Converting Beolab LCS 9000 to passive speaker powered by MCL2P

14 replies
BE
Offline
BeoIce
BronzeFounder
Posted April 20, 2016 at 19:12 GMT
#2204535

Hello all,

I would like to convert a Beolab LCS 9000 to a passive center speaker powered by a MCL2P amplifier for my surround setup.

As there is not enough space between my tv and the cabinet below, Beolab LCS9000 is the only speaker that will fit, technically and optically. BL 7 speakers are no option, because their depth is too high. It won't look very well under the tv if it is mounted 10cm from the wall, but BL7's front is about 20cm from the wall.

Converting Beolab LCS 9000 from a masterlink speaker to a powerlink speaker will work, but it includes very much technical knowledge and massive modifications of the internals.

I know of the almando devices, which converts the speaker to a powerlink speaker, but it's expensive and would create noise in the signal way.

As I currently have a B&O ir-eye between my tv and the cabinet below, I would like to integrate the internals of this ir-eye into the LCS 9000 case, right behind the display where normaly the dot matrix display is integrated.

Is there anybody out there who has previously done such passive modification and can help out with the required crossovers or is able to build a passive crossover which suits LCS 9000 well ?

Any help or ideas are welcome :-)

 

Kind regards

Martin

B(
Offline
BEOVOX141 (archived2)
Bronze
Posted April 21, 2016 at 19:56 GMT
#2204536

Hi

I believe you can use the MCL connector directly..

No need to tear the speaker apart 😕

Beobuddy
Offline
Beobuddy
BronzeFounder
Posted April 22, 2016 at 19:24 GMT
#2204537

BeoIce wrote:

 

Converting Beolab LCS 9000 from a masterlink speaker to a powerlink speaker will work, but it includes very much technical knowledge and massive modifications of the internals.

 

BeoIce wrote:

Is there anybody out there who has previously done such passive modification and can help out with the required crossovers or is able to build a passive crossover which suits LCS 9000 well ?

 

Which one do you think is more work? The drivers inside the BL 3500 has a well balanced active filter. Converting this to a passive 2 way filter is possible, but it will never sound as the original. A passive filter will send the complete frequency spectrum at the woofers where the active version has a adapted filter for the drivers. So, no overload caused by lower frequencies.

I've converted several BL3500's to powerlink with just some minor changes. The advantage is that the MCL socket is the same as powerlink. The only thing you have to do is to send the audio to the right pins (and bypass the audiocontrol circuit) and take the powerup signal on pin4 to  trigger the power for the BL3500. Leave the rest as it is. I have to look for my notes I made.

Still, some soldering skills are needed in both.

Location: Utrecht

Quite a challenge to achieve "Less is More" while having the Beovirus.
T(
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Teletom (archived2)
Bronze
Posted May 11, 2016 at 09:42 GMT
#2204538
Beobuddy wrote:

I've converted several BL3500's to powerlink with just some minor changes. The advantage is that the MCL socket is the same as powerlink. The only thing you have to do is to send the audio to the right pins (and bypass the audiocontrol circuit) and take the powerup signal on pin4 to trigger the power for the BL3500. Leave the rest as it is. I have to look for my notes I made.

Still, some soldering skills are needed in both.

I have a BL3500 Mk2 and would like to convert it to Powerlink. I will use it with Playmaker or Essence mk2. Would like to know which modifications have to be done. Thanks in advance.

Teletom

JS
Offline
js
Bronze
Posted May 13, 2016 at 13:12 GMT
#2204539

Beobuddy wrote:

I've converted several BL3500's to powerlink with just some minor changes. [...] I have to look for my notes I made.

Hi Beobuddy, I would also be interested in the conversion to PowerLink. Great if you are willing to share your notes, much appreciated in advance, many thanks :-)

JS
Offline
js
Bronze
Posted May 13, 2016 at 13:14 GMT
#2204540

Beobuddy wrote:

I've converted several BL3500's to powerlink with just some minor changes. [...] I have to look for my notes I made.

My post was moderated when I replied to Beobuddy that I am also interested in the PowerLink conversion and that I thank him in advance for sharing his notes. Anyway, I will just try again :-)

JS
Offline
js
Bronze
Posted May 13, 2016 at 13:15 GMT
#2204541

trying to respond but all my posts go to moderation

JS
Offline
js
Bronze
Posted May 13, 2016 at 13:18 GMT
#2204542

Beobuddy wrote:

I've converted several BL3500's to powerlink with just some minor changes. [...] I have to look for my notes I made.

Still, some soldering skills are needed in both.

Shall I try again with other words: looks like a great solution, would be great to know the details, thanks a lot :-)

X(
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xps60 (archived2)
Bronze
Posted May 20, 2016 at 21:57 GMT
#2204543

I would be massively grateful if you could share the modifications of the Beolab 3500 to Powerlink + trigger (pin 4). No problem if some soldering is required. Thanks in advance!

Mart

L(
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lelunde (archived2)
Bronze
Posted April 14, 2019 at 10:58 GMT
#2204544

I second this!

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