VR-4 SR Mark 2

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VR-4 SR Mark 2

Postby JackD201 » Sun Feb 04, 2007 12:11 pm

The VR-4 SR made its Philippine debut at the 2005 November Hi-Fi show to much praise driven by thestellar all-tube BAT electronics sourced from the great guys at Architectural Audio. Takin' a look at our notes, we found comments praising all aspects of their performance our favorite however was a dialogue between a man and his 20-something grandson where they were discussing how they could just "stay here all day". In fact one senior PAS member actually did :lol: He stayed inconspicuously in a corner with his eyes shut and swaying or foot tapping to the fantastic LPs brought by mva, Jadis, Jon Agner and myself.

The addicting palpability and bloom mixed with the focused and precise power of a properly fed Von Schweikert loudspeaker is something many have heard and from an initial "anong kumpanya iyan? (What company is that?)" and "Saan gawa yan? (Where are they from?)", VSA has become here in the Philippines and abroad a marque to aspire for. A loudspeaker that can be appreciated by even the most die-hard planar lovers due to VSA's high speed and resolution and even by die-hard low powered SET afficionados due to their ability to reproduce liquidity, warmth and image float with coherence rarely found in multidriver dynamic designs. Rarely will one find loudspeakers that can just "get out of the way" and really let you know what is happening in the signal path before them. This is perhaps why VSA speakers are owned and used by more PFO reviewers and contributors than any other single brand.

The venerable VR-4 SR is now in its Mark 2 configuration with a new 100dB sensitive Aerogel midrange driver (A paper and kevlar pulp suspended in an aerospace gel and cooked at high temperature resulting in an ultra light ultra stiff cone with the best Young's modulus ratio of any dynamic driver available). It also incorporates the same damping material (the material used to sound proof the inner hulls of US nuclear submarines) that made its debut in the more than twice the price VR-5 SEs.

The germans have been hogging the US press lately here is what Germany's premiere audio mags Image Hifi and Hi-Fi and Musik say about the new VR-4 SR Mark 2:

VSA delivers ultra-high levels and dynamics with ease. And even more power is not bad – the
speakers use whatever you are willing to give to them.

Once you find the optimum place in your listening room, this is the time to add the spikes to the
speakers and also the time for the adjustment of the “Ambience Driver”; subtle but thoroughly
crucial. This second “Ambient” tweeter expands the presentation of room and the colors of the
instruments and voices with a decisive “kick” towards “live”. In accordance to Albert Von
Schweikert, all other frequencies are omni-directional in a sufficient way and therefore presented all
over the room. The “Ambience Driver” is of enormous importance for adjusting the sound from the
speakers. It’s the completion of the best part of the VR-4 SR: the disappearing of the speakers,
within a short period of time, from the acoustic soundstage.
And soundstage in this meaning is not a 2-dimensional picture. No, here it happens in the form of a
“head cinema” in an overwhelming 3D-format – and exactly in a way, which was never achieved by
the picture technology: Perfection in sound colors without exaggeration; totally sharp with
harmonious motion sequences; virtuoso meshing of instruments and voices; no jerking, no jigging,
wonderful 3-dimensional soundstage with enormous depth of focus – all in all ... a special treat for
connoisseurs.


And where other manufacturers are anxiously waiving “one-note” deep bass in order to optimize
other disciplines, in the VR-4SR you can simply find it all together:

• wide band homogeneity,
• musical rhythm and flow,
• almost endless dynamics and
• an extremely deep, well outlined fundamental bass.

If all this doesn't mean “real” high-end – then what does?


Here's the kicker from the measurement section though......

"..truly world class, (sic) the VR-4SR is one of
the best engineered speakers in the world."

When was the last time you heard germans praising american engineering? :lol:

ladies and gents.......

The VR-4 Senior Mark 2 msrp $12,000

Image
Last edited by JackD201 on Wed Oct 17, 2007 1:07 am, edited 1 time in total.
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Postby qguy » Tue Jun 19, 2007 7:21 am

Hey Jack/Keith

How does the slanted/angled baffle of the tweets/mids in some of the VR models affect the seated listener. whats is the advantage of this vs a non-angled affle
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Postby JackD201 » Tue Jun 19, 2007 11:46 am

Hi Q,

The slanted baffle is an application of mechanical time alignment as opposed to electrical time alignment used in many flat front speakers like our own VR-2. Mechanical alignment means spending more on precision cabinet construction but also means less electronic parts in the crossover signal path.

The general effect is better coherence with less noise and time based anomalies. Note however that a slanted baffle still has to be implemented properly and the sight of one does not guarantee better performance. ;)

The one who can best describe this is noctilux aka nhocty :lol:. He has built a number of DIY speakers using the principle.

Hope this helps.

Jack
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Postby qguy » Tue Jun 19, 2007 12:04 pm

follow up question..

is the stereo image affected by this as the drivers are pointed upwards vs drivers which are pointed directly to the listener ?

JackD201 wrote:Hi Q,

The slanted baffle is an application of mechanical time alignment as opposed to electrical time alignment used in many flat front speakers like our own VR-2. Mechanical alignment means spending more on precision cabinet construction but also means less electronic parts in the crossover signal path.

The general effect is better coherence with less noise and time based anomalies. Note however that a slanted baffle still has to be implemented properly and the sight of one does not guarantee better performance. ;)

The one who can best describe this is noctilux aka nhocty :lol:. He has built a number of DIY speakers using the principle.

Hope this helps.

Jack
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Postby JackD201 » Tue Jun 19, 2007 12:22 pm

Baffles are angled to meet optimal on and off axis response targets by their designers. I can't generalize by saying slanted baffles are always better since there are many electrically time aligned designs that give phantom images that are just as solid. Angling by no means is meant to raise the soundstage height. It is done simply to have the sound from the tweeter arrive at the same time as the mid-woofer.

Regardless, listening heights do vary due to the height of the listeners themselves and the height of their chairs. VSA speakers have very wide dispersion so offer a larger sweetspot and generally should just be levelled and require little or no toe in. So you can sit stand or move around the room and still get a solid soundstage. Some narrow sweetspot speakers like classic Quads and even classic B&W 801 matrix models like stands. Sonus Faber encourages experimenting with rake angles (lowering or raising the front spikes).

Again we can trace this to two factors:

1. The drivers used - some require mechanical or electrical time alignment, some less so

2. The Crossover design - After the designer has built, rebuilt or chosen his drivers it is his call to decide whether

a. He wants to time align his speaker at all
b. Which time alignment method he wishes to use
c. Engineer the baffle accordingly

The bottom line is regardless of the combination. All designers, be they DIY enthusiasts or rock stars of the audio world, strive for the stereo sound which comes closest to what they envision as ideal.
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Postby edlo » Fri Jul 11, 2008 10:05 pm

jack,
Any used ones VR 4 or VR5s for sale?

Ed :P
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Postby JackD201 » Sat Jul 12, 2008 1:33 am

Hi Bimmer Bro,

There's the ebony vr-5 demo at 30 off. Serial No.0001L/R. A collectible. Finish is Satin Ebony, mint with crates and free granite slabs to protect your floor.

As for the SR Mk.2s, so far there are none on the second hand market. Owners love them too much.

cheers,

Jack
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edlo

Postby Pause » Sat Jul 12, 2008 2:37 am

I've heard this speaker. this thing is the bomb. And so friggin gorgeous, the woodwork is fantastic.
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