Hi all.
This may sound a slightly odd question and I am still a bit of noob. Been experimenting with some speakers for a home Bluetooth audio build. These speakers are being used with a Dayton KAB30 amplifier.
I have two of these speakers in a large rectangular box that has been retrofitted from a storage box. I have set these up and they play fine but I have noticed that when I gently hold one of the drivers (stop it from moving) the power and particularly bass response improves more then significantly when the one driver is doing most of the work.
What I am curious about is why this is so? I assume because the volume of air that the single speaker is moving has increased while the other speaker is inhibited from moving? Or is it something else that is coming into play that I don't understand?
I have set these up with a ported arrangement (very basic calculations) and certainly have noticed an improvement but nowhere near then the in the above scenario.
Any insight would be greatly appreciated.
This may sound a slightly odd question and I am still a bit of noob. Been experimenting with some speakers for a home Bluetooth audio build. These speakers are being used with a Dayton KAB30 amplifier.
I have two of these speakers in a large rectangular box that has been retrofitted from a storage box. I have set these up and they play fine but I have noticed that when I gently hold one of the drivers (stop it from moving) the power and particularly bass response improves more then significantly when the one driver is doing most of the work.
What I am curious about is why this is so? I assume because the volume of air that the single speaker is moving has increased while the other speaker is inhibited from moving? Or is it something else that is coming into play that I don't understand?
I have set these up with a ported arrangement (very basic calculations) and certainly have noticed an improvement but nowhere near then the in the above scenario.
Any insight would be greatly appreciated.
Did you size the volume and port for two drivers based on simulation? You need to double the volume and use two ports for the bass response to be as calculated. If not, then perhaps holding one turns box into correct volume and bass improves. Or maybe you have phase of one driver reversed so bass cancels. You would only hear music above 500Hz or so and it would sound very thin if this were the case. Try adding a divider so each has its own chamber and port.
I would guess they're out of phase.
Or one is broken/has a broke cable and is being driven by the other.
Or one is broken/has a broke cable and is being driven by the other.
I didn't calculate anything because the box is retrofitted. Basically a cool old wood box that I have fitted a new box made of MDF inside with a front baffle.
I never thought about phase issues. Thats interesting and I will take a look. The amp is a Sure Bluetooth TPA3116 and I have seen the odd thing about some people saying that the +/- connectors are actually the other way around so I wonder if that is the case.
I will check all the connections as well. Thanks for the input all. Much appreciated.
I never thought about phase issues. Thats interesting and I will take a look. The amp is a Sure Bluetooth TPA3116 and I have seen the odd thing about some people saying that the +/- connectors are actually the other way around so I wonder if that is the case.
I will check all the connections as well. Thanks for the input all. Much appreciated.
AMAZING! 😀 Thanks so much XRK971. I checked and I had reversed one of the speaker connections. Completely improved.
Can be so simple sometimes and I didn't even think about that.
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