Replacing 6501s or 6500s with 6503s??

geppy1

In looking at the specs does anyone see any real problem with replacing 6501s or 6500s with 6503s?? thanks

Driver: MW 6503 Driver's model #.
Brand: Polk Driver's brand name.
Fs: 29.8600 Hz (Free air resonance)
Vas: 3.0017 ft^3 (Compliance volume)
Qts: 0.3100 Total Q
Qms: 1.7680 Mechanical Q
Qes: 0.3760 Electrical Q
Sd: 0.0130 M^2 (Piston area)
Xmax: 3.1800 mm (Cone excursion, linear)
Revc: 6.5400 ohms (DC resistance)
Znom: 8.0000 ohms (Nominal impedance)
Pmax: 35.0000 watts maximum rated power

Driver: MW 6501 Driver's model #.
Brand: Polk Driver's brand name.
Fs: 31.0000 Hz (Free air resonance)
Vas: 2.7545 ft^3 (Compliance volume)
Qts: 0.2790 Total Q
Qms: 1.4700 Mechanical Q
Qes: 0.3440 Electrical Q
Sd: 0.0130 M^2 (Piston area)
Xmax: 3.1800 mm (Cone excursion, linear)
Revc: 7.7500 ohms (DC resistance)
Znom: 8.0000 ohms (Nominal impedance)
Pmax: 35.0000 watts maximum rated power

Driver: MW 6500 Driver's model #.
Brand: Polk Driver's brand name.
Fs: 31.0000 Hz (Free air resonance)
Vas: 2.6486 ft^3 (Compliance volume)
Qts: 0.2190 Total Q
Qms: 1.3000 Mechanical Q
Qes: 0.2640 Electrical Q
Sd: 0.0130 M^2 (Piston area)
Xmax: 3.1800 mm (Cone excursion, linear)
Revc: 6.5000 ohms (DC resistance)
Znom: 8.0000 ohms (Nominal impedance)
Pmax: 35.0000 watts maximum rated power

geppy1

Bump

westmassguy

The VAS is over 10% higher on the 6503, but the real problem is the DCR on the 6501s, 7.75ohms. Impedance is obviously different than DCR, but your crossover point is going to change. 6501s do pop up on eBay.

On3s&Z3r0s

I have some MW6501's I'd be willing to part with (three I think, if I can find them in storage). I have replaced MW6500's before with MW6503's, and for temporary use at least it seemed to work fine. I couldn't speak to a direct comparison since the MW6500's were shot, but the speakers sounded reasonably good to my ear with the 6503's in place of the 6500's. Feel free to PM if you're interested in the 6501's.