listening to nxV200 - Page 4 - diyAudio
Go Back   Home > Forums > Commercial Sector > Manufacturers > Aussie Amplifiers

Aussie Amplifiers High quality, high performance amplifier modules and accessories

Reply
 
Thread Tools Search this Thread
Old 19th November 2013, 04:27 PM   #31
hotzman is offline hotzman  Romania
diyAudio Member
 
Join Date: Oct 2008
Quote:
Originally Posted by The Saint View Post
The new module uses identical input/driver topology as used with the Toshiba devices with exception to the changes needing in biasing and Cdom compensation to suit the laterals.
Oddly enough distortion does not change much at all with biasing.
The optimum level for these devices is around 110ma per dual die device per voltage rail.
This is consistent with the use of the Toshiba devices as well that only need around 40ma max per device to achieve excellent results.
I do not place a great deal of faith in distortion levels, so long as they are of
a reasonable level in my experience of building amps since the early 1980s.

The Toshiba devices unloaded have lower distortion levels typically 0.005%, but when loaded have very similar distortion profile.
I fully expect the laterals to sound very similar to the Toshiba devices.

I have not had a chance as yet to do anymore tests as far as damping factor, I have a board full of orders to complete and ship so this is my priority at the moment.

Cheers

Anthony
Hi Anthony,
About HPA nx-V200 please tell me what happens if I try to change(increase) 100 mA or more per Toshiba device? Amplifier works more in class A?
Is beneficial or harmful to sound quality? Risk to ruin something?
I ask before making a blunder.
Thank you!
regards,
  Reply With Quote
Old 19th November 2013, 10:50 PM   #32
diyAudio Member
 
Join Date: Jul 2002
Location: Launceston, TAS, Australia
Hi Hotzman

Use a bias level of around 100ma would work well with the nxV200
on a +-50 volt supply rail.

I hope this helps you.

Cheers

Anthony
  Reply With Quote
Old 20th November 2013, 04:54 PM   #33
hotzman is offline hotzman  Romania
diyAudio Member
 
Join Date: Oct 2008
Thanks Anthony! super show! The sound is excellent, the bass is precisely incomparable listening to now!
All the best!
  Reply With Quote
Old 20th November 2013, 09:09 PM   #34
diyAudio Member
 
Join Date: Jul 2002
Location: Launceston, TAS, Australia
That's Awesome!
I am very happy the nxV200 modules are working well for you...

Cheers

Anthony
  Reply With Quote
Old 21st November 2013, 02:44 PM   #35
hotzman is offline hotzman  Romania
diyAudio Member
 
Join Date: Oct 2008
Hi again Anthony,
I want some advice on my new power amplifier project.
I want to use full HPA modules in dual mono configuration: HPA nx-V200 R2 Signature Series, HPA nx-Volt-One dual rail voltage, HPA PSU-three, HPA LSP-One, HPA Limit-One. (last three modules I have already!)
My question is which is the optimum voltage for VAS? I intend to buy custom power transformers with the following voltages on the secondary: 50V - 40V - 0 - 40V - 50V AC/ 3A.
40V-O-40V AC for HPA PSU and 50V-0-50V AC for HPA dual rail voltage.
I expect your advice!
Thank you!
Best regards,
  Reply With Quote
Old 21st November 2013, 08:53 PM   #36
diyAudio Member
 
Join Date: Jul 2002
Location: Launceston, TAS, Australia
Hi Hotzman

If you are going to use the Volt One regulator then you will need a 50-80VA
power transformer with 2 x 45VAC secondary windings as a minimum.
This would allow a regulated supply between 50 and 55volts DC on the input-driver stages of the nxV200 R2.

Send me an email and I will send you the installation manuals for the modules
you are looking at buying.

Cheers

Anthony
Holton Precision Audio
  Reply With Quote
Old 21st November 2013, 09:34 PM   #37
hotzman is offline hotzman  Romania
diyAudio Member
 
Join Date: Oct 2008
Hi,
I sent you a PM!
All the best!
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
What are you listening to? MikeW Pass Labs 36 20th June 2011 01:54 AM
Amplifier Special HPA-nxV200 The Saint Aussie Amplifiers 0 7th August 2009 04:50 AM
SKA GB150 or NxV200 skood Solid State 1 11th October 2008 01:54 PM
Ultra Small NXV200 Module The Saint Vendor's Bazaar 8 30th September 2008 03:31 PM


New To Site? Need Help?

All times are GMT. The time now is 11:56 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2