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  1. #1

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    Thumbs up I jus finished my diy amp!

    Hello I just finished my diy amp, I was just waiting for some input caps but finally they arrived today.Take a look.

  2. #2

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    Most nice - how many watts?
    Aaron

  3. #3
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    Looks nice inside. What is it?

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    Quote Originally Posted by ALL212 View Post
    Most nice - how many watts?
    Well this is the specifications:


    110 Watts RMS continuous sine wave into 8 Ω
    180 Watts RMS continuous sine wave into 4 Ω
    The HPA-nxV200 is 2 Ω Stable
    Biased into Class A/B
    Power Bandwidth 3.5hz to 600khz -3dB
    Small Signal Bandwidth 3.5hz to 3.5mhz
    Dampening Factor At 100hz 8Ω = 800
    Dampening Factor At 1khz 8Ω = 650
    Dampening Factor At 10khz 8Ω = 250
    RCA Single ended Input impedance 33kΩ
    Single Ended Input Gain = 30.6dB
    Signal to Noise Ratio -120dB
    THD+N - Typically 0.005%
    Recommended Linear Voltage Supply +-50 volts DC
    Printed Circuit Board Dimensions 50mm x 50mm
    Ultra small form factor PCB
    Designed as high performance Home Theatre multi channel amplifier
    Or High End 2 Channel stereo amplifier
    Unconditionally Stable into any load from 4 to 16 Ohms
    Extra Heavy Duty three ounce copper printed circuit board
    Ground plane Layer for very low noise.
    Rugged high performance complementary Toshiba MOSFET Output Stage.

  5. #5

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    Quote Originally Posted by zingo View Post
    Looks nice inside. What is it?
    Hehehehehe lol. it is my diy integrated amplifier.

  6. #6

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    Default Amp

    So do you like the sound of it? What did it cost for the kit and misc parts and case? Is this an aussie amp? Specs look good.

  7. #7

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    Nice clean workmanship. Did you notice that the middle orange wire tie has a slight burn mark on it.

    Great job !!!! Shame to have to cover all of that good work.

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    Cool, but what do the bottlecaps in the bottom right corner of the pic do?
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  9. #9

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    Quote Originally Posted by bikerboy View Post
    So do you like the sound of it? What did it cost for the kit and misc parts and case? Is this an aussie amp? Specs look good.
    Do I like the sound? I love it!!!. Well around $600 and yes! this amp kits are from Aussie Amplifiers These are the nxv200.;)

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    Quote Originally Posted by Fongolio View Post
    Cool, but what do the bottlecaps in the bottom right corner of the pic do?
    Volume pot.

  11. #11

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    Quote Originally Posted by Vette C6.r View Post
    Nice clean workmanship. Did you notice that the middle orange wire tie has a slight burn mark on it.

    Great job !!!! Shame to have to cover all of that good work.
    Thank you! but that black mark is from black spray paint that by mistake got on the top of it. ;)
    Last edited by lanchile; 02-07-2010 at 06:03 PM.

  12. #12

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    Quote Originally Posted by Fongolio View Post
    Cool, but what do the bottlecaps in the bottom right corner of the pic do?
    The white ones? well those are the input capacitors from Sonicraft.
    High-pass filter capacitor to couple the signal source to the amplifier means that the amplifier can only amplify AC signals. A steady, DC voltage applied to the input would be blocked by the coupling capacitor just as much as the voltage divider bias voltage is blocked from the input source.
    I used these input caps because I do not use a separated preamp,since this is an integrated amp and I wanted to block DC voltage coming to the the input of amp.
    Last edited by lanchile; 02-07-2010 at 06:09 PM.

  13. #13

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    I'm sorry I see it now. The volume pot in the bottom right corner of the pick looks weirdly like two blue bottle caps from the side. Just me being stunned.

    Very cool project
    SDA-1C (full mods)
    Carver TFM-45
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    Cambridge Audio DACmagic Plus
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  14. #14

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    Quote Originally Posted by lanchile View Post
    Do I like the sound? I love it!!!. Well around $600 and yes! this amp kits are from Aussie Amplifiers These are the nxv200.;)
    Well, lets see here. The boards are around $300 per pair (stereo), the transformer is $130, the mundorf caps are $100, The Sonicaps are $20, the potentiometer is $25 that is the total of $575 more or less! plus the rest like bridge rectifier, smooth caps,thermistors,cables,switch,chassis etc.But I used an old chassis from a Portal panache amp so I save some money there.I know with that kind of money I can get a new amp or an used one on eBay but,Trust me when I say I had so many amps including tube ones,But I always found something wrong with them, They never pleased me 100%. if anyone is for diy amps...look not farther!.The nxv200 amp kits can beat many good commercial amps even some Bryston amps!!! yeah you hear me right even some Bryston amps. How do I know this? Because I had a few Bryston too! and I did a test with some of my friends amps like Blue Circle, Bryston, Luxman, Adcom, and a $3000 amps that I do not remember the name but it was a monster.I do not say these diy amps are the best but,They definitely are worth to build one.
    ;)

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    Quote Originally Posted by Fongolio View Post
    I'm sorry I see it now. The volume pot in the bottom right corner of the pick looks weirdly like two blue bottle caps from the side. Just me being stunned.

    Very cool project
    hehehehehe,it is only one! and I used this kind of potentiometer for its quality, it is better than Noble and Alps potentiometers for sure!
    Last edited by lanchile; 02-07-2010 at 06:47 PM.

  16. #16

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    Nice Job!
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  17. #17

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    Quote Originally Posted by danz1906 View Post
    Nice Job!
    Thank you!. it took me a little more than two weeks to finish it. The bad thing is to wait for all the parts, I had to order the parts from four different companies. But it was worthy the wait!!!;)

  18. #18

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    Thumbs up I love the sound!

    I am very confident that this amp can kick some a$$ even those good commercial ones. I had soo many good amps including Bryston and tubes but, I always looked for something different, something better.but I did not want to show just the name of my amp,I wanted a clear but not fatiguing sound that I could listen for hours and hours without headaches, I did many diy amps including Gainclones LM3875 from Audiosector. Well I spent around $600 and yes! this amp kits are from Aussie Amplifiers These are the nxv200. and if you are into diy staff....go for it!!!;)[/

  19. #19

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    Quote Originally Posted by lanchile View Post
    How do I know this? Because I had a few Bryston too! and I did a test with some of my friends amps like Blue Circle, Bryston, Luxman, Adcom, and a $3000 amps that I do not remember the name but it was a monster.I do not say these diy amps are the best but,They definitely are worth to build one.
    ;)
    Nice Project and not too bad for $600! Is this in USD? Do you mind disclosing what amps from Bryston and Luxman are beaten by this Aussie Amp?
    Trying out Different Audio Cables is a Religious Affair. You don't discuss it with anyone.

  20. #20

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    Quote Originally Posted by megasat16 View Post
    Nice Project and not too bad for $600! Is this in USD? Do you mind disclosing what amps from Bryston and Luxman are beaten by this Aussie Amp?
    Yes, it is $600 USD.Well I did side by side test with some friends using:
    Bryston B60 , Bryston 4B (with Adcom pre-amp). Adcom GCA-510 (rare)The luxman was the R117(Receiver), Portal panache integrated amp, Acurus DIA-100 MK.most of them I sold to my friends lol. I do not say they sounded bad but, the sound of these diy amps from Aussie amplifiers are awesome and beated the above amps!;)

  21. #21

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    Yeah! I checked their website and found it uses IFR MOSFETs (240 and 9240) so it may sounds good. It's the same MOSFETs in most Pass DIY amps too.

    I can understand how it beats the Integrated amps and Lux Receiver but not too sure about 4B. So, it sounds better than Bryston 4B too?

  22. #22

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    Quote Originally Posted by megasat16 View Post
    Yeah! I checked their website and found it uses IFR MOSFETs (240 and 9240) so it may sounds good. It's the same MOSFETs in most Pass DIY amps too.

    I can understand how it beats the Integrated amps and Lux Receiver but not too sure about 4B. So, it sounds better than Bryston 4B too?

    Well,I was like you too. I could not believe it either! and yes it did and it was not only me that found it has better sound than the Bryston 4B. all my friends (5) said this amp the sound was so clean and clear but not fatiguing at all.That is why I ordered a second pair to have them for future projects.
    the power supply should be hefty, I am using a toroidal transformer from Toroid corporation of Maryland it is a 670vac 35vac x2 with 40000uf Mundorf caps and Mur860 x8 rectifier and some smooth caps on each diode to filter any noise.I would not go lower than 40000uf with these kits they need a lot of juice, The more...the better lol.
    anyone in diy staff should try to build some of these guys and see for them self what I am talking about.
    This diy amp kits use Toshiba 2SK1530/2SJ201.

  23. #23

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    Nice job. Looks like $600 well spent. How much time?
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  24. #24

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    Quote Originally Posted by Ranger0912 View Post
    Nice job. Looks like $600 well spent. How much time?
    Well if I had all the parts, it will be in one day, but I had to wait for parts so it took me a little more than two weeks. But it was worthy.

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    Thumbs up

    Nice work!

  26. #26

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    NOICE!!! PLEASE tell me you used silver solder on your joints.
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  27. #27

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    Quote Originally Posted by jrgoswick View Post
    NOICE!!! PLEASE tell me you used silver solder on your joints.
    http://www.parts-express.com/pe/show...number=370-038
    Last edited by lanchile; 03-26-2010 at 11:51 PM.

  28. #28

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    Nice job, pretty juicy torodial transformer, looks like the same size that in my b&K 200.2, I do enjoy the MOSFET sound.
    Perhaps a DIY project is in my future, I could use a 3 CH to power the rears and center....
    -------------[The Ever-Evolving System -------------

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  29. #29

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    Post 28/29 reported, nice woman though... Nice amp...

  30. #30

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    Very nice! Must be very satisfying to build your own stuff.

    Source: Squeezebox Touch/CIA Power Supply
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