800 Watt MOSFET Amplifier Module

[The Saint]

Here is my latest amplifier module hot off the press!
Contact me for more info:
It is available now for purchase from my online store!

Cheers
Anthony

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.

* Featuring Balanced XLR and Single Ended RCA input stage.
* Can be power from separate power supplies for the Input and Driver Stage
* Very low noise and distortion
* Unconditionally Stable
* Extra Heavy Duty three ounce copper printed circuit boards.
* Gold Immersion copper track plating
* Rugged high performance Toshiba MOSFET output stage.
* RoHs Compliant
* Very easy to install and get going
* Sound quality and reliability rivaling the best in the world

Preliminary Specifications

* 500 Watts RMS continuous sine wave into 8 Ω
* 800 Watts RMS continuous sine wave into 4 Ω
* 1200 Watts RMS short term sine wave into 2 Ω
* The HPA-nxV800 is 2 Ω Stable
* Biased into Class A/B
* Power Bandwidth 3.5hz to 250khz -3dB
* Slew Rate = 90 volts / microsecond approximately
* Dampening Factor At 100hz 8Ω = 1300
* Dampening Factor At 1khz 8Ω = 915
* Dampening Factor At 10khz 8Ω = 248
* RCA Single ended Input impedance 20kΩ
* XLR Balanced Input Impedance 40kΩ
* Differential Input Gain = 33.8dB
* Single Ended Input Gain = 28.1dB
* THD+N - Typically 0.003%
* Recommended Voltage Supply +-98 volts DC
* Operational Supply Voltage Range +-20v dc to +-105 volts DC
* PSU Power Transformer secondary windings 65vac (1200VA)
* Printed Circuit Board Dimensions 325mm x 50mm
* Minimum Recommended Conrad heat sink MF35-100 to MF35-151.5

 

[The Saint]

:d:d:d

 

[The Saint]

🙂

 

[jam]

Anthony,

A few questions

a) How is the loudspeaker protected?
b) What is the topology of the front end?
c) What do you bias the amp at?

Thanks,
Jam

 

[The Saint]

Anthony,

A few questions

a) How is the loudspeaker protected?
b) What is the topology of the front end?
c) What do you bias the amp at?

Thanks,
Jam

Hi Jam

To protect the loudspeaker from possible damage, The LSP-One loudspeaker
orotector that I sell is well suited to be mated with the nxV800 module.

The front end topology is Complementry Differential folded cascode and Nested feedback loop included in the topology.

The output stage is biased to around 40ma per output device
so the total per voltage rail would be around 240ma.

I hope this helps Jam 🙂

Cheers
Anthony
Aussie Amplifiers
DIY Amplifier - Audio Amplifier Modules - MOSFET Amps - Audio Electronics - Power Amps

 

[ackcheng]

looks really cool! My nxV500 really rocks! This can even be better!

Congratulations

 

[AKSA]

Anthony,

Bewdiful work, absolutely stunning!

I bet it sounds as good as it looks.......

Hugh

 

[The Saint]

Anthony,

Bewdiful work, absolutely stunning!

I bet it sounds as good as it looks.......

Hugh

Thanks Hugh! 🙂

Yes it has an awesome sound quality, you just would not believe it
is a high powered amplifier by the way it sounds.
It has all the power and authority of a very high powered amplifier with the detailed imaging and sound stage usually attributed to much low powered amplifiers. 😀

Cheers

Anthony

 

[N4CR]

Ordered two of these tasty puppies for a dual voicecoil sub setup, damping for africa, will let you guys know how they sound and post up a build thread when I get them and get started 🙂

 

[tjencks]

N4CR,

I am currently building a pair of subs as well based on the Exodus audio Maelstrom 18's and powered by the HPA-NVx1200's. Already got my amps but have yet to complete either build. Hopefully this weekend will see the completion of the sub cabinets. I will also post build pics when finished.

Regards,
Theo

 

[Sethalpine]

Question

What is the website of your online store so I can buy this

 

[The Saint]

What is the website of your online store so I can buy this

Hi Sethalpine

The nxv800 is available from High End Audio MOSFET Amplifiers
from the online shop.

If you have any other questions please let me know.

Cheers

Anthony
Aussie Amplifiers

 

[Sethalpine]

Question

I looked there and I could not find the 1200 watt amp

 

[The Saint]

I looked there and I could not find the 1200 watt amp

Hi Sethalpine

Here is the direct link to the online web shop
Both the nxV800 and the nxV1200 amp module can be found just below the nxV200, 300 and 500 modules.

Holton Precision Audio Online Store - Audio Electronics -

Cheers
Anthony 🙂
Aussie Amplifiers

 

[Rns audio box]

Hi sir the saint,

can i get the schematics diagram or black diagram that you made it...

can you share it to me becuse im interested to assemble in this circuit..

thanks....

 

[chlorofille]

Unfortunately no schematics will be provided as it is a commercial product.
I have his NxV200, love the grip, dynamic authority and bass control for music.
(playing daily for 4 years!)

 

[DACALL]

Anthony -- I am just starting to build a dual mono amp using your NxV300's ---- I note in your photo that you use two chunky caps placed directly on each RCA input.
What type and value please?

 

[The Saint]

Anthony -- I am just starting to build a dual mono amp using your NxV300's ---- I note in your photo that you use two chunky caps placed directly on each RCA input.
What type and value please?

Hi Dacall

The caps I used there are Sonicaps 3.9uf Gen 1.

I hope this helps.
Also please smed me photos and comments when you have finished
and I will post the on the web site Gallery.

Cheers

Anthony🙂

 

[DACALL]

Caps

Thanks -- I have a pair of 10uf silver foil similar --will they be ok -- and do I have to remove any components at the PCB's?

(I sent you duplicate by e'mail -- no need to respond to this)

Dacall

 

[DACALL]

Ekta Grandes -- just completed in time for Christmas -- looking forward to new Aussie amp build now.