And now for the FF165WK

[Bob Brines]

Here are the measurements on a new pair of FF165WK's. The T/S specs are out-of-the-box. The RTA is with maybe 10hr.

I loaded the 165's in a pair of BR's that I had designed for the FE167E. The boxes are a bit big and tuned a bit low. I think that the ideal BR will be ~21L @45Hz. Anyway....

The new 165's have a sound very close to the old 167E's A bit firmer in the bass --note there is not BSC on the 165's. The bump @ 200Hz is probably baffle hump. The 165's are a bit sibilant as the FR would suggest. The only filter I see at this point is a low Q notch @4-7kHz.

I am pleased with the 165's They are drop-ins for the 167E's in my MLTL's where they sound better than the 166En's I forced into a modified MLTL. The highs are good enough for older ears, though the bat-eared will want a tweeter.

The FR traces are:
Black=0*
Red=15*
Blue=30*
Green=45*
Gray=Combined driver/port

Bob

[Godzilla]

Looks good to me. Thanks for posting your results.

[ra7]

Thanks for the measurements again Bob.

Why would say these are improvements over the FE167E? The treble looks fairly shouty.