Adjusting gain with dmm
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Silver Member Username: Thumping_corsicaSaginaw, miUnitd states Post Number: 150 Registered: Aug-06 | i just got a dmm. now what do i do to set the gain? |
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Gold Member Username: FrkkevinResonant Engineering..., Fort Worth... Email Post Number: 1700 Registered: Nov-05 | what is the RMS power and what is the ohm load.. |
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Gold Member Username: BestmankindFi AudioBTL Post Number: 7211 Registered: Oct-05 | http://www.subwoofertools.com/forum/setgain.asp |
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Gold Member Username: FrkkevinResonant Engineering..., Fort Worth... Email Post Number: 1702 Registered: Nov-05 | well yeah that works.. i was going to tell him the process  one thing to keep in mind is box rise.. i always set my gain voltage a little higher than my target voltage because of the box rise. i don't know how to figure the exact voltage but im sure marshall does |
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Silver Member Username: Thumping_corsicaSaginaw, miUnitd states Post Number: 152 Registered: Aug-06 | amp is 600 rms by 1 at 4 ohms |
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Silver Member Username: Thumping_corsicaSaginaw, miUnitd states Post Number: 153 Registered: Aug-06 | what hz to i play the tone at? 50 hz? |
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Gold Member Username: BestmankindFi AudioBTL Post Number: 7216 Registered: Oct-05 | yeah i use a 50hz. |
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Gold Member Username: FrkkevinResonant Engineering..., Fort Worth... Email Post Number: 1703 Registered: Nov-05 | depends.. i'd use the note your box peaks at.. play a note that is 8-10hz higher than your tuning frequencu.. you should be looking for 49v but i'd set the gain between 50-52v |
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Silver Member Username: Thumping_corsicaSaginaw, miUnitd states Post Number: 154 Registered: Aug-06 | 1 more question... what do i set the dmm to? "dcv 5" "dcv 25" "dcv 125" "acv 50" or like "acv 10"? thx |
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Gold Member Username: FrkkevinResonant Engineering..., Fort Worth... Email Post Number: 1705 Registered: Nov-05 | ive always set mine to 200acv |
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Silver Member Username: Thumping_corsicaSaginaw, miUnitd states Post Number: 156 Registered: Aug-06 | ok so will 250 acv do? |
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Gold Member Username: BestmankindFi AudioBTL Post Number: 7233 Registered: Oct-05 | setting it at 250 acv will still give you the readings. mine just has 200 and 500 acv but i guess you got one that has more options. |
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Gold Member Username: FrkkevinResonant Engineering..., Fort Worth... Email Post Number: 1706 Registered: Nov-05 | yes.. 250 acv will work fine |
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Gold Member Username: B101DD, RE, FI, TREO, KICKERUSA Post Number: 3930 Registered: Sep-05 | lol dmm 101 if you are estimating a measurement of 6v, your should set the dmm to a 10v scale.. basically you always want to use a larger scale than what u are meassuring or estimating from calculations! dont use to high of a scale, like 1000 to measure something in the 10ths ... etc... |
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