thehoe92 Posted August 8, 2009 Report Share Posted August 8, 2009 So a buddy of mine did some tests on his Sundown SAZ-3000D with an O-scope and said that when the bass knob was plugged in it actually decreased the total output. The total calculation came out to about 800 watts less and it was audible too. My question is do any amp gurus out there know why that could be the case and if the Rockford amps are the same? Quote Wouldnt be thehoe92 without teh purple Link to comment Share on other sites More sharing options...
Basshead08 Posted August 8, 2009 Report Share Posted August 8, 2009 This is probably a stupid question but is he sure the knob wasn't turned down? Quote System tear out has begun...Out with the old i have a iq of 128 i graduated at the top of my class tell me how im reatrded you are the 1 thats dumb as hell you can't even spell Look at the underlined text hahahahahahahaha I think of it as the virgin losing the virginity technique not just jumping in to it, and pounding away, but going at it slowly over time, to get to that full extreme Link to comment Share on other sites More sharing options...
HHR Ed Posted August 8, 2009 Report Share Posted August 8, 2009 I never use bass boost or plug in my bass knobs for SPL, as they will actually decrease the score. Amps usually have a sweet spot of signal input voltage. Anything over can be too clipped, or just too much for the amp to operate efficiently at. Bass boost increases the signal input voltage into the input stage of the amp. So if your amp's sweet spot is 2.5v for example, and your headunit is a 2.5v pre-amp output. And your gain is set on the amp to the proper sensitivity, Then the bass boost is just overdriving the amp and putting maybe 3.5v input for example. Quote Ed Lester ShowtimeSPL Host Showtime Electronics Video MarketingMy old Build Loghttp://www.stevemead...08/#entry511451http://www.youtube.com/showtimespl 5 time dB Drag Finalist Last ride 2007 HHR, current dB 153.5 and bass race 149.4 dB. 153.0 dB on music New Ride, 2008 HHR SS. Build under way. Loudest score ever = 171dB 2009 dB Drag Racing, North American Points Champion Link to comment Share on other sites More sharing options...
Rogers Posted August 8, 2009 Report Share Posted August 8, 2009 sooo i thought if you turned the bass remote all the way up and then set the gains with a dmm you would end up with the same output.... Quote http://www.stevemeadedesigns.com/board/topic/79921-rogers-700-dream-car-update-page-17-a-wall/?p=2335774 93 Saturn SC2My system4 SA-15's Walled 2 Cerwin-Vega S2000's 3 Kinetik Hc2000's Dual 200amp alts. you guys done with the peepee touching contest or do I need to end it? Link to comment Share on other sites More sharing options...
HHR Ed Posted August 8, 2009 Report Share Posted August 8, 2009 sooo i thought if you turned the bass remote all the way up and then set the gains with a dmm you would end up with the same output.... No, leave all x-overs flat, no boost. Bass boosts at 45hz on a 12db per octave slope usually. Leave it off. Then set your gains to optimal level for your peak clean head unit volume. Bass boost could be used for songs that have the low end lacking, or if you are playing at a lower volume level but wanna boost up the low end. NOT, if you are playing at full or near full level with songs that have good bass, or tones. Quote Ed Lester ShowtimeSPL Host Showtime Electronics Video MarketingMy old Build Loghttp://www.stevemead...08/#entry511451http://www.youtube.com/showtimespl 5 time dB Drag Finalist Last ride 2007 HHR, current dB 153.5 and bass race 149.4 dB. 153.0 dB on music New Ride, 2008 HHR SS. Build under way. Loudest score ever = 171dB 2009 dB Drag Racing, North American Points Champion Link to comment Share on other sites More sharing options...
alvitae Posted August 8, 2009 Report Share Posted August 8, 2009 My amps have a gain knob instead of bass boost. I would think that wouldn't affect you negatively like bass boost would it? Quote Link to comment Share on other sites More sharing options...
HHR Ed Posted August 8, 2009 Report Share Posted August 8, 2009 My amps have a gain knob instead of bass boost. I would think that wouldn't affect you negatively like bass boost would it? gain is different. Gain is input sensitivity. Basically it matches the sensitivity of the amp to the voltage of the pre-outs on the head unit. Basically, full gain could be a sensitivity setting of .2v, and gain fully down will set it to a sensitivity of 8v. So if your headunit puts out 4v clean signal, you would have the gain set somewhere in the middle. Quote Ed Lester ShowtimeSPL Host Showtime Electronics Video MarketingMy old Build Loghttp://www.stevemead...08/#entry511451http://www.youtube.com/showtimespl 5 time dB Drag Finalist Last ride 2007 HHR, current dB 153.5 and bass race 149.4 dB. 153.0 dB on music New Ride, 2008 HHR SS. Build under way. Loudest score ever = 171dB 2009 dB Drag Racing, North American Points Champion Link to comment Share on other sites More sharing options...
alvitae Posted August 8, 2009 Report Share Posted August 8, 2009 (edited) Thats what I thought, thnx. Edited August 8, 2009 by alvitae Quote Link to comment Share on other sites More sharing options...
Rogers Posted August 8, 2009 Report Share Posted August 8, 2009 i suppose it depends on what amp and what function the knob actually controls.... i just got my aq2200d today... and the manual says that the knob controls the "level" whatever that means... and it also has a clipping light on it... sooo.... im wondering just exactly what my knob does...lol... and its kinda weard... the max is on the left and min is on the right so you have to turn it counter clockwise to turn it up... and i also have a question about the clip light thing... could this be used to get a pretty good idea on where the gains should be? does it pretty much be the same as an oscope except you dont see the waves? Quote http://www.stevemeadedesigns.com/board/topic/79921-rogers-700-dream-car-update-page-17-a-wall/?p=2335774 93 Saturn SC2My system4 SA-15's Walled 2 Cerwin-Vega S2000's 3 Kinetik Hc2000's Dual 200amp alts. you guys done with the peepee touching contest or do I need to end it? Link to comment Share on other sites More sharing options...
thehoe92 Posted August 8, 2009 Author Report Share Posted August 8, 2009 that makes sense Ed thanks. I heard Rockford has a different type of "boost" so I was also wondering whats the deal with that since the sundown got me questioning if I would be louder without the knob. some say that Rockford amps won't even work without the knob plugged in. Quote Wouldnt be thehoe92 without teh purple Link to comment Share on other sites More sharing options...
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