cobra93

I will go back in this thread t try and answer your questions the best I can. This all started with a simple question "Would mounting mid bass speakers in this location color the sound in the 75 -250 hertz frequency range?" I was referring to placing them behind the door pocket in this picture. There is a black, separate piece of plastic that forms the back/inside pocket that would be removed. The sls would fire into this chamber. This has snowballed from there. I will reread the comments Adrian posted as it has been a while since it was posted. I'll need a few to make this as clear as I can. I will also try to summarize the best I can with where I'm at now and how I got to this point.

I just read the link you posted, I'm still trying to get my head around allot of it, but a very good read. Thank you. Great link, there is a ton of information on that index page. Thanks man!!!! That was a great read. I still have to find out how two 4 ohm drivers on a passive crossover present a 4 ohm load (static) on an amplifier. I don't understand that one, at all.

Yes, the sls's are subs. In the .15 c.f. sealed boxes I had them in they can still get low, I'd guess that 45-50 hertz isn't a problem, even lower. I believe some of the tracks I was listening to reach down to 30-35 hertz and they still sound great. I'm fighting with the idea of playing them really low, because I love up front bass, but I'd miss getting kicked by my subs (I'm going back to my eclipse 88120 ti dvc's btw). If I have the sls's playing to there limits and turn the subs up I'm afraid I won't hear them destroying themselves. The fr88's> 3 months ago I felt the need to pull some 1,500 - 2,500 out to make them sound great, this last time I didn't. I haven't spent near enough time with them, that's for sure Steely Dan sounds fantastic, Billy Joel sound a little hollow, Killswitch engage even sounds good, but Avril Lavigne will will rip your ears out through you eye sockets. How are you doors coming along, any progress?

I use mapquest, . I'm tired of flash and gadgets in place of quality and function. How's the enclosure coming?

having the same issue with my fullrangers up on the dash (im running a peerless 3"). some stuff they sound good and then too in your face. i dont remember, maybe i missed it, but can you fit larger drivers in your door. if your willing to go with 2 6.5s per side i assume your willing to do some modification. how about an sls 8 or 10? (could save you some cash) I don't think I can get an 8" in the door. The window track closest to the hinges gives me ~ 7" to play with. Earlier in in this post I mentioned the exodus anarchy's, they look to good to be true. sandt38 recommended I also look into css sdx7, among other drivers. The anarchy's and the sdx7 both have craploads of excursion to possibly make up for there small size. When I e-mailed exodus I was told to put them in the smallest enclosure they'd fit in for a 75 hertz high pass. I've been thinking of trying them with a large format tweeter in a 2 way instead of the full range on the dash. After playing around with the phase, and replacing a tweeter on the xr-570's in the door now, I'm amazed at how wide and high the stage is with no processing at all. At $85.00 a piece I may give them a shot. The downside is they're 8 ohm drivers and have a low sensitivity rating. I don't really know what to do at this point, kind of in limbo at the moment. I may keep looking until next spring and hit it then. I'm waiting for a good deal/price drop on pioneer dex-p99rs, it would certainly simplify tuning crossover points, phase and level adjustments.

Thanks for the compliment. I did get the amp running well, I wired the subs wrong. One of the spiders glue joint-to-frame broke loose yesterday after about 2 songs. I'm going to do the epoxy thing to strengthen all of them. I still have to order some grills for the fans. I was thinking of these> on the amp working!! I like the look of the grills, should be a nice compliment to the face of the enclosure. Thanks again sefugi. The amp and the subs are "doing work" pretty well know. I think I've got the crossovers set pretty decent now. I'll try to get a video up tomorrow or this weekend.

Thank you!

Thanks, Mtopper! Not unless I have to. I am planing to put the best battery I can under the hood for starters.

EDIT to the above post : The peerless sls's are 4 ohm drivers peerless sls #830946 I went out and listened to the 2 pairs of speakers, so much to process. I raised the crossover on the fr88's to 250-300 hertz. The fr88's are so different sounding then the jl xr-570's that I must change my position of my last post. I believe the sls's have more output and have more still to give then the sds's. The sds's sound a bit hollow, but not to shabby for a $10.00 speaker. I'm not able to "easily" adjust the crossover on the fr88's due to the location of the amp. The 88's don't seem to sound "right" by comparison to the 570's. Too mono sounding. I assume the fact that the drivers side a pillar is too close without some level and delay is the main cause of this. It could also be the separation of the drivers as well. I'll have to dig up my other jl 300/2 so I can put it on the pass. seat and be able to adjust them both on the fly. I don't know if the 88's/sls's need a higher or lower crossover to sound more "cohesive". At this point the 88's are great on some material and too in your face on others, also hollow sounding. One thing is for sure I definitely will need 2 sls's per door, in a sealed .3 c.f. enclosure to possibly reach the mid bass I would like to achieve.

Wow, it's been a long time. My work schedule since my last post sucks to say the least. I've been working (6) tens, then laid off, then nights then laid off and so on. Yesterday I finally had the time to listen to the 2 sets of mid bass speakers, or at least what I have to try as mid bass speakers. To sum up: I have a sundown 125.2 to power the 2 or 4 speakers. I built a .15 c.f. birch plywood sealed enclosure to test the 2 pairs I have now. I'm crossing them in the 75-250 hertz range, that could change. The 2 pairs of speakers I have are: peerless sds # 835004 and peerless sls I'm going to put the fr88's back on the dash today and give the both 6-1/2" speakers a chance to see what they can do. Yesterday I turned the H.P. filter on my jl xr-570 component coax to ~250 hertz In the sealed box the sls's sounded quite good, however they seem a little slow, but have a more full sound to them. The sds's ($10.00) sounded a bit quicker to me with close to the same output, I'd say the sds's edged out the sls's. I realize the sds's are 4 ohms (89.5 1W/1M) and the sls's are 8 ohms (87.2 @ ?). I don't know if the sens. and ohm load is enough to account for the difference in output, but I prefer the sound of the sds's. I guess that puts me in the distorted mid bass category, I'm not sure. I hope this gives some insight to what I want in a mid bass and can help you recommend some speakers for me. I don't know when I'll be back to work, so I'd like to stay under $100.00 per driver if possible. Btw - When I was building the sub enclosure/amprack I noticed the pass. side tweeter was blown. I replaced it with a jl tr silk dome from an old set of 5-1/4" coax. I played around with the phase, when I flipped the phase (rev.) to the drivers side tweeter the whole stage opened up to my left and the center image was damn near in front of me. They sound pretty good, but they're in the doors right now. The doors are the only place I have to place some mid bass (6-1/2") they have to go.

Thanks fro the info. I'll wait to install them. As for the mid bass, no not killer, yet. Hopefully soon. I waiting to see how J-roadtatts doors are coming, Epic killer mid bass in his car!

Yes Sir, seems we all have issues doing things in moderation. The Box is going down this weekend! I will take LOTS of pics for you sluts. Yes we are!!

Thanks pipes!

Personal experience or because of the spider that came loose? Just curious. I'm listening to some mid bass speakers today so I'm not in any big rush anyway.

Truly Awesome skills J, especially knowing there's no do overs. That's Ball of steel in my book.

I epoxied the one spider back down, then epoxied the top (suggested reinforcement) and will reinstall them all tomorrow. I hope that was the last if the "issues" I'll have with this setup.

Thank you! I like it as well, but it's now a rolling stereo, err vibrator. I've toying with the idea of a blow thru in order to reclaim some space.

Thank you Sir.

Thanks for the compliment. I did get the amp running well, I wired the subs wrong. One of the spiders glue joint-to-frame broke loose yesterday after about 2 songs. I'm going to do the epoxy thing to strengthen all of them. I still have to order some grills for the fans. I was thinking of these>

I'll make this short. A long time ago in my brothers mustang, I bought him a Kicker xs50 and 4 - 8" comp vr's (dual 2 ohm) , I did the same thing, but the spring terminals are 90* apart on the vr's. I believe there was consumption of alcohol involved that at that time. :drink40: I watched the video on strengthening the spider landing a few minutes ago. If the spider has already broken loose, should I epoxy the bottom of the spider first then fill in the top roll? I believe that's what I'll end up doing, unless I'm told otherwise.

Well, it's confirmed. I'm an idiot, somebody drive over here and give me a "Gibs" (ncis) slap on the back of my head. I pulled the woofers out and wired both coils properly this time. The amp didn't go into protection, but I listened to 2 tracks from Billy Joel and one sa8 started rattling. I pulled it out and found the spider had broken loose. :suicide-santa: :suicide-santa: I'll look back at the thread Jacob stated to fill the outside land with epoxy due to this issue. I might as well do all 4 now rather than later. I checked all 8 coils when I had them out, 4 coils measured 1.7 dcr and 4 measured 1.8 dcr. Thanks for the replies everybody!!

I checked the DC RESISTANCE of 4 - sa8's this morning ( 4- D2 ohm, each subs coils in series with a 2" jumper wire, all 4 subs in parallel of the other coil) , my meter reads .6-.7 with 1 wire from the amp removed from the box terminals. I believe they are wired correctly. I may pull each one out and measure each coil individually tomorrow. I looked back at the presale thread and Jacob lists the DCR of a D2 sa8 in series at 3.28 (1.6 each). My meter could be off a little, they should read .8 total by the info in the presale thread. Your thoughts ? SON-OF-A.........I just read what I wrote. I am only wired to half of the coils!!!!!!! :suicide-santa: :suicide-santa: :suicide-santa: :suicide-santa: :suicide-santa: :suicide-santa: I really hate to admit when I screw up, but I'll own up to my mistakes! Somebody check me, to make sure. The coil on the left has a jumper, the coil on the right connected to the amp. Wouldn't that be a .5 ohm load? If it is why does my meter read .6-.7 DCR?

double post, sorry.

So I've got 2 for ohm load so far. The battery will happen soon regardless.