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Quantum 2 questions

that70sguy

that70sguy

Well-Known Member
I recently picked up a pair of Quantum 2 speakers. Beautiful cabinets, fantastic sound mated to an Accuphase E-202.

It looks as if the midbass coupler on one of the speakers needs repair. I get that flapping sound when volume is turned up at medium levels. I am leaning toward sending these to SimplySpeakers to have a recone. Any recommendations otherwise? Also, should I have both couplers done even though the other one is fine?

Also, what is the ideal placement for these? Right now there is the corners, about 6-8 inches from the walls.

thanks for you help.
 
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Congratulations on getting a great pair of speakers! I would have both midbass couplers reconed to keep them matched. Placement of my Q2's is several feet from the side walls and a foot from the wall in back.

YamahaDisplayCabinetview002.jpg
 
Mark B said:
Congratulations on getting a great pair of speakers! I would have both midbass couplers reconed to keep them matched. Placement of my Q2's is several feet from the side walls and a foot from the wall in back.

YamahaDisplayCabinetview002.jpg
Click to expand...

thanks for your input. man, what is that monster amp on the top shelf? Looks like you have no problem driving those Quantum 2s!
 
I believe that is the vaunted Yamaha MX-10000 with the hyperbolic conversion class A circuit, delivering 300W x 2 into 6 ohms, capable of delivering pure class A operation without switching and without cut-off for all power domains and into all loads, meaning load currents from zero to infinity.

In other words: Nice amp! :D
 
tlgibbs said:
I believe that is the vaunted Yamaha MX-10000 with the hyperbolic conversion class A circuit, delivering 300W x 2 into 6 ohms, capable of delivering pure class A operation without switching and without cut-off for all power domains and into all loads, meaning load currents from zero to infinity.

In other words: Nice amp! :D
Click to expand...

No doubt! I want one!
 
The Q2's really benefit from an amp that can deliver a lot of current.


How about posting some pics?
 
Mark B said:
The Q2's really benefit from an amp that can deliver a lot of current.
Click to expand...

I think you hit the nail on the head on this one. I hooked up a Rotel RB-980BX amp (130wpc) and used the Accuphase's preamp section. It made a big difference in bringing out a bit more detail from the Quantum 2s AND no flapping sound from the midbass coupler!

This leads me to believe that there may be a problem in the amp section of the Accuphase as 105wpc should be able to drive the Q2s.
 
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