BGW 750B output modules

[bonesbiggis]

Gratulation and enjoy


its a great amp design,

have using in my apartment 750B with Infinity kappa and Infinity studio monitor, ypu can feel bass eahrtquake in your bathroom

have rebuild during Covid-19 lockdown 750B VU Meter for Class D

hi
do you have any printed VU meter pcb laying around for sale ? plans to add vu meters to my 750C 🙂
or if you did use kikad you can send me the files to.

 

[bonesbiggis]

made an copy of the bgw 750B vu led pcb. and rebuilding my 750C to 750B let me know if you want to order a pcb. Any one know what forward voltage and current to use if i don want them to light to much or to little.

R527 = 1.5k 2W wire wound

 

[Robbie44]

Hello, I need a bit of help. I do not know how to connect the wires to my meter board. Any pictures?

 

[Audio1Man]

750 B-C CHASSIS WIRING. See lower left for METER Connections.
Duke

 

[Robbie44]

Hello, yes, I can see this, but what I mean is the meter board I have is a very early one, and it's not the one in the service manual. That one shows 2 IC control chips, and mine is not like this. I was hoping had a photo, but thanks, Duke, for the response.

 

[anatech]

Hi Robbie,
Narrow it down. You'll find a common (ground) and a supply. Probably positive. You may have a negative supply, but for sure a signal from each output section. Look at the board, you'll clearly see where common and supplies go.

 

[Robbie44]

Ok, I'll give it a try.... Thank you for the support.

 

[Robbie44]

hello Nmos,
as always you realize great CI. is it the same format that can replace the original on the map without having to change anything or are there any connections or other things to do to place it in place of the original one, because the meter view map is in 2 rooms connected by pine trees.

Phil

Hello is possibly to get a picture of the back of the VU meter I need to find out how to wire mine up

 

[Robbie44]

Can anyone post a pick of the where the wires connect to the vu meter board

 

[bonesbiggis]

robbie44 maby this helps out

 

[Robbie44]

Hello, to anyone having a similar problem, here is the wires onto the VU meter.

 

[bonesbiggis]

Did take a look at the relay board to day most of the 1N4004 did reed about 30Mohm reversed.

I think I was 3 that was holding tight.

It's an old amp so if you (renovets)
This amp I recommends to check the diodes.

Tomorrow will the VU meter PCB arive so hopefully I get the amp up an running this week.