166 db calibrated cheapie termlab for DMM's

[CJL 10+ year member]

//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif

 

[mobeious 10+ year member]

i dont understand why he can come on here and reply back and forth with people but he cant take 10mins and post results..... i mean **** all u have to say is TL did this number and DMM did this number ... what is so hard about that????.... to tell u the truth i dont think he has anything to compare it with

 

[Jeremiah25 10+ year member]

O.K. I got mine finally. My first impressions weren't very good. The instructions are pathetic. Hand written and photocopied with lots of misspelled words and are in general hard to follow. I hooked it up to make sure it even works and it does. It will be the weekend before I get to test it more thoroughly, but after using it a little I think it shows promise. There is a lot of information on the CD to go through, and like I said it's very hard to make heads or tails of the info, so I can see why the other guy might be taking so long. LOL

 

[Chevyaudio 5,000+ posts]

I saw the instructions as well...I enjoyed the hand drawn pics.

 

[thesandman 10+ year member]

keep us updated!

 

[jmanpc 5,000+ posts]

i forgot to slap justin for that this weekend //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

 

[SAG3 5,000+ posts]

wtf

 

[jmanpc 5,000+ posts]

Anything yet, Jeremiah?

 

[ThomasG 5,000+ posts]

so did we ever get any results?

 

[lilmaniac2 5,000+ posts]

jntar ship it to me... ill test it

 

[Jeremiah25 10+ year member]

Well, I'm not done testing yet. The reason: my amps blew up. Not joking either. I will say this guys. This thing isn't too bad, or at least it isn't a total peice of garbage. It is very sensitive. Using a good DMM that is accurate the results are very consistant. It works differently than the TL so there are some differences. The TL averages 3 different frequencies for your score although you are only playing 1 frequency, whereas this meter just outputs voltage at one frequency. I'm not really "up" on exactly how the termlab does that averaging thing, I just know it does. So anyways that causes some differences at different frequencies, but right at my cars peak frequency and/or resonant frequency this thing reads very close to what the TL does, when using my good Fluke true RMS DMM. If you use a POS cheapo DMM that is off, then obviously the readings you get will be off, because the voltage readings you are taking with this thing are in millivolts. Some cheapo DMM's are off by over a volt, so the millivolt readings with those DMM's are nearly worthless. I feel like a good DMM is a must to use this meter. I will finish up my version of testing as soon as I can figure out something for amps to show the differences of this meter -vs- the TL at different frequencies, but unfortunately this thing IS going to vary from DMM to DMM unless everyone was willing to buy top of the line Fluke true RMS meters.

 

[jmanpc 5,000+ posts]

Thanks for the update!

 

[Johnny Drama 5,000+ posts]

jntar ship it to me... ill test it

Send me your address...

 

[jeremiah 10+ year member]

Well, I'm not done testing yet. The reason: my amps blew up. Not joking either. I will say this guys. This thing isn't too bad, or at least it isn't a total peice of garbage. It is very sensitive. Using a good DMM that is accurate the results are very consistant. It works differently than the TL so there are some differences. The TL averages 3 different frequencies for your score although you are only playing 1 frequency, whereas this meter just outputs voltage at one frequency. I'm not really "up" on exactly how the termlab does that averaging thing, I just know it does. So anyways that causes some differences at different frequencies, but right at my cars peak frequency and/or resonant frequency this thing reads very close to what the TL does, when using my good Fluke true RMS DMM. If you use a POS cheapo DMM that is off, then obviously the readings you get will be off, because the voltage readings you are taking with this thing are in millivolts. Some cheapo DMM's are off by over a volt, so the millivolt readings with those DMM's are nearly worthless. I feel like a good DMM is a must to use this meter. I will finish up my version of testing as soon as I can figure out something for amps to show the differences of this meter -vs- the TL at different frequencies, but unfortunately this thing IS going to vary from DMM to DMM unless everyone was willing to buy top of the line Fluke true RMS meters.

try the DMM at Wal-Mart (the one that is like $25) so we can have the same

results //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Jeremiah25 10+ year member]

OK I hooked up an amp and tested the differences today. These results were obtained while using my Fluke True RMS DMM to measure the mV output from the Make it louder.com sensor. I made a chart to show the differences in the readings. Please note that the termlab scores were always higher than the makeitlouder.com meter, and the chart shows the difference in the scores at each frequency. The scores were taken between 140-145 dB due to the use of a small amp, LOL. I have not gotten the chance to test the meters at an SPL level higher than that, and probably won't have the opportunity too until I get new amps.