6AX5 or 6BY5, but augmented with two silicon diodes for a bridge
Could you tell me why ? 🙂
Hi!
I prefer the bridge rectifier for its Symmetry. A center tapped secondary can be a bit asymmetric between the halves. But the most important reason is the disturbance the diodes cause in the secondary voltage when switching. This is only caused with choke input filters. This is visible when you put a scope probe across the secondary and compare bridge with FW CT.
So with choke input filters I prefer the bridge arrangement.
The version with a tube rectifier mixed with silicon diodes is for lower budget PSUs. If possible I use all tube bridges
Best regards
Thomas
I prefer the bridge rectifier for its Symmetry. A center tapped secondary can be a bit asymmetric between the halves. But the most important reason is the disturbance the diodes cause in the secondary voltage when switching. This is only caused with choke input filters. This is visible when you put a scope probe across the secondary and compare bridge with FW CT.
So with choke input filters I prefer the bridge arrangement.
The version with a tube rectifier mixed with silicon diodes is for lower budget PSUs. If possible I use all tube bridges
Best regards
Thomas
The version with a tube rectifier mixed with silicon diodes is for lower budget PSUs. If possible I use all tube bridges
Agree with you about unbalance of 2 haves of secondaries.
Do you compare sound quality between Hybrid rectifier (silicon diode - tube) and full tube bridge ?
Hi!
Not in the same amp. I generally use all tube rectifiers when I have the space available, typically in external PSUs
Best regards
Thomas
Do you compare sound quality between Hybrid rectifier (silicon diode - tube) and full tube bridge ?
Not in the same amp. I generally use all tube rectifiers when I have the space available, typically in external PSUs
Best regards
Thomas
They uses four 6AX4... looks like this:
VinylSavor: Single Ended Amplifier Concept, Part 5
VinylSavor: Tube of the Month: The 6AX4
Wow, I use two 6X5 . Based on the Matsunami design but I replace signal capacitor with IT 5K:5K transformer .
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This is my latest version. Sound make me no complaint, very sweet, thick and dynamic so far. Metal box is used to shield loading choke. So, noise is extremely low, 0.4-0.5mVac.
Replace big plate choke to bigger one, so tube works more current.
Regards,
Replace big plate choke to bigger one, so tube works more current.
Regards,
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