Amp recommendations for Joseph Audio Perspectives2

Is 75 wpc enough for those speakers? I agree, talk to Jeff.

I had the Infinite Slope Crossover, I don’t understand how it would make any difference to placement. They were the most measurably accurate speakers I’ve ever owned, enjoyed them for many years, driven by 300wpc SS (they didn't need that much, it was a phase I went thru, 35 wpc tubes drove them well also)

I missed and now prefer my horns and 15" woofers, and back to tubes, JSE’s at my son’s house.

They were heavy, came on wheels, rolled forward and away from the corners, toed in.

I have my preferred location(s). I often talk about how a very small adjustment to balance can make a surprising difference.

Last night, playing Norah Jones, 2lp set, 2nd lp recorded live, after a while, I adjusted my toe in outwards some, it made a very nice difference. Last week, imaging was un-naturally weide, I toed them in some, bingo.

I’m a big fan of heavy speakers on wheels, pushed back when space needed for large family gatherings; pulled out the pre-determinned distance from rear and side walls for listening, and situational toe-in.

I use 3 wheels, (two front and 1 rear) so the weight per wheel is increased, and no wobble/vibration issues anywhere I move them. They can tip during movement, so I put two blocks on the back corners, just above the floor surface normally, but if they start to tip, the block stops any tilting movement. Not as important with my current monsters, more important with the taller JSI Infinite Slope Model 2’s, they came with 4 wheels, I changed to 3 and rear corner blocks.

@elliottbnewcombjr Thanks for sharing. Do you know if there are wheels options for the JA perspectives? I have isoacoustics GAIA feet to put them on my floors but it would be nice to have wheels installed. 

I ordered a VAC renaissance 70/70 mk3 to match the vac renaissance mk5 pre for the perspectives2. Will see how it goes.  

I see you are getting a matching Vac amp which will work very nice.  I know it's too late but I was going to suggest a new or used Quicksilver amp.  I owned the silver 70 amp and it's magical.

I own the DNA-1 Platinum Ultra amplifier and would recommend contacting McCormack and see if they have one around that isn't upgraded.  I went that route then had it upgraded twice over time.  Easy enough if you are local to SoCal (however, not sure about current situation on pickup/delivery).  One thing to note, it has an extremely high gain and should be carefully matched with a preamp.  I'm actually in the process of auditioning a passive device that has an adjustable active gain and see how that works in my setup.

these speakers around 80 lbs each. IMO they are heavy enough for stability on wheels.

lift one of these 80 lb bags of concrete mix at home depot,

https://www.homedepot.com/p/Quikrete-80-lb-Concrete-Mix-110180/100318511

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3 wheels for speakers. no wobble and more weight/wheel than 4.
80lb speaker: 26 lbs/3 wheels rather than 20 lbs/4 wheels

anti-tilt rear corner blocks (slightly shorter than the wheel height) do not touch floor when stationary, but contact floor if speaker starts to tilt during movement.

softer wheels for hard floors; harder wheels for carpet

2 front corner wheels, stable left to right
1 rear center wheel, unstable in rear when moving
2 anti-tilt corner blocks in rear
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quickie finds, just to illustrate ideas

wood finish, 14 x 14

simply relocate a rear wheel and add two rear anti-tilt corner blocks

https://www.wayfair.com/outdoor/pdp/innova-hearth-and-home-square-caddy-innv1246.html

perhaps try these, see if you actually benefit from adjusting toe-in. If not, remove them.

listen on spikes; listen on 3 wheels, any difference? I seriously doubt it.

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furniture dolly, 11.5 x 22.5 

cut to size, make finished wood cover to conceal it

https://www.homedepot.com/p/Stalwart-440-lbs-Wheeled-Furniture-Dolly-M550109/302662176

cut to size, reattach wheels, add two anti-tip blocks, then have local woodworker make a cover that simply drops over it, finished wood, laminate, paint, ....

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IF, after preferred placement is found, only adjusting toe-in, never pushing them rearwards, you might think about leaving the factory spikes, put them on a properly sized base plate that can be rotated.

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btw, 4 wheels can certainly work, you get a bit less weight per wheel, might not matter, and you simply need to solve any wobble that might occur, not hard, but I have bad back and knees, so I go for 3 wheels. You want the drivers to move, not the speaker, so 3 wheels is definitely preferred.