I have long hesitated between sub 15A and 705 rcf art and my ears prfr the sub 15, matter of taste! It is more lightweight and more, 32 kg 39 kg in rcf and manufacturing quality is exemplary! Frankly, this is the ideal sub, compact, powerful and reliable! So obviously, it's not a 38 rcf the inside but aprsdmontage the 38 manufactured by Db tech is very well made .Petite trick to reduce 80hz bump bypassing Eq a, I al alvlole a foam strip 15 cm high and the width of the front, before the membrane ... It takes 2 minutes and I think it suits a little things! 2 Art 310a, this is the best possible config-term report quality price / performance benefits for up to 250p especially compared HK, y 'no photo ... We will see the behavior in time but for now, I put 10/10 for this sub Db tech.