I currently run the GB10's, GB25's, GB2510C's and GS693's (as dedicated mid bass). I also own (but have yet to install) GS42's for a center channel and GS62's for rear channels. I have also owned (but have since sold) a pair of GB60's. All speaker were purchased from
Crutchfield with the exception of the GS62's which I purchased on
Ebay as a result of a forum post over on
DIYMA.
The GB line is VERY nice…solid design/build quality and they sound the best 'right out of the box' than any speakers I have used before…which is to say they seem to require less processing to sound he way I like compared to other products. I use the GS693's as mid bass drivers but I have listened to them full range and they sound very clean and balanced. I am also a big fan of the overall aesthetics of the AF products…they look clean, not-frilly, no bright colors or goofy markings…it's nice that a car audio product manufacturer took a moment to add a touch of class in the design of the speaker. The look really echoes the products performance; no nonsense, clean and refined.
But it's not all sunshine and lollipops…I do have a couple gripes…the first may be maybe a design issue…the GB25's have a TINY hole to insert wire, requiring really small gauge wire to be used. The GB25 also incorporates hex-head inset screw-down terminals (which are usually a high-end option and excellent choice). This makes for bad combo…at least it did for me…as soon as I tightened down the screw (just a tiny bit) the set screw would cut through the wire. I tried some very high quality wire and would still cut through it…I even tried 'tinning' the wire first (which was a real bi*th due to the aforementioned tiny wire hole) and still managed to cut throughout the wire…and I WAS NOT over tightening. I eventually found the tightening 'sweet spot' and they were all set…for a while…
…which leads me to my second gripe about the GB25's…this may be a QC issue…one day I noticed one of the the mids was sounding scratchy…after much troubleshooting I found that one of the screw-down terminals on the outside was making intermittent contact with the inside solder joint (just inside the basket). I had to remove the little +/- label to expose the solder connection and I soldered the wire lead directly to that, bypassing the screw-down input. I did this to both terminals of the mid and have had no issue since. Later on down the road the other mid developed the same issue and I remedied it the same way, soldering on the speaker wire leads.
The issues aside the GB25 in particular is a seriously good sounding speaker…I'm running mine in pods that are only about 1.5 cups of air sealed…yes about 1.5 CUPS…that's tiny…and they sound fantastic! I'm running them with 100 rms per channel in conjunction with the GB10 tweets both running through the GB2510C passive crossovers. I have the GB25's high-passed at 315hz @ 24db.
Here are a few threads with pics of some of the equipment installed:
http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/626818-audiofrog-audiomobile-jl-audio-knu-concepts-false-floor-sub-enclosure.html
http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/626708-audiofrog-gb10-gb25-pillar-podz.html
http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/617930-audiofrog-gb10-gb25-dash-podz.html
My current system has the GB10's in the A-pillar, the GB25's in the sail, the GS693's in front door factory location, processor is an Alpine PXA-h800, subwoofer is an Audiomobile MASS 12 dvc all being pushed by a JL HD900/5. Soundstage is 2 channel stereo.
I just finished gathering the equipment for the next phase in my systems evolution. I will be moving the GB25's back to the upper door location and the GB10's back to the A-pillar podz(see pics in threads), I will be adding a pair of GS62'sin the rear door factory location for rear channels, I will also be adding a single GS42 in the dash for the center channel. I will be replacing the !2inch MASS with a 15 in TC Sounds TC1000 dvc. I will also add a second JL HD900/5. Each of the seven channels will get a dedicated 100rms (Lt Ft high, Lt Ft low, Lt rear, center, Rt Ft high, Rt Ft low, Fr rear) and each coil of the sub will get a dedicated 500rms from each channel of the HD900'5's for 1000rms. The processor gives me the choice of Dolby Pro Logic II 5.1, DTS 5.1 Surround, and Alpine 'Euphony' 5.1.