Hi there - this sub looks pretty decent. I bought this sub quite cheap as working.
I want to get a signal into the sub, however it will only pair under a bluetooth connection with its own compatible soundbar (which didnt come with the sale). I assume this is a bespoke bluetooth connection as I cant see the sub coming up under a list of pairable bluetooth devices. I'm not 100% sure, but this may be a JBL "Bar 500" model.
So, my question is, does the amplifier module shown here look familiar to anyone (in terms of connecting a signal into it, and ideally bypassing the bluetooth connection?)
I'd say this coud be quite tricky. However I'd like to get this running, preferbly using the onboard amp and PS modules if possible.
thanks!
I want to get a signal into the sub, however it will only pair under a bluetooth connection with its own compatible soundbar (which didnt come with the sale). I assume this is a bespoke bluetooth connection as I cant see the sub coming up under a list of pairable bluetooth devices. I'm not 100% sure, but this may be a JBL "Bar 500" model.
So, my question is, does the amplifier module shown here look familiar to anyone (in terms of connecting a signal into it, and ideally bypassing the bluetooth connection?)
I'd say this coud be quite tricky. However I'd like to get this running, preferbly using the onboard amp and PS modules if possible.
thanks!
Attachments
Did you manage to solve this? Im in the same boat as you! have not yet received the single subwoofer (JBL SB400) to try do almost the same 🙂
but i want to use a Raspberry pi, and emulate the JBL soundbar if it at all possible.
but i want to use a Raspberry pi, and emulate the JBL soundbar if it at all possible.
Hello,
This is tricky, the reasons I'm thinking of :
From what I gathered :
To successfully hack the system I would try :
The easiest way is to buy a new power amp board...
This is tricky, the reasons I'm thinking of :
- There are no datasheets for the components used in that subwoofer, they are all tailor made for JBL and you cannot find anthing
- There are no "Analog" signals before the amplificator
From what I gathered :
- The wireless module pairing is totally uknown, no one has attempted to reverse engineer it
- The output of the wireless module is an I2S (Inter-Integrated Circuit Sound) format
- The I2S signal enters a TAS5534 which converts the digital audio to a PWM signal for the class D amplifier
- The class D amplifier is a TAS5614, this one has a datasheet
To successfully hack the system I would try :
- Bypass the Wireless + TAS5534
- Find a module that converts analog to PWM
- Feed the PWM into the existing power amp
The easiest way is to buy a new power amp board...
