AussieAmplifiers NX150 Spyder

[Pocoyo]

The Others Opinion

II
Others opinion on DIY Audio
Thread : Full throttle construction of amplifiers (NX 150)
http://www.diyaudio.com/forums/showthread.php?s=&threadid=82780&perpage=25&pagenumber=1

Quite a nice PCB layout

The Holton NX150 power amplifier, a kit for diy hobbie is
a hudge powered unit, able to surprise with great dynamics
and seeming it has twice the published power.

In my personal point of view, it did not show any special colouration in
almost all the audio band�.something was better in the deep bass spectrum,
and was considered not exactly perfect�but sounding very nice, having some
spatial dimension�. Alike some small delay echo�.but Bernardo, the one
observed and shown that for us, accepted that characteristic as something good�much more effect than defect he said�happened with tuned duct speakers�the old bass reflex.

He was alone to prove us that �.. finally he convinced us�but for me this is
better than something perfect�as I love that kind of bass�.made for me as
something customized.

Beautifull bass�remembering me a thunder�and also the enormous old
Altec Lansing speakers that used to play that warm and interesting bass in the old days�.my home was not happy, as many objects start to move over the table, it is a room shacking amplifier hat may produce instantaneous power that can reach twice the nominal�.my wife asked to reduce the volume, because was not fair to me to test a Cinema amplifier inside our home�this is what she said�. 50 watts average was the
power used.

In my whole life, with more than 3K amplifier assembled and tested, i could find
5 units considered extremely respectable�and this one if one of them, that arrived here to stay.

I made a small version and called friends to listen to it, and we
normally avoid the stereo listening, as sound stage can fool us and
produce, as a result, much better evaluation than the real thing.

Sound stage is something that drive almost all of us, and this amplifier
reproduces a wonderfull special positioning of instruments

I could perceive some bass deepness�related its dimension�what resulted
in something I appreciate very much�longer and tigh bass�.with a punch and
a little bit longer than natural delay to stop�a nice decay in my point of view.

My friends were surprised because it is nice in treble reproduction, not presenting
the very common harshness we find in many amplifiers, and the midranges was clear
not producing enormous differences related male and female voices..the amplifier
was considered very flat during listening, and speakers were changed �we have used
acoustic suspension, duct tuned units and Senheiser old headphones�those old and good
units that use microphone cartridges as drivers.

...

I will produce images from this amplifier, an they will have the quality it deserves, for a while stay with Mr Anthony Holton image.

Regards to all friends, and thanks Holton that sold me two spare boards to future construction of a full power unit� also I could have a small discount price on those
boards.

Carlos

My Father in law analyze is very complex, complete or too long
Hiii Carlos !

 

[Pocoyo]

Recomended from someone

III
Opinion about NX vs DX
http://www.diyaudio.com/forums/showthread.php?s=&threadid=82780&perpage=25&pagenumber=10

Dear Destroyer X

Hii nice to know you

I saw your posting in NX 150 and DX amplifier too
and you said the both product is the best

It is not possible to me to build those amp [ i build 400 W - ab ]
but maybe i can hear from you which the best between NX 150 with DX 100 and what is plus and minus factor between
those amps

IMPORTANT !!! If you say NX 150 Better than yours, i will call u
SHIERLY PLEASE TALK WITH HONEST HEART & EARS

best regards
jeffry widjaja

Alike every competition, human competition...for instance...box figth.... not one is the total and complete winner..as both had finished with their noses smashed.

My amplifier is simple.... cheap......the 150 is cheap...but not so cheap...also not so simple.

It is apples compared with bananas....for sure they are fruits..but so different they are..... Bananas can make a small kid grow very strong...and Apple can make him grow very healthy...and not so strong phisically.

Yes.... the Anthony Holton is a better one...but not too much.

He could not smash my toy amplifier...hehe

You are beeing bad with me..forcing me to say those things...you...you...you...bad boy.

regards,

Carlos

Can you believe ? How Destroyer X Feel that time ?
Im Feel very sorry to him until ... now

Oh yes if that time he said the other one more better
so this tittle of thread will be wrote like this :
DX 100, advance as Dumbo The flying Elephant

 

[Pocoyo]

Thanks for support

Hi Lineup

It is nice to see u again
(Same as PD, always use that mark )

And maybe this is the brave one opinion
http://www.audiocircle.com/circles/index.php?topic=38970.20

In addition to the DACs mentioned, please also consider:

Kevin Carter's RAKK dac II (same chip as CIA VDA2 but radically different approach and analog output stage)

Peter Daniel's/Audiosector NOS dac

Hagerman USB Chime

Also...Aspen/AKSA amplifiers, Greg Ball's SKA designs and Aussie NX150 amplifiers. I'm guessing these are state of the art solid state designs that will compete with the likes of Classe Audio, Halcro, Boulder, Rowland, etc...but much, much, much cheaper.

Anand.

For someone knows for sure about the three amplifiers
http://www.audioenz.co.nz/forums/archive/index.php/t-4146.html

For those who not too sure about AKSA. A very recent reply from those who build it.
http://www.diyaudio.com/forums/showthread.php?s=&threadid=102746&pagenumber=1
FYI, rabbitz have build AKSA, Aussie NX150 and SKA amp. destroyer X have constructed more than 4,000 amplifiers.

What i have give here was how to make a chassis
with US$ 20 for material and US$ 100 for work cost

Oh yes before i forgot, Theres another casing company
I buy this for Aleph P 1.7 Damian Antoniak/Pre Amplifiers
You can remove the name if they push you to hard
http://www.vt4c.com/shop/program/main.php?cat_id=1&group_id=2&hit_cat=

 

[Pocoyo]

And several opinion in this thread itself

Anthony makes some really nice kit's i possibly might buy a pair of his amps to test out. They look really clean and nice layout. his N-Channel amplifier was really nice.

Excelent!

Jeff,

NX150 Synergi is a very nice amps... i like it a lots

Cheers

" ... VERY BEAUTIFUL ..."

Yes it is.

Hallo Jeffry

Yes, what I heard is a kind of low frequency out-of-phase , but totally normal (in phase) mid and hi.
It was confusing me since your speaker is fullrange.

Glad that you resolve the problem.

Nice Power Amp, Bravo Anthony !!

Cheers
Atok

Thats All

 

[lineup]

http://www.vt4c.com/shop/program/main.php
Hongkong, I think.

Very good shop!!
Chassis for amplifiers and more .. and more ... and more.
In my country of Sweden we have not such good shop.
But have we some, for chassis etc.

Regards Lineup audio amplifier diy Forum

Here is a little what we can find in Hongkong:

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

 

[Pocoyo]

Ebony & Ivory

I dont think so what the ebony for

After 5 days full of works another DIY
So we try another preamp

to make sure something missing in
our system

-----

Will be report to "Nelson Pass" on
DIY Progress Report in Pass Lab after
change some parts they used to be

 

[Pocoyo]

The New Age

sorry wrong edit

 

[Pocoyo]

Damian Antoniak Group Buys

Build this preamp with parts what we found
Cant wait for Parts arrive

This boards from Pass Lab Design
I buy from Damian Antoniak Group Buys

This pre amp works excellent

 

[Pocoyo]

The very best of capacitor

This is the most trouble
capacitor for heavy equipment

but this preamp can drive the amplifier
best for sound quality and everything

E X C E L L E N T

 

[The Saint]

Hi Everyone

I just want to make a statement regarding the Class-D Design Ltd amplifiers the have appeared in the Vendor Bazzar.

These amplifier were designed by me and I was contracted by Class D design to design these amplifiers.

However I no longer have any assoication with them in anyway.
While their mini CD-NX200 and CD-NX400 does look almost the same as my NXV200 they are not the same amplifier and actually use very different transistors and the circuit board design and their circuitry is no where near as good as my latest designs.

Also the claims made by Class-d Design about the power output and efficiency of their amplifiers are simply false.
They as simple Class AB designs using modified single and dual die lateral mosfets from Semefab, nothing more...
Too claim 400 watts into 2 ohms from a single pair of dual die laterals is not possible...

Their other amplifier power output claims are also just as false.
and the efficency of their amplifiers are also not true.

 

[lineup]

hello.

nice preamp, Pocoyo
and very nice capacitors ( 2200uF 100 V)

this image:
http://www.diyaudio.com/forums/attachment.php?s=&postid=1589856&stamp=1219222623

 

[lineup]

I just want to make a statement regarding the Class-D Design Ltd amplifiers the have appeared in the Vendor Bazzar.
------
These amplifier were designed by me and I was contracted by Class D design to design these amplifiers.
------
Their other amplifier power output claims are also just as false.
and the efficency of their amplifiers are also not true.

In short, take my word for it,
as Anthony Holton would know the facts & I trust him:

get you Holton Amplifiers directly from
http://www.aussieamplifiers.com/
... and you will have no problems + good & fair service

Lineup - good audio advices

Aussie Amplifiers and Holton Precision Audio are a branch of Australian Audio Innovations.

We started designing amplifiers for the DIY audio community as far back as 1993.

Our first amplifier released was a 350 watt Toshiba MOSFET amplifier module.

This was published in Australia's Silicon Chip magazine in June 1994. The design proved to be very popular and sold over 1200 kits worldwide.

Since that time Aussie Amplifiers has grown into a business serving the commercial audio world and DIY community with very high quality, high performance amplifier modules.

Our focus continues to be on excellence in sound quality along with excellence in audio engineering and customer service.

All of our Amplifiers and Accessories are hand assembled and to order. We only use the best components and the highest grade printed circuit boards and electrolitic capacitors, such as FR4 grade PCBs with heavy duty 3 ounce copper and Gold emersion tracks and pads. We use only the best Elna Cerafine and SILMIC capacitors and High grade metalfilm and SMD components and we have put in the hard yards to ensure you get the very best performance Objectively as well as Subjectively.

To add to this our aim is to design and build the best audio amplifier's in the world.

Anthony E Holton

 

[Pocoyo]

Hummm

hello.

nice preamp, Pocoyo
and very nice capacitors ( 2200uF 100 V)

this image:
http://www.diyaudio.com/forums/attachment.php?s=&postid=1589856&stamp=1219222623

Yes Lineup it is very nice

Sometimes if we make a little service
Their moving a little too & Hummmmm is realised

Those Caps are for Heavy Equipment
But the seller say the sound very audiophile
and it is cheapest too US$ 1 each we have 30pcs

KEEP THE FAITH NEWBIE GRRR

When i start this project i didnt hope that NX
cant have more sound quality etc like now
I funded this NX with my budget to buy Creek Amp
cause creek va cant handle TOTEM needs anymore

I never hope more, i just want to have my own amp
But when it is go more so what have i say anymore

Oh yes thank you about your caps sugestion
if not i will got PUFFFFF Caps OMIGOD

 

[lineup]

What is weather in Indonesia today, Pocoyo?

Here we have Late Summer / Autumn and not very warm.
But today a bit of SUN.
soon comes Winter (October) with SNOW here in my Sweden.
Lineup

 

[Pocoyo]

Rainy Season

WOW what nice weather !
Looks the ice in there, so cute

Jakarta is gonna rainy season. now is raining
Few days before iwas very hot in here near 34C

And the audio system sound going better
maybe add some water in the soil
and in several days i hear love song from
60's to 80's looking for magic that ive never heard

Oh yes one think i shock when i build this amp
i looking toroid at Glodok, a big electronic market
in Jakarta, The sales girl give me a "Vespa tire"
for 2 x 45 vdc, 500va hahaha very very big toroids
made in China, i think it not funny to build 2 chassis
for this amp, so i buy from RS Singapore then

 

[lineup]

Re: Rainy Season

WOW what nice weather !
Looks the ice in there, so cute

Jakarta is gonna rainy season. now is raining
Few days before iwas very hot in here near 34C

And the audio system sound going better
maybe add some water in the soil
and in several days i hear love song from
60's to 80's looking for magic that ive never heard

In Japan, India and China they have snow & ice.
In high mountains.
You have high mountains with snow in INA?

Love song from 60's to 80's .. magic you never heard Great!
You have good sound system & good AUSSIE amplifier.

What speakers you have?
I sure you tell in some post .. but I remember not.

Lineup
Sure Pocoyo will join today
Lineup Audio sound forum for indonesian

hey hey sweden

 

[Class-D Design]

Hi Everyone

I just want to make a statement regarding the Class-D Design Ltd amplifiers the have appeared in the Vendor Bazzar.

These amplifier were designed by me and I was contracted by Class D design to design these amplifiers.

However I no longer have any assoication with them in anyway.
While their mini CD-NX200 and CD-NX400 does look almost the same as my NXV200 they are not the same amplifier and actually use very different transistors and the circuit board design and their circuitry is no where near as good as my latest designs.

Also the claims made by Class-d Design about the power output and efficiency of their amplifiers are simply false.
They as simple Class AB designs using modified single and dual die lateral mosfets from Semefab, nothing more...
Too claim 400 watts into 2 ohms from a single pair of dual die laterals is not possible...

Their other amplifier power output claims are also just as false.
and the efficency of their amplifiers are also not true.

So nice to hear from you again Anthony pity its the usual waffle

Suggest you sit down, firstly get your facts correct ,secondly understand basic maths.

Your new design so called has had to be changed from the NX180 simply because you can no longer get a supply of double die lateral mosfets.It also appears you will have to discard all your other designs which incidently have now been properly engineered to eliminate basic flaws in your circuits.

your new design is no way an improvement as you well know but believe it if it makes you feel better.

What a shame!! what a waste

 

[FastEddy]

Soppelsa and The_Saint:

You guys should find a way to continue this discussion in some other venue.

I have been doing electronics and such for 30 years and I have never seen a public discussion between engineering professionals about pros and cons of various manufacturers designs and produce do any good for either company or engineer.

I am familiar with both designs you have mentioned here and have used some of them. They are already superior enough to not warrant disparaging words, which would be counter productive to you both.

Keep the faith: Power to the MOSFETs!

Ed

 

[lineup]

Soppelsa and The_Saint:
You guys should find a way to continue this discussion in some other venue.

Agree!
this isn't the place for bad fights

Send eachother some brotherly emails
and sort this out .. to become good audio friends, again

Will be of benefit for all kind of business offerings
to us friendly diyAudio members

Regards Lineup from Sweden

 

[Pocoyo]

Grrr ..... That picture

In Japan, India and China they have snow & ice.
In high mountains.
You have high mountains with snow in INA?

Love song from 60's to 80's .. magic you never heard Great!
You have good sound system & good AUSSIE amplifier.

What speakers you have?
I sure you tell in some post .. but I remember not.

Lineup
Sure Pocoyo will join today
Lineup Audio sound forum for indonesian

hey hey sweden

Ahhhhh ... Lineup i know what you mean now !

That picture is forest must be you mean TOTEM FOREST
hahaha

The speaker still in the cellar
take preventive step due to my children 1 & 2.5 year
a lot of thing happen in my house now

I cant imagine what happen if .....