Bass4Lyfe Posted July 28, 2008 Report Share Posted July 28, 2008 OKay so I read through allll the gain topics thouroughly (SP) my question is, my dad is an electrical engineer and he "huh'd?" at the way I explained it to him. it says use a dMM on AC volts .... unhook the sub and set it to, for me , 34 volts for around 1200 watts at 1 ohm. but there isno load on the amp with the speaker unhooked - how does that work? is this alread taken in account in that big chart of AC volts and wattages at what impedence that is on the forum? thx hope this made sense Quote ~Matthew 1998 Toyota Camry XLE V6 3L (1) ScyTek Astra 4000RS-2W-1 2-Way Remote Start Alarm with Shock and Proximity (1) 20% Tint All Around (Gately Audio) (1) 250 Amperage HO Alternator (1) Big 3 Done In 1/0 (2) Kinetik HC2400 Power Cell (1) Alpine IVA-D106 Receiver (1) Peripheral Video Bypass Device (4) Alpine SPS-17C2 Speakers (1) Alpine KCE-422i iPod Control Interface (4) Sheets Dynamat Extreme; for speakers (1) 10 Square Feet Hushmat (Trunk & Rear Deck) (4) DC Audio Level 4 15" D2 Subwoofer w/ Level 5 Coils (1) Wall Built By David, Tuned to 32 Hz (1) Rockford Fosgate T40001bd Amplifier (1) Stinger 1/0 Wiring (2 runs of + 2 runs of -) (1) Stinger Volt Meter Link to comment Share on other sites More sharing options...
EricM9104 Posted July 28, 2008 Report Share Posted July 28, 2008 yes the impendance is already taken into account for ac voltage. Quote 2015 Honda Civic LX 4dr | 24k miles Stock H/U and mids/highs Power Acoustik GW3-12" D2 Sub HiFonics BXX1200.1D @ 1ohm Random 2.5^3' dual ported box NVX LOC Stinger wiring throughout 1977 Chevy SWB Cammed 350 Dual exhaust Cheap Wish stereo Link to comment Share on other sites More sharing options...
audiofanaticz Posted July 28, 2008 Report Share Posted July 28, 2008 the online gain calculators take in to fact what ohm the amp will be played at. Thats why they ask you the rms voltage and ohm load and then gives you the number to set your amp at. Quote Link to comment Share on other sites More sharing options...
Bass4Lyfe Posted July 28, 2008 Author Report Share Posted July 28, 2008 i know they take into account the IMPEDENCE but i mean no LOAD on the amp .. you know what im saying? sorry if this is confusing Quote ~Matthew 1998 Toyota Camry XLE V6 3L (1) ScyTek Astra 4000RS-2W-1 2-Way Remote Start Alarm with Shock and Proximity (1) 20% Tint All Around (Gately Audio) (1) 250 Amperage HO Alternator (1) Big 3 Done In 1/0 (2) Kinetik HC2400 Power Cell (1) Alpine IVA-D106 Receiver (1) Peripheral Video Bypass Device (4) Alpine SPS-17C2 Speakers (1) Alpine KCE-422i iPod Control Interface (4) Sheets Dynamat Extreme; for speakers (1) 10 Square Feet Hushmat (Trunk & Rear Deck) (4) DC Audio Level 4 15" D2 Subwoofer w/ Level 5 Coils (1) Wall Built By David, Tuned to 32 Hz (1) Rockford Fosgate T40001bd Amplifier (1) Stinger 1/0 Wiring (2 runs of + 2 runs of -) (1) Stinger Volt Meter Link to comment Share on other sites More sharing options...
Bass4Lyfe Posted July 28, 2008 Author Report Share Posted July 28, 2008 anyone see what im sayin or am iw ay off? thx Quote ~Matthew 1998 Toyota Camry XLE V6 3L (1) ScyTek Astra 4000RS-2W-1 2-Way Remote Start Alarm with Shock and Proximity (1) 20% Tint All Around (Gately Audio) (1) 250 Amperage HO Alternator (1) Big 3 Done In 1/0 (2) Kinetik HC2400 Power Cell (1) Alpine IVA-D106 Receiver (1) Peripheral Video Bypass Device (4) Alpine SPS-17C2 Speakers (1) Alpine KCE-422i iPod Control Interface (4) Sheets Dynamat Extreme; for speakers (1) 10 Square Feet Hushmat (Trunk & Rear Deck) (4) DC Audio Level 4 15" D2 Subwoofer w/ Level 5 Coils (1) Wall Built By David, Tuned to 32 Hz (1) Rockford Fosgate T40001bd Amplifier (1) Stinger 1/0 Wiring (2 runs of + 2 runs of -) (1) Stinger Volt Meter Link to comment Share on other sites More sharing options...
Torres Posted July 28, 2008 Report Share Posted July 28, 2008 are you saying that you dno what to adjust it to since the amp isnt seeing a load? since the speakers are unhooked and all? at first i thought you werent getting a reading. but am i close? lol i think i know what you're saying, it's just hard to word. Quote Link to comment Share on other sites More sharing options...
Bass4Lyfe Posted July 28, 2008 Author Report Share Posted July 28, 2008 yes sir exactly. i don't have the amp yet - i'm asking this because the amp should come tues or wed so i want to know how to set the gains if the amp isn't seeing a load (beacuse speakers are unhooked) iis it still correct to use that chart? 34 votls ac for ~1200 watts RMS @ 1 ohm? Thanks expo ... Quote ~Matthew 1998 Toyota Camry XLE V6 3L (1) ScyTek Astra 4000RS-2W-1 2-Way Remote Start Alarm with Shock and Proximity (1) 20% Tint All Around (Gately Audio) (1) 250 Amperage HO Alternator (1) Big 3 Done In 1/0 (2) Kinetik HC2400 Power Cell (1) Alpine IVA-D106 Receiver (1) Peripheral Video Bypass Device (4) Alpine SPS-17C2 Speakers (1) Alpine KCE-422i iPod Control Interface (4) Sheets Dynamat Extreme; for speakers (1) 10 Square Feet Hushmat (Trunk & Rear Deck) (4) DC Audio Level 4 15" D2 Subwoofer w/ Level 5 Coils (1) Wall Built By David, Tuned to 32 Hz (1) Rockford Fosgate T40001bd Amplifier (1) Stinger 1/0 Wiring (2 runs of + 2 runs of -) (1) Stinger Volt Meter Link to comment Share on other sites More sharing options...
pstone11 Posted July 28, 2008 Report Share Posted July 28, 2008 yes sir exactly. i don't have the amp yet - i'm asking this because the amp should come tues or wed so i want to know how to set the gainsif the amp isn't seeing a load (beacuse speakers are unhooked) iis it still correct to use that chart? 34 votls ac for ~1200 watts RMS @ 1 ohm? Thanks expo ... You're right, just use the chart and you'll be fine. That's why the ohm loads are on it. Thanks for planning on setting your amps up right the first time... That dosn't happen as much as it should. Quote Check out StoneSounds to see my recent builds.Or look at the Flying White Facebook Page! Link to comment Share on other sites More sharing options...
Torres Posted July 28, 2008 Report Share Posted July 28, 2008 yes you want to adjust tune the amp according to the way you will wire it all up. when the amp sees a 1 ohm load, it'll put out the power you adjusted it to. now say you adjusted it to that voltage, and wired it to a 2 ohm load (i'm not sure which chart you went by, but ima go by the one in my sig) you'll be getting 600 watts. notice the voltage rating is the same -- 34.64 volts for 600 watts @ 2 ohms and 34.64 volts for 1200 watts @ 1 ohm. so basically when tuning your amp, you want to adjust the voltage according to the power you want/need with the given ohm load into consideration. which is why the chart includes all those ohm ratings. so that way if you need 500 watts with a 4 ohm load, you wont tune it to a 1 ohm load, which would put out less power since the amp 'thinks' it's seeing less resistance since that's what it was tuned to. that make sense or did i just ramble? lol i'll try to clear some up if so Quote Link to comment Share on other sites More sharing options...
David Posted July 28, 2008 Report Share Posted July 28, 2008 pat and expo nailed it. thats exactly how I would do it. Quote Link to comment Share on other sites More sharing options...
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