TubelabSE tube choice question

[huskydawg9]

I have an old pair of JBL L150a's with a sensitivity of 89db. If I use 45's will I get the WOW factor AND still get enough volume to fill the room? Or do I need the 300b's to get it where my wife will complain (to put it bluntly)?

 

[rknize]

2WPC would struggle. How big is the room? I would spring for the 300B config.

 

[huskydawg9]

It's 1/2 of a standard ranch house basement. Probably ~700 sq ft.

 

[Tubelab_com]

I have Yamaha NS10M studio's which are 87 to 89 db depending on what data you read. My room is only 110 square feet. The 45's are the best sounding tube that I have heard, but will not get a "turn it down" yell from my wife. On the other hand it and the trioded 6V6 amp are the only ones that I can crank when she is home.

 

[rknize]

With my less-efficient speakers (Boston Acoustic A70s), the TSE with 45s can achieve moderate volumes. However bass is noticeably lacking before any clipping becomes noticable. It does better with 300Bs, but even then I prefer the SSE with KT88s than the TSE with those speakers.