Éste subwoofer genera graves bastante contundentes considerando su pequeño tamaño, es excelente para sistemas muy sencillos como lo es mi caso, agrega muy buenos grabes para ver series y películas, para música hace que tenga buena respuesta en el rango de las frecuencias grabes pero si quieres mayor impacto en rangos bajos adquiere uno de mayor tamaño, posiblemente de 10" sea una excelente opción

Si no tienes espacio es un buen producto, es compacto y tiene buen sonido, si necesitas algo de potencia no lo recomiendo sus 150w a lo mucho son 100w debido a que es clase ab. Con uno de estos y un par de monitores presonus o mackie obtienes mejor rendimiento que un logitwch z625 casi al mismo precio. si tu espacio es grande no lo recomiendo.

Increíble Subwoofer me encanto en música suena increíble para el tamaño es un gran Subwoofer pero en cuanto a Peliculas siento que se queda un poco corto pero aun así suena muy bien la verdad me encanto lo recomiendo do ampliamente no dudes en pedirlo.

I I purchased this after reading some of the good reviews that it got. Once I hooked it up and tested it, I kept thinking back to those good reviews it got and wondering how it could have gotten such good reviews. This little subwoofer hardly puts out any base. I have it paired with a set of Martin Logan floor standing speakers with two five and a quarter inch woofers. These offers produced more base than this little sub did. I also have a $1,000 paradigm subwoofer that I turned off while testing this. I bought this to act as mid-bass and fill in some of the 100 to 120 HZ mid-base frequencies. I could hear the bass from my Martin Logan speakers more than I could this subwoofer. I had high expectations for it because of the band pass and closure which typically produces more base than a standard cabinet. This thing is either underpowered or you have to really really turn it up. I turned up the subwoofer level on my receiver which has two subwoofer outputs. Problem with turning up my subwoofer in the GUI is that it would also turn up my paradigm which is already very loud and rocks the house. The other deal breaker for me and this sub is that it hummed right when I plugged it in. And it's a humming that you can hear even if you're right next to it. I have a very expensive shielded RCA subwoofer cable. So that is not the issue. The only way I could get the humming to turn down was to turn the volume on the sub down which made it play even lower. I wound up returning it to Amazon because of the humming and the low-bass reproduction. The only thing I really liked about it was the build quality and the small size. I really had high hopes for this and wished that it had met my expectations but I was left severely disappointed.

No llega a un volumen deseado y si subes el volumen comienza a hacer sonidos como "clank" rápidamente. Si bajas el volumen apenas se aprecia que tienes un subwoofer.

No se pudo cargar el contenido.

delivered in a timely manner and works as designed

Where do I begin? Let me start with the technology that is offered in this product...This Earthquake FF6.5 is pristine example of proper audio engineering, fine tuning and care in a finished product. Let's start with the enclosure;What you have in the 6.5" model is unlike any offering from other manufacturers out there. The enclosure is an extremely solid(resonance-free) quarter-wave transmission line/horn-loaded hybrid made from a combination of 3/4" and 1/2" MDF. Implementing this technology into a home theater offering is an incredibly wise thing to do. Why? The output and accuracy of low-frequency notes are greatly increased, making this subwoofer not only loud but INCREDIBLY efficient and accurate. Quarter-wave transmission line enclosures, if made correctly, can take a smaller driver(subwoofer) and make it equal in SPL to larger subwoofers with traditional ported or sealed box designs. What this means is if you wanted the true output level of a 10" subwoofer but would like to save some space without compromising anything, this is your sweet spot... This enclosure is built in such a way that the air pressure produced from the subwoofer acts as an efficient cooling setup for the amplifier. This allows the amplifier to be internally concealed as opposed to sticking out the rear end of the enclosure= more saved space!Second... The subwoofer itself. What you have here is a long-throw 6.5" subwoofer with patented Turbine-Cooled-Transducer technology. This technology forces air in through the holes on the bumped backplate, over the voice-coil and out again with each cycle. This allows the subwoofer to play at high levels for a long time while remaining cool, thus keeping the RMS wattage stable... The linear mechanical X-Max (distance cone can travel front to back) is a FULL 2 inches! This is incredible excursion from such a small driver! When I say this subwoofer matches the output of a traditional 10" subwoofer I'm not exaggerating...The voice-coil and motor assembly is modeled after Earthquakes MiniMe series with some concepts taken from their Magma subs as well.Third... Wrap this package up with an extremely efficient Earthquake class A/B digital amplifier, awesome X-over controls and 180 degree phase switching ability and you have something no other company could offer at this price. This amplifier runs at 100 watts RMS with 150 watts peak power output keeping strong power output consistent during the entire time you listen to music or watch movies...If anyone has had the pleasure of talking with professor Joseph Sahyoun of Earthquake Sound you would know the level of genius this man has in audio engineering. The level of quality craftsmanship and technology he puts into his products are something I greatly admire being an audiophile. Most people who have bought this truly don't know what they have.A word of advice; when you get this subwoofer, allow 1 week of proper break-in time to exercise the spider and motor assembly before turning it very high. When subwoofers are sent to you new from the factory, the spider is very stiff with very little play. As you break them in properly they loosen up allowing the sound reproduction to increase in SPL and accuracy/sensitivity. Cranking up a new subwoofer fresh out of the gates stresses the stiff spider and can break the seal between spider and speaker cone= blown sub.Keep the max volume at 65% or so for 4-7 days.A note on the proper application of this subwoofer. This sub is designed to be implemented a space no larger than 12' x 12' x 8' or similar sized rooms. I noticed a bad review from a gentleman who placed this in a kitchen. This is a misapplication of this product... Most kitchens are "open room" designs. In a vast open area like a kitchen you are going to lose your Sound Pressure Level (SPL) which leads to a flat bass response. This is a product designed for a bedroom home theater where the sound pressure is contained(door and windows closed).Another reviewer mentioned a "humming" noise from his sub, this is due to a bad rca line-out source. Traditional cheap rca line-out cables are unshielded. Being unshielded they can pick up EMF signals floating around from other cables, power sources, antenas etc... Using shielded high quality cables will help drastically. I use what is called a "power conditioner" on all my audio and video equipment. This reduces or eliminates interference, voltage fluctuations, over-voltage and damage to components from brown/black outs.If you appreciate a well-balanced audio system and are in the market for a subwoofer 10" or under, seriously consider this 6.5". Many people are afraid to buy a 6.5" for fear of it under-performing. Do NOT fret about this subs size, the technology is there to rival 10" subs...

Poor build quality. Granted, I did not expect a lot from this sub considering the price, (I only wanted something simple with a small footprint and somewhat acceptable performance), but when I attached the Line-In on the sub to the Line-Out on my primary speakers, it created a constant hum. (I used good quality cables that I have used with other component connections with no issues.) The hum was actually on the primary speakers as well as the sub. So whatever cheap circuitry is in the sub was affecting the primary speakers with some type of feedback as well. This was not happening with the 12yr old sub I currently have attached using the same Line-In and Line-Out connections. The primary speakers are very good quality, so this was the sub causing it, no doubt. When I played music, it performed as a low-price sub would. Ok sound at low volume and some distortion at higher volumes. As others have mentioned, the shipping box was unacceptably thin and cheap and had some damage to it. It did not appear to damage the unit itself in my case, but I could see in general the box not being sufficient for shipping and causing damage. You may not experience the same issue if you are attaching it directly to a AV receiver that may be able to handle the feedback, but in my connection scenario, there is no way I can put up with the constant hum, even with nothing being played. I packed it up and returned it the same day.