Subwoofers / Speakers

i have one dual voice coil 4 ohm sub. i wired it to 2 ohm. i checked the resistance with a DMM and the read out i got was 2.5 ohms. is this normal? also when setting my gain should i use the formula 500 watts x 2 ohm = sqrt (1000) = 31.62 or should i do 500 watts x 2.5 ohm???

more power??

Hello, I am in the process of upgrading the audio system on my 2002 Maxima. My setup is: Rainbow CS 265 X-Plain Pro Component (Fronts) Power (Peak=120W & RMS=80W) @ 4 Ohms JBL GTO638 (3-Way) [Rears] Power (Peak=180W & RMS=60W) @ 2 Ohms 2 Image Dynamics IDQ 10" subs Power (Peak=500W & RMS=250W) @ 4 Ohms (Dual Coil) Kenwood X997 Headunit Power (Peak=50W & RMS=22W) @ 4 Ohms ESX Quantum 604 (4 channel amp) for the speakers Output Power at 12V: 4 x 60W @ 4 ohms 4 x 90W @ 2 ohms 2 x 180W @ 4 ohms bridged 2 x 75W @ 4 ohms bridged "TRUE MONO" 2 x 120W @ 2 ohms bridged "TRUE MONO" 2 x 180W @ 1 ohm bridged "TRUE MONO" ESX Quantum 1752 for the subs O…

this might be a dumb question, but can u wire dual 1.4 ohm speakers to 1ohm or do you just have to wire to .7- if you have to wire to .7 can you explain how to do that please?

So im building a box for 2 18" subs for a drummer of a band, it will only be used to reproduce the kick drum, and maybe the bass guitar. But what subs should I use? I don't want some 150 watt 18" crappy PA speakers, what subs can I use for this, he will probly be putting out 1000-1500 watts on the amp he will be using for the subs. Also should I tune the box higher or keep it at around 35hz. The band plays rock music, and im used to building box for cars that play rap. Thanks.

I got a 15" in my saab 9000. it sounds unreal. but my problem is, my saab broke down (needs a new head gasket = about $2000) so i got some time before i get a new car/get it fixed and am trying to find a way to either sell my 15 and get a 12 (or 2) or trade someone. If i were to sell it, what do you guys think would be a good price? i got it this summer and have been very nice to it. sounds great, but i like the sound of 12's a little better (the 15 is just a little bit to low for a lot of my stuff.) but for the stuff that is low enough, it sings. def wanna stay with si

Well were do i start... lets see i currently have a nINE.1 running my 12" mag d2... this month i will be ripping my car apart to deaden it >_< that mag rattles my car like crazy... anyways... im thinking of getting another 12" mag for sure also i have the thought of possibly getting a total of 4 and just taking my rear seats out but my main question is should i get new amps when i get my other mag or if i go with the 4 should i change my amps out?? or just buy some more nINE.1's this wont be for like 2-3months because 3 mags arnt cheap plus the cost of amps...

Hello guys, well its been awhile since ive been in here. Im kinda outta touch with what new and whats good. So right now I have 1 15" Fi BL on a Sundown Saz1200.. i think its a SAZ, ill double check when i get home. I love this sub its great! since Im good with my sub, its time for me to move on to my door and dash speakers. My motto is I want good quality products, I dont really care about looks, plus they wont be seen anyway. I remember years ago when I got my BL asking about Sundown and people saying that they didnt put their money in looks they put it in the product. well thats what im looking for with my speakers. Im looking for the best bang for my buck, its not all…

anyone know where i could find some foam so i can repair it. they are the older 10", i just want to fix them before i get rid of them.

whats the best box to use ported or sealed? , how much of a difference is there?, what should it be tuned to? and what size? thanks also any one have a video of a mj-18 in action thanks again

Looking at treo ssi 12 or ssx 12 are either of these decent subs?

Hi guys, my first post. Anyways, I currently have 3x MB Quarts PW 302 subwoofers powered by a Rockford Fosgate 1501BD mono amp running at 1.3 Ohms stable. The problem is, I really don't like the sound quality / bass from the MB Quart subwoofers. Now I'm considering replacing them for 3x 12" SI D2 subwoofers. Will I be better off with those subwoofers? And are they better with bass and tight response in contrary to the MB Quart subwoofers? I mostly listen the following music: Techno, hardtrance, hardstyle and hardcore. Which all need a good low/deep bass but still very accurate and responsive. Help please. Thanks.

right now i have a decent setup which contains. (2) rockford fosgate 450.4 amps (puts out 225 rms to ea. sub when bridged) click here (2) mtx Jackhammers (400 rms) 6x9 Kenwood Speakers (125 rms) i plan on selling my mtx subs and upgrading to (2) 15 inch subs. i want louder sound. higher lows. and an overall higher spl. correct if im wrong but i believe 15 inch subs are louder then 12 in subs. so heres my question. since CRUTCHFIELD has a BOGO on their subs. i plan on buying ethier the rockford fosgate 15 in sub (200 rms) click here or polk momo 15 in sub. i can buy dual voice coil or single voice coil.(400 rms) click here price is the same so that doesnt matter. just wa…

I've been looking at the Lanzar OPTI1233D series subwoofers. Specs: * Auto speakers feature custom tooled die-cast aluminum basket * Car subwoofers feature black laminated pulp cone * Oversized 2-inch foam surround * Dual 3-inch high temperature voice coil * Three (3) 125-ounce high density barium ferrite magnets Specifications: * Power: 3,000 watts RMS/6,000 watts peak * Frequency response: 50Hz to 300Hz * Impedance: Dual 1.2 ohms DVC * Efficiency: 87dB (1W/m) I thought Lanzar was usually pretty crappy but these actually look like non-mainstream woofers. if they are any good for 290 dollars they're not very bad.. if they actually handle …

I have a 08 Tundra that I want to push two 10's in a ported enclosure the SD's would save me some space but my issue is I don't mind losing some leg room for the SA's but will my Arc Audio 2500 XXK at 1150 watts of clean power be enough to push SA's? or will It push the SD's more efficiantly. In other words what is better for this amp SD's or SA's this thing is new in the box I've had it lying around for a while it's a good amp and my budget can't afford a newer more powerful one

I wanted a 15" D2 so bad back in the day when SI got robbed Now I just realize they now produce them, which makes me very sad. Why? I recently ordered a 15" XXX and it should be here very SOON. Now the question is, do I use it for a while then sell it and get a D2, or sell it brand new un-opened? Either way I lose money

OK I bought a SI magnum 12" a while ago and i;ve never really had a proper look at the si website my woofer is confused. it has the basket of the newer magnum yet the cone of the older version the magnet also looks to be off the older version, can anyone identify my baby? the only clue to its previous life is efmax's email address written on the box oh, and hi, my names tim

i was just wondering what the best 12" subs i could buy for no more than $350 each would be that can take 1kw rms daily? i am looking for a hybrid of sq and spl ... i listen to hip hop and techno ... i love my lows but i also like that punchy techno bass ... my icons seem to be very picky with music choice ... some songs get real loud while others sound less loud than my 4 old 12s running off of 1.3kw rms total ... the subs will be in a 5.7 cubic ft enclosure

Ok, this is weird. I have an 18" Ascendant audio Sub. It has been working well for months since I bought it, however just recently while I was driving around (not bumping hard, just normal playing) it "stopped" working. There was no wierd sounds, static, it just stopped playing. I kept driving home since I figured the amp fuse might have blown or gone into protect mode , which would have been no big deal. However after looking at it, and testing it, I think the amp is fine. I don't have a DMM so I took a home stero speaker, wired it to the amp just to see if I got a sound from the speaker and it worked fine. However even after Rewiring my entire amp and sub, the sub sti…

booth are terrific subs in my opinion. are they in the same class ?do they have a particular application?

I picked up a Old School Memphis 1500 today and was wondering what should i pair it with. I mostly want SQ but also want my sub to be LOUD. I listen to all types of music, mostly rap but also R&B, rock, and death metal. I was thinking of going with these subs: 1 Memphis Mojo 15, 1 AA Havoc 15, or 1 Orion HCCA 12.

which do u think would be better SQ and SPL wise? both would be in 2 15's and have a Hifonics BX1800D amp on each. i just dont know if 2 15" RE XXX's would be better or if 2 15" Brahma's would be better...

What does inverting the subwoofer do for performance?? Is this completely cosmetic or does it do something differently than normally mounting the sub?? Also, How can you mount a sub backwards if the trim piece only fits on one way?? Is there a different trim piece needed to do this type of mounting?? Thanks everybody.

Is it possible to just replace the surround on a sub, let's say Xcon? Can you do it without having to actually do a full recone?

I wanted to make use of my DD mids and put them in the burb doors. I dont have any tweeters or a crossover so i contacted upstage audio about some CDT ones. He offered me the tw-24 tweeter with 456 crossover for a nice price. My question is, will my DD's with a dcr of 3.5ohms pair up with the 4ohm tweeter and crossover without any problems ? He also offered me an orion P series crossover instead of the cdt one. I have no idea if the Orion would be better. I think the Orion mids have a lower dcr, somewhere near the DD's...could be wrong though please excuse any spelling errors, i cant get it down pat today for some reason