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Old 16th April 2012, 01:11 AM   #41
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Great, that sounds really interesting!

So my nxV200 sig´s then only miss out on the optional dedicated VAS supply...
Would sure love to have that

-Would it make sense to have the VAS supply externally regulated for extra stiffness and noise rejection?

Cheers,
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Old 16th April 2012, 01:27 AM   #42
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Location: Launceston, TAS, Australia
Quote:
Originally Posted by Juhleren View Post
Great, that sounds really interesting!

So my nxV200 sig´s then only miss out on the optional dedicated VAS supply...
Would sure love to have that

-Would it make sense to have the VAS supply externally regulated for extra stiffness and noise rejection?

Cheers,
Yes a regulated low noise supply would be the best option to get the best out of using separate VAS power supply.

Cheers

Anthony
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Old 16th April 2012, 01:47 PM   #43
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Originally Posted by The Saint View Post
With the R2s you can expect sharper focus on the imaging and sound stage.
The nxV200 Signature already has the nested feedback.
For the VAS supplies it is best to have at least 5 volts higher that the main output stage.

Cheers

Anthony
Anthony,

Would you say that the R2´s surpass or are equal in imaging focus sharpness and sound stage to the less powerful nxV200 Signature?

I´d guess that the better utilization potential of the VAS on the R2´s is (or can be) a game changer (if a high quality independently regulated VAS supply is employed)...

Cheers,
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Old 20th April 2012, 11:04 AM   #44
rodik is offline rodik  Europe
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Originally Posted by The Saint View Post
Hi Juhleren

The R2 nxv300 and nxV500 are based on the nxV800 module

Cheers
Anthony
Hi Anthony

If R2 versions are based on the nxV800, why they have different distortion characteristics?

Thanks!
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Old 20th April 2012, 11:22 AM   #45
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Location: Launceston, TAS, Australia
Hi rodik

I have not around to update the specs as yet for the nxv300 or the nxv500
web pages, so there is bound to be some discrepancies.

Cheers

Anthony
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Old 20th April 2012, 01:23 PM   #46
rodik is offline rodik  Europe
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Quote:
Originally Posted by The Saint View Post
Yes a regulated low noise supply would be the best option to get the best out of using separate VAS power supply.

Cheers

Anthony
Hi Anthony

How much current the regulated supply should be able to deliver to be enoungh for VAS supplying?

Thanks!
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Old 20th April 2012, 09:22 PM   #47
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Originally Posted by rodik View Post
Hi Anthony

How much current the regulated supply should be able to deliver to be enoungh for VAS supplying?

Thanks!
A 200ma Supply would be more than enough to drive the VAS-Driver stage per supply rail.

Cheers

Anthony
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Old 21st April 2012, 02:40 PM   #48
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Originally Posted by Juhleren View Post
Anthony,

Would you say that the R2´s surpass or are equal in imaging focus sharpness and sound stage to the less powerful nxV200 Signature?

I´d guess that the better utilization potential of the VAS on the R2´s is (or can be) a game changer (if a high quality independently regulated VAS supply is employed)...

Cheers,
?
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Old 23rd April 2012, 03:48 AM   #49
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Location: Launceston, TAS, Australia
Quote:
Originally Posted by Juhleren View Post
?
Hi Juhleren

Sorry for the late reply
I have been away over the weekend.
Yes the R2 modules would be equal in sharpness, focus and sound stage
to the nxv200 signature only with more power available.
It would also be true that by applying isolated regulated power supplies on the VAS driver stage you should hear some improvement in the sound quality.

Cheers

Anthony
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Old 23rd April 2012, 03:19 PM   #50
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Quote:
Originally Posted by The Saint View Post
Hi Juhleren

Sorry for the late reply
I have been away over the weekend.
Yes the R2 modules would be equal in sharpness, focus and sound stage
to the nxv200 signature only with more power available.
It would also be true that by applying isolated regulated power supplies on the VAS driver stage you should hear some improvement in the sound quality.

Cheers

Anthony
Thanks Anthony,
No probs with the lateness of the reply

As some 50W is more than adequate for my sensitive speakers I don´t need more `power´. What I will never get enough of on the other hand is `drive´ as my speaker are very revealing -especially on the dynamical and timing aspects of the reproduction.

In other amp topologies I have experienced that the VAS supply had great significance for how the amp were able to `drive´ and `time´ the speakers, so maybe that´s where I have to fish?...

- Also do you have any experience with bridging nxV200 (signature)´-which is another opportunity ?

Could that possibly approach provide more `drive´ and `pace´ to their sound considering the combined larger potential voltage swing of two modules per side?

-Also if possible, what would you recommend as optimal voltage in a bridged config?
(My guess is that something like +/- 35V would be a good compromise, or should I give´m more for larger voltage head room, or maybe less if it should provide better current capabilities for difficult loads?)

Cheers,

Last edited by Juhleren; 23rd April 2012 at 03:22 PM.
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