Buchardt S400 Mk II vs Sony SSCS 5 in Bass

Maybe I was over reacted to the lesser wattage of my Parasound amp.  I wrote to Buchardt and they also mentioned the amp is a great one and should not be a  concern/issue.  They were saying S400 is a neutral speaker aiming for flat response.  The mid-bass is not boosted like most of the ported speaker (like Sony) so S400's bass might not be that strong as a comparison but it hits deeper notes for sure.  As you have suggested, they recommend to move the speaker closer to the wall even to the corner.  I did find the bass is essentuated but still prefer leaving its tweeter 3 ft away from either back or side walls to give the speaker space to breath.  I found also the soundstage depth suffers a bit when I move it closer.

Lastly, Buchardt suspects one of the speakers may not be airtight enough (which is important to being a closed-enclosure speaker) and asks me to do the airtight test.  The test goes like gently push in the passive radiator on the backside, and then noticing that the front woofer get pushed out and see how long time it takes for the front woofer to return to its default position. It should take 3-4 seconds, maybe a bit less.  I am going to test both speakers tonight.

@dwest1023  

I will appreciate if you could also perform the airtight / leak test as described above  on your S400, and let me know how long does it take the woofer or PR to get back to its normal position / equalization of internal pressure.  I have read somewhere that it will actually take longer time (say 6-8 seconds instead) to return to its default position.  Appreciated.

anything above 60Watts should work fine with the Buchardts. I never read or saw any tests where they complained about the bass or used a beast like the  Pass Lab 250

Oh, agreed @grislybutter.  I would like to have @dwest1023 test on his speaker, not the Pass int 250.  The Buchardt has suspected one of my S400 Mk ii's internal is NOT airtight enough to the standard to push the PR well.  I just want to confirm that.

I know longer have the 400’s but have a pair of the 400 Mrk 2 special.Edition on the way. I will do the test then FedEx says they will be here this Saturday. To grisly, the I dont think I said you need a Pass labs to get bass from the 400’s. At the time that is what I used when I had them. My pass is overkill especially in my 12x 14 room. . Lanx003, seems like you are looking for pounding kick drum bass? Im not sure the 400’s do that.