TPL-150H and TPL-150 is the same twitter. Only diference is with or without horn.
How can you descibe a difference in terms of listening?
Build the sub with the drivers on the side (dual opposed) at floor level to reduce vibrations and get the Allison effect.
How can you descibe a difference in terms of listening?
The TPL with or without horn, they sound very similar. The main advantage is the extra 3 db.
With the horn and the acoustic lens of oneoclock, my feeling is of sound with more definition.
The most important difference is dipole vs closed.
Regards