https://aliexpress.ru/item/40009658...5374.864374399.1594535057-34121377.1589576585
See 3th inductor 10uH, size 14x11x16
See 3th inductor 10uH, size 14x11x16
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Why do folks suggest replacing the coils? One of the reasons I got the FX502 was because it had air-core coils.
Given that ferrite coils can experience magnetic latency in the coil - which does not affect air-cored ones - I would have thought it better to stay with the originals, no?
Given that ferrite coils can experience magnetic latency in the coil - which does not affect air-cored ones - I would have thought it better to stay with the originals, no?
Aircoil - pro: absolutely linear, no additional THD
Aircoil - con: huge magnetic stray field, higher DC resistance
Aircoil - con: huge magnetic stray field, higher DC resistance
Aircoil - con: huge magnetic stray field
For killing the crows on the fly))))
Bucks Banny -contra - Lowest SRF (Self resonance frequency)
For killing the crows on the fly))))
Bucks Banny -contra - Lowest SRF (Self resonance frequency)
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pulse width modulation (PWM)) air coils they work, but not luchschim way
for air coils, the washout is too small to exclude mutual influence, current protection is triggered
limits the ability to use a 32-volt psu. Maximum current output and the decline in the bass
for air coils, the washout is too small to exclude mutual influence, current protection is triggered
limits the ability to use a 32-volt psu. Maximum current output and the decline in the bass
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no, this is a TPA3250. the goal is to reduce the resistance to 0.02 ohms and a higher q-factor of the filter
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Chris & Doc,
before finalizing my shopping list in mouser, please take a look at the bypass cap & output filter cap
1. By-pass cap (parallel to main power cap)
MKS2-.22/63/10 WIMA | Mouser Singapore
2. Filter cap 0.68uF, TDK, 100V DC
B32529C1684J EPCOS / TDK | Mouser Singapore
Kindly comment, if any changes needed. thanks
before finalizing my shopping list in mouser, please take a look at the bypass cap & output filter cap
1. By-pass cap (parallel to main power cap)
MKS2-.22/63/10 WIMA | Mouser Singapore
2. Filter cap 0.68uF, TDK, 100V DC
B32529C1684J EPCOS / TDK | Mouser Singapore
Kindly comment, if any changes needed. thanks
Hi
cap 1
normally one very good cap should be sufficient.(panasonic FC 1800µF-3300µF)
but i follow this: - but i didn´t measure with scope....
EEVblog #859 - Bypass Capacitor Tutorial - YouTube
cap2 is fine - TDK are good- a i learned from the members here:
the output filter cap should be 3 or 4times bigger then the supply voltage -better(and if you have space) use 10x times bigger.
e.g. PSu 24V --> 100V
chris
cap 1
normally one very good cap should be sufficient.(panasonic FC 1800µF-3300µF)
but i follow this: - but i didn´t measure with scope....
EEVblog #859 - Bypass Capacitor Tutorial - YouTube
cap2 is fine - TDK are good- a i learned from the members here:
the output filter cap should be 3 or 4times bigger then the supply voltage -better(and if you have space) use 10x times bigger.
e.g. PSu 24V --> 100V
chris
Chris & Doc,
Thanks for the inputs. placed the order in mouser.
Chris,
How tough to remove the air coil inductor in FX502s Pro? I see some kind of solvent glue poured inside of the coils.
If i desolder coils from pcb, will they come off easily? or any special measures to be taken?
thanks
Thanks for the inputs. placed the order in mouser.
Chris,
How tough to remove the air coil inductor in FX502s Pro? I see some kind of solvent glue poured inside of the coils.
If i desolder coils from pcb, will they come off easily? or any special measures to be taken?
thanks
How to remove the glue, without damaging the pcb? thanks.
I am new to this, so please help to explain!
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Hi saran
ok.
use a tool with small and sharp/hard edge - like a a small screw driver and scratch it carefully away. normally the glue around the coils is not too sticky. so after de-solder push a little bit with your fingers and its gone. on the pcb there is a isolated cover....no problem to do so.
chris
ok.
use a tool with small and sharp/hard edge - like a a small screw driver and scratch it carefully away. normally the glue around the coils is not too sticky. so after de-solder push a little bit with your fingers and its gone. on the pcb there is a isolated cover....no problem to do so.
chris
Thanks Chris for guidance.
Mouser order placed yesterday, Inductor coil order in aliexpress placed today.
Inductor may be very long to deliver. lets see.
will update here, when there are any changes to the amp.