I am planing in making a boombox and i am really curious in whether a stereo(two drivers) boombox is much better tha a mono one, given the fact that stereo seperation and imaging isnt really a thing if you have two drivers placed so close to each other. More over having two seperated cabinets means less volume for each driver in a given footprint compaired to using the full volume of the boombox for a single maybe larger driver. Finaly ypu get minimal spl enchancment from the two sound sources especialy sience you are using more power to drive two drivers instead of one, something really important sience we are talking about a portable battery powered speaker where endurance is of utmost importance. What's your take?
You talk of two smaller woofers vs one larger. Here I have found specs on two commonly available 8 ohm woofers.
The first is 6.5" and the second is 8". Both have fs and Qts around 35Hz and 0.35, and the smaller ones have Vas half that of the larger. This means both options will give a Qtc of around 0.7 at 70Hz working into 12litres.
The sensitivity of the 6.5" drivers is 86dB and of the 8" is 89dB. Since the 6.5" would be used as a pair, they will give 92dB, but will also use 3dB more power.. so dial it back by 3dB.
Each option gives you the same sound out for the power in, in the same volume for the same response.
The first is 6.5" and the second is 8". Both have fs and Qts around 35Hz and 0.35, and the smaller ones have Vas half that of the larger. This means both options will give a Qtc of around 0.7 at 70Hz working into 12litres.
The sensitivity of the 6.5" drivers is 86dB and of the 8" is 89dB. Since the 6.5" would be used as a pair, they will give 92dB, but will also use 3dB more power.. so dial it back by 3dB.
Each option gives you the same sound out for the power in, in the same volume for the same response.
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I guess I should have expected that. OK the volume and the power consumption is the same but what about more practical reasons. It's more difficult to construct a stereo box compared to a mono, at least for me. Is having stereo sound really a advantage? In my point of view the biggest throwback with mono is the signal. Since every sound source is stereo nowadays i don't see how it's going to be made in stereo without loosing parts of the signal.
Sure but, have you see those old humongous boomboxes with a single 8" woofer?
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All the Bluetooth amp modules I've come across are stereo. You could have speakers on opposite sides of the enclosure for trendy 360 deg coverage if you don't fancy stereo speakers too close together for any separation!
