manofthehour Posted September 16, 2010 Report Share Posted September 16, 2010 (edited) I have a Cadence TXA1000D that runs about 1000watts RMS wired down to 1 Ohm. I run the input gain at the lowest it can go 170 mV. My HU (Alpine IDA-x100) says it puts out 3V on the RCAs. Subsonic is at 32-35Hz my box is tuned to around that also. Bass boost is at 0dB since everyone says to do that lol. and Low pass is at 100Hz, but I want to turn it down because it hits the highs horribly... Anyway I've been looking around on forums where people have been tuning their amps. My amp runs a little hot but I'm guessing it's because its 95 degrees outside. I've also seen people using a dmm but haven't really caught on to why and what. Any help would be nice, I'm still kinda learning my way around car audio. edit: I guess my questions are: Is my input gain okay at 170 mV? What exactly is a dmm used for? (in regards to tuning an amp) Edited September 16, 2010 by manofthehour Quote My stuff '06 Scion xA: -Alpine iDa-x100 -Alpine KTP-445 Power Pack -Polk Audio db6501 (front components) -Polk Audio db651 (back coaxials) -2 RE Audio SEX12D4s -Cadence F1200-1D - Custom box tuned to 33Hz - Kinetik HC1400 - 50 ft2 of Audio Technix sound deadner - Big 3 My photography page Link to comment Share on other sites More sharing options...
ant the ninja Posted September 16, 2010 Report Share Posted September 16, 2010 Your sub is hitting highs? Quote 2002 Ford Explorer XLT Front Stage: Crescendo CCX 6.5's Rear Stage: ??? Two 15" Powerbass M154 Audiopipe AP15001d Pioneer DEH-P5100UB Link to comment Share on other sites More sharing options...
manofthehour Posted September 16, 2010 Author Report Share Posted September 16, 2010 (edited) Your sub is hitting highs? not more than 100-125Hz, I can't remember which I set it to, but yes highs for a sub (they are RE SEX 12D4s) but I don't like the sound when it plays those highs and then hits the lows... edit: sorry not the highs speakers play lol Edited September 16, 2010 by manofthehour Quote My stuff '06 Scion xA: -Alpine iDa-x100 -Alpine KTP-445 Power Pack -Polk Audio db6501 (front components) -Polk Audio db651 (back coaxials) -2 RE Audio SEX12D4s -Cadence F1200-1D - Custom box tuned to 33Hz - Kinetik HC1400 - 50 ft2 of Audio Technix sound deadner - Big 3 My photography page Link to comment Share on other sites More sharing options...
ant the ninja Posted September 16, 2010 Report Share Posted September 16, 2010 (edited) I have mine set around 100hz and I never have a problem with highs hitting in the subs or maybe Im not understanding what your saying, I know most people set it around 75-8O, try that and see how you like it. Oh, I forgot I have a LPF on my headunit set to 80hz so It doesnt matter what my amp is set at so maybe thats why. Edited September 16, 2010 by ant the ninja Quote 2002 Ford Explorer XLT Front Stage: Crescendo CCX 6.5's Rear Stage: ??? Two 15" Powerbass M154 Audiopipe AP15001d Pioneer DEH-P5100UB Link to comment Share on other sites More sharing options...
manofthehour Posted September 16, 2010 Author Report Share Posted September 16, 2010 I have mine set around 100hz and I never have a problem with highs hitting in the subs or maybe Im not understanding what your saying, I know most people set it around 75-80, try that and see how you like it. Oh, I forgot I have a LPF on my headunit set to 80hz so It doesnt matter what my amp is set at so maybe thats why. Lol yea... but yea i definitely was planning to do that, but what do you think about keepin the gain at 170 mV? Quote My stuff '06 Scion xA: -Alpine iDa-x100 -Alpine KTP-445 Power Pack -Polk Audio db6501 (front components) -Polk Audio db651 (back coaxials) -2 RE Audio SEX12D4s -Cadence F1200-1D - Custom box tuned to 33Hz - Kinetik HC1400 - 50 ft2 of Audio Technix sound deadner - Big 3 My photography page Link to comment Share on other sites More sharing options...
Skullz Posted September 16, 2010 Report Share Posted September 16, 2010 (edited) you can turn the gain to the 12 o clock position and be safe operating it there for now till you can get a dmm on it or o scoped. EDIT: Set your HP to around 75hz to 80hz Edited September 16, 2010 by Skullz Quote 01 Ford focus ZX3 Pioneer AVH-X491BHS PPI PC 4800.2 Morel Maximo 6.5" x2 Link to comment Share on other sites More sharing options...
manofthehour Posted September 16, 2010 Author Report Share Posted September 16, 2010 (edited) you can turn the gain to the 12 o clock position and be safe operating it there for now till you can get a dmm on it or o scoped. Okay, but why if I can ask? and I'm not going to buy one (right now maybe later), but I can go to a place I know has lots of them and will let me use one real quick... so what do I need to do with it? Edited September 16, 2010 by manofthehour Quote My stuff '06 Scion xA: -Alpine iDa-x100 -Alpine KTP-445 Power Pack -Polk Audio db6501 (front components) -Polk Audio db651 (back coaxials) -2 RE Audio SEX12D4s -Cadence F1200-1D - Custom box tuned to 33Hz - Kinetik HC1400 - 50 ft2 of Audio Technix sound deadner - Big 3 My photography page Link to comment Share on other sites More sharing options...
Skullz Posted September 16, 2010 Report Share Posted September 16, 2010 Post #2 use the chart, find the ohms at the top and go down to where you amp is putting out max watts and set the AC voltage to that. Just follow the directions at the bottom of the chart. http://www.stevemeadedesigns.com/board/topic/14666-calculating-gain-voltage/page__hl__setting+gain Quote 01 Ford focus ZX3 Pioneer AVH-X491BHS PPI PC 4800.2 Morel Maximo 6.5" x2 Link to comment Share on other sites More sharing options...
manofthehour Posted September 16, 2010 Author Report Share Posted September 16, 2010 Post #2 use the chart, find the ohms at the top and go down to where you amp is putting out max watts and set the AC voltage to that. Just follow the directions at the bottom of the chart. http://www.stevemead...l__setting+gain RMS or max watts? and thanks bro Quote My stuff '06 Scion xA: -Alpine iDa-x100 -Alpine KTP-445 Power Pack -Polk Audio db6501 (front components) -Polk Audio db651 (back coaxials) -2 RE Audio SEX12D4s -Cadence F1200-1D - Custom box tuned to 33Hz - Kinetik HC1400 - 50 ft2 of Audio Technix sound deadner - Big 3 My photography page Link to comment Share on other sites More sharing options...
Skullz Posted September 16, 2010 Report Share Posted September 16, 2010 Meant rms max, sorry for the confusion. Quote 01 Ford focus ZX3 Pioneer AVH-X491BHS PPI PC 4800.2 Morel Maximo 6.5" x2 Link to comment Share on other sites More sharing options...
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