The amplifier (Beolab 150/200) is a stand alone unit with a flat frequency response. The Penta crossover is what causes the slight rise at 120Hz. Pentalabs are not active but amplified speakers.

Peter wrote:

The amplifier (Beolab 150/200) is a stand alone unit with a flat frequency response. The Penta crossover is what causes the slight rise at 120Hz. Pentalabs are not active but amplified speakers.

Crossover? You sure? I'd have pegged that as a deliberate bass reflex alignment not a crossover, I would assume a low pass without any power robbing contouring circuitry in the bass drivers. You can get about any hump you want by how you tune the bass alignment. 

You are probably correct - the amplifier itself is flat though. 

I find the Beolab 2 to be only good for movies, not music; and I find the complete opposite for the Beolab 11! I'd buy a sub if B&O made one that suited movies AND music.....

Peter wrote:

the amplifier itself is flat though

Hmm.. I don't know but it doesn't seem to be flat, there a low pass/hi cut filter between output stage & speaker output. Maybe that's for compensating some un-linearity generated in the input stage?

Interesting, do you know the freq of the knee and slope? It could be what's occasionally used passively on some home brew speakers, often on small single full range driver ones, a baffle step correction to remove the diffraction step due to a narrow speaker baffle to the speaker doesn't sound too bright or thin. 

hotknife wrote:

Veermer,

if you like big b u u u u m  and movies like DIE HARD, yes the BL2 is a very good subwoofer. But if you like listen to music too, the BL2 is not the first choice.

 

In 2011 after I`ve bought the BL9 speakers, I`ve written a review in the old archive forum. I suggest you use a online translator.

/forum/general-discussion-and-questions/beovision-eclipse#post-2091015

Thanks. I will consider it.

Hi all, for me it is:

1. BL 5

2. BL 1

3. BL Penta.

I admit it is a close call between lab 1 and penta as pentas are very good. Lab 1 is simply the better speaker each again after listening to pentas for some months. Now they are gone another happy owner and lab 5 are in the house!