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<blockquote data-quote="MellowHype" data-source="post: 8257672" data-attributes="member: 640052">Yep brand new, annoying comparing the price to what you pay over in US, think i saw them on amazon.com for $120 each, i payed £140 each which is like $240.Im now tempted to buy this 2nd hand Hifonics Brutus BRE (Elite), capable of 2500 @ 1 ohm, its just i dont know how you can test if an amp is in good condition when 2nd hand. Previous owner could have turned gain to max, blown a sub and just wants to sell it. Guess thats just the risk.,Could anyone help me with my subsonic filter? Ive got a song that has a 26hz frequency that my subs miss because of how its currently set. Am i good to hit 26hz in a box tuned to 34hz?Im using a tutorial on here just want to make sure im correctSSF frequency by using the formula: SSF = Tuning*3/4 - 34hz x 0.75 = 25.5 Calculate the desired SSF voltage by using the formula: SSF_Voltage = 0.707*Sub_Voltage&nbsp; - 0.707 x 31.62 = 22.35 (that is going by &#039;Sub_Voltage is my gains setting voltage)I then get my 25 hz test track and turn down the subsonic untill i see 22.35 volts?Greatly appreciate all of your help in here btw helped me learn alot</blockquote>

[QUOTE="MellowHype, post: 8257672, member: 640052"] Yep brand new, annoying comparing the price to what you pay over in US, think i saw them on amazon.com for $120 each, i payed £140 each which is like $240. Im now tempted to buy this 2nd hand Hifonics Brutus BRE (Elite), capable of 2500 @ 1 ohm, its just i dont know how you can test if an amp is in good condition when 2nd hand. Previous owner could have turned gain to max, blown a sub and just wants to sell it. Guess thats just the risk., Could anyone help me with my subsonic filter? Ive got a song that has a 26hz frequency that my subs miss because of how its currently set. Am i good to hit 26hz in a box tuned to 34hz? Im using a tutorial on here just want to make sure im correct SSF frequency by using the formula: SSF = Tuning*3/4 [B]- 34hz x 0.75 = 25.5 [/B] Calculate the desired SSF voltage by using the formula: SSF_Voltage = 0.707*Sub_Voltage - [B]0.707 x 31.62 = 22.35[/B] (that is going by 'Sub_Voltage is my gains setting voltage) I then get my 25 hz test track and turn down the subsonic untill i see 22.35 volts? Greatly appreciate all of your help in here btw helped me learn alot [/QUOTE]

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