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Old     (Raf1985)      Join Date: Mar 2012       07-12-2012, 11:08 PM Reply   
So I know nothing about sound systems and electricity and stuff.

I have a pair (2) pro485s. I read somewhere that they need around 300 RMS or so. I have these amps on hand:

http://www.sonicelectronix.com/item_...4.1000.1D.html
RMS Power @ 4 ohms 250 watts x 1 channels
RMS Power @ 2 ohms 500 watts x 1 channels
RMS Power @ 1 ohm 1000 watts x 1 channels

http://www.crutchfield.com/S-oeGeQtE...ml#details-tab

Will either one of these work? I dont think the lightning is bridgeable so if I hook up each 485 individually at 4 ohms to the amp, they will be getting 250 watts each right?
Old     (bryce2320)      Join Date: May 2012       07-13-2012, 4:23 AM Reply   
I would use the lightning monoblock. Run one wire thru tower to first 485, than parallel (positive to positive, negative to negative) to the other 485. This will present a 2 ohm load at the amp giving you 250 rms to each 485. And yes they call for 300rms each.
Old     (david_e_m)      Join Date: Jul 2008       07-13-2012, 6:19 AM Reply   
The monoblock is not a fullrange amplifier so that is eliminated. The other amplifier will definitely work in the very short term as you will be seriously under-powered and that amplifier will struggle from a thermal standpoint as hard as you will have to drive it.

David
Earmark Marine
Old     (polarbill)      Join Date: Jun 2003       07-13-2012, 7:00 AM Reply   
IF you are not wanting to spend much how about this amp. Full range class D and 450 watts to each 485 when bridged. Also runs in the 200-250 range.

http://www.precisionpower.com/html-v...ps/P900-4.html
Old     (Raf1985)      Join Date: Mar 2012       07-13-2012, 7:41 AM Reply   
Quote:
Originally Posted by polarbill View Post
IF you are not wanting to spend much how about this amp. Full range class D and 450 watts to each 485 when bridged. Also runs in the 200-250 range.

http://www.precisionpower.com/html-v...ps/P900-4.html
If I need to buy another amp, I'm not scared of spending the right amount for a good one. I was just kinda hoping I could get away with not having to spend the money and using what I had laying around.
Old     (wetsounds1)      Join Date: Jan 2006       07-13-2012, 8:16 AM Reply   
raf,

yes, those lighting amps are sub only amps. The freq response is 50Hz to 250 HZ only and low pass only.

If you plan on doing it now, i would highly suggest getting a new amp. the 485 like power and the more you give them the happier you will be.

http://www.wetsounds.com/pages/products/HT4.html

HT-4 is bare min i would go. Bridged does 300x2.

http://www.wetsounds.com/pages/products/SYN4.html

SYN-4 is optimum and our number one set up on a pair of 485's. We have some guys take it to the extreme and run dual SYN-2 to gain the added headroom

But most run the SYN-4 on the 485 pair.

That kenwood is a 4 ch. Same as the HT-4 or SYN-4.

So either way you will be bridging the amps into 2 ch mode. So each speaker will be on its own side bridged.

Page 6 on our SYN-4 manual shows a SYN-4 bridged on a pair of 485's. Pge 11 on the HT-4 manual

Tim
Wet Sounds
Old     (Raf1985)      Join Date: Mar 2012       07-13-2012, 7:40 AM Reply   
Quote:
Originally Posted by david_e_m View Post
The monoblock is not a fullrange amplifier so that is eliminated. The other amplifier will definitely work in the very short term as you will be seriously under-powered and that amplifier will struggle from a thermal standpoint as hard as you will have to drive it.

David
Earmark Marine
By not being full range you mean that its more for pushing a subwoofer than speakers?

How should I hook it up to the kenwood? Originally I had the stock roswell speakers connected to channel A on the amp and a subwoofer on channel B (bridged). Channel A has two sets of wires running through the tower, one for each side. Do I need to bridge channel A and run the speakers in parallel or should I just hook them up directly to the amp?
Old     (murphy_smith)      Join Date: Dec 2005       07-13-2012, 7:29 AM Reply   
I have heard solid things about the PPI amp above. Not a bad choice for the price but I would buy it from an authorized dealer.
Old     (Raf1985)      Join Date: Mar 2012       07-13-2012, 8:23 AM Reply   
Sounds like a syn4 is going to be my best bet then. I'll have to break the piggy bank and order one. Not entirely sure I want to buy 2 syn2 amps.
Old     (murphy_smith)      Join Date: Dec 2005       07-13-2012, 8:31 AM Reply   
Raf - if you are willing to spend a little then the Syn 4 is perfectly alligned with your tower speakers. You will absolutely love it!

I made the assumption that you did not want to spend a little dough on the amp....I shuold have asked instead!
Old     (Raf1985)      Join Date: Mar 2012       07-13-2012, 10:45 AM Reply   
Quote:
Originally Posted by murphy_smith View Post
Raf - if you are willing to spend a little then the Syn 4 is perfectly alligned with your tower speakers. You will absolutely love it!

I made the assumption that you did not want to spend a little dough on the amp....I shuold have asked instead!
I have come to the conclusion that you get what you pay for. I just wanted to avoid spending money all together if one of my amps would work.
Old     (jonyb)      Join Date: Nov 2008       07-13-2012, 10:35 AM Reply   
Syn4 is perfect for the 485's.
Old     (Raf1985)      Join Date: Mar 2012       07-13-2012, 1:43 PM Reply   
Anyone have any of those rubber inserts for the bulky old square style clamps? My clamps didnt have them and my tower is 1 3/4" i believe.

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