Would it be possible to remove the icepower amplifier from a Beolab 7.4, making it a passive speaker?The reason is that I would like to run it of a standard 5.1 surround amplifier. That way there would not be any need for an expensive amplifier with preamp outputs.
Thank you to our Sponsors
Creating a Beovox 7.4
13 replies
Even if you separate the internal power amplifiers, I wonder how much of the low-level processing is eq.Similarly, I’ve always wondered what BL8000s would sound like without eq 😁
From the service manual it looks like the sound processing is done before the amps.
Right, so how do you think you could mimic it? Is your AV receiver that sophisticated?
Don’t have a receiver. Just researching possibilities. 🙂
Would this unit from Steve solve the problem? https://soundsheavenly.com/line-in-connection/33-power-amplifier-to-beolab-line-in-attenuated-convertor-kit.html
That is what usually is recommended in such cases.
MM
Location: Flensborg————Danmark
Of course you could rip out all the electronics.
You'll just need to know the crossover frequencies of the speaker chassis inside the Beolab 7.4 and a passive frequency crossover with matching frequencies that you can install in the 7.4 housing. Than you can use it with every external amplifier.
I guess it will be very interesting to listen for the differences of the passive version and the B&O active version.
How would one duplicate a crossover?
Would this unit from Steve solve the problem? https://soundsheavenly.com/line-in-connection/33-power-amplifier-to-beolab-line-in-attenuated-convertor-kit.html
I recommend this too. That way you can fully preserve the original sound. Plus, as the loudspeaker relies on ABL for low-end extension, you would lose a significant amount of bass in an active to passive conversion.
Location: Denmark
Human interface designer at Bang & Olufsen.
Please Log In to Reply
You must be logged in as a BeoWorld member to post replies to forum threads.
or
Join BeoWorld
Register to access the forums, reference material, and exclusive member benefits — including our monthly prize draw.
Become a Member