Hiii ... my first experience to build my own amp
For everybody who build this amp NX 150 Synergy mofset
you can join with me, maybe we can help each other to
make this pcb and component to be a perfect amp
Maybe i will blindtest this amplifier too with picture in the
thread for member and i will tell the truth is this amp ok
and what it is characteristic
This all craziest hooby start when i hear we're alone from
Rita Coolidge in my friend house he just use Rotel 1072,
Marantz and KEF speaker ... How wonderful
My education was accountant and marketing i had experience
in electro before when i was in junior high. We make LED Radar and no one lamp is on
So i begin to look diyaudio forum in january 2007 i look all the solid state and digital i look from the beginning. Nice idea
Finally i contact Anthony E Holton To Make this Spyder and
this is the photo when he came with fedex
I will continue tomorrow ... Stay Tune
For everybody who build this amp NX 150 Synergy mofset
you can join with me, maybe we can help each other to
make this pcb and component to be a perfect amp
Maybe i will blindtest this amplifier too with picture in the
thread for member and i will tell the truth is this amp ok
and what it is characteristic
This all craziest hooby start when i hear we're alone from
Rita Coolidge in my friend house he just use Rotel 1072,
Marantz and KEF speaker ... How wonderful
My education was accountant and marketing i had experience
in electro before when i was in junior high. We make LED Radar and no one lamp is on
So i begin to look diyaudio forum in january 2007 i look all the solid state and digital i look from the beginning. Nice idea
Finally i contact Anthony E Holton To Make this Spyder and
this is the photo when he came with fedex
I will continue tomorrow ... Stay Tune
Attachments
PSU Caps
I buy PSU PCB from Anthony Too
but i have a little trouble now
can you help me guys, i can use
- 6.800 uf 63V / 100 V
- 10.000 uf 63V / 100 V
but the caps diameter max is 35 mm
can you help me to choice the caps for this psu
and if it is special caps
please let me know where i can buy it
If i use Blackgate it is good or just waste money here
please dont lie to me
I buy PSU PCB from Anthony Too
but i have a little trouble now
can you help me guys, i can use
- 6.800 uf 63V / 100 V
- 10.000 uf 63V / 100 V
but the caps diameter max is 35 mm
can you help me to choice the caps for this psu
and if it is special caps
please let me know where i can buy it
If i use Blackgate it is good or just waste money here
please dont lie to me
PSU Capacitor
After I googling some website i found
some seller who sell cap 6800uF 63V
10000uF 63V and 10000uF 100V.
I found some Nichicon Muse FW 6800uF
63V from the seller in Taiwan. Even i dont
much interesting with this caps but can
be a back up if i dont find better caps
caps is very cheap @ US $5 because it is
bigger size so i buy all his caps 20 pcs
Maybe the caps in the shipment now
i hope this will good for my Aussie PSU
After I googling some website i found
some seller who sell cap 6800uF 63V
10000uF 63V and 10000uF 100V.
I found some Nichicon Muse FW 6800uF
63V from the seller in Taiwan. Even i dont
much interesting with this caps but can
be a back up if i dont find better caps
caps is very cheap @ US $5 because it is
bigger size so i buy all his caps 20 pcs
Maybe the caps in the shipment now
i hope this will good for my Aussie PSU
Attachments
Re: PSU Capacitor
Regarding Big Electrolytic Capacitors for Amplifier Power Supply:
----------------------
You do not have to use BRANDED caps.
They are usually considerably more expensive.
What you pay extra for is most 90% 'the label'.
The plastic wrapping appearance.
I buy good industry standard cpacitors, from Taiwan.
Low price factory line.
Price is lower per / uF, and I do not expect them to inferior.
In fact they have data that can compare
and sometimes even be better than ELNA.
ELNA is somewhat of high quality industry MARK.
It is a good quality to compare against.
You should look for data, like:
- lifetime of cap at 85 degrees C
... there is a 'more strict norm' at 105 degreees C ( but 85 is enough for most apps )
.... some are called 'longlife'
but best is to make a compare of this in the 'worst case data'
which should be specified for any Serious Capacitors.
..................................................................................
It is a bit like with your JEANS:
jeans can have label: Levi's, Wrangler etc.
But jeans costing only 50% of those can do as good for you!
It is a bit like with your SHOES:
shoes can have label: Nike, Adidas etc.
But shoes costing only 50% of those can do as good for you!
... maybe I am barking up the wrong tree here:
all reading this post, are wearing Levi's jeans and walking Nike shoes
besides having their pockets full of hard cash
... they just don't know how they can spend all that money
... and will not use anything but leading fashionably latest caps
... you know those that can have dark color in name ( read my lips: 'black' )
.. but in reality can not show you any significant better data
...if you even can find datasheet online
Regards
lineup
Lineup Audio Lab ( see my homepage )
jeffry_widjaja said:
Regarding Big Electrolytic Capacitors for Amplifier Power Supply:
----------------------
You do not have to use BRANDED caps.
They are usually considerably more expensive.
What you pay extra for is most 90% 'the label'.
The plastic wrapping appearance.
I buy good industry standard cpacitors, from Taiwan.
Low price factory line.
Price is lower per / uF, and I do not expect them to inferior.
In fact they have data that can compare
and sometimes even be better than ELNA.
ELNA is somewhat of high quality industry MARK.
It is a good quality to compare against.
You should look for data, like:
- lifetime of cap at 85 degrees C
... there is a 'more strict norm' at 105 degreees C ( but 85 is enough for most apps )
.... some are called 'longlife'
but best is to make a compare of this in the 'worst case data'
which should be specified for any Serious Capacitors.
..................................................................................
It is a bit like with your JEANS:
jeans can have label: Levi's, Wrangler etc.
But jeans costing only 50% of those can do as good for you!
It is a bit like with your SHOES:
shoes can have label: Nike, Adidas etc.
But shoes costing only 50% of those can do as good for you!
... maybe I am barking up the wrong tree here:
all reading this post, are wearing Levi's jeans and walking Nike shoes
besides having their pockets full of hard cash
... they just don't know how they can spend all that money
... and will not use anything but leading fashionably latest caps
... you know those that can have dark color in name ( read my lips: 'black' )
.. but in
reality can not show you any significant better data...if you even can find datasheet online
Regards
lineup
Lineup Audio Lab ( see my homepage )
I just kidding to wear the "black" in my psu
board the first reason is their diameter was
40 mm ( for 10.000 uF 63 V )
In bottom of my heart, i believe
BG has top formula and better performance
The PSU board can receive caps diameter
only 35 mm
I talking to anthony too and he give another
idea but for that item i been search for a long
time ... never found it
This is Ni FW 6800uf 63v for my back up
board the first reason is their diameter was
40 mm ( for 10.000 uF 63 V )
In bottom of my heart, i believe
BG has top formula and better performance
The PSU board can receive caps diameter
only 35 mm
I talking to anthony too and he give another
idea but for that item i been search for a long
time ... never found it
This is Ni FW 6800uf 63v for my back up
Attachments
FW 6800uF 63V
Hii Hartono, where are you ?
this is my HP number 08158772900
go to sms man
After i measure my caps and looks the nichicon diagram
http://www.nichicon-us.com/english/seihin/alm_mini/daia_f.htm
The size is right 25 mm x 50 mm
( I buy cause when i look AE Holton Psu space is 30mm )
This is very cheap wanna buy it ?
Hii Hartono, where are you ?
this is my HP number 08158772900
go to sms man
After i measure my caps and looks the nichicon diagram
http://www.nichicon-us.com/english/seihin/alm_mini/daia_f.htm
The size is right 25 mm x 50 mm
( I buy cause when i look AE Holton Psu space is 30mm )
This is very cheap wanna buy it ?
Here is what I did with my NX150 assemblies: http://3dotaudio.com/ampics.html
The completed stereo amp is now at home and connected to a pair of Maggies ( http://www.magnepan.com/_mmg.php ).
The amp runs very cool, each heat sink is ~~ 90mm x 125mm x 20mm (fins) aluminum, drilled to accept brass screws and "thumb" nuts, all bolted to the bottom of the Crown chassis ... with no fan.
Each "ready made" PSU filter board is from aussieamplifiers.com as well and each board contains four (4) black Nippon Chem-Con 10,000 uF (100 Volt) capacitors which measure 35mm x 54mm tall. (I have only one (1) PSU board installed in the Crown chassis for both amp modules (unlike the pictures) = 40,000 uF total for the two amp modules.)
The Crown chassis & torrid transformer pictured is 400 VA, 48 VAC with center tap producing +67 / 0 / -67 VDC ... so the 100 volt capacitor rating is necessary for this setup. (Note that +/- 67 VDC is slightly higher than aussieamplifiers.com 's suggested maximum for the NX150, but it works just fine and the transformer is also quite cool temperature.)
Internally: signal interconnects are twisted pair #18 AWG stranded silver to gold plated RCA inputs and fine stranded #12 AWG speaker output cables to the original Crown speaker connector board (with rolloff filters ~ 100k Htz.). I added gold plated spade connectors to the amp modules, but this was not really needed.
Shortly I will be adding a third NX150 amp module to the chassis (with associated summing circuit and low pass filter) for a sub woofer, all driven from the same torrid transformer and PSU board.
... It all works very well, very low heat, no smoke, no stink ... The NX150 is a flat, full range voltage follower / current dump MOSFET amplifier with no suprises. IMOP the sonic results are very nice indeed with plenty of gutsy bass and bright highs ...
(Input is from a Bottlehead.com tube pre-amp )
(I also have a pair of Anthony's NX500s ready for in another amp box = PSU to be determined ... )
The completed stereo amp is now at home and connected to a pair of Maggies ( http://www.magnepan.com/_mmg.php ).
The amp runs very cool, each heat sink is ~~ 90mm x 125mm x 20mm (fins) aluminum, drilled to accept brass screws and "thumb" nuts, all bolted to the bottom of the Crown chassis ... with no fan.
Each "ready made" PSU filter board is from aussieamplifiers.com as well and each board contains four (4) black Nippon Chem-Con 10,000 uF (100 Volt) capacitors which measure 35mm x 54mm tall. (I have only one (1) PSU board installed in the Crown chassis for both amp modules (unlike the pictures) = 40,000 uF total for the two amp modules.)
The Crown chassis & torrid transformer pictured is 400 VA, 48 VAC with center tap producing +67 / 0 / -67 VDC ... so the 100 volt capacitor rating is necessary for this setup. (Note that +/- 67 VDC is slightly higher than aussieamplifiers.com 's suggested maximum for the NX150, but it works just fine and the transformer is also quite cool temperature.)
Internally: signal interconnects are twisted pair #18 AWG stranded silver to gold plated RCA inputs and fine stranded #12 AWG speaker output cables to the original Crown speaker connector board (with rolloff filters ~ 100k Htz.). I added gold plated spade connectors to the amp modules, but this was not really needed.
Shortly I will be adding a third NX150 amp module to the chassis (with associated summing circuit and low pass filter) for a sub woofer, all driven from the same torrid transformer and PSU board.
... It all works very well, very low heat, no smoke, no stink ... The NX150 is a flat, full range voltage follower / current dump MOSFET amplifier with no suprises. IMOP the sonic results are very nice indeed with plenty of gutsy bass and bright highs ...
(Input is from a Bottlehead.com tube pre-amp
)(I also have a pair of Anthony's NX500s ready for in another amp box = PSU to be determined ...
)
Jeffry_widjaja: The picture you called "giant PSU [wow fantastic]" is actually the old Crown amplifier board that I cast aside (not a PSU board) ... It was working when I gutted the Crown chassis, but it is not nearly comparable to the quality of the NX150s. (I still have the old board, but plan on removing the various parts that may be of some value in other projects.) ...
MODS
Is there anybody mods these NX 150 ?
maybe you can share your opinion with
all friend in this diyaudio forum
You can look mods of destroyer x too
http://www.diyaudio.com/forums/showthread.php?s=&threadid=82780&perpage=10&pagenumber=3
Is there anybody mods these NX 150 ?
maybe you can share your opinion with
all friend in this diyaudio forum
You can look mods of destroyer x too
http://www.diyaudio.com/forums/showthread.php?s=&threadid=82780&perpage=10&pagenumber=3
Attachments
The latest updates to the NX150 design has fixed or improved any flaws that may have been present = newer type/model MOSFETs, added larger input DC blocking cap, spade connectors for power & output, "golden ear" quality power rail filter caps, etc. ( http://aussieamplifiers.com/NX150_Finished.2A.JPG ... http://aussieamplifiers.com/nx150.htm ).
I would not modify anything on this amp, the specs are already better than anything in its class or price range ... IMHO better than anything many times the price, whether NX150 or NX150 Synergy ... (I have both.) I would also recommend getting the assembled modules as they are only about 20% more in costs than the kits and the assembled modules are fully tested and a very nice piece of work.
Re: DestroyerX's thread above ... noting that his pictures indicate the quality of the boards and components used for the NX series ...
I would not modify anything on this amp, the specs are already better than anything in its class or price range ... IMHO better than anything many times the price, whether NX150 or NX150 Synergy ... (I have both.) I would also recommend getting the assembled modules as they are only about 20% more in costs than the kits and the assembled modules are fully tested and a very nice piece of work.
Re: DestroyerX's thread above ... noting that his pictures indicate the quality of the boards and components used for the NX series ...
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