I was given a Sony SAWP780 sub today by a co-worker.
Said it didn't work so I plugged it in and nothing.
Replaced the missing fuse and still nothing. Power transformer got warm, but the power LED didn't light.
Here's the measurement of the sub. Not gonna try to disassemble yet to get a driver only measurement as I am not sure how it comes apart and don't want to damage the cabinet.
I decided to test it with a Dayton Audio SA100 plate amp and connected it to my main system.
The sub actually sounded decent. It seems to have a decent low frequency response.
Not sure what this means but under a certain frequency the driver seems to move more and push more air, although it still sounds decent.
What's y'alls opinion of the sub?
Is it something actually good enough to use for music or is it more of a home theatre sub?
Also is there any benefit to putting the driver in a different enclosure?
Said it didn't work so I plugged it in and nothing.
Replaced the missing fuse and still nothing. Power transformer got warm, but the power LED didn't light.
Here's the measurement of the sub. Not gonna try to disassemble yet to get a driver only measurement as I am not sure how it comes apart and don't want to damage the cabinet.
I decided to test it with a Dayton Audio SA100 plate amp and connected it to my main system.
The sub actually sounded decent. It seems to have a decent low frequency response.
Not sure what this means but under a certain frequency the driver seems to move more and push more air, although it still sounds decent.
What's y'alls opinion of the sub?
Is it something actually good enough to use for music or is it more of a home theatre sub?
Also is there any benefit to putting the driver in a different enclosure?
The graph is as follows.
Red line = phase
Blue line = impedance
Red line = phase
Blue line = impedance
The impedance minima, box tuning (Fb) is around 45Hz, and the larger upper peak indicates it's frequency response is rolling off above Fb.
Below Fb, the output of the port is out of phase with the driver, it blows air from the port but makes little sound output.
The 150 watt at 10% distortion (dead) amplifier section probably has a HP filter to prevent over excursion below Fb.
"Good enough" is subjective. Objectively, there is a fair amount of music that contains an octave or more content below the sub's Fb.
A larger cabinet tuned lower would have more low end, but may not sound as "decent" as it does now.
I was able to pull the front panel off the sub without damaging it.
Here's the sub outside the box.
Here's the sub outside the box.
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I do have a pair of onkyo speakers using two 5" woofers and a dome tweeter that I'm dropping in a proper crossover.
Am thinking of getting one of those 2.1 amps parts express sells and using that with those speakers and the sub.
The smaller amp will likely have a high pass for the sub.
Am thinking of getting one of those 2.1 amps parts express sells and using that with those speakers and the sub.
The smaller amp will likely have a high pass for the sub.
That statement is so refreshing to see compared to "90% of music is above 50hz."
For the intended purpose which is to provide a little low end to a video presentation that the line I work on shows to visitors sometimes at work, the sub should be fine.
Now for HI-FI music reproduction I'd prefer a better sub.
Now for HI-FI music reproduction I'd prefer a better sub.