Originally posted by RED WING NUT
I know you made adapter plates for the 6.5 components in your doors. Did you have to do any modifying to the door itself? Any cutting at all or do the 6.5's fit in the hole that's there? Same question on the tweeters. Any cutting on the door involved? Also, are the top 2 screws holding the 6.5 in, the stock holes? It looks like it in your pic. One last thing. These RE8's that you have and other people have talked about, where did you get 'em. Where on the internet can I find out about 'em, and buy 'em? Thanx
No cutting on the truck at all. I had to file about 1/8'' off the metal surround on the speaker at the top and bottom. Not sure if that would mean the same on all 6.5'' speaker brands. It had no effect on the speaker at all. Nothing done to the tweeter. I just could not use one of the brackets that came with it. It would make the tweeter hit the back of the door, so I just hot glued the tweeter into the outer bracket that came with the them and it fit fine.
Yes the 2 top screws are in the stock holes. You have to angle them toward the stock holes a little bit. Once they catch, they go right in. Just drill small pilot holes than drive the bottom ones in. I made gaskets for both the plates and the speaker out of gasket foam from a local shop to make sure there were no leaks.
The 1st site is the RE site. If you click around on things you can find everything you need to know. You will have to call for a price. I got mine from the other site. 2 for $95 shipped. Amazing for the price. The 3rd site has just about everything you would what to know about them. You may have to registor so can do a search to find alot of things written about them.
This is a review of them I had posted right after I installed them.
This is in a 2004 F-150 Lariat Super Crew. I did not want to mess up the look of the front console so I kept my stock 6 disc HU in place and used high to low line convertors. Surprisingly it ended up sounding very good. All I need.
Not much room under rear seat to work with. 6'' at the deepest point. I ended up with .50 cubs tuned to 35 Hz after all displacments. The port ended up being 3'' thin wall PVC aprox. 25.5'' long with one 90 de. turn in it. Not what is rec. for 2 RE8s, but thats all I could get in between the seat brackets. This started out as me just wanting to gain alittle bass. Well I got it and more.
These 8s are unbelieveable. Having competed in the mid 80s with 2 12s, I was blow away at what these little things put out. Because my box was so small for 2 RE8s ported, and not knowing how it would sound, I built 2 boxes, the other was .45 sealed. I tried that one first. Sounded good and I was very pleased, but when I put the subs in my ported box the out put gained was well jaw dropping. This in a .50 proted box how can it be. I was told here and by David at RE that it would be very hard to stop port noise and that my port would be to long for the size box that space would allow. I thought I would just give it a shot and WOW, WOW I sure am glad I did.
Bass is very tight and reaches very low. I hear notes that my 15'' home sub hits. All this with 2 RE8s. Needless to say, I am very happy with my install and would tell any one looking for bass with little areas to deal with to go with these little monsters.
The only other thing I am planning on doing is to upgrade my cheap 4 channel amp to an Avonixx 440.4 to match my other amp. I will stack both where my Avionixx is now.
Here is a real good review of them. Sorry so long. Just thought you would like to know the most you can about the RE8.
Resonant Engineering RE 8
By Loyd "bigbassman" Lowry
Yeah yeah, I know you're all expecting me to have another world-class monster woofer for review, and here I am with a piddly 'lil 8" woofer. The audio world appears to be going through a crazy 8" phase, with multiple companies now building 8-inch SUBwoofers. We're talking driver that can displace more air than most modest 10 inch woofers. With that in mind, I reviewed the new Resonant Engineering 8". A budget minded driver with claims of excellent response and output. And away we go…
Build quality is nice. The woofer uses a stamped 4 legged black basket, with a small depth. The motor employs a single magnet slug with a thin top plate and back plate, which have a golden hue to them. The back plate is also bumped out. The voice coil is an 8-layer, 1.5" diameter, copper coil wound on a lightweight former. The woofer uses a poly cone, with a somewhat soft dust cap. Finally, the RE 8 uses a decently wide santoprene style surround.
Here's the full list of woofer parameters as given by Resonant Engineering, with additional information provided by LSP-Cad
Qms 7.05 Znom 2 ohm
Qes .36 Le .38 m/H
Qts .34 Mms 65 grams
Vas 22.4 liters Bl 7.15 n/A
Fs 28 hz Xmax 10 mm
Re 1.6 ohm Sd 180 cm2
Efficiency .13% (83..2 db 1w / 1m)
Enclosures and Vehicle
For the first time for a Momentum Review, I employ the services of my vehicle, a 1990 4 door grand prix for testing. The woofer was tested in both a sealed and ported enclosure, which is mounted down in the floor under the center of the dash. I used a .28 cubic foot (7.9 liter) sealed box, which had a .707 alignment. The ported box was .45 cubic foot (12.7 liters) after displacement, and used a single 2" diameter round port that was 3.2 inches long, giving it a 33hz tuning frequency. Power was provided by the rear bridged channels of a Coustic 320qe amplifier (gained down to 150 watts RMS into 2 ohm mono). Multiple x-over points were tried, and I eventually settled on 90hz with an 18 db /octave slope.
I was highly impressed with the RE 8's performance sealed. She sounded very good with any type of music thrown at it. The woofer had excellent depth, accuracy, and clarity. I feel that she particularly excelled with hard rock and metal baselines. Each note or line was well defined, and the woofer remained extremely composed even with more than the recommended amount of power on it. My normal testing material went over well. The Eagles' "Hotel California" (Geffen) sounded very nice indeed. Even with low bass intensive music, such as "In Da Club" by 50 Cent had decent punch. I can certainly see this woofer having enough output to content a lot of listeners.
Wow! What a difference an extra bit of airspace, and a port can do! This sub got downright nasty in the ported box. For an 8-inch woofer, she got loud, and stayed composed while doing it. The biggest difference was the large increase of output below 50hz. Going with the ported box gives you a flat response to below 35hz. Whoever says an 8" woofer can't get low needs to check out this sub. Unless space is an utmost issue, I'd certainly suggest the ported design.
This is usually the portion of the review where I give the SPL measurements of the woofer from the Linear X pcrta. I am omitting the test this month, due to time constraints on my end. I'll try to meter the woofer soon, and add the data into the review.
I'll try to make up for the lack of SPL number in this portion. I've found several good things that go along with owning 8-inch woofers and one of them is certainly the price. I took a go at this woofer with some nasty power levels, sines, sweeps, and warbles to establish the woofers breaking point. So I cranked the gain up on the 'ol Coustic amp, which will now provide nearly 300 watts to the 8. Using the sealed box I wanted to find out if the coil could reach back plate, which it did, at 55hz. So 300 watts is a bit much for it…good…so I continued onward. Next off, I tried to find a thermal limit. Using a nasty repeating 100-60hz sweep, I turned the amp loose on the woofer and let her play. After about 3 minutes, and a noticeable drop in output, I shut her down, and examined the woofer. Other than a really warm dust cap, and some of that wonderful VC annozidation odor, the woofer appeared to be in fine shape. After cool down, the coil still checked out at 1.6 ohm DCR. So now we know the woofer is mechanically limited more so than thermally. If RE were to allow some more rearward clearance, the woofer would certainly be suited to at least 300 watts RMS for usage.
While this testing is always fun, I had to do something completely uncalled for. While using the same sealed box, I hooked up my pair of American Bass 1200d amps onto the woofer (2600 watts + into 2 ohm) and let off a single burp at 100hz, just to see what'd happen. Other than a horrid sounding tone, coupled with some loud cracks of the former knocking back plate, she did survive. After another inspection of the woofer to check for a VC offset, everything checked out ok. Currently this woofer still resides in the car for daily use in the sealed box.
The RE 8 is a damn fine little sub. She can do anything her big brothers can, just with a limited amount of output. She sounds great sealed, excels in a ported box, and will provide a user with maximum performance for a minimal price. For an MSRP of $99 (which can be had for under that from a dealer), this is a deal too good to pass up.
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