| Author |
Thread: Sony amps with polk-mono subs? crazy set-up? |
    
New member Username: Hairball
City of Angels
Post Number: 1
Registered: May-04
|
| Posted on Wednesday, May 05, 2004 - 01:16 am: |
|
Advice appreciated on the following set-up:
-Sony head unit w/CD changer (already owned)
-2 MM-12's, Polk-Momo 12' subs in enclosure 500W RMS, 1000W Peak, 4ohms SVC($99 each)
-2 pr's of Polk dB 650's for front and rear 60W RMS, 180W Peak 4ohms($150 total)
-1 Sony XM-2200GXT 2 ch amp to run 200W X 2 at 4Ohms for subs ($99)
-1 Sony XM-2200GXT 2 ch amp to run the four coax's at 250W RMS X 2 at 2 ohms, left front and rear in parallel, right front and rear in parallel ($99)
I bought the cheap amps as a temporary move until I can afford a better monoblock amp to run the 2 subs in parallel at 2 ohms for max efficiency.
I really just need a 4 ch amp for the four polk coax's, but, again, want to wait to afford a higher quality amp, rather than buy a mid-level amp now. I'll be careful to keep the gain way down at first to power the coax's. I fear this amp and speaker set up at 2 ohms will just blow the speakers too easy, as I tend to crank beyond the distortion point (in the past anyway).
I may be able to get the Polk single channel amp for about $250 to run the subs. Any opinions on that setup?
The coax's take 60W RMS and 180W Peak, so I don't really need a beefy, expensive amp. Any suggestions here?
By the way, the Sony amp specs are as follows:
200 watts RMS x 2 at 4 ohms
250 watts RMS x 2 at 2 ohms
500 watts RMS x 1 at 4 ohms
For the subs, it's clearly not 2ohm stable in bridged mode (with subs in parallel), so I'd run it 200W X 2 at 4 ohms. Is this wishful thinking that it'd be OK for 3-6 months until getting a better amp. I don't need the tightest, hardest bass, just good enough to crank with mostly rock type music, some rap.
Feel free to roast, I know the set-up's pretty hodge-podge. I do need help before I feel free to open boxes and start the install.
Oh, it'll be in a 96 honda civic and I've got all the wiring down, 4ga power cables, fuses, etc.
Thanks everyone. |
|
|
|
New member Username: Hairball
City of Angels
Post Number: 2
Registered: May-04
|
| Posted on Wednesday, May 05, 2004 - 02:03 am: |
|
By the way, I may be able to get a Polk-Momo amp for $200, the 2 channel rated as follows:
Channels 2/1 (bridgeable)
Total Dynamic Power (all ch. driven) 850 watts
14.4 Volts RMS Not Bridged @ 1kHz
4 Ohms 150 watts x 2
2 Ohms 220 watts x 2
14.4 Volts RMS Bridged
4 Ohms 550 watts x 1
I guess one amp for my 2 subs would only be 150W X 2 at 4 ohms.
|
|
| Posted on Wednesday, May 05, 2004 - 09:12 am: |
|
anything sony is CHEAP |
Gold Member Username: Glasswolf
NorthWest,
Michigan
USA
Post Number: 2698
Registered: Dec-03
|
| Posted on Wednesday, May 05, 2004 - 10:12 am: |
|
Polk are nice components.
forget Sony completely. They make nothing but crap for car audio.
no reliability at all and very poor performance.
|
New member Username: Hairball
City of Angels
Post Number: 6
Registered: May-04
|
| Posted on Thursday, May 06, 2004 - 12:02 am: |
|
Yeah, I knew Sony was not a good match for my Polks, so I went out today and picked up a Polk-Momo C500.1 single channel amp today to run the two subs at 2 ohms.
I also got a smokin deal on the Polk C300.2, a 2 channel amp to run the coax's in parallel at 2 ohms. Maybe I'll get another of these 2ch amps so I can adjust the gain between front and rear speakers. Any suggestions on this idea?
$229 for the monoblock, and $169 for the 2 channel, I'm stoked on these prices. |
Gold Member Username: Glasswolf
NorthWest,
Michigan
USA
Post Number: 2725
Registered: Dec-03
|
| Posted on Thursday, May 06, 2004 - 12:50 am: |
|
very nice
|
|
| Posted on Thursday, May 06, 2004 - 02:17 pm: |
|
If you really want it for the rear speakers, go for it, I just ran mine off the head unit. Eventually I upgraded to Diamond Audio Hex S600, which has a rear fill crossover built in, and it is an AWESOME component set. Rear fill sounds nice. I'm pushing it with a JL 300/2. You probably won't notice a difference unless you like the rears almost as loud as the front speakers. The main difference with the component's crossovers was the fact that the frequency range was controlled. |
Gold Member Username: Glasswolf
NorthWest,
Michigan
USA
Post Number: 2740
Registered: Dec-03
|
| Posted on Thursday, May 06, 2004 - 05:18 pm: |
|
here's some useful info on rear fill and the problems with it:
http://p079.ezboard.com/fcaraudiotalkfrm27.showMessage?topicID=38.topic
|
|
