The time is rapidly approaching........Sub options please....

brettw22

So I'm getting to the point that I want to pull the trigger on a sub. I have the SR6500's so I'm looking at the new subs.

I don't know if there's a sound difference between Single or Double Voice Coil, or what the advantages are. I remember reading about it briefly somewhere, but I can't find it.

I'm thinking (2) 12's, and need to figure out which amp best would work.

Muchas Gracias Peeps.

audiobliss

There are no sound differences between SVC and DVC. The sole difference or advantage of one over the other is your difference wiring and thus load options. Which you want depends on your setup, i.e. how many you want to run, and how many of what amp you want to use.

MacLeod

Bliss is right, there is no sonic difference between SVC and DVC subs. DVC subs allow you to run an amp at 2 ohms mono with a single sub which you cant do with a SVC sub.

If youre wanting dual 12's then I highly suggest a pair of MM2124SVC's run off the Polk 500.1

You could also wait for the SR's to come out in a month or so.

neomagus00

i'd wait for the SRs... now, they can pretty easily take a 500.1 each, so you may wish to look into other companies for amplification, just to save some dough and trunk space... which company depends on your budget...

deepinya

Are there any disadvantages of using 2 ohm rather than 4 ohm?

audiobliss

2 ohm would require a stouter amp and, conceivably, at some point you might want to consider upgrading the charging system because of the extra draw. But besides that and extra heat (and the need for larger wiring...which isn't really a problem), there are no disadvantages.

MacLeod

You have to match up the loads to your amps.

Say youve got a Polk 500.1. Its capable of running at 2 ohms mono all day long but you only want to run a single sub. Therefore youd get a sinve sub with dual 4 ohm voice coils and bingo youve got yourself a 2 ohm load and getting the 600 watts from that amp.

Now say youve got only one sub and its a single 4 ohm sub and you still need 600 watts. Then youd just get a stereo amp that puts out 600 watts at 4 ohms mono and be done with it.

An amp making 600 watts at 2 ohms will draw no more juice than an amp making 600 watts at 4 ohms or even 16 ohms. 600 watts is 600 watts.

As long as youre amp is capable of running 2 ohms mono there is no disadvantages to it at all except for a little more heat.

PoweredByDodge

wait for the SR's so that 1) everything matches cosmetically... and 2) because they're going to be a great sub that will perform at a level matching your SR components.

amp wise -- go with C500.1's or C300.2's -- both giving you about 500 x 1 watts into 2 ohms or 4 ohms respectively. go with two single 4 ohm coil subs or dual 2 ohm coil subs and snag two 300.2's --- do dual 4's and get 500.1's...

brettw22

Ok.....so the sub's are going to be hitting the market shortly and I'm in the mood to spend.......

I'm getting the SR Subs....I'm thinking 2 12's because really, the diifference between a 10 and a 12 isn't that much.

I need further chit-chat to clarify one or two subs, single or dual voice coil, and which amp to go with which combo of subs.......

MacLeod

Get a pair of 12's. A single will be best for pure SQ by blending better with the midrange but having 2 will give you extra oomph for when you feel like some spirited listening.

The downside is these things are gonna be power hungry. Youll need 1000 watts RMS to do them justice which means mo' money.

Unfortunately, Polk doesnt make a single amp big enough to handle 2 SR 12's so you can either get 2 500.1's to run a pair of DVC subs or a pair of 300.2's to run a pair of SVC subs.

If you want to use only a single amp then then youll need something like this MTX 800 watt amp which will easily exceed 900 watts or if youre wanting more juice, step up to this 1000 watt MTX monster which will definitely be all youd ever need.

If however you dont want to deal with an amp that big or give up the room for dual subs and that 4' long amp, then stick with a SR 12 DVC and a Polk 500.1.

brettw22

The other part of this is building a box. I can't imagine that I'd have a hard time cutting and putting together an MDF box for those things, but I don't know what specifically is involved because I'm sure it's not quite so simple as (Mac would put it) 4 sides and holes for the subs to be put in.........;-)

exalted512

its not hard at all if youre doing just a plain cube box. You might want to check out a prefab though if youre going to do a single 12. Probox makes extremely good boxes that arent priced bad.

But I can give you exact dimensions of a box if you want to do it yourself. Polk probably has some online as well
-Cody

brettw22

I'm thinking the 2 12's r\facing the rear of the car right behind the rear seat. I haven't taken any measurements for the what size I need for the 2001 Honda Accord. I was also thinking of putting the amps on the other side of the trunk opposite where the 400.4 is mounted for the amp(s) to power the subs.

deepinya

2 12's in an accord, good God!

You guys think a 500.1 will be enough to drive one 10" sr sub?

brettw22

I figure that it'll ake the trunk look balanced to have 2 in there instead of one.....

MacLeod

2 is a good choice. For strict SQ purposes youll never need more than 1 but everybody, every once in a while, likes to crank it up and enjoy some big bass. This way you can have the best of both worlds.

Have you thought of the new DB2122?

neomagus00

MacLeod wrote:

2 is a good choice. For strict SQ purposes youll never need more than 1

i'd beg to differ here, even though it's slightly beside the point - i have to run my sub pretty hard, and at medium-high and above volume levels, i can start to hear the non-linearities in the sub (WELL below xmax, but still mildly annoying). i'd like a second, just to cut my excursion (by a factor of 4 for the same SPL, no less)... just a thought

MacLeod

Well it depends. If you take a single 8 with 150 watts, yeah that aint gonna be enough. But a single 12 with 500 watts will be plenty for SQ. Bass isnt supposed to be any louder than the midrange and you dont need as much as you think.

neomagus00

nah, i disagree... for MY purposes - that is, balanced bass, bass that sounds like real music - i occasionally want more than i have, and i have 1300 watts to a 12...

PoweredByDodge

<---- 3,000 watts rms of subwoofer power at my disposal.... only gonna be using around 2000 of it though... but oh well.

thats what i get for going with 3 ohm subs.

audiobliss

PoweredByDodge wrote:

<---- 3,000 watts rms of subwoofer power at my disposal.

*grieves*

exalted512

PoweredByDodge wrote:

<---- 3,000 watts rms of subwoofer power at my disposal.... only gonna be using around 2000 of it though... but oh well.

thats what i get for going with 3 ohm subs.

weak...ill have 4000
-Cody

deepinya

Yeah but my **** is still bigger!!

neomagus00

wow... just... wow...

brettw22

Deep can always be counted on for the minimally to nil functional comments........go you.

Mac, I had typed a response from work, but it never made it for some reason.....

I can't believe that you're suggesting that I do something as blasphemous as putting DB subs in my trunk when I have gone to great expense to brandwhore myself with the SR line.....I'm hurt........truly. ha.

I do want to iron out exactly what I'm getting and then I can look at boxes. I remember for the press releases they said something like a .97 cubic foot box, which seems incredibly small for something as large as those SR subs are going to be.....

neomagus00

.97 for a single 12 is actually kinda big for many car subs

if you want help with boxes, i'll be free to design them from the 20th to the 23rd of this month - 4 day weekend w00!!!! (no offense to your crafting skills, but i'm better than prefab )

exalted512

if you say so
-Cody

deepinya

brettw22 wrote:

Deep can always be counted on for the minimally to nil functional comments........go you.

Well feel free to add me to your ignore list....pretty simple huh?

People compare horsepower, watts, speed, mhz, bandwidth....its all a **** contest.

Its all in fun...

Now back to business, whos got a ruler?

deepinya

Neo, since you are offering up designs, whats the smallest box I can get for a momo 8" sub? Outer dimensions is what I need.

98thumpin

if you want an awesome sub for a price of alittle over 300 dollers go with the db212-2 it rocks i heard it in my buddies car its f ing lous and it also has a deep rich tone to it, but it will punch your chest in if you let it, a db212-2 with a c500.1 monoblock

MacLeod

Brett - Dont misunderestimate those DB2122's! They are incredible sounding subs with a whole Time Life Edition of output! I recommended them because A) theyre a simple drop in installation, they come in a gorgeous (properly constructed) box and C) sound great.

But if youre set on the SR's and dont mind building or having a box built then they are certainly an excellent way to go.


As far as box sizes go, its actually a .9 ft3 for the SR12 and .7 ft3 for the SR10. Those are about ball park for subs that size. Car audio subs are designed to work in smaller enclosures do to the constraints on usuable space in a car.