The Q Series of subwoofers is our sound quality reference line. Featuring a hefty high strength single magnet motor structure with a heavily bumped t-yoke, the 27mm of Xmax allows for incredibly detailed, tight, and powerful bass. Triple progressive spiders keep the incredible linear excursion of this sub under control, while the extra heavy lead wire feeds the giant voice coil. With technology pulled from the larger BTL line the new Q has more options than ever before. Hyper chamfer, full cooling, high or low Qts topologies, as well as the ability to add an inductance ring in the high Qts design, there is now even more flexibility within the Q platform. Working well in both small ported and sealed enclosures, you do not have to give up your trunk to have strong bottom octave foundation for the rest of your system. The Q series is the new bottom octave benchmark.
Showing reviews 1-10 of 37 | Next
Posted by George on 5th Aug 2015
I used to run my JL HD750/1 into a now defunct Adire Audio Shiva X2 12" sub, which I thought was great. And to be fair, it was, but after a many many hours of abuse, the tinsels detached and rather than going about fixing them, figured I'd upgrade to something meatier. I heard all the great things, so went ahead and pulled the trigger on the Q 12" since it would take more power, and was a drop in replacement into my existing sub box with zero modification required. The box is a fiberglass custom mold at about 1.5 cu ft, before displacement, sealed.
I was not prepared for the difference in every respect - how deep it would dig, how loud it would get, how clear and punchy the bass would be, relative to my beloved Shiva. There's really no comparison to be drawn, this is a whole different piece of equipment and needs to be heard/felt to be believed. Considering that I got it built fully loaded with all the bells and whistles - I'm not feeding it even half the power it can handle, and to be honest I never will... I'm pretty my car may fall apart if I do. Even with the 100 or so pounds of sound deadening - dynamat, foam and MLV sheeting - there's rattles from some of my panels - specifically the rear deck. Barring putting some screws through the rear deck panel to secure it to the metal underneath, I don't see any way to stop it.
I don't know what it can do as far as SPL or any competition type setup - I got it to be my daily banger and it delivers that and then some. Now that it's been broken in for about a week, it's opening up even more and I'm going to have to redo my whole timing/EQ/channel volume configuration becAuse even at 750W RMS, the bass is so massive it's overwhelming the 4x HAT Legatia SE 7" drivers, each of which I'm pumping 150W RMS into. Like another reviewer mentioned, it really seems to get better every day. I can't wait to get back on the road!
Couldn't be happier with this baby, it's moving with me when the current car inevitably dies. Fair warning though - the fact that these are custom built per your specs means that order to delivery took about 3-4 weeks. Just know this going in. It is well worth the wait.
Posted by DavidSQ on 5th Aug 2015
I don´t know where to start. I have dreamed of having one of these subs for a long. I have read lots of reviews and I have to tell you, they are all right. This sub sounds beautiful, clean and accurate.
If you demand low and clean, this is the sub for you. I feel no regrets. Satisfaction is Guaranteed.
Posted by Ian on 20th Jun 2015
The Fi Q has been my dream ever since car audio forums were flooded with build logs in 2007. I finally got one of my own now that I have a new car worthy of putting a quality subwoofer into. It was installed a couple weeks ago and I wanted to give it some time before giving a review to make sure I wasn't just blinded with joy of finally having one.
Okay: wow! It sounds better every day as it gets more playing time. It seemed to "loosen up" and really hits what I want now. I have it in a 1.25 cu. ft. sealed box and it plays all kinds of music just right. I'm sort of considering making a box that is slightly bigger, but everything is awesome as is. I have it running off of an MB Quart 1500.1 wired to 1 ohm. The amp came with a bass knob and I know the entire world hates them, but I set the gains with the knob turned all the way up, so it never really is seeing 1500rms and possible clipping because I rarely turn it more than half way. This thing would destroy my car if I let it eat all of that power.
Bottom line: it is everything I expected and more. And as we have all heard, it was confirmed that customer service with these guys is top notch. I sent so many stupid emails asking all kinds of questions that most companies would just delete, but I received a timely response every time. They really care about their product and want to make sure you get the best low end experience possible.
Posted by ahl395 on 12th Apr 2015
First of all, I have waited over a year of owning this subwoofer to post this review. I have used it in three different enclosures made by myself.
I highly recommend using the sub in a properly sized and tuned ported box. The output and sound quality from this subwoofer is excellent. I currently have it in a 2.3 NET cuft box tuned to 32hz, it is the best subwoofer I have ever heard. Gets insanely loud and low, and still sounds great for all types of music.
I also used the subwoofer in two sealed boxes. One being 0.8cuft and the second being 1.2cuft. It sounded great, but always lacked the output I was looking for until i put it in a ported box. Personally there was not a whole lot of difference in the two different sized sealed boxes, but the 1.2 was slightly better. It was very fast, punchy, and sounded great. But the ported box is much louder, and really didnt give up much of the quick punchy nature of the sub.
I am running it in a small sedan on a 2000W RMS Hifonics Mt. Olympus Hercules amp. Along with an XS D1200 second battery and the Big 3 upgrade.
Overall I highly recommend the Q12. It is an excellent subwoofer, and I never plan on upgrading from it (except maybe adding a second one, lol)
Posted by Justin Kohl on 27th Mar 2015
All around you can't find a better driver than Fi's Q without stepping up to the "big boy" drivers. I'd recommend this driver to anyone that's looking for a good musical driver ,that can handle some power. It performs terrific on the "LOWs"! I have been powering mine with around 1700-1800w RMS for about a year now with no problems. Just feed your amp a CLEAN signal and get yourself a quality enclosure built to the driver's specs and you'll be one happy customer! Waiting a month may seem like a long time but once you get it, it's well worth the wait. As the case with most bassheads , I plan on doing and upgrade soon, and I'm with Fi car audio for life ! Hmmm SP4 next? Or I had a dream that some BTLs would somehow start being assembled ! :) Anyways these subwoofers are quality first built by some of the most stand up knowledgeable guys in the business !
Thanks, Justin aka Jakmagic "SMD & SSA"
Posted by Unknown on 15th Mar 2015
I love the sound quality so much that when I wanted to get louder I wasn't willing to sacrifice the sound quality so I'm getting a second one
Posted by David on 26th Feb 2015
So far so good! They sound really good and theyer loud as hell.
Posted by Accord9thgen on 2nd Feb 2015
Words can not explain how pleased I am with FI they have Great Quality Products and their customer service is EXCELLENT!!!! All I can say is I am truly amazed at how great it sounds (Youtube does not do these subs any justice cause the mics cant handle the loud music so it distorts it) I do not have it in a box that is built to the specs because I plan on getting a second Q soon. And also people keep asking me how many subs I have or if I have a 15 or 18 and when I tell them its a 12 they don't believe me :)
Posted by michael rende on 9th Dec 2014
Look, im an audiophile. I read every review on this website as well. Ive heard everything from kicker comp vr to infinity kappa perfect series subwoofers all the way up to twelve 12" woofers boxed off in a station wagon. But seriously. This sub is accurate. Tight. Loud. Amazing. I have mine set up in a sealed box that is braced and insulated with a 1500 watt amp and it sounds amazing. I build my boxes by hand to spec so it just sounds perfect. You cant get anything better this the sound quality is unfathomed.
Posted by vincent on 9th Oct 2014
When my jlW7 surround finally failed I was on the hunt for a quality replacement. I did as much research as one could do. I wanted to keep my money here in the us and wanted to deal with someone who knew what they were talking about. Let me say these are the guys! After recieving the FI Q 12, let me say the sound quality is awsome. I had listed to the jlw7 for 10 years, and after putting the FI Q 12's in the same ported box I was blown away. The differance is really night and day. I am using a rockford 2500 to drive the subs and they have no problem. Let me also say the customer support I recieved from Nick was just as good as the product.Thanks again for a truly awsome product.
Showing reviews 1-10 of 37 | Next