Recently I was given a Philips HTS6500 all in one 2.1 channel DVD home theater system. I was hopeful I could fix the fundamental problem with the system which was for some reason the system would cycle through it's various modes every minute or so. I was fortunate that a google search turned up a service manual for the thing... but in Portuguese. Well at least I can read the circuit schematics. At the end of the day I'm not sure I will be able to fix the system (though if anyone just happens to know what's wrong please let me know).
However, I thought why don't do something with the parts? The system contains an TI TAS5508-5142V6REF2 6 channel amp board. While I don't have a schematic for that board, I do have at least the TI manuals for a similar evaluation board, the 5508 chip and, thanks to the service manual, information on which interface pins are which.
So what I was hoping to do was turn this into a 6 channel class D amp. Initially I'm thinking just 6 analog in and 6 speaker out. However, I am open to suggestions for things like USB or other interfaces. I would ideally like to keep the price down as I don't have a real need for this amp as I already have a Bryston B4 as my "real" amp. This would be nice as the Bryston doubles as a space heater and is noticeable on the electric bill 😱! Still I think it will be a fun project.
In addition to the TI board, I have the power supply board which has available 5 and 12 volt lines.
Thanks for any and all help!
However, I thought why don't do something with the parts? The system contains an TI TAS5508-5142V6REF2 6 channel amp board. While I don't have a schematic for that board, I do have at least the TI manuals for a similar evaluation board, the 5508 chip and, thanks to the service manual, information on which interface pins are which.
So what I was hoping to do was turn this into a 6 channel class D amp. Initially I'm thinking just 6 analog in and 6 speaker out. However, I am open to suggestions for things like USB or other interfaces. I would ideally like to keep the price down as I don't have a real need for this amp as I already have a Bryston B4 as my "real" amp. This would be nice as the Bryston doubles as a space heater and is noticeable on the electric bill 😱! Still I think it will be a fun project.
In addition to the TI board, I have the power supply board which has available 5 and 12 volt lines.
Thanks for any and all help!
Really don't know enough about the card to answer your question confidently. If it's anything like the TAS5508 eval board then you need to feed it I2S audio and a master clock, and control some registers inside the thing via an I2C interface.
The TAS5508 eval board datasheet describes an interface card which seems to provide those signals, which you might be able to obtain and use - but I haven't looked any further into that card and what its capabilities are.
If that card isn't appropriate or desirable, you'll require a microcontroller or Arduino type of setup to manipulate the control registers in the '5508. If you want analog inputs, you'll have to add a 6ch ADC. If you want USB, you'll have to add some sort of USB-I2S converter (there's a few around - I know some guys are playing with XMOS chips in the Digital Source section of the forum, don't know where they are with it..)
Where you go with it really depends on what your electronic capabilities are... but I'd start by tracing out as much of the card as you can and getting a schematic together. Don't worry about part values, just figure out what parts are on the card, what the connectors are and how everything's hooked together.
The TAS5508 eval board datasheet describes an interface card which seems to provide those signals, which you might be able to obtain and use - but I haven't looked any further into that card and what its capabilities are.
If that card isn't appropriate or desirable, you'll require a microcontroller or Arduino type of setup to manipulate the control registers in the '5508. If you want analog inputs, you'll have to add a 6ch ADC. If you want USB, you'll have to add some sort of USB-I2S converter (there's a few around - I know some guys are playing with XMOS chips in the Digital Source section of the forum, don't know where they are with it..)
Where you go with it really depends on what your electronic capabilities are... but I'd start by tracing out as much of the card as you can and getting a schematic together. Don't worry about part values, just figure out what parts are on the card, what the connectors are and how everything's hooked together.
Thanks for the reply. That was basically what I was afraid of. The system is similar to the eval board but I think some of the functions of the eval board are removed as they weren't needed for the application. I was hoping this could quickly be turned into a nearly free multi-channel amp but it looks like the cost is greater than getting a kit from Parts Express. I think I will check to see if the power supply can be triggered on or if I need to create an interface for it as well.
- Status
- Not open for further replies.