Should I run 1 large 12v battery with a dc-dc 24v converter for the amp, or 2 smaller 12v batteries in series for 24 volts and dc-dc step down converter to 12 volts for the bluetooth (and phone charger)?
Basically, what would use less energy, a step up converter or a step down converter?
If a step down would use less energy (and give me longer radio playing time), is there any draw backs to using a step down converter?
I only want to use 1 charger for the boom box, so three batteries (2 for amp, and 1 for 12v rail) is out.
Charge your 12V batteries in parallel and operate in series.
Use a 4PDT switch.
Use a stepdown dc-dc for the BT...V7812-500
V7812-500 Digi-Key
🙂
Charge your 12V batteries in parallel and operate in series.
Use a 4PDT switch.
Use a stepdown dc-dc for the BT...V7812-500
V7812-500 Digi-Key
🙂
DUG: sorry for the elementary questions, but I am very new at this.
Would this step down work for the 12v rail: LM2596 DC DC Step Down Adjust Power Supply Module | eBay
You said to charge the batteries in parellel, but operate in series, how would the wiring diagram look for that?
Last thing is the BlueTooth. The bluetooth has RCA outs. How would I hook up the BlueTooth and a 3.5mm to the amp? The amp has a set of RCA in.
Forgot about the switch. Do I really want a Double Throw switch? I would want the 24v amp and the 12v bluetooth on at the same time. So, wouldnt a single throw switch be good? If I am wrong, how would the switch be wired?
DUG:
...
Would this step down work for the 12v rail: LM2596 DC DC Step Down Adjust Power Supply Module | eBay
...
Yes
Forgot about the switch. Do I really want a Double Throw switch? I would want the 24v amp and the 12v bluetooth on at the same time. So, wouldnt a single throw switch be good? If I am wrong, how would the switch be wired?
How are you going to charge your batteries if you use two 12V in series for 24V?
If you use two separate chargers then you are good to go.
ok, so here is the new diagram of how i am thinking of wiring my set up. How does this look to everyone?
Will a simple single-throw single-pole switch work with this layout?
Can i just splice the bluetooth out and 3.5mm together and sent that one wire to the amp input? Or do i need to wire them up some different way? The amp only has 1 set of RCA inputs.
I am planing on using two 12v 5ah batteries. The amp calls for 24v "6amp regulated" input power. How many amps will my 24v set up be sending to the amp? Do i really have to regulate the power to the amp?
EDIT: In the future, if I wanted to increase the batteries to two 12v 9ah batteries, how many amps would this set up be sending to the AMP?
Will a simple single-throw single-pole switch work with this layout?
Can i just splice the bluetooth out and 3.5mm together and sent that one wire to the amp input? Or do i need to wire them up some different way? The amp only has 1 set of RCA inputs.
I am planing on using two 12v 5ah batteries. The amp calls for 24v "6amp regulated" input power. How many amps will my 24v set up be sending to the amp? Do i really have to regulate the power to the amp?
EDIT: In the future, if I wanted to increase the batteries to two 12v 9ah batteries, how many amps would this set up be sending to the AMP?

Last edited:
DC DC Converter Boost Buck Step Up Step Down Voltage Module 3 5 28V to 1 25 26V | eBay
Here is another, cheaper step down, but its ratings may not be high enough. What is my input amp rating to my step down converter?
Maximum input current 3A.
Maximum output 3A.
Rated input 1A, Output 1A.
Here is another, cheaper step down, but its ratings may not be high enough. What is my input amp rating to my step down converter?
Maximum input current 3A.
Maximum output 3A.
Rated input 1A, Output 1A.
ok, so here is the new diagram of how i am thinking of wiring my set up. How does this look to everyone?
Will a simple single-throw single-pole switch work with this layout?
Can i just splice the bluetooth out and 3.5mm together and sent that one wire to the amp input? Or do i need to wire them up some different way? The amp only has 1 set of RCA inputs.
I am planing on using two 12v 5ah batteries. The amp calls for 24v "6amp regulated" input power. How many amps will my 24v set up be sending to the amp? Do i really have to regulate the power to the amp?
EDIT: In the future, if I wanted to increase the batteries to two 12v 9ah batteries, how many amps would this set up be sending to the AMP?
![]()
Looks OK to me.
- Status
- Not open for further replies.
- Home
- Amplifiers
- Class D
- Can I wire a 24v amp and 12v blue tooth like this?