|
|
05-21-2009, 01:04 PM | #1 |
Colonel
218
Rep 2,339
Posts |
2 ohm or 4 ohm Earthquake SWS?
Now that I've got my amp choice figured out and I'm pretty sure I'm going to go with the SWS subs, I'm trying to decide if the 2 ohm or 4 ohm SWS would be best for my application. The amp I'm planning to use will put out either 750W @ 4 ohm or 1150W @ 2 ohm. So that means each SWS will get either 375W or 525W. My first questions is are there any differences other than impedence between the 2 ohm and 4 ohm SWS? My other question is do you think 525W per woofer would pretty much explode them being that they are only rated for 150W? I'm confident they would be able to handle the 375W with no problem since the amp gains would probably be set to minimum anyway. Headroom is great and all but there's gotta be a limit somewhere.
I have run 125W rated subs off 300W before and it was fine. The limiting factor was that the woofer would max out on excursion far before any clipping of the amp was evident. I also ran a 250W sub off 600W and it was the same thing. I'm guessing I would probably be looking at the same issue with the SWS.
__________________
2016 Porsche Cayman GTS - Sapphire Blue / Black Full Leather Interior / Carrera S Wheels
|
05-21-2009, 01:35 PM | #2 | |
Lieutenant General
2258
Rep 12,985
Posts |
Quote:
I think that if that amp is only for the SWS-8 then it is a waste... |
|
Appreciate
0
|
05-21-2009, 01:42 PM | #3 |
Colonel
218
Rep 2,339
Posts |
The amp is a 5 ch and that just happens to be what the sub channel can put out. I can also consider going to a 6 ch that will only do 500W @ 2 ohm for the SWS but then I would lose power on my mids because the other amp does 170W and the smaller one does about 70W to the mids. BTW, the amps being considered are the Audison LRx 5.1k and 6.9. I worked out an awesome combo deal with the BitOne. Getting the 6.9 would only be $100 less than the 5.1k but if you think the 6.9 would be a better fit for the system I would be willing to give up the extra output. The mids are a/d/s 344is and tweeters are a/d/s px concepts. One thing the 6.9 has over the 5.1k is that its all class a/b. The 5.1k is class D on the sub channel.
__________________
2016 Porsche Cayman GTS - Sapphire Blue / Black Full Leather Interior / Carrera S Wheels
|
Appreciate
0
|
05-21-2009, 02:28 PM | #4 | |
Lieutenant General
2258
Rep 12,985
Posts |
Quote:
Personally, I would go with the 6.9 to retain the full stereo effect of the woofers and drive the front/rear/underseat woofers with it; the SWS-8s then should be the 2 ohms version, so you can get them close to their max RMS input (140W at 2 ohms vs. 75W at 4 ohms). The bit one.1 then should be free to be adjusted without choking it to protect the woofers. Are you having any rear speakers in this system? Are you having a trunk sub? The 5.1k looks to me that would be great only for a front/stereo underseat woofer/mono trunk sub setup. |
|
Appreciate
0
|
05-21-2009, 03:02 PM | #5 | |
Colonel
218
Rep 2,339
Posts |
Quote:
__________________
2016 Porsche Cayman GTS - Sapphire Blue / Black Full Leather Interior / Carrera S Wheels
|
|
Appreciate
0
|
05-21-2009, 03:31 PM | #6 | |
Lieutenant General
2258
Rep 12,985
Posts |
Quote:
The bit one.1 outputs just low level un-balanced. However, you can split the OEM HU outputs by using its front to the bit one.1 and leave its rear to the OEM amp. The bit one.1 can take the front two channels input and give you up to 8 channels output in whatever configuration you want. Then you can use the 5.1k as you wish. |
|
Appreciate
0
|
05-21-2009, 03:40 PM | #7 | |
Colonel
218
Rep 2,339
Posts |
Quote:
__________________
2016 Porsche Cayman GTS - Sapphire Blue / Black Full Leather Interior / Carrera S Wheels
|
|
Appreciate
0
|
05-21-2009, 04:00 PM | #8 | |
Lieutenant General
2258
Rep 12,985
Posts |
Quote:
Perhaps it can if its input is high enough. |
|
Appreciate
0
|
05-22-2009, 03:32 PM | #9 |
Colonel
218
Rep 2,339
Posts |
One more question. Where is the best place to get the SWS from? I don't have a local dealer for Earthquake. I know you posted an ebay auction that was a buy it now or best offer but I don't see that anymore. Seems like they are all the same price and shipping is going to be insane (about $40/woofer). If I'm going to end up paying close to $200/woofer, I might look at other options.
__________________
2016 Porsche Cayman GTS - Sapphire Blue / Black Full Leather Interior / Carrera S Wheels
|
Appreciate
0
|
05-22-2009, 04:09 PM | #10 | |
Lieutenant General
2258
Rep 12,985
Posts |
Quote:
|
|
Appreciate
0
|
05-22-2009, 05:18 PM | #11 | |
Captain
26
Rep 842
Posts |
Quote:
|
|
Appreciate
0
|
05-22-2009, 07:10 PM | #12 |
Colonel
218
Rep 2,339
Posts |
Looks like I'm going to go with the 5.1k but the 6.9 is still in the back of my mind. My contact is out of town until the end of next month so I'll have to wait until he gets back to make my order anyway.
There are pros and cons to both. The enormous headroom provided by the 5.1k is hard to ignore but also the fact that the SWS can only do so much has me thinking about the 6.9. If I do go with the 6.9, I can always use the sub channels on the 6.9 to run the SWS as stereo midbass and then add a mono amp and sub in the trunk if I feel the need for more bass. If I get the 5.1k and I'm not happy with the bass output from the SWS, I would end up probably getting another 2 ch amp to run the SWS stereo midbass and then use the sub channel on the 5.1k to run a sub in the trunk. I don't know which would be cheaper or easier to do later but we'll see I guess. I still think the 5.1k is the way to go.
__________________
2016 Porsche Cayman GTS - Sapphire Blue / Black Full Leather Interior / Carrera S Wheels
|
Appreciate
0
|
05-22-2009, 10:54 PM | #13 | |
Captain
26
Rep 842
Posts |
Quote:
|
|
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|