Beovision Avant amplifier + speakers

16 replies
BL
Offline
Blokkenpiloot
Bronze
Posted September 29, 2014 at 16:54 GMT
#2201081

Hi all.

I just removed the speakers + crossover + amplifier units from a beovision Avant.
I'd like to buy a power source for these amplifiers. But i don't have any clue how much Volts and Amperes it should provide.

In the picture are the connections shown. Is there anybody who knows which pin on the left side is + and - for the power supply? Or isn't it the left connection?

Also There are 4 pins on the right (audio?) Connector. Can someone tell me which pin is which? (left/right/ground/??).

This is the amplifier chip: http://www.qrz.ru/reference/micro/analog/stk4122ii.pdf

Thanks,

Aymeric 

Beobuddy
Offline
Beobuddy
BronzeFounder
Posted September 30, 2014 at 08:58 GMT
#2201082

Here:

 

/forum/general-discussion-and-questions/penta-ii-not-going-into-standby

And:

 

Location: Utrecht

Quite a challenge to achieve "Less is More" while having the Beovirus.
BL
Offline
Blokkenpiloot
Bronze
Posted September 30, 2014 at 14:37 GMT
#2201083

Thanks! That is amazing :)

 

Bedankt beobuddy dit is precies wat ik zocht :)

P(
Offline
Pearton_ante (archived2)
Bronze
Posted March 12, 2019 at 09:29 GMT
#2201084

Hi

 

I am looking to do the same thing.

How did it work out for you?

Did it work?

 

Cheers

Andreas

N(
Offline
nlanks (archived2)
Bronze
Posted April 8, 2019 at 19:14 GMT
#2201085

I looked at this too but gave up. Also thought about using the Beocreate amp instead, but again never got round to it.

DU
Offline
dudu_mec
Bronze
Posted May 18, 2019 at 20:05 GMT
#2201086

Finally managed to get a clear sound from a project like this...

Was given the amplifiers and speakers from an old avant

With the help of beobuddy diagram i got a suitable transformer from an online store here in europe and a power supply pcb from eBay. If it's not against forum rules i'll post the links to where i bought them.

 

https://youtu.be/6dL2h1SfU8c

Any comments on circuit are appreciated.

 

B(
Offline
BEOVOX141 (archived2)
Bronze
Posted May 18, 2019 at 22:37 GMT
#2201087

Hi Duarte.

Nicely done, complete with the classic B&O aluminum trim! It goes to show that one mans trash is another mans treasure!

All about attitude and imagination!

You now basically have a Beolab 4000, since it really is-  the Avant speaker.

I dont see any fuse anywhere, which really is mandatory for all the right reasons! The rest is pretty much by the book! You even included a left, right switch!

To bad you already cut the big hole for the speakers, the extra volume you have available could properly have improved the system.

How is the sound? You actually put a ported system into a sealed box, what happens when you close the box ?

Anyway,-  Congratulations on a speaker for life 🤩

R(
Offline
rajeegeorge (archived2)
Bronze
Posted July 8, 2019 at 21:42 GMT
#2201088

dear link 

You have shown a great mod the project im in but unfortunately I cannot understand the Dutch

 

Kindly translate in English, thanks in advance 

link

R(
Offline
rajeegeorge (archived2)
Bronze
Posted July 8, 2019 at 21:58 GMT
#2201089

please translate the schematic from dutch to English or send me a mod you have done to work 

to my email please 

rajee20042001@yahoo.com  

F(
Offline
frankiechiu168 (archived2)
Bronze
Posted February 26, 2021 at 23:34 GMT
#2201090

Nice Job! I just got the same modules from my fd TV. how many AC Volt output of the transformer you using to get the DC +- 20v? thanks share that!

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