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Legacy Amp 2600 watt HELP

Well I have a Legacy 2600 watt "Mono Steel" Amplifier Powering 2 12" RockFord Fosgate P2 subs in vented enclosure. Well my question has to do with my amp settings there are 4 different knobs SubSonic (15-40 Hz) + Low Pass (15-250 Hz) + The actual level of power sent to the subs (Min-Max) + PhaseShift (0 or 180).... Well I have the SubSonic set right in the middle + the Low Pass right in the middle + I have the PhaseShift switched on which is 180 (can either flip to 0 or 180) + Level of actual watts sent to subs little passed half way. Also as part of my set up I have a capacitor (.5 Farah) and all professionally hooked up so just wondering if the settings I am using will hurt (break) anything. Please let me know your opinions and suggestions THANK You Very Much.......

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Hello e_cody_e,

The settings you have will not break anything and may sound OK.

But they may not be optimum for getting the best bass from your system. The SubSonic setting filters out frequencies below the threshold of hearing allowing the amp to put more power into the frequencies that can be heard. So, it should be set to about the same frequency that your enclosure is tuned for or just a little lower. If your enclosure is tuned for 35Hz, then the subsonic should be close to maximum.

Similarily, the low pass sends all frequencies below the setting to the subs, (other than those blocked by the subsonic filter) and is commonly referred to as the "crossover" frequency. Typical crossover frequencies for subwoofers are 60Hz, 80Hz and 100Hz. For a ported enclosure, lower is probably better.

The phase shift should be set to the position that best synchronizes the bass with the music. Because of the additional wiring required for the subs, the signal to them is sometimes slightly delayed causing the bass to be "out-of-sync" with the rest of the music. The thump of the bass comes just a little sooner or later than expected. If the bass sounds out of phase, turn the phase shift on, otherwise leave it off.

The "gain" or level control allows you to match the amps input to your head units subwoofer output. The best setting is usually as high as possible without distortion. Set it by turning up the head unit volume to about 3/4 maximum and then advance the amp gain until your subs just begin to distort. Then back it off slightly.

These settings should allow your amp to put the most power into the frequencies that your subwoofers are designed for and hence produce the loudest and lowest bass.

Hope this helps.

Posted on Jun 28, 2009

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This was vary hopeful of who every wrote this thank you vary much cause i just got this amy from my bro but i have a Q the 2600 amp i have is the same one that we are talking bout but im not puttin it on 12s im puttin it on 2 power bass rockford p3 they hold 600 watts a peace so is this a amp that will not give me any problems im sick of going in my turnk please help me
thank u if you can post a video too show me that would be better so i know what to set the knobs tooo
thanks shane

Posted on Oct 07, 2011

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