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In Reply to: Von Schweikert Audio VR4-jr overall impedance posted by devilcoach on March 27, 2007 at 07:22:22:
If it is any help to you, The VR 4JR's are easy to drive.
I have a pair, and so did my friend Kurt, until he went to Vandersteen 5A's.
Follow Ups:
I own the VR 4jr and agree that it's easy to drive.Just curious to know its actual impedance.
Um ... actually I'm thinking whether a 300B power amp can drive it.
A 300B amp will not drive them well, Coloration in mids and low power.
Ran canary ca 339 clipped the %^&* out of it at times.
With the variable impedance mentioned in even the manual/document you cite, which is far from telling how varied, this will not be the best pairing with a SET of the 300B variety. Wide swings in impedance result in wide magnitude of output across the frequency spectrum. Tap at 4ohm and bass might be good, but mid/treble could be wacked, Tap at 8 ohm and bass will most likely run out of steam
That is a good question ?
As you know, the VR 4 JR's are a pretty warmly voiced speaker.
As such, they really don't "need" a majic amp to make em sound good.
Like many dynamic speakers, they like some current to control the woofers.I ain't saying SET won't work, but I think that you might be better off with a nice sounding solid state amp, or a medium powered tube amp.
That is just my opinion, and I have not tried SET with the VR 4 JR's.
Probably only at background levels.......
Von Schweikert Jr. recentlty told me to not run dual runs of cable from Amp to the top and bottom VR Speakers.
Instead he said to run a single cable from my Amp to the top and a use a jumper cable from the top to the bottom.
He says that how they wire theirs.
Now , I wonder if he was referring to perhaps the impedenace thing you guys are talking about.
I didnt do it because he really didnt sound like he knew what he was talking about.
Was he on to something?
Thanks all for the information, opinions, and advice.
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