Scared and Confused?

[Oak244 0]

Ok, I just got a long e-mail from the guy I bought my USA-600x from. He asked what my system was like, so I told him, and he claims I have way too much power! He quarentee's me that the USA-300x I plan to put on my sub will blow the sub for sure, and that the 600x will murder my CDT ES520 set! This is his quote...

"You should get a 200X new style 7" chassis to drive your 520 europoops, a 400X to drive 4 of your 8's and a 600X to drive 2 of your 12" woofarts"

"I had guys ask me how come a 200 watts US Amps keeps blowing 1000 watts woofers. I told them the 1000 watts woofer was actually 100.0 watts RMS (US Amps watts) the decimal point is missing that's why. One USA-1000X has enough power to drive the crap out of 4 of them 12" woofers, or 2 of them 12's and 4 of them 8's all at the same time."

My System plans are...

CDT ES520's (150 RMS) Power by a USA-600x

CDT EF8's (300 RMS) Power by a USA-300x

Stereo Integrity D2 Mag 12" Power by USA-300x Bridged

So what ya think???

[flakko 1]

reason.. maybe clipping (i forgot to add that in your pm)

trying to push 1000w out of a 200w amp will clip the crap outa the amp and blow the sub on the way out. Those people that blew thier subs probably didnt know what they were doing.

again... you are fine with a more powerful amp. just WATCH YOUR GAINS.

edit: take him up on that bet

[UndercoverPunk 0]

What bet, I didn't see that both times he posted this tread.

[///M5 2,833]

As Flakko says, no problems at all as long as you know how to set your gains correctly. Very similar to the power I am running to my setup, enough overhead so you don't need to hardly even bump the gains. Set them with a DMM or Oscope and you will be fine. If you don't know what clipping/distortion sounds like you shouldn't do those by ear.

[flakko 1]

What bet, I didn't see that both times he posted this tread.

<{POST_SNAPBACK}>

oh this is most of the email the dude sent oak:

I guarantee you a 300x/1000x will blow that woofer the 1st day. I don't think any speaker in the market other than Treo, DD or JL Audio was rated the same way than US Amps is rated. Most speakers in the market are rated the same way as power acoustic and audiobahn (flee market watts) missing the decimal point. I bet you a hundred dollars it will blow it. I don't think you know the power of US amps. I seen many times USA-200 old style 16" chassis blow and melt sets of woofers with incredible force. I used to have pictures of woofers that have been destroyed by US amps 100hc (same as the 200 and 200X old style but high current version) time after time again. I had guys ask me how come a 200 watts US Amps keeps blowing 1000 watts woofers. I told them the 1000 watts woofer was actually 100.0 watts RMS (US Amps watts) the decimal point is missing that's why. One USA-1000X has enough power to drive the crap out of 4 of them 12" woofers, or 2 of them 12's and 4 of them 8's all at the same time.

[UndercoverPunk 0]

Ignorance is bliss I guess.... he really has NO-IDEA what he's talking about.

[95stroked1500 0]

looks like he's using old school us amp model #'s. and they do have huge power for their foot print. and some speakers just can't hold up to the force of a powerful amp. adhesive joints break, coil windigs blow off the former......

i agree that overdriving the amp is the #1 killer of speakers. but i have also seen speakers that might mechanically take 400 watts, but after a couple miniutes produce the magic spl smoke because they can't thermally take the power for any length of time. and there's plenty of those that do just like he says. need a decimal point, because they can't mechanically or thermally take any where near what they claim.

anytime you deal with a high end amp, there is a big difference between that and a "900 watt" sony xplode or fosgate amp.

even my old school autotek mx 1300, which was a badd azz, huge class AB, 375 rms x 2 (2 70 amp maxi fuses in the amp). my tu 600 @ 150 x 2 drives my dyns (2 sets) every bit as hard and cleaner than it did. and the autotek killed most other amps out there for it's day.

not that i'm siding with him, but i just want to make the point that you can't always judge by what the ratings say.

i had one guy bring in some kicker comp subs that he flat destroyed. 2 had a broken cones, another the spider and surround ripped loose, another was siezed up from being thrown out of the gap and cocked sideways. he did it with a us amps and was shocked what power it had for what watt's it claimed. maybe too many people are just used to fake claims, they really don't know what true power can do. he hooked up the amp, turned it on, then just cranked the gain to 3/4. bye bye subs right then and there. $1200 in subs.

one time i did a 2 second burp, paused, turned the vol 5 more nothches, burped again and sent coil windings right off the former myself. this was done with a single amp. it happens.

[Supa_c 1]

Sometimes underrated amps are bad.