BL3 "broken" tweeter; much quieter than BL9 !

6 replies
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LennartMenzel (archived2)
Bronze
Posted February 1, 2018 at 05:27 GMT
#2101426

I have had a pair of BL3 with BS2300 in my bedroom and BL9 with BS9000 in the living room for quite a while now. 

After buying a BS3000 with a pair of BL6000 as rear speakers (simply adding a 2nd Stereo system to the living room and feeding it with the rear channels of the sound) I´ve been fiddling around with different options on how to set the speakers up.

When i had a BL3 as center speaker i noticed that it was much quieter than the BL9, even when "giving it the same sound" as one of the BL9.

So i put the BL3 and BL9 as a kind of "couple" stereo system with 2 of each kind for each side and hooked the 3s through the 9s to the BS9000 and turning them on/off in all possible ways to listen to the same musical pieces.

The difference is enourmous. It almost appeared the tweeters on the BL3 were off. I checked by squatting in front of them and covering the mids - they aren´t. I use fully wired PL cables everywhere - the service manual for the BL3 says to use MK3 semi balanced cables; could this be a problem ?

tl;dr: How can i check wether the tweeters are working correctly ? 

BL3 Type 6892 Serial: 17xxx14

BL Type 6217 Serial: 22xxx05

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olvisab (archived2)
Bronze
Posted February 1, 2018 at 06:50 GMT
#2101427

hello

 

I use  bl3, bl9 as surround speaker on a set up with beolab 5 at front. They are connected to a beovision not a beosound. 

I use the same powerlink mk3 cable for the bl3 and 9 with several powerlink splitters.

For stereo listening I select speaker 4, so the sound goes to every speaker at the same volume level.

I didn't notice any issue concerning the sound coming from the tweeter of the bl3 or bl9.

It is not rare to have a defect tweeter on a bl9 or bl5, should be also the case with bl3.

 

 

 

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olvisab (archived2)
Bronze
Posted February 1, 2018 at 06:53 GMT
#2101428

I said that I use the same mk3 powerlink cable for the bl3 and bl9, that's not perfectly correct, as I use several cables (long distance) mk2 and mk3. 

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LennartMenzel (archived2)
Bronze
Posted August 31, 2020 at 19:44 GMT
#2101429

It has been two years since the post and i have moved on to Beolab 5 as my main speakers. I put the 3s right next to the 5s and set up a 1:1 comparison with similar level and on the fly switching with spotify. 

Both Beolab 3 sound muddy and lack so so much detail. It is the same thing as with the Beolab 9.

 

I have come to the conclusion that the speakers simply sound bad IN COMPARISON  to Beolab 5 and 9. Can someone confirm this who has made 1:1 comparisons between either 5 and 3 or 9 and 3 ?

Maybe some other opinions?

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Esax (archived2)
Bronze
Posted September 1, 2020 at 11:47 GMT
#2101430
Check the tweeters. They can be broken even though they are still playing.
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LennartMenzel (archived2)
Bronze
Posted September 1, 2020 at 11:54 GMT
#2101431

You mean by measuring the impedance as instructed in the service manual?

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