Connecting three drivers to one amp

[FatCookies]

I'm building a boombox which consists of 2 full range and 1 midbass "subwoofer" drivers. Since space/power consumption are restricted I'd prefer to run everything off one amplifier.

All three speakers are rated at 4 ohms and would like to use this amplifier since I already have one lying around.

The amp is in BTL and the case claims you should use 8-16 ohm speakers - would it be safe to wire the two full range speakers to one channel in series and then run the midbass from the other channel?


If not, what suggestions do people have for running this kind of configuration in a boombox scenario?

 

[4392Viper]

Actually, you can wire the full-ranges in series and then parallel with your woofer, but don't bother yourself. The final result is not so good and will damage your amp gradually.
Go with one of these and you're good to go:
Bluetooth 4.0 Bluetooth receiver amplifier board amplifier TPA 3116/3118-in Amplifier from Consumer Electronics on Aliexpress.com | Alibaba Group

One has used it perfectly:

DIY 2.1 Bluetooth Speaker Build - CANTILEVER STYLE


Integrated receiver and amplifier-filter 😱
2.1 channel output 😱
Low power consumption 😱
Powerful output 😱

 

[FatCookies]

You linked the wrong amplifier!

Although it's rather wasteful I just decided to purchase another similar amp and will run the full ranges with this one and the one midbass with the amp I linked earlier.
Not ideal, but it's cheap and cheerful 🙂

 

[wacotech]

I know you can drive 3 x 8 ohm loads on one channel of a good quality (old school) amp like a Crown, no problem; many of the old Turbosound systems were run like this, you actual get more dB's per $ doing this also.

The more modern amps or cheaper ones i wouldn't know if it works good or not.