Hey all I'm new here and have several questions about my tiny sound system project. It started as wanting to make a tiny bluetooth subwoofer which I was able to do with a 2.1 amp. Now I want to dig a little deeper and have two separate cabinets for the sub and full range and have both cabs be wireless.
In my musings I found out about TWS which seems to let you connect two Bluetooth devices to the same source. I can't seem to find the chips for this function, but I bought a few cheap bluetooth speakers with this feature to get started. My first question is can I purchase these modules somewhere?
The next question I have is will a basic RC low pass filter work for the sub enclosure? My initial thought was to go straight from the amp > rc circuit > sub, and also wondered if I can feed the first amp to a 2nd amp and have 2 RC circuits with the 2nd amp between.
For the full range enclosure I wanted to run the tweeter and full range off separate amps in a similar fashion. Feeding the TWS signal into the first amp and sending out a signal to both the full range speaker and second amp.
I appreciate anybody who can help point me in the right direction.
In my musings I found out about TWS which seems to let you connect two Bluetooth devices to the same source. I can't seem to find the chips for this function, but I bought a few cheap bluetooth speakers with this feature to get started. My first question is can I purchase these modules somewhere?
The next question I have is will a basic RC low pass filter work for the sub enclosure? My initial thought was to go straight from the amp > rc circuit > sub, and also wondered if I can feed the first amp to a 2nd amp and have 2 RC circuits with the 2nd amp between.
For the full range enclosure I wanted to run the tweeter and full range off separate amps in a similar fashion. Feeding the TWS signal into the first amp and sending out a signal to both the full range speaker and second amp.
I appreciate anybody who can help point me in the right direction.
Since your questions are primarily about crossovers, I will move this to the Multi-Way section where you should get more help.
Don't feed the output of an amplifier to the input of another amplifier.
With some amplifiers there would even be damage done.
It's much better to use a Y connector before the amplifiers, and filter just one of the Y outputs.
With some amplifiers there would even be damage done.
It's much better to use a Y connector before the amplifiers, and filter just one of the Y outputs.
This is good to know. The only way I could achieve this is with a TWS receiver before the amps. As it is now I only have these salvaged TWS receivers built into a 5W amp.
I suppose I could forego the TWS in favor of something like the AmpMe app which let's me connect to two Bluetooth devices and just have a receiver built into each cab. Then I could split the signal like you suggest before the amps.
You mention running the output of one of the amps into another. What in and output are you trying to get from each of them?
Also the RC idea is not preferred after the amp, because it is is less versatile than an LC filter, and wastes power in the power section for no particular benefit.
Also the RC idea is not preferred after the amp, because it is is less versatile than an LC filter, and wastes power in the power section for no particular benefit.
The first amp is taking bluetooth input and powering a full range speaker and a 2nd amp which would power the tweeter. I think the above recommendation of a Y split is what I will do instead, and split a TWS receiver input into 2 amps which power each speaker independently. Same for the sub box I will do a TWS receiver into a single amp. I am also wondering how this $10 bluetooth speaker can have a TWS module in it and I cant find just the module for less that $5.
For the RC circuit what if I put it between the receiver and the amp?
Whether you put it between the receiver or bluetooth output and the amp, there are engineering issues to consider.
For example I would consider the source and load resistances, their interaction with your filter, and your filter's interaction between channels.
For example I would consider the source and load resistances, their interaction with your filter, and your filter's interaction between channels.