More Freaking Power!!!!!!!!!

Kosman

I have the LSi system, 15/C/FX (and a Velodyne SPL 800), I am thinking about getting the Outlaw 990 Preamp and their not yet released 790 Amp. If the 790 is like the 770 it should be putting out about 300 watts per channel, all channels driven. Yes MORE POWER! I have read that speakers are not damaged by good clean power but by over-stressing amps and causing clipping to occur. Anyone have any experience running the LSi with enough power to make these 4 amp puppies pump to the limit???

Airplay355

I think you mean 4 ohm puppies, and I also think your ears are going to break before the speakers do provided you have enough power to reach the levels you are asking, and provided you aren't listening to music that is recorded with tons of distortion anyway.

You are right though, it is far easier to damage a speaker by underpowering it and clipping the amp then it is to power the speaker with an amp that pushes more watts then the speaker is rated to handle.

Kosman

yeah ohms not amps, duhhhh, anyways I do not want to blow my ears or my speakers, I just want to get all I can get out of them with clean SCAD or HD-DVD sources.

Airplay355

With that outlaw amp you will be able to turn it up as loud as you want and your speaks will be fine. Just set up your system properly and crossover the little speaks.

Kosman

Hey there Airplay, what do you think should round out my system for the rear surrounds, LSi7 I would guess????? The folks at Polk seem to stuck in the 5.1 age!!!! Nothing on their web site even mentions 7.1.

Airplay355

yup, i'd say lsi7's would work well for rear surrounds....i've never really heard how a full bipole/dipole setup sounded though so i can't really tell you that would sound bad

i love the fx surrounds, but it seems like most people who have 7.1 choose direct speakers as the rear surrounds. either the fx or lsi7's would work so you aren't going to screw stuff up, its just a matter of personal preference. if you can, try both. if not, then its probably safer to just hop on the band wagon and grab some lsi7's.

Kosman

So you think ANOTHER pair of FX's would be the ultimate??? You did not mention the 9's over the 7's?
Also thanks for your comments.

Airplay355

No, I have never heard a 7.1 system with all FX surrounds, so I can't really say that it would be better or worse then a system with direct speakers as rear surrounds.

I think Lsi9's would probably be overkill as rear surrounds, but if you have the money to spend then sure go for it. The 9's might sound better then the 7's but I'm not sure the difference would warrant the difference in price. You might not be able to tell a difference with them as rear surround channels.

If you can try FX speakers as rears, then I say try it. If you don't like it, get the 7's. If thats too much of a pain in the ****, then I'd just get the 7's.

Kosman

I just heard that the new Outlaw amp, the 790 will have balanced inputs but the power is going to be way high, 300 watts @ 8 ohms which would put it at about 500 w @ 4 ohms, which is too much. Therefore I am on quest for an affortable amp with the following:
about 250 watts at 4 ohms tested with all channels driven with balanced XLR inputs, is that too much to ask? Anybody have any suggestions?

Airplay355

Why is that too much? What is your price range? If you mean it's too much because you feel you don't need the power and you'd rather spend less then OK. However, if you feel it's too much because you think you will blow your speakers or they will be insanely loud, then I'd have to disagree and admit you the the psychiatric ward.

McLoki

Originally posted by Airplay355
Why is that too much? What is your price range? If you mean it's too much because you feel you don't need the power and you'd rather spend less then OK. However, if you feel it's too much because you think you will blow your speakers or they will be insanely loud, then I'd have to disagree and admit you the the psychiatric ward.

+1 (BTW - see my sig... )

Michael

Toxis

more power? My 9's are loving the 150w/ch (at 4ohm even) and they have plenty of headroom. Maybe you should get a better quality amp before getting more power... Just a thought.

Kosman

Wow, now I am even more confused. First for this conversion let's leave money out of it. No I not talking about buying an amp for 10K or anything, I expect to pay a few K. Okay, why did I say 500 watts into 4 ohms is too much, cuz the Polk specs recommend 20 to 250 watts, so I kinda figured that twice the recommend max is a little too much. Not thinking about blowing things up, speakers or ears, but just wasting watts, and money. Headroom is one thing but how much do you need? Next one guy says 150 watts are more than enough while the next dude is pumping out 500! Ugh!!!

Airplay355

Kosman,
You need to go out and get your listen on. Listen to high powered amps, listen to lower powered higher quality amps, listen to radio shack amps, and then pick what one you like the best. Do you want to have just enough? Or do you want alittle extra so when you feel like turning it up, you don't have to worry about clipping your amp. It's up to you.

McLoki

Originally posted by Kosman
Wow, now I am even more confused. Next one guy says 150 watts are more than enough while the next dude is pumping out 500! Ugh!!!

I called Polk CS about my amp and they said is should be fine to run my speakers (rated at 150wpc max BTW). I was told it is very rare to blow speakers with to much power compared to how common it is to blow them with not enough power (driving the amp into clipping).

I will admit that the 500 watt amp I have is overkill, but I got a great deal on it and it will run any speaker I upgrade to in the future so I purchased it. I was not trying to say that for the system you are planning you have to have an amp that size, I was just trying to point out that you should set a minimum power limit and maximum dollar amount you are comfortable with and get the best amp you can with the dollars you are investing.

Basically if you end up with a 150watt amp I am sure it will do the job just fine, but if you find a great deal on a larger amp that fits into your budget, don't pass it up just cuz you think it might be to large or damage your speakers.

Sorry for the confusion,

Michael

Kosman

Thanks for the good advice Michael. I think I found what I am looking for, and it was not at Radio Shack.... I am looking for a good quality amp with enough power and something with XLR inputs.

GFA-7707 Features Back To Top

Main Features
20 Amp Circuitry: Required

General Features
Damping Factor: 1k >500
Dynamic Headroom: 0.96db into 4 ohms

Frequency Response: 3Hz- 130Khz
Number of Channels: 7

THD: <1.00%
Watts Per Channel 4ohms: 300 Watts

Watts Per Channel 8ohms: 200 Watts

Inputs / Outputs
XLR: Rear Input (7)
Analog Audio: Rear Input (7)

Speaker Terminals: 5 Way Binding Post

Dimensions
Weight (Pounds): 78.25
Depth (Inches): 18.5

Height (Inches): 9.375
Width (Inches): 17
Unit Weight: 78.25 lb (35.5 kg)
Packed Weight: 90.4 lb (41 kg)

Airplay355

Cool man. You will love that amp I'm sure.

McLoki

I couldn't find any reviews of that amp, but it does look like it should be awesome.

I have not hear any of the recent adcom amps. Their older amps (much older) were a little bright, but with the LSi's would sound good. (since the LSi's are not bright speakers at all)

It has been many years since I heard adcom (more in the SDA timeframe than LSi) but they are a good brand name that has been around forever. I would do a quick listen if you can to an Adcom/Lsi combo just to ensure you like the sound together, but it should be a good match.

Just out of curiosity, why have you given up on the outlaw? (assuming here the price will be comparable to what you are paying for the adcom just with more power - if the price is sky high compared between them then it makes sense)

I look forward to a review of your 990 when you get it as that is the next upgrade my system will be my be needing and the 990 is my current top candidate. (in a year or so when they start hitting the used market)

Whatever you decide it will be a dream system when you are done, enjoy it.

Michael

Edit - I just was looking through the showcase and noticed that goingganzo has an adcom 7607. You might want to PM him and ask what he thinks of it with polk speakers. (it looks like he has the RTi series rather than the LSi)

Kosman

Michael, you ask why I have given up on Outlaw amps. Simple, in there own literature they rave about the XLR balanced outputs on the new 990 but currently do not offer an amp with XLR inputs. Possibly the new 790 will, with the 500 watts per channel @ 4 ohm. If the 790 comes in cheaper why not 500 watts!