Beolab wrote:

 

I was thinking of upgrade the midrange/bas and tweeter to a new more high end driver for more upper midrange details in the sound.

Has anyone dune this, or can recommend drivers that can fit the speaker holes ?

I was thinking Scanspeak Neodyne speaker drivers, but haven't find any who fit the holes.

Best regards 

Fredrik

 

I'd like to see Geoff's reply to this!  Even replacing a driver with the equivalent from B&O in many cases in Beolabs like this is not straightforward if my understanding of other similar threads is correct.  They need to be balanced/calibrated etc, it's not just a simple case of swapping a driver over.

I stand to be corrected and wish you luck.  I think my advice would be if you're not happy with the BL8000's, sell them and buy something that gives you what you want.

By all means do! And then convince yourself that the gross freq response aberrations and such actually sound better, as well as the mismatch in bass tuning. There's an old saying in the DIY speaker building crowd, somewhere out there is a recording that will make it sound good so this would also be a good excuse to go buy a bunch of new music in search of said recording! 😕

By the way - what is there to do if the original tweeter is defective? Just swap it over with a new identical one or do you also ne to calibrate in this case?

Thanks!

Kai

Manbearpig wrote:

By the way - what is there to do if the original tweeter is defective? Just swap it over with a new identical one or do you also ne to calibrate in this case?

Thanks!

Kai

Hi Kai,

that was my point.  My understanding is that any replacement should be calibrated.  Maybe the OP can say as he works for B&O.

Dave.

Manbearpig wrote:

By the way - what is there to do if the original tweeter is defective? Just swap it over with a new identical one or do you also ne to calibrate in this case?

Thanks!

Kai

I haven't taken a look at the 8000 service manual but there's a procedure to read the efficiency number in dB off the back of any driver you are swapping and instructions on how to use a meter and adjust the amplifier level in the BL6000 manual I have, so I'd assume it's the same. This is one thing that impresses about B&O speakers, most passive speakers have some fairly wide tolerances for drivers, after the speaker is completed it's placed on a test jig with a microphone, an impulse response test is performed, and if the response lies outside of some specified range it's pulled and corrected by changing crossover or drivers. Most speakers don't seem to have nearly as tight a tolerance as B&O has on such things.

Why do you think stuffing drivers in cabinets not designed for them, using crossovers not designed for them, will be an "upgrade?" And why do you think drivers matter that much? What do you think is wrong with the drivers B&O chose?