Everybody hates Bose. Even I think their stuff is grossly overrated. Nevertheless I bought a Companion 5 sub-box with all the electronics removed for around $20.00.
As is typical Bose, the cabinet cannot be disassembled. To access the driver the entire unit must be destroyed. My original for this was to connect a Sony 40w plate amp but now the box has actually arrived - the plan has changed. The power supply for the original amp and electronic is contained within the sealed compartment containing the driver. It almost impossible to obtain specifications for Bose equipment but the stated power consumption is 300w - which kinda makes sense. How else are you going to get anything resembling bass from a dual coil 5.25" driver?
As I already have a transformer, my new plan is to replace the missing electronics with a TPA3116D2 and a low-pass filter. For this to work I have to assume the output from the original PSU does not exceed 25v - Based your collective experience - how likely is this?
As is typical Bose, the cabinet cannot be disassembled. To access the driver the entire unit must be destroyed. My original for this was to connect a Sony 40w plate amp but now the box has actually arrived - the plan has changed. The power supply for the original amp and electronic is contained within the sealed compartment containing the driver. It almost impossible to obtain specifications for Bose equipment but the stated power consumption is 300w - which kinda makes sense. How else are you going to get anything resembling bass from a dual coil 5.25" driver?
As I already have a transformer, my new plan is to replace the missing electronics with a TPA3116D2 and a low-pass filter. For this to work I have to assume the output from the original PSU does not exceed 25v - Based your collective experience - how likely is this?
Recycling projects are my favorite. If we look at all the facts here it is likely the original Bose amp was 50x2 watts or less and probably between 12 and 24v. A DMM would tell you this, if you don’t have one your project will require luck and faith...good luck
There are a few ways to get some idea of voltage with items you might have on hand(a 12v bulb of a known brightness?) but safety and mileage will vary.
Finding an unwanted 80s mid-fi/av receiver and relieving it of its amp/ps section is another good way to power your project.
There are a few ways to get some idea of voltage with items you might have on hand(a 12v bulb of a known brightness?) but safety and mileage will vary.
Finding an unwanted 80s mid-fi/av receiver and relieving it of its amp/ps section is another good way to power your project.