Output Capacitor Upgrading Questions
- Thread starter jrihs
- Start date
I would suggest clipping or tacking them in one at a time as the most sensible approach.
If you decide to do the switch I'll suggest that you want the switch between the output end of the cap and the headphone jack, and that the out of circuit cap outputs get grounded when switched out of the circuit, ideally thru something like a 2.7K ohm resistor similar to the one on the headphone output. Make sure all of the cap inputs are attached to the plate voltage so they stay charged or you will get some nasty popping as they charge up when you throw the switch with the amp running, and also subject that poor switch to some gnarly inrush current. Also, no promises on what might happen to your headphones if something goes wrong.
In other words you want the caps to think they are in the live circuit even if they are not.
If you decide to do the switch I'll suggest that you want the switch between the output end of the cap and the headphone jack, and that the out of circuit cap outputs get grounded when switched out of the circuit, ideally thru something like a 2.7K ohm resistor similar to the one on the headphone output. Make sure all of the cap inputs are attached to the plate voltage so they stay charged or you will get some nasty popping as they charge up when you throw the switch with the amp running, and also subject that poor switch to some gnarly inrush current. Also, no promises on what might happen to your headphones if something goes wrong.
In other words you want the caps to think they are in the live circuit even if they are not.
Faster, yes. Just want to be sure no headphones get damaged by a transient in the effort to get that quick change from one cap to the next. It's nice to A/B on the fly, but I happen to think it's also a really good exercise to listen with some time gap between the two samples being compared. I think it helps one to hone their listening skills quite a bit.
Small follow up on the Russian MBGO's. Now about 80 hours in.
For the money (35€ shipped) they are really great! Big improvement over the stock electrolytics. Add a lot of depth to the music.
I went for 3x 30uf on each channel. Could have put an extra for each channel for lower impedance headphones but wanted the extra room for bypass caps and the PS cap upgrades.
For the money (35€ shipped) they are really great! Big improvement over the stock electrolytics. Add a lot of depth to the music.
I went for 3x 30uf on each channel. Could have put an extra for each channel for lower impedance headphones but wanted the extra room for bypass caps and the PS cap upgrades.
Ordered a bunch of bypass caps. From the teflons i ordered ft-3 and k72. Also silver mica's and k40 k75pio's and kbg. Won't be at home for a few weeks so can't Connect them.
Edit: Thanks JamieMcC! The FT-3 make a great upgrade in addition to the standard MBGO-2's.
I can't hear a difference with the K75-10's as bypass for the last PSU cap.
I'll remove that one in a few weeks and see if i hear a difference then.
Edit: Thanks JamieMcC! The FT-3 make a great upgrade in addition to the standard MBGO-2's.
I can't hear a difference with the K75-10's as bypass for the last PSU cap.
I'll remove that one in a few weeks and see if i hear a difference then.
JamieMcC
New member
Nice job I'm pleased the pio caps are working for you ;D They were a combination that I really liked after trying a good few options I think for the money they represent excellent value.
What's going on with your attenuators knob? I suspect you can adjust its height so it will sit flush with the top plate by winding up the nut below the top plate up a few turns.
What's going on with your attenuators knob? I suspect you can adjust its height so it will sit flush with the top plate by winding up the nut below the top plate up a few turns.
TurbOSquiD77
New member
Double bump ;D
Try to find the lowest possible voltage 100uF film cap you can use. You're paying a lot of money for that 350V rating, and they will likely be quite a bit larger than they look.
TurbOSquiD77
New member
mcandmar said:
Could you elaborate?
Say if I wanted to bypass a set of 100uF Evo Oils with a 1uF cap, would the 1uF cap's attributes not show?
