Hi folks, I'm looking for a 2.1 digital amplifier that will let me select between two different RCA (or 3.5MM) inputs.
Must also have bass blocker for the stereo speakers and adjustable subwoofer output/frequency.
Wanting to stay under $100.
Any suggestions?
I found the Dayton Audio DTA-2.1BT2 but nothing else so far.
EDIT: I didn't find anything else in my price range, so I ordered the Dayton.
Must also have bass blocker for the stereo speakers and adjustable subwoofer output/frequency.
Wanting to stay under $100.
Any suggestions?
I found the Dayton Audio DTA-2.1BT2 but nothing else so far.
EDIT: I didn't find anything else in my price range, so I ordered the Dayton.
Last edited:
The DTA-2.1BT2 doesn't seem to have a high-pass filter (i.e., bass blocker) that is applied to the outputs going to the stereo speakers. The 2nd-order low-pass filter also seems to have a slower attenuation rate than might be needed. Your best option might be to just buy a low-cost 5.1 AV receiver, which would at least have the appropriate bass management system on board. A run-out model might get close to your $100 upper limit.
Hmm, thanks for pointing out the lack of high pass on that Dayton amp. I hadn't noticed!
This is for a computer desk, so I need something small.
Since it's not critical, I guess I can just add bass blocker caps if necessary.
This is for a computer desk, so I need something small.
Since it's not critical, I guess I can just add bass blocker caps if necessary.
I now understand your application. A capacitor used as a 1st-order high-pass filter can potentially work moderately well. How well it does its intended job will depend on the driver impedance curve. If there is a peak in the impedance near the frequency where you wish to apply the high-pass filter, there may be a bit of interaction between the capacitor and that impedance peak, which may cause a roll-off that isn't smooth (monotonic). It's something to watch out for, as the exact nature of the interaction will depend on the stereo loudspeakers that you are using.
An alternative solution would be to place high-pass inline filters between the computer's outputs and the amplifier's inputs. Once the inline filters are set up, they will work independently of any loudspeakers connected to the amplifier.
An alternative solution would be to place high-pass inline filters between the computer's outputs and the amplifier's inputs. Once the inline filters are set up, they will work independently of any loudspeakers connected to the amplifier.
If you are using a Windows PC, then Peace Equalizer (interface Equalizer APO), is an application that can be configured to process audio streams. It can add digital high-pass and/or low-pass filtering, as well as general EQ, to one or more loudspeaker channels running through the Windows audio system. It can be found at the link below:
https://sourceforge.net/projects/peace-equalizer-apo-extension/
The high-pass filters seem to be 2nd-order types, but but cascading filters together it would be possible to achieve higher-order filter response functions. For example, it would be possible to create 4th-order Linkwitz–Riley low-pass/high-pass filters. That just requires selecting particular Q values for the pairs of 2nd-order filters chosen to make the 4th-order filter.
https://sourceforge.net/projects/peace-equalizer-apo-extension/
The high-pass filters seem to be 2nd-order types, but but cascading filters together it would be possible to achieve higher-order filter response functions. For example, it would be possible to create 4th-order Linkwitz–Riley low-pass/high-pass filters. That just requires selecting particular Q values for the pairs of 2nd-order filters chosen to make the 4th-order filter.