I AM D v200, Fx Audio d802, optimisation and TPA3116

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Jump to Latest
M

mikey_audiogeek

Member
Joined 2004
globulegl said:
comparaison.png


thd.png


dr.png


ns.png


imd.png
Click to expand...

Nice work globulegl! I think i shall stay with V200, I would like to compare my V200 with choke-regulated power supply against your D310 ;-)

Cheers,
Mike
 
L

linuxfan

Member
Joined 2007
Yes, it appears that the V200 is best bang-for-buck, and that's what I have just ordered. Thanks to globulegl for the comparisons, and earlier comments.

mikey_audiogeek said:
I would like to compare my V200 with choke-regulated power supply against your D310
Click to expand...
I'm intrigued by this power supply (on page 11), but since my V200 will just be for TV listening it may not be worth the expense and effort for me.
Mike, excuse my ignorance, but would it be correct to say your design is a well-filtered unregulated power supply?
 
M

mikey_audiogeek

Member
Joined 2004
linuxfan said:
Yes, it appears that the V200 is best bang-for-buck, and that's what I have just ordered. Thanks to globulegl for the comparisons, and earlier comments.


I'm intrigued by this power supply (on page 11), but since my V200 will just be for TV listening it may not be worth the expense and effort for me.
Mike, excuse my ignorance, but would it be correct to say your design is a well-filtered unregulated power supply?
Click to expand...

Yep guess that's more accurate. One could say it is passively regulated? :D
 
C

ChuckT

Member
Joined 2002
Solve said:
From the bottom to the highs!
It's just more dynamic in all!
No, now im unfair, TPA3118 have good dynamic but lacks in the top and bottom.
Click to expand...
Its very hard to compare with tpa311x since it is just an amp but d802 is a whole system. First what source are you using for tpa311x? Preamp? And the implementation of tpa3118 can have an impact? What coupling cap did u use? power supplies? Various mods?
BTW, I am using tpa3118 with an input transformer and it is on another level.
The beauty of d802 is its simplicity and still sounding good. Very good in fact. That is the reason I am trying to improve it to see what level I can achieve. At this point, I would not say D802 is better than the tpa3118, but it is certainly on the same level of sound quality.
I am waiting for some parts to come in so I can provide a separate supplies to the digital section. I might even change the clock as well, since I know sometimes it can make quite an impact.
 
Solve

Solve

Member
Joined 2006
ChuckT said:
Its very hard to compare with tpa311x since it is just an amp but d802 is a whole system. First what source are you using for tpa311x? Preamp? And the implementation of tpa3118 can have an impact? What coupling cap did u use? power supplies? Various mods?
BTW, I am using tpa3118 with an input transformer and it is on another level.
The beauty of d802 is its simplicity and still sounding good. Very good in fact. That is the reason I am trying to improve it to see what level I can achieve. At this point, I would not say D802 is better than the tpa3118, but it is certainly on the same level of sound quality.
I am waiting for some parts to come in so I can provide a separate supplies to the digital section. I might even change the clock as well, since I know sometimes it can make quite an impact.
Click to expand...

Unmodifyed D802 is better.
TPA3118 is very harsh in the highs and need mods.
 
jean-paul

jean-paul

Disabled Account
Joined 2002
Told you so ! ;)

Despite wanting to I haven't found the opportunity to (severely) mod my D802. Does anyone know if those 22 µF Tantalum caps are genuine (or even just good) ? I have my stash of AVX TPS series which are very good and they might just be what the doctor ordered.

And how does the PCB material behave ? Typical "heat once - tracks loose" kind of thing I guess ?
 
Last edited:
C

ChuckT

Member
Joined 2002
jean-paul said:
Told you so ! ;)

Despite wanting to I haven't found the opportunity to (severely) mod my D802. Does anyone know if those 22 µF Tantalum caps are genuine (or even just good) ? I have my stash of AVX TPS series which are very good and they might just be what the doctor ordered.

And how does the PCB material behave ? Typical "heat once - tracks loose" kind of thing I guess ?
Click to expand...

The D802 PCB is fairly good, at least up to now after changing several caps and pulling out a lm2596 all the pads are still intact. The ground plane is fairly hefty too so a good iron is required to solder the ground pad.
I don't know about the Tantalum quality, but for that price, I can't imagine it will be too good. It's also one of the caps that I will replace. I have Panasonic Poscap in mind.
 
Solve

Solve

Member
Joined 2006
ChuckT said:
The D802 PCB is fairly good, at least up to now after changing several caps and pulling out a lm2596 all the pads are still intact. The ground plane is fairly hefty too so a good iron is required to solder the ground pad.
I don't know about the Tantalum quality, but for that price, I can't imagine it will be too good. It's also one of the caps that I will replace. I have Panasonic Poscap in mind.
Click to expand...
Im to happy right now to start modding but if you make any easy adjustments
I follow you.
But it's not easy to see what you have done so far for me who needs "For Dummys" walk through.
:D
 
jean-paul

jean-paul

Disabled Account
Joined 2002
ChuckT said:
The D802 PCB is fairly good, at least up to now after changing several caps and pulling out a lm2596 all the pads are still intact. The ground plane is fairly hefty too so a good iron is required to solder the ground pad.
I don't know about the Tantalum quality, but for that price, I can't imagine it will be too good. It's also one of the caps that I will replace. I have Panasonic Poscap in mind.
Click to expand...

Thanks. Could you please mention the part numbers as described on the PCB ? And please describe the part you used as an upgrade and the effect it had. Pictures would be nice too.

I stock Poscap but have some thoughts those being extremely ultra low ESR.

* BTW: the tantalum caps on your D802 PCB seem like AVX types...if they are original replacing them seems fruitless. They have the AVX logo and date code system.
 
Last edited:
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Top Bottom