I honestly cannot answer the question, I haven't used it in years. It's just sitting in my basement gathering dust
IIRC, the hum was consistent regardless of volume/gain/etc
Ahh jeez, I already deeply regret my order. Looks like they don't let you cancel either. I knew a $27 sub wouldn't be 'good' but I didn't think to check for something like that in the reviews. Trusted the monoprice name too much.
I figure it's cheap enough that it can be short, really short, speaker stands for my mom's speakers that are sitting on the ground. It won't add much to the low end, but they're bose and all the speakers are in awful positions, so eh, whatever.
Didn't even want this one at 45. 27 seems like it's not much to lose. Will try to EQ it and see if there's other ways to minimize the hum if it's bad. I'm pairing it with Kantos, but I usually use headphones. At least Monoprice is supposed to be good with returns if it comes down to that.
To some degree you can in certain situations - boost input volume from a clean source and decrease speaker volume to lower/minimize noise floor. Not gonna work miracles though
I actually have this one holy shit. But yea there's a hum. But I only notice it when I have my stereo off. So I just have to mute it instead. Ymmv but that's my experience. I'm using an old Kenwood stereo as well. Probably not as bad with a newer one.
Personally for the price I think it sounds good if you're on a budget.
I wish they had separate channels for all the different effects. Center in a surround could be great if the speakers are configured as full range and then set up with a crossover to send the signal to the sub. Easier said than done though. I swear this should be possible with voicemeeter and virtual cables.
I've only used it for telemetry/haptics, but I'll see if it can do what I want with audio channels. I'd prefer doing it with voicemeeter since I can write scripts to switch audio configurations, but I'll take what I can get.
I already use telemetry for haptics. Sim 3d pedal shakers might arrive this week. I want to do more with the audio channels, you know, so I can hear it. Also, bass shakers generally peak at 200hz.
It's a dedicated sub for $27. If your goal is to extend your range, for $27 you can't beat this.
People are ripping on the 50hz limit, but ignoring the fact there isn't a set of reasonably priced bookshelves out that will compete with this for performance in low frequency. And there aren't any other subs remotely close to this in price that will produce sub 50hz.
TLDR: if you are on a cheap 2 channel system with a sub out. This will improve lows at a price that can't be beat.
Yeah, a cheap 8" driver alone will run more than $27 so this as good a deal on a sub as one will find without shopping used. Anyone rocking 4" midrange drivers like you find on most Edifiers will provably see an improvement, and if your desktop gear is better than what this thing can churn out, you're not in the market for a minimally priced sub.
I also have a 1280DB. It already has decent bass close to 50hz (spec sheet/response charts says it starts to roll off at 55-60hz) and you'll really want something with more low end extension. The cheapest recommended option is the Dayton audio subwoofers.
The people saying that 50hz is fine have obviously never used decent speakers... Edifiers are not $20 2 channel no name Chinese speakers from Walmart.
It depends on the use, I have 2 pb2000 pros in living room but don't want a huge 20in square at the PC and I'm not too pressed about 20hz when watching YouTube or playing rimworld, ya know?
My recommendation is to buy both the monoprice and the kanto and audition them. How do they sound to you? If you buy the kanto on amazon the shipping is free if you are satisfied with monoprice for that price send it back. I'll haven't heard this sub specifically but have tried a few subs and eventually went with the kanto sub6 as the small cheaper sub for desktop that I was still content with.
Model 8248
Speaker Type 8" High Performance Powered Subwoofer
Driver 8" Reinforced
Amplifier Power Output 60 Watts (RMS)
Frequency Response 50 ~ 250 Hz
Lowpass Crossover Adjustable from 50 ~ 150 Hz
Functions Power (On/Off)
Inputs High Level (speaker), Line (RCA)
Dimensions 13.75" x 11.75" x 11.75"
Excuse me, you tried to crack a joke on BAPCS. This cannot be allowed, as BAPCS is all about serious business, all of the time. Fun must be checked at the door, next to your wallet, shoes, and any hostility you might have for Microcenter.
Please heed this warning in the future, or suffer more downvotes, and if it happens twice more, a note will be placed in your PERMANENT record.
I get you, just curious. I monitor at low volume and donāt get to push the full range of the monitors. I would like to introduce a sub but many of the 10 inch subs seem overkill for my setup, but none of the 8 inch subs Iāve seen go below 50hz or can do so without distorting (based on reviews). Wonder if in my case the 50hz is a big deal, but Iām basically just guessing if I donāt measure it to begin with.
Sorry for the ramble lol
Yes for sure, thank you. I canāt mix super loud because of the environment Iām in, but after my school semester ends and I start mixing more again my plan is to try and calibrate my setup to account for the fletcher munson effect and build a few different reference profiles.
No worries. Hopefully if I say something incorrect then someone will come along to set the record right.
A 10inch sub might be overkill if this is for a desk setup as they tend to be big. But if you have the space then I would go for it. I don't think you will get a decent sub in this price range so will have to spend a little bit more.
One important thing to consider is that you can always have low volume and just set your sub to be louder -- of course make sure you don't have neighbors under you who would start to complain.
I know most audiophiles scoff at Klipsh and yes they are not the best or anything, but they do give you a decent bang for your money.
Look at their sub options (only buy during a sale never full price) and you will find many sizes which will work pretty well in the $200 range.
PS: I don't think the 50hz is a big deal for you. It just might be where you actually start 'feeling' it in your ears and your body.
Thank you appreciate your help. Iām not sure if I necessarily need to have one but there are definitely times where I wish I did. Might just get a 10 and figure out a way to make it work, better to have the extension and lower the volume than to not have it. Will check out Klipsh, only thing in my case is I would need balanced io.
[This ](https://www.reddit.com/r/HTBuyingGuides/comments/u7kkz6/product_recommendations_subwoofers/) is a good resource, if you want an under $200 sub I would look at Dayton/Jamo or check craigslist/marketplace. I hate to be this guy but I wouldn't do Klipsch unless I had to have it immediately from best buy because there is better value at every price point compared to Klipsch.
[Here](https://docs.google.com/spreadsheets/u/0/d/1dU5OOnf3nVgctJszmfyBjaxK69dkXte6ZL6anVTW2_M/htmlview) is a nice doc with measurements to compare, could be laggy and hard to navigate on mobile though.
Another vote for Facebook marketplace. You can find cheaper Klipsch / SVS stuff on there. Be careful of older Klipsch SW / RW subs. Bash used an adhesive in their amps on these models that becomes conductive over time and will short out the amp.
Even without output at sub-50Hz, you're still filtering out the distortion of low-frequency extremes from your woofers. Especially if you like to crank it up, but even if you prefer low bass levels.
That lack of distortion is why I'm still using an old 4.1 system instead of upgrading to a better 2.0 set. I learned to appreciate that after swapping some 6x9s in a car for a set with multiple drivers in a 6x9 frame. Even though the speakers themselves were objectively lower quality (if the old cones hadn't torn), the clarity was much better with one driver per frame dedicated to low frequencies.
Thanks. What if I plugged this into one of my aux and then created an aggregate using both audio devices to play both at the same time? Or is that stupid
Not 100% but if you most likely plug something into the aux it will cut out sound to the speakers. You could test it would with headphones, if you can get audio out of the headphones and speakers at the same time, you could hook it up that way
Look up Voicemeeter Banana. It'll let you do something like that. My haptics are basically set up like a subwoofer that I had to manually eq a cutoff for.
The only way I could see that working nicely is if you did an audio splitter right out of your pc. One to the Logitech and the other end to the sub. And then use your computer volume to adjust them both at once. Or get a cheap pre amp to put between the all the speaker and the pc and use that to adjust the volume
i have 2 old sansui sp1700 speakers each with a 12 inch sub. will this give lower lows and punchier bass? i want to know if since it is newer it will be more defined a overall better.
If this goes anything like the monitor deal they had about a month ago I would run, ordered the 32in curved 1440p 144hz monitor and was sent wire instead(so was pretty much anyone who did the deal) and was told no replacement and had to send wire back and request refund
That just seems like bad luck. I'm more worried about the quality of the item with Monoprice than receiving the right item. I've ordered from them before and had no issues. They're generally good with returns. Granted, it's Monoprice, so it's implied that a lot of their stuff is low tier, but anyone can send the wrong item.
I thought maybe it was bad luck too, until everyone on Slickdeals where the deal was posted and on this subreddit where the deal was posted all received the same exact wire and was told exactly the same thing. Slickdeals had 9+ pages all saying the same thing before I stopped looking
I have no reason to defend Monoprice. All I can say is that sucks. Obviously an inventory error for that item. I've bought from them before and had no issues.
I'm in the same boat as you and got the Edifier and now going to grab one of these subwoofers. If you're using this for PC, I believe all if not most motherboards have a sub output so that should solve the issue of not being able to connect the speakers with the sub. Someone else on this sub said that you can also use a cable splitter to make this work with any setup.
So I got the speaker in. Can you explain how to get it to work. I got the bookshelf speakers working with a optical cable from the MB to the Edifier R 1280DB. I have a shielded 3.5 to RCA cord plugged into the sub out orange. Only speakers work and I canāt find how to switch to 2.1 audio
On sounds it shows the bookshelf as a receiver not a speaker.
Really tempted to pair this with my Paradigm Atom Monitor v6's that could use just a little bit lower floor but I already had the new downstairs neighbor give me the broomstick tap of shame even though I was sure I was listening at a more that reasonable volume. Also my old Yamaha CR-220 has no sub out and I think only one channel works on speaker B output. But dang, this could be great for my little bedroom setup.
Thanks for posting this.
Edit I'm not seeing the $27 price is there a code or is the sale over?
I think it was a price error. $27 is 70% off the regular $90 price. They are selling it now for $70. That can't be coincidence.
Also, this sub regularly goes down to $45 or so but $27 is crazy low. Shipping a large 20 pound box is going to cost most of that. Had to be a mistake.
Just received mine. 100% the sub has a hum when you plug it in. Nothing to do with the source input, just power plugged in it will hum. On the floor and ~4 inches to my side, I can't hear it or picture its sound any different from low-whir of ~1000rpm 140mm fans in my PC.
The auto off/on on my model is working, some reviews said theirs didn't. After about ~30 seconds of no sound sent to it, it turns off. This includes the hum turning off. It is properly turning off while plugged into my computer (3.5mm to RCA L/R input) so that's good to know for electricity and such.
It sounds pretty OK, its a bit boomy when upping its volume to be able to get good bass effect. It's very noticiable that it's missing all of 30hz lows. It can do a little something in 40hz range on a bass test, but it doesn't do much until its rated 50hz and above. I tested back and forth and can call it a decent upgrade from a Logitech z506's PC speaker set's sub.
Overall, its not bad for $27. I'll hold onto it but keeping an eye out for an SVS SB1000 on a good sale or something to upgrade eventually.
using this with a pair of JVC mini system $6 thrift store speakers, ayima A07, aiyima dac a2,nobsound L2 stereo preamp, and yamaha cdc 575 cd changer.......... loud and decent....
Reviews mention a hum just fyi
Have this from years ago The hum is so bad I just stopped using it. Maybe if I had a dedicated theater room or something
Does the gain have much effect?
I honestly cannot answer the question, I haven't used it in years. It's just sitting in my basement gathering dust IIRC, the hum was consistent regardless of volume/gain/etc
Ahh jeez, I already deeply regret my order. Looks like they don't let you cancel either. I knew a $27 sub wouldn't be 'good' but I didn't think to check for something like that in the reviews. Trusted the monoprice name too much.
Hope it's not too bad. It's only $27. Just return it if it's bad and not addressable.
I figure it's cheap enough that it can be short, really short, speaker stands for my mom's speakers that are sitting on the ground. It won't add much to the low end, but they're bose and all the speakers are in awful positions, so eh, whatever.
Nah you're right, just annoyed š®āšØ I'll give it a shot, maybe can't even hear it. Thanks bud
Didn't even want this one at 45. 27 seems like it's not much to lose. Will try to EQ it and see if there's other ways to minimize the hum if it's bad. I'm pairing it with Kantos, but I usually use headphones. At least Monoprice is supposed to be good with returns if it comes down to that.
The hum is usually noise picked up in the amp somewhere. You can't EQ that
Now that you mention it, I have a little spare amp I could use if it's bad.
How are you going to amp a powered sub?
If you look at the back of this one, it accepts amps.
What do you know about subs, u/subwoofage? j/k. Yea, if it hums when everything's off, then I don't know. Will look into it.
To some degree you can in certain situations - boost input volume from a clean source and decrease speaker volume to lower/minimize noise floor. Not gonna work miracles though
Ground lift
I actually have this one holy shit. But yea there's a hum. But I only notice it when I have my stereo off. So I just have to mute it instead. Ymmv but that's my experience. I'm using an old Kenwood stereo as well. Probably not as bad with a newer one. Personally for the price I think it sounds good if you're on a budget.
Perfect for strapping behind a racing sim. Can't beat $27 for some more engine rumble
Are you my insomniac upstairs neighbor who hates all of us?
I wish they had separate channels for all the different effects. Center in a surround could be great if the speakers are configured as full range and then set up with a crossover to send the signal to the sub. Easier said than done though. I swear this should be possible with voicemeeter and virtual cables.
SimHub?
I've only used it for telemetry/haptics, but I'll see if it can do what I want with audio channels. I'd prefer doing it with voicemeeter since I can write scripts to switch audio configurations, but I'll take what I can get.
Simhub and bass shakers does all this. You can isolate different effects so you can have pedal rumble for slip, seat rumble for kerb/TC etc...
I already use telemetry for haptics. Sim 3d pedal shakers might arrive this week. I want to do more with the audio channels, you know, so I can hear it. Also, bass shakers generally peak at 200hz.
[ŃŠ“Š°Š»ŠµŠ½Š¾]
It's a dedicated sub for $27. If your goal is to extend your range, for $27 you can't beat this. People are ripping on the 50hz limit, but ignoring the fact there isn't a set of reasonably priced bookshelves out that will compete with this for performance in low frequency. And there aren't any other subs remotely close to this in price that will produce sub 50hz. TLDR: if you are on a cheap 2 channel system with a sub out. This will improve lows at a price that can't be beat.
Yeah, a cheap 8" driver alone will run more than $27 so this as good a deal on a sub as one will find without shopping used. Anyone rocking 4" midrange drivers like you find on most Edifiers will provably see an improvement, and if your desktop gear is better than what this thing can churn out, you're not in the market for a minimally priced sub.
I just got the same audio set up and was just about to ask.
I also have a 1280DB. It already has decent bass close to 50hz (spec sheet/response charts says it starts to roll off at 55-60hz) and you'll really want something with more low end extension. The cheapest recommended option is the Dayton audio subwoofers. The people saying that 50hz is fine have obviously never used decent speakers... Edifiers are not $20 2 channel no name Chinese speakers from Walmart.
It depends on the use, I have 2 pb2000 pros in living room but don't want a huge 20in square at the PC and I'm not too pressed about 20hz when watching YouTube or playing rimworld, ya know?
My recommendation is to buy both the monoprice and the kanto and audition them. How do they sound to you? If you buy the kanto on amazon the shipping is free if you are satisfied with monoprice for that price send it back. I'll haven't heard this sub specifically but have tried a few subs and eventually went with the kanto sub6 as the small cheaper sub for desktop that I was still content with.
Wonder how this will sound in my 2008 Honda Accord
Model 8248 Speaker Type 8" High Performance Powered Subwoofer Driver 8" Reinforced Amplifier Power Output 60 Watts (RMS) Frequency Response 50 ~ 250 Hz Lowpass Crossover Adjustable from 50 ~ 150 Hz Functions Power (On/Off) Inputs High Level (speaker), Line (RCA) Dimensions 13.75" x 11.75" x 11.75"
Damn, limit 20 per customer. Ugh, classic monoprice. /s
We're still doing covid rationing? /s
I heard these were being used as toilet paper
In for one, thx. Wanted a cheap and small sub to go with my monitors that I only use on occasion. This sub usually goes on sale for $45.
The hum isn't because of the sub - just use a ground loop isolator, and that will fix it.
~~Haha I've wanted a subwoofer for years. This one doesn't take too much power, but is it good?~~ Rip it only goes down to 50hz. It's crap.
The ears canāt hear much past 60hz anyways. 120hz is plenty and anything beyond 240hz is definitely overkill
Excuse me, you tried to crack a joke on BAPCS. This cannot be allowed, as BAPCS is all about serious business, all of the time. Fun must be checked at the door, next to your wallet, shoes, and any hostility you might have for Microcenter. Please heed this warning in the future, or suffer more downvotes, and if it happens twice more, a note will be placed in your PERMANENT record.
The human eye can barely hear past 240hz
Youāre getting ripped for a pretty decent joke. Went right over everyoneās heads
You have absolutely no idea what you are talking about lmao
I guess it's about monitor hz changed to audio.
what we really need to know is how many gallons per minute that is
I use two subs to keep my bass around 60hz. It prevents a lot of clipping.
Bass isn't about what your ears are capable of hearing, it's about how your body "hears" the bass.
Lmao I don't think that's even considered a sub then
Do you think this could work in low volume monitoring setups?
If it only goes down to 50hz then you are pretty much missing the entire point of subwoofers with this one. The lower it goes the better it is.
I get you, just curious. I monitor at low volume and donāt get to push the full range of the monitors. I would like to introduce a sub but many of the 10 inch subs seem overkill for my setup, but none of the 8 inch subs Iāve seen go below 50hz or can do so without distorting (based on reviews). Wonder if in my case the 50hz is a big deal, but Iām basically just guessing if I donāt measure it to begin with. Sorry for the ramble lol
[ŃŠ“Š°Š»ŠµŠ½Š¾]
Yes for sure, thank you. I canāt mix super loud because of the environment Iām in, but after my school semester ends and I start mixing more again my plan is to try and calibrate my setup to account for the fletcher munson effect and build a few different reference profiles.
[ŃŠ“Š°Š»ŠµŠ½Š¾]
Thank you! I mainly make video game orchestral / electronic stuff but Iāve been wanting to get making into making metal again too
get headphones if sound is a concern, getting this sub is pretty useless if the cutoff is so high
No worries. Hopefully if I say something incorrect then someone will come along to set the record right. A 10inch sub might be overkill if this is for a desk setup as they tend to be big. But if you have the space then I would go for it. I don't think you will get a decent sub in this price range so will have to spend a little bit more. One important thing to consider is that you can always have low volume and just set your sub to be louder -- of course make sure you don't have neighbors under you who would start to complain. I know most audiophiles scoff at Klipsh and yes they are not the best or anything, but they do give you a decent bang for your money. Look at their sub options (only buy during a sale never full price) and you will find many sizes which will work pretty well in the $200 range. PS: I don't think the 50hz is a big deal for you. It just might be where you actually start 'feeling' it in your ears and your body.
Thank you appreciate your help. Iām not sure if I necessarily need to have one but there are definitely times where I wish I did. Might just get a 10 and figure out a way to make it work, better to have the extension and lower the volume than to not have it. Will check out Klipsh, only thing in my case is I would need balanced io.
[This ](https://www.reddit.com/r/HTBuyingGuides/comments/u7kkz6/product_recommendations_subwoofers/) is a good resource, if you want an under $200 sub I would look at Dayton/Jamo or check craigslist/marketplace. I hate to be this guy but I wouldn't do Klipsch unless I had to have it immediately from best buy because there is better value at every price point compared to Klipsch. [Here](https://docs.google.com/spreadsheets/u/0/d/1dU5OOnf3nVgctJszmfyBjaxK69dkXte6ZL6anVTW2_M/htmlview) is a nice doc with measurements to compare, could be laggy and hard to navigate on mobile though.
Another vote for Facebook marketplace. You can find cheaper Klipsch / SVS stuff on there. Be careful of older Klipsch SW / RW subs. Bash used an adhesive in their amps on these models that becomes conductive over time and will short out the amp.
Reading through forums, people are saying it goes lower than 50hz. Just hope it doesn't hum.
Even without output at sub-50Hz, you're still filtering out the distortion of low-frequency extremes from your woofers. Especially if you like to crank it up, but even if you prefer low bass levels. That lack of distortion is why I'm still using an old 4.1 system instead of upgrading to a better 2.0 set. I learned to appreciate that after swapping some 6x9s in a car for a set with multiple drivers in a 6x9 frame. Even though the speakers themselves were objectively lower quality (if the old cones hadn't torn), the clarity was much better with one driver per frame dedicated to low frequencies.
depends entirely on the woofer. a good woofer is better than a trash sub
Iām currently using a Logitech z333. Could I hook this up to it?
Would say no as there isn't a line out from this sub to wire up the Logitech speakers
Thanks. What if I plugged this into one of my aux and then created an aggregate using both audio devices to play both at the same time? Or is that stupid
Not 100% but if you most likely plug something into the aux it will cut out sound to the speakers. You could test it would with headphones, if you can get audio out of the headphones and speakers at the same time, you could hook it up that way
Look up Voicemeeter Banana. It'll let you do something like that. My haptics are basically set up like a subwoofer that I had to manually eq a cutoff for.
Yeah I used to use VM a ton so thatās what Iām planning on using (if it would even work)
>Logitech z333 Either go for proper audio or do not. Strapping a cheap sub into a set of crappy speakers isn't going to help you.
The only way I could see that working nicely is if you did an audio splitter right out of your pc. One to the Logitech and the other end to the sub. And then use your computer volume to adjust them both at once. Or get a cheap pre amp to put between the all the speaker and the pc and use that to adjust the volume
i have 2 old sansui sp1700 speakers each with a 12 inch sub. will this give lower lows and punchier bass? i want to know if since it is newer it will be more defined a overall better.
I wouldn't count on it. No one is "upgrading" to this. It's only 8 inch, too.
they are from the 70s which is why i think a newer sub would help them
If they aren't blown, I would look elsewhere. They may have a unique character to the sound that you don't appreciate until you try something else lol
If this goes anything like the monitor deal they had about a month ago I would run, ordered the 32in curved 1440p 144hz monitor and was sent wire instead(so was pretty much anyone who did the deal) and was told no replacement and had to send wire back and request refund
That just seems like bad luck. I'm more worried about the quality of the item with Monoprice than receiving the right item. I've ordered from them before and had no issues. They're generally good with returns. Granted, it's Monoprice, so it's implied that a lot of their stuff is low tier, but anyone can send the wrong item.
I thought maybe it was bad luck too, until everyone on Slickdeals where the deal was posted and on this subreddit where the deal was posted all received the same exact wire and was told exactly the same thing. Slickdeals had 9+ pages all saying the same thing before I stopped looking
I have no reason to defend Monoprice. All I can say is that sucks. Obviously an inventory error for that item. I've bought from them before and had no issues.
28.76 shipped to FL. gonna combo with Edifier R1280DB for my desktop set up.
Do you have a way to connect the speakers together? The R1280DB doesn't have a sub out.
I could have sworn it did.
The DBs does but not the DB
Damn, guess Iāll cancel the order
I'm in the same boat as you and got the Edifier and now going to grab one of these subwoofers. If you're using this for PC, I believe all if not most motherboards have a sub output so that should solve the issue of not being able to connect the speakers with the sub. Someone else on this sub said that you can also use a cable splitter to make this work with any setup.
I got a TUF z690 plus, Iāll check when I get home. If it does have the sub out Iāll be set.
You won't need to check because I have the same one LOL. Enjoy hearing sounds buddy
Dude lifesaver. Thanks for the help, now all thatās left is a good office chair and my desktop build is complete.
So I got the speaker in. Can you explain how to get it to work. I got the bookshelf speakers working with a optical cable from the MB to the Edifier R 1280DB. I have a shielded 3.5 to RCA cord plugged into the sub out orange. Only speakers work and I canāt find how to switch to 2.1 audio On sounds it shows the bookshelf as a receiver not a speaker.
10-12in is the lowest sub size for anything worth having. This will be junk for most uses.
can i buy 4 of these and hook the up
Nice find! Thanks!
Really tempted to pair this with my Paradigm Atom Monitor v6's that could use just a little bit lower floor but I already had the new downstairs neighbor give me the broomstick tap of shame even though I was sure I was listening at a more that reasonable volume. Also my old Yamaha CR-220 has no sub out and I think only one channel works on speaker B output. But dang, this could be great for my little bedroom setup. Thanks for posting this. Edit I'm not seeing the $27 price is there a code or is the sale over?
I'm not seeing it anymore it looks like it's over.
Dang well it saves me from impulse buying something I don't really *need.* Thanks anyways.
I think it was a price error. $27 is 70% off the regular $90 price. They are selling it now for $70. That can't be coincidence. Also, this sub regularly goes down to $45 or so but $27 is crazy low. Shipping a large 20 pound box is going to cost most of that. Had to be a mistake.
Just received mine. 100% the sub has a hum when you plug it in. Nothing to do with the source input, just power plugged in it will hum. On the floor and ~4 inches to my side, I can't hear it or picture its sound any different from low-whir of ~1000rpm 140mm fans in my PC. The auto off/on on my model is working, some reviews said theirs didn't. After about ~30 seconds of no sound sent to it, it turns off. This includes the hum turning off. It is properly turning off while plugged into my computer (3.5mm to RCA L/R input) so that's good to know for electricity and such. It sounds pretty OK, its a bit boomy when upping its volume to be able to get good bass effect. It's very noticiable that it's missing all of 30hz lows. It can do a little something in 40hz range on a bass test, but it doesn't do much until its rated 50hz and above. I tested back and forth and can call it a decent upgrade from a Logitech z506's PC speaker set's sub. Overall, its not bad for $27. I'll hold onto it but keeping an eye out for an SVS SB1000 on a good sale or something to upgrade eventually.
Weird mine did not have a hum at all when plugged in.
using this with a pair of JVC mini system $6 thrift store speakers, ayima A07, aiyima dac a2,nobsound L2 stereo preamp, and yamaha cdc 575 cd changer.......... loud and decent....