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Matching Speakers to amp

I currently own a PSA Stellar 300 paired with Focal Aria 926. I just picked up a used pair of Quad S-5 and I will be comparing the sound. I am not good a using technical specs to compare so I could use some help if anyone has the time to take a look at the amp & speaker specs below and give me some feedback I would greatly appreciate.
The basic question is: from a specification standpoint which speaker pairs up with the Stellar 300 best?


Stellar 300
Gain30.5dB +/-0.5dB Sensitivity for rated output power1.01V Noise1kHz@300 Watts <-100dB Input impedance S300Unbalanced 50KΩ
Balanced 100KΩ Input impedance M700Unbalanced 50KΩ
Balanced 100KΩ Output Impedance50Hz, 2.8VRMS <0.007Ω Damping factor50Hz. 2.8VRMS
8Ω >1100
4Ω >550 Frequency Response@2.8VRMS
10Hz – 20KHz +/- 0.5dB
10Hz – 50KHz +0.1/-3.0dB
Output PowerBoth channels driven 120vac mains, 1kHz, 1% THD 8Ω140W minimum 4Ω300W minimum 2Ω Stable for musical transients

Quad S-5
General description 3-way floorstanding speaker
Enclosure type ABR
Transducer complement 3-way ABR 165mm x3 Bass driver 165mm Woven Carbon fibre Cone x2
Midrange driver 125mm Woven Carbon fibre Cone Treble driver 12 x 45 mm
True Ribbon Sensitivity (2.83V @ 1m) 90dB
Recommended amplifier power 25-175W Peak SPL 112dB
Nominal impedance 6Ω
Minimum impedance 3.2Ω
Frequency response (+/-3dB) 42Hz ~ 23kHz Bass extension (-6dB) 35Hz Crossover frequency 570Hz & 3.2kHz

Focal 926
Speaker driversTwo 61/2" (16.5cm) Flax bass61/2" (16.5cm) Flax midrange1" (25mm) Al/Mg TNF inverted dome tweeterFrequency response (+/- 3dB)45Hz - 28kHzLow
frequency point - 6 dB37HzSensitivity (2.83V / 1m)91.5dBNominal impedance8 OhmsMinimum impedance2.9 OhmsRecommended amplifier power40 - 250WCrossover frequency290Hz / 2400Hz











jbuhl
georgehifi's avatar
georgehifi
4,966 posts
 
auxinput
I would think that you would want as hefty of a power supply as you could in the amp.
That’s a given, along with bjt’s to back the power supply for good current into low impedances. But as he said he’s looking at " $500-600 level" maybe old JC Parasound poweramps with a $49 Schiit Sys for the pre.
This could do. or an early HCA-2200
https://www.audiogon.com/listings/lis90c17-parasound-2250-solid-state

Cheers George
kosst_amojan
2,095 posts
 
Auxinput,
There's a difference between saying a class of amp can't do a job and saying that the power supply behind it is incompetent. 
jbuhl's avatar
jbuhl OP
90 posts
 
what about a unit like this? https://www.audiogon.com/listings/lis9147c-rotel-rb-1552-mk2-solid-state-amplifier-130w-x-2-solid-st...


Or the Outlaw RR2160 that was suggested bu @Kalali

I know I am getting out of the original budget but might be able to goad my sis into spending a bit more.

dishman442's avatar
dishman442
24 posts
 
The Quads will lose that hardness on top when you upgrade the cabling....
Post removed 
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