cathode cap or the b+ cap?
Also the coupling output film caps are JANTZEN AUDIO SILVER Z-CAP 2.2mf 1200v each channel. I have the same brand model 2 caps 0.1mf. is it good to bypass the 2.2mf too?
A lot of questions i know but you guys here are truly genius in the tube electronics than i am.
Thanks in advance guys.
I have another question
In the preamplifier.
i have a cathode JANTZEN AUDIO STANDARD Z-CAP capacitor 22mf 400v with a resistor 680 ohm in parallel that goes from cathode to ground.
Also i have a b+ film capacitor JANTZEN AUDIO STANDARD Z-CAP 400V 47μF which is after a 5w resistor then goes to plate. I think this is the decoupling cap if i am not mistaken.
I have a couple or more JANTZEN AUDIO SUPERIOR Z-CAP Capacitor 1200V 0.22µF film caps
Which cap is more important to bypass with the 0.22mf the cathode cap or the b+ cap?
Also the coupling output film caps are JANTZEN AUDIO SILVER Z-CAP 2.2mf 1200v each channel. I have the same brand model 2 caps 0.1mf. is it good to bypass the 2.2mf too?
A lot of questions i know but you guys here are truly genius in the tube electronics than i am.
Thanks in advance guys.
Last edited:
Even the suggestion is wrong.
Do you want to fix a malfunction? Is any capacitor not working as it should (for example its impedance rising at high frequency)?
In this case very good quality (relatively low value, low -stable at HF too- ESR) bypass capacitor may be reasonable.
Without knowing existing capacitors properties (and expected values) the "bypass" incomprehensible.
Do you want to fix a malfunction? Is any capacitor not working as it should (for example its impedance rising at high frequency)?
In this case very good quality (relatively low value, low -stable at HF too- ESR) bypass capacitor may be reasonable.
Without knowing existing capacitors properties (and expected values) the "bypass" incomprehensible.
Euro21 thanks mate i get your pont.
I thought that bypass them i will get more speed and faster transients as some guru says. The pream is working as it should with no problems a all.
I thought that bypass them i will get more speed and faster transients as some guru says. The pream is working as it should with no problems a all.
Transient behaviour depends least of all on the capacitors, but rather on the design.
BTW bypassing the same structure (but other value) capacitor does not help with possible weakness.
Sometimes bypassing a "boring", "flat" PP coupling capacitor with silver or teflon -small- capacitor even helps ... but that only becomes clear in the practice.
BTW bypassing the same structure (but other value) capacitor does not help with possible weakness.
Sometimes bypassing a "boring", "flat" PP coupling capacitor with silver or teflon -small- capacitor even helps ... but that only becomes clear in the practice.
Thanks euro21 i have readed some long ago.
I thought that all the large mf film caps are helping by bypass them with smaller mf caps which they are faster especially in the hi frequencies .
I understand the meaning of your post and i agree you are correct. But all the audiophiles to be precise audiofools that we are, seeking the best possible performance from our equipment especially if they are tubes and if you have the mods in you mind like me you believe the unbelievable.
Thanks for you time man.
I thought that all the large mf film caps are helping by bypass them with smaller mf caps which they are faster especially in the hi frequencies .
I understand the meaning of your post and i agree you are correct. But all the audiophiles to be precise audiofools that we are, seeking the best possible performance from our equipment especially if they are tubes and if you have the mods in you mind like me you believe the unbelievable.
Thanks for you time man.