srinivasadi

iTrader: (2)

Hi guys,

I am planning of putting a subwoofer in my car and my inspiration is from the following setup

https://www.rx8club.com/showthread.p...ght=16psibrick

Unlike the above setup I plan to use only one subwoofer as I am not looking for much bass just something to fill the bass in my existing stock speaker setup. As I can use only a 6.5" subwoofer for this setup I have chosen JL Audio 6W0 8 - JL Audio 6.5" 8 Ohm SVC Subwoofer

http://www.woofersetc.com/index.cfm?...roduct_ID=5514

the specs of which are as follows

# Nominal Diameter: 6.5 inches (165 mm)
# Mounting Depth: 3.5"
# Continuous Power Handling: 75 Watts
# Voice Coil: 1.25" diameter, 4-layer, Kapton former
# Available Configurations: 8 ohm (Single Voice Coil)
# Xmax (one-way, linear): 0.285" (7.2 mm)

Since this is my first project of such kind, I am not sure what kind of amplifier I shud be using for this setup. I will really appreciate if you guys with more experience share your ideas regarding the correct/suitable amplifier to be used.

Thanks

srinivasadi

iTrader: (2)

I found this amplifier http://www.dualav.com/amplifiers/xpa.html , the model I would be interested in would be XPA2100, the specs are

Specifications: *Power output: 50 watts RMS x 2 (4 ohm), 75 watts RMS x 2 (2 ohm), 150 watts RMS x 1 (4 ohm), 300 watts max x 1 *Total Harmonic Distortion (THD) + N: < 1% at rated output *Signal to Noise ratio (S/N): > 75 dBA *Input sensitivity: 200 mV~ 6 V *Frequency response: 20-20,000 Hz *Dimensions: 10-1/3" L x 11" W x 4-1/8" H

* Variable crossover (low / full / high)
* MOSFET PWM Power Supply
* Variable bass boost circuit
* 2-ohm stable and tri-amp capable
* Bridgeable operation
* High and low level inputs
* Bi-color LED status indicator
* Direct wire connection terminals

Do you guys think this will be suitable for the woofer I want? Also is Dual good?

Thanks

srinivasadi

iTrader: (2)

guys really need some help here ....

WikkedOne

yeah that looks like the perfect amp for that setup - but if I were you I would SERIOUSLY think about going with just 1 instead of 2 speakers... I think you will be sorry you did all that work when you don't get the result you're looking for.. and if 2 is too much you can always turn it back a little...

Socket7

+1

A 6.5" "sub" isn't going to move much air. You might not be able to properly rattle your nuts with subbass.

srinivasadi

iTrader: (2)

thanks a lot for replying.... and I will suirely consider using 2 woofers as you said. In case I use two woofers would this amo be sufficient or shud I get something else and if so do you have any recommendations?. Also one more question I have was the woofer is a 8 ohm whereas the max power from the amp is 150W @ 4 ohms.... shud i be concerened?.... thanks again

srinivasadi

iTrader: (2)

I know it would'nt be much ... but I just needed a little more bass that was missing from teh speakers

Socket7

As long as you aren't looking to annoy your neighbors, 1 will probably do the trick. I'd get 2 though, and wire them in parallel, bringing the impedance of the speaker pair to 4 ohms. (Checked my math. It works. (R1*R2)/(R1+R2)=N )

srinivasadi

iTrader: (2)

Instead can I use this one JL Audio 6W0 4 - JL Audio 6.5" 4 Ohm SVC Subwoofer ?
http://www.woofersetc.com/index.cfm?...roduct_ID=2073

Socket7

That one would work for sure in a single speaker config. You could also get 2 of those and run THEM in parallel to get 2 ohms total impedance.


I assume you're just looking to fill in the low end rather the really push it hard.

srinivasadi

iTrader: (2)

thanks a lot, even WikkedOne suggested the same. I will keep the two woofer config in mind. Thanks you guys, I will try and keep you guys posted abt my progress.

seifer51582

the money that you are going to spend for the return that you will get, i would stay away from jl. you will spend less and get more out of an Arc Audio arc 8d4. you will have more cone area than with the 6 1/2, it will fit in the ski hole cover, and you can use one of the new arc mini amplifiers to save even more space. you should be able to do all of this for under $350 and i promise that you will be blown away by the performance

srinivasadi

iTrader: (2)

I want to check out the prices and the specs on these, could you tell me where to look for?

Revvittupp

I'm surprised it has not been mentioned yet that that is NOT a good place to put subwoofers. As close as your head is to those subs, you will probably only hear roughly half their amplitutde. You'd be better off having the baskets come through the ski pass through and put the subs in backwards, firing off the trunk. It may look cool, but it won't be much of a performer. Subs should always reflect off the trunk in most cars, certainly a small one such as ours. A 1080 box is even a bit close not to be reflected...

firebirdude

iTrader: (3)

I didn't read all the post, so pardon if I repeat .

That amp would be perfect for either one or two subs. Which ever you decide. However, if you decide to go with a single sub, get the 4-ohm SVC version of the 6W0. If you go with two subs, get the 8-ohm version and wire them in parallel to present the amp with a final total load of 4 ohms nominal. 150 watts output with either setup.

WVBoosted8

iTrader: (5)

I sell car audio for a living and would stay away from dual :p just IMO. EVERY single part we have ever installed manufactured by dual had to be swapped out for some alternative due to failure. I searched for a low end JL amp and couldn't find any that met the criteria. I am a boston fanatic and would try to get ahold of a boston 8 with a gt20 amplifier.

srinivasadi

iTrader: (2)

I think I am going to use just one sud, tat way I could still remove the storage box in case i need to sometime. And thanks for the response

srinivasadi

iTrader: (2)

Hey, I am skeptical about the Dual but I could'nt find any other amp with fits my requirements like this one did and also since my budget for amp is limited I chose this one, but I am still looking for options, I will surely look for the boston amp. Thanks

WVBoosted8

iTrader: (5)

I like to do it right the first time, especially with a car like the rx8. If you did get the Dual, I would set some money aside later on for a replacement in case it did give out. I haven't messed with the dual amps but their headunits are horrible in a lasting 1-3 days type horrible. For a little added bump to the factory setup I guess it couldn't hurt if it did work out.

srinivasadi

iTrader: (2)

after you told me even I was not very sure about the Dual anymore, I found a blaupunkt amp for the same price range http://www.crutchfield.com/App/Produ...3PCA265&tp=115 let me know what you think about this, the specs are alomst the same as the Dual. Ateast I know blaupunkt is a well know brand so I think this is it. Thanks, I wud'nt have looked if you had'nt warned me abt dual.

Juice

iTrader: (1)

Get this for an Amp:
http://www.sonicelectronix.com/item_...r+ZX300.1.html

And this for a Sub:
http://www.edesignaudio.com/product_...products_id=29

Both are great brands and it won't even put you out 200 dollars. The sub I linked will fit in the pass through width and depth wise and is designed to work in enclosures down to .2 CuF. Only thing you would need after those is wiring and to make the enclosure. I don't think this would even cost 300 dollars all said and done and you would definitely have more output than the JL woofers.

Edit: Forgot to add to get the D4 (Dual 4 Ohm Voice Coil) version. Then wire it in parallel to get a 2 Ohm load on the amp giving you the full 300 watts.

seifer51582

Here is the sub that i was talking about:
http://www.arcaudio.com/productdescr...eries/arc8.asp

And the Amp:
http://www.arcaudio.com/productdescr...125.2-mini.asp

The sub that you are going to want is the arc8d2 so you can series the coils to a 4 ohm load in the 125 mini to feed the full 250 to it. I have played around with a ton of these subs and amplifiers and i think that it will work great in your case because the sub can be ran infinite baffle which means that you do not have to build an enclosure if you do not want to (granted you will get better response with a sealed enclosure). Also, the size of arc amplifier is so small that you can put it virtually anywhere and have it be hidden.

The above mentioned setup will be cheaper but only by about $50-100. If you look at the theil small parameters and compare the two subwoofers alone, the arc audio sub has a sensitivity rating that is 2 db higher (almost twice as loud) than the elemental design with requiring less power to drive it which tells you that it is a much more efficient subwoofer and will outperform the other. These subs are also built for sound quality with their lightweight cone assemblies and tight suspension.

I am not trying to talk down on the elemental design equipment in any way. I am just saying that especially in this industry, you get what you pay for and seeing as how the alternative is slightly more expensive, it would definately be my choice.

By the way, you can pick up the arc8d4 for about $90 and the 125 mini amp is going to run you about $250. Let me know if you are interested in either one.

firebirdude

iTrader: (3)

10db (NOT 2db) is literally "twice as loud". A difference of 2db is barely (if at all) noticeable.

Don't get me wrong, Arc Audio makes outstanding equipment. If it were my choice, I would probably choose Arc over ED...... and I'm a very large supporter of ED products.

seifer51582

actually every 3 db is twice as loud so that would make 2 db pretty close to being 2x as loud

firebirdude

iTrader: (3)

I'm sorry, but you are incorrect. 3db would be the minimum amount that humans can perceive a "noticeable difference". 10db is literally twice as loud.

EDIT: http://www.gcaudio.com/resources/howtos/loudness.html Next to last chart.