Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Do you need a sub woofer with these?
Document: These are the best desktop computer speakers I've ever owned. With today's prevalent low-end frequencies in music the temptation is to add a sub-woofer to any desktop speaker setup to enjoy the full musical spectrum. There is no need to do that with these speakers. You'll enjoy the full range of sound.
The only thing I had to do different was buy a longer conection cord, but the speakers sound great. The stereo is clearly defined, and depending on the quality of the source sound, they even capture a virtual surround sound. Perfect for someone who wants good sound without tripping on cords. And - no - you don't need a sub-woofer. The sound is amazing.
This is really good speakers. Are they the best you can get for 99$ ? I am not sure about that but you cant get better 99$ speakers with the form factor these speakers have...these are super light..super small...fits easily in small spaces...no sub woofer required...Sound Quality - 9/10Bass - 8/10 - For those who feel these are not bassy, you need to tweak your EQ.
Full and crisp sound- excellent quality overall. The bass is amazing for not coming with a sub woofer, I don't regret this purchase at all. Highly recommend.
The Bose replaced a 5 year old more expensive larger sound system that had a sub woofer. I think these sound better and for the price you can't go wrong.
I ended up buying the speakers because of the amazon reviews and for $100, well worth the price. Not very big but they produce a great sound and it does produce pretty good bass that on other speakers require a sub woofer.
They have great sound for  a pair of laptop speakers and the price is fair for the Bose name and sound quality, however the bass is a little weak. It would be nice if there was an option for a sub woofer that you can purchase separately and connect to these speakers.
:DDefinite recommend if you listen to classical while sitting close to your PCPros:* Great sound clarity* Small footprint* Simple, sleek, contemporary stylingCons:* Low Bass* Max volume not sufficient even for average sized rooms* No inputs for a sub-woofer
Nice and compact with quality sound including base without a separate sub woofer. My only complaint is that the volume control has a groove to indicate its position and it is impossible to see in medium to low light. They should have painted the groove white. I used finger nail polish.
A sign of their quality is that my beats audio sound card/drivers absolutely crushes my work Dell laptop with bla sound capability driving these speakers. The sound bigger than their size, typical of Bose. I'm also confident that while made in China (bummer) they will be made to last.Most shoppers will compare these on Amazon to Logitech (decent speakers) with a sub-woofer.
Answer: I can't say they wouldn't sound better with a sub woofer, but I think they are fine just as they are and I think Bose did a good job with these speakers.  I also have a set of Logitech speakers that I use on another computer that have a large sub woofer and they do sound a little fuller, but for what the Bose speakers are they sound very good.