I am wondering it would be better to not use the manufacturers recomended box specs, or are they the best to use ?

Here is the specs
</b> Notice that there are sealed box suggestions</b>

What is the best as far as the sealed box goes ? what does low QTC mean ? would it be the better size of enclosure for the best output ? Or whatever a low QTC would do to bennefit the output.

Model Number HP10D4
Fs (free-air resonance, Hz) 38.52
Vas (equivalent compliance, cu. ft.) 0.56
Vas (equivalent compliance, liters) 15.75
Qms (Q, mechanical) 4.13
Qes (Q, electrical) 0.62
Qts (total driver Q) 0.54
Re (DC resistance, ohms) 6.85
Z (nominal impedance, ohms) 2.8
Le (inductance, mh) 2.96
Efficiency (1W @ 1M, dB) 83.5
Xmax (one way linear excursion, in.) 0.67
Xmax (one way linear excursion, mm) 17.19
Pe (continuous power handling, watts) 500
Peak power handling (music, watts) 1000
Mms (total moving mass, grams) 183.66
Cms (mechanical compliance, mm/N) 92.92
Bl (motor strength, Tesla-M) 22.18
Sd (effective radiating area, sq. m.) 0.035
Sd (effective radiating area, sq.in.) 53.78
Frequency range (Hz) 40-2.5k
Energy Bandwidth Product (EBP) 62.23
Model Number P10D4
Mounting hole diameter (inches) 9.45
Mounting depth (inches *) 5.25
Basket diameter (inches) 10.45
Model Number P10D4
Typical sealed enclosure (cu. ft.) 0.5
SPL sealed enclosure (cu. ft.) 0.45
Low Qtc sealed enclosure (cu. ft.) 0.65
Vented enclosure (cu. ft.) 0.95
Port tuning frequency (Hz) 50hz
Port diameter (inside, in.) 3
Equivalent square port (in.) 2.65x2.65
Port length (in.) 5.67