EARTHQUAKE Sound VTEK-693 700W 6x9-inch 3-Way Coaxial Speakers with PistonMax Technology (Pair), Black, Silver

To start you need a good amp for these with 100-125wrms@4ohm each speaker to benefit from their full potential and get the woofers flexin’. Anyone that says these don’t produce bass is doing something wrong. They bump with the potential to produce bass you’d get only from a subwooferI’ve been involved with and a car audio junkie almost 25 years now and only getting more into it older I get. I’ve worked at Best Buy I’ve worked at circuit city years back for years in carfi sales, my rides always decked out, worked a car stereo custom installation shop job as installer and currently in middle of goin ham(don’t mind the mess)on one of my trucks that so far I’ve got 12 sets of 6x9’s including three sets of these along with Ds18’s infinities, Alpines, fosgate, Polk audio and that’s just in the rear of my extended cab pickup. Not mentioning the sofar 8 sets of tweeters or 6 other sets to install or front door speakers I haven’t installed or 6 infinity kappa 6x8s or 2 sets of kicker components..(you get the jist). Power for highs supplied with 6 amps including a Japan alpine, a infinity kappa, a kicker 300/4, a audison and 2 Jl audio so no suckafool equipment here.I say I’ve never considered earthquake or would dare put this brand in my vehicle until I came across three used sets of these at different times used off Amazon but after the first set I had a completely different view of earthquake brand and ended up seeking out and luckily finding couple more used sets which I grabbed and would do again and even look for from time to time as I’d recommend over many of the low to mid range models of the big brand name speakers to say the leastThe 3 sets of these I have wired in parallel so each set of 3 is at 1.3ohm bridged on a JL 300/4v3 and installed under rear extended cab seat and when seat is down creating an enclosure with port basically being the area between floor and bottom of rear seats I left open and the bass produced from a few sets of 6x9s is no less than unbelievable.The highs aren’t too bad and one of the tweeters in each speaker is directional to your liking but alone probably not going to win any competitions or sound quality awards but do expect better performance when they’re not facing the back bottom of a seat as mine are. I added four tweeters in between the speakers and when playing with or without them is a significant difference letting me know that they aren’t necessarily too class sound quality but definitely SPL being loud and clear speakers that can handle a good amount of power and tuned properly w/o distortion at cranked up volumes. Ive had them in few locations wired @2,4 and 1.3ohms where I run them now under seat.

Wow. Had to replace my speakers and did so with jbl to match the rest of my components. After 1 month they were shot. And I did ensure the wattage was sufficient. Still they got blown. Yes I like my music loud in the car, and at home and everywhere. But not just loud, needs to be quality. These speakers blow me away. Amazing crisp fidelity with great bass. They crank so loud that my volume is sufficient in the middle. Of course when the windows and sunroof are open I do crank to max and they do not lose quality at the higher level. When playing it low, especially when the wife is in the car😀 I hear full harmonic range and nice bass. Couldn’t be happier.

Brilliant speakers

SUMMARYThe Earthquake Sound VTEK-52 are an OK speaker but are advertised here with silly, outlandish, and patently false claims here on this page (see Fig. 2). Sometimes I despair that merchants have such a low opinion of the gullibility of the general public. I naively believed when ordering these that they featured carbon fiber mid-range cones and silk tweeters; they DON’T! And it’s clear that the light weight of the magnets on these could not possibly support blasting 400 watts through them.But I wanted clean-sounding speakers to replace a blown speaker on my Miata with a stock radio, and figured I couldn’t go way wrong when ordering these, so I kept them rather than go through the hassle of returning them.DETAILSUpon receiving these speakers and looking at the backside of the cones (see Fig. 1), which aren’t metallized like their fronts, it was obvious that they aren’t carbon fiber and were instead fiberglass. In fact, the shipping box for the speakers tells the truth (see Fig. 3): the cones are made of WOVEN FIBERLGLASS. Moreover, the box doesn’t claim that the tweeters are made of silk, as does the claims on this page (Fig. 2 again).The reason silk might be nice is it has extraordinary strength. However, it’s relatively stretchy. These two properties equal what’s called “toughness,” and really, for a tweeter, you just want high “Young’s modulus” (stiffness) and you want low density. The Young’s modulus of silk is around 15 gigapascals (15 GPa). Carbon fiber though has a profoundly high Young’s modulus of 200–500 GPa. The Young’s modulus of individual fiberglass fibers is 72 GPa, which is a fraction of carbon fiber. Still, woven fiberglass matting is still probably stiffer than speaker-cone paper, which is only around 2 GPa, which explains why reviewers are impressed with the sound of these speakers. But carbon fiber—as was advertised here—would have been far superior for a mid-range, as its stiffness would avoid harmonic distortions that color sound and detract from imaging.As for these speakers’ ability to handle 400 watts, uhm… no; not a chance. Back in the 70s and 80s, speakers advertised the weight of their magnets, with 20-ounce (or more) magnets being good for a normal car radio with a modest amplifier. These entire speakers weigh only 19 ounces, so the magnets obviously weigh significantly less than that; maybe around 14 ounces. Such small magnets couldn’t possibly provide the magnetic field required for 400 watts of voice coil acting against it.

These components give you the full range needed to create a balanced stereo system. The crossovers have two terminals for tweeters at 0db and -3db to suit your taste. I tried both and -3 sounded the best to me as tweeter can get piercy which vause ear fatigue, however the silk domes are not harsh.You can run them off a deck yet they will not sound nowhere as loud and clear as when amplified. I'm running noth sets off an NVX VAD10004 (highly recommended amp).I also prepped the door with butyl sound deadening (like Dynamat) which helps the bass and midrange come thru the woofer.I suggest purchasing some 14-16awg OFC speaker wire as the floss it comes with is flimsy yet other than that, a well crafted set.When compared to the stock 6.5" Bose speakers out of my GMC, you can see the Vtek is larger in all aspects. Not sure about the 600 max watts thoand would send no more than 100RMS.

Second set love them

You are not getting bass from these. They are a good mid range. They can handle some power and keep good tones.

Great speakers from a great company!