99AUXR Posted November 2, 2013 Report Posted November 2, 2013 Hi guys, Just wondering on how much I cant actually turn the gains up without risking thermal, mechanical failure on my mids. I have a Focal FPS 4.160 Amplifier Rated at 4x 120W @ 4 Ohms Powering a set of Focal 80W RMS Front Splits and some 80W RMS Focal Coaxial for rear fill. Atm I have used an 80Hz Sine wave to set a voltage of 17.8. How much more can I go. Cheers for any help as this is my third install, also here are some pics. Brad BF XR6T with Focal Audio
Tarball Posted November 2, 2013 Report Posted November 2, 2013 Not sure I follow how you are setting the gain but first you need to know where your deck is clipping, then you can set your amp gains. Are you using an o-scope ? CURRENT SYSTEM: Alternator: Stock alt on mids/highs Isolated DC Power 270 SP - Charging @ 16.8v Batteries: (2) XS D1400s Power Cable: Double Runs of 1/0 KNU Kolossus Fleks Headunit: 80-PRS Sub Amp: DC 5.0k Subwoofers: 2 RE MT 15s /PSI dual .7ohm recones Subwoofer Enclosure: 9.1cubes @ 32hz - brutal. Mids & Highs Amp: CT125.4 Active Components: Mids RE XXX 6.5c Highs - 3 RE XXX tweeters per side(A pillar) Noise Control: Damplifier Pro all over the cab. Build Log If you do business with me please leave feedback here: FEEDBACK THREAD Highest Legal Score: 151.0 db Highest Musical 30 Second Average: 151.6 db
99AUXR Posted November 2, 2013 Author Report Posted November 2, 2013 Na mate got a DD1 But only used it to find when the standard headunit was clipping which is ~20 out of max 30. Wasnt going to use DD1 to set the gains for amp as when the amp is clipping it will be well over RMS of speaker. So I set the Headunit to 20 and put in a 80Hz track and used a DMM to measure a voltage of 17.6 which should be 80W at 4 Ohms. . . ? BF XR6T with Focal Audio
jarrius Posted November 2, 2013 Report Posted November 2, 2013 No you use the dd-1 to find where your amp is clipping also 2012 Chevy sonic1xSQ HDC3 12 D2RF R1200d 140 square foot of Q-Mat(soon to be installed) 140.2Db sealed on the dash with TL 142 DB sealed on the dash with another meter (was dead on with the TL at a show i was at) 141 on music. strangeduck,on 02 Jan 2014 - 01:39 AM, said: when my car spins out i just put the car in neutral, turn in the direction i want to go and pucker my asshole
meade916 Posted November 2, 2013 Report Posted November 2, 2013 the DD-1 doesn't "find clipping". It doesn't care about clipping. It looks for distortion. as far as you being way overpowered...if that is the case, use the 0db track on the amps too. Thats what i would do. If its STILL too much then you need a smaller amp. All SMD products + MORE available at my store here! https://wccaraudio.com/ Subscribe to My Youtube Channel! Over 1,000,000 subscribers strong! Turn on your notifications! http://www.youtube.com/meade916 Follow My Instagram! Daily live feeds from the shop, exclusive content way before it hits my Youtube channel...and little squares with photo's in them http://www.instagram.com/meade916 The Official SMD Facebook fan Page https://www.facebook.com/SteveMeadeDesigns/ Follow my Tweet (Twitter) http://www.Twitter.com/meade916
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