hi
can you tell me if have been told that you can modify your Samsung q990d sound system
I want to use the normal q990d subwoofer plus you can add a additional 2nd subwoofer
from a different brand
utube shows a guy using a klipsch subwoofer with the system
or a svs sub either a svs pb2000 or a svs pb3000
with the samsung q990d subwoofer as well
can this definitely work
if so can you please so kindly put me in touch with a samsung technical expert who can modify my samsung q990d for me so I can use two subwoofers instead of the normal just q990d sub
need your help and technical support
or can you please so kindly tell me any contact number on who can modify the system for me
it would help me out greatly
if I can get more low end bass from my system
and why don't samsung create the next soundbar with 2 subwoofer outputs
need your expertise asap thanks kindly from marcus
I'm in the United kingdom postcode nn8 2jr
can you tell me if have been told that you can modify your Samsung q990d sound system
I want to use the normal q990d subwoofer plus you can add a additional 2nd subwoofer
from a different brand
utube shows a guy using a klipsch subwoofer with the system
or a svs sub either a svs pb2000 or a svs pb3000
with the samsung q990d subwoofer as well
can this definitely work
if so can you please so kindly put me in touch with a samsung technical expert who can modify my samsung q990d for me so I can use two subwoofers instead of the normal just q990d sub
need your help and technical support
or can you please so kindly tell me any contact number on who can modify the system for me
it would help me out greatly
if I can get more low end bass from my system
and why don't samsung create the next soundbar with 2 subwoofer outputs
need your expertise asap thanks kindly from marcus
I'm in the United kingdom postcode nn8 2jr
You could go and ask the YouTube guy how he connected his Klipsch subwoofer. I expect he would be more than happy to assist a fellow subwoofer enthusiast. I tried to find some frequency response specifications for the Q990D system, but was unsuccessful. Not even the user guide provided any such information. The power capability of the subwoofer seems very low, being about 20W, which is hardly subwoofer territory if low-frequency extension is needed. In any case, an 8-inch driver in a "subwoofer" enclosure seems to be limited by design. Hence, I can see why you'd want at least an SVS PB2000 instead.
I found that YouTube video, by NH-Tech, which indicates that you need to open up the Samsung subwoofer unit to get at the underlying electronics. That requires some care, as there are likely to be dangerous voltages across some of the circuit components!
The NH-Tech video goes on to connect some speaker wires to the 8-inch driver's terminals, feeding those wires out of the port. These wires can then be connected to the high-level speaker inputs of a subwoofer that includes that type of connection. Keep in mind that the audio signal on those wires is already low-pass filtered, which means that the extra subwoofer should have its filtering either switched off or set to the maximum possible frequency.
When connecting the second subwoofer you will potentially have no way of controlling time delay, so I'd suggest that it be placed as close as possible to the Samsung subwoofer. That way their outputs will complement each other as much as possible. An issue that I can see is that the second subwoofer will have more low-frequency extension, so you will end up with a stepped response, which will need adjusting.
I've created a simulation in VituixCAD of two vented-box subwoofers connected as you plan to do, and the component diagram is shown below:
If the subwoofer "sensitivities" are identical, the summed response will look like the following:
As can be seen above, we have a stepped low-frequency response. The two subwoofers are summing between 50Hz and 150Hz, while below 50Hz we are relying on the extended low-frequency output of the add-on subwoofer.
To reduce the size of the step, we need to reduce the level of the Samsung subwoofer while simultaneously increasing the level of the add-on subwoofer. For example, if we increase the level of the add-on subwoofer by 6dB while reducing the level of the Samsung subwoofer (via its remote control) by 6dB, we get the following result:
It is evident that a much flatter response is now obtained. This little example simulation indicates why this add-on subwoofer approach can work.
It might be worth considering relying on just one subwoofer: the add-on subwoofer. That would require replacing the Samsung subwoofer driver with a 50-ohm ≥20W high-power resistor, and connecting those cables just as before. That way you'd have only one good, high-performance subwoofer in the system, rather than relying on some acoustic output of likely lesser quality from the Samsung subwoofer. As you have limited control of the interactions, that could be a useful approach to take.,
I found that YouTube video, by NH-Tech, which indicates that you need to open up the Samsung subwoofer unit to get at the underlying electronics. That requires some care, as there are likely to be dangerous voltages across some of the circuit components!
The NH-Tech video goes on to connect some speaker wires to the 8-inch driver's terminals, feeding those wires out of the port. These wires can then be connected to the high-level speaker inputs of a subwoofer that includes that type of connection. Keep in mind that the audio signal on those wires is already low-pass filtered, which means that the extra subwoofer should have its filtering either switched off or set to the maximum possible frequency.
When connecting the second subwoofer you will potentially have no way of controlling time delay, so I'd suggest that it be placed as close as possible to the Samsung subwoofer. That way their outputs will complement each other as much as possible. An issue that I can see is that the second subwoofer will have more low-frequency extension, so you will end up with a stepped response, which will need adjusting.
I've created a simulation in VituixCAD of two vented-box subwoofers connected as you plan to do, and the component diagram is shown below:
If the subwoofer "sensitivities" are identical, the summed response will look like the following:
As can be seen above, we have a stepped low-frequency response. The two subwoofers are summing between 50Hz and 150Hz, while below 50Hz we are relying on the extended low-frequency output of the add-on subwoofer.
To reduce the size of the step, we need to reduce the level of the Samsung subwoofer while simultaneously increasing the level of the add-on subwoofer. For example, if we increase the level of the add-on subwoofer by 6dB while reducing the level of the Samsung subwoofer (via its remote control) by 6dB, we get the following result:
It is evident that a much flatter response is now obtained. This little example simulation indicates why this add-on subwoofer approach can work.
It might be worth considering relying on just one subwoofer: the add-on subwoofer. That would require replacing the Samsung subwoofer driver with a 50-ohm ≥20W high-power resistor, and connecting those cables just as before. That way you'd have only one good, high-performance subwoofer in the system, rather than relying on some acoustic output of likely lesser quality from the Samsung subwoofer. As you have limited control of the interactions, that could be a useful approach to take.,
hi
thank you for explaining to me
can you wore it up for me
or do you no anybody i can co tact to do the wiring setup foe thanks kindly
I await your response thanks?
thank you for explaining to me
can you wore it up for me
or do you no anybody i can co tact to do the wiring setup foe thanks kindly
I await your response thanks?