My 1st ever meter today

[Ed Lester 10+ year member]

dude,...they're cvr's though... most people couldnt hit over 140 with 3 OK rated subs sealed IN AN EXPEDITION
I dont get it...if the mic was calibrated, how could it have been more than 1-2 DB off... was technology that much worse a few years ago, no

Not that the technology was worse back then, just different. The mic setups were susceptible to variations in atmospheric conditions. This is because the microphone involves moving parts. The meter was supposed to read on a non weighted scale but was a little weighted to read 6-7 dB high for certain reasons that made it work better at that level.

The new TL uses a sensor system that has no moving parts and is not effected by changes in the atmosphere. It is accurate 100% of the time and is truly non weighted. It reads at a level 6-7 dB lower then the old setup because it actually takes readings over a 3hz range. If you play 47hz, it will read 46, 47, and 48 hz and average them together.

 

[bose301s 5,000+ posts]

Not that the technology was worse back then, just different. The mic setups were susceptible to variations in atmospheric conditions. This is because the microphone involves moving parts. The meter was supposed to read on a non weighted scale but was a little weighted to read 6-7 dB high for certain reasons that made it work better at that level.
The new TL uses a sensor system that has no moving parts and is not effected by changes in the atmosphere. It is accurate 100% of the time and is truly non weighted. It reads at a level 6-7 dB lower then the old setup because it actually takes readings over a 3hz range. If you play 47hz, it will read 46, 47, and 48 hz and average them together.

Actually there are moving parts, but on the microscopic scale, if nothing moved it couldn't sense anything, lol.

 

[Ed Lester 10+ year member]

Actually there are moving parts, but on the microscopic scale, if nothing moved it couldn't sense anything, lol.

True, but not in the sense that would be effected by hot and cold expansion and contraction.

I am tempted to open up one of my sensors now.

 

[bose301s 5,000+ posts]

True, but not in the sense that would be effected by hot and cold expansion and contraction.
I am tempted to open up one of my sensors now.

I bet it's either a piezo sensor or a load cell.

 

[Ed Lester 10+ year member]

Not sure.

Looks like a very small chip with a microscopic tube inlet. Others say it looks similar to a mass airflow sensor.

 

[bose301s 5,000+ posts]

Not sure.Looks like a very small chip with a microscopic tube inlet. Others say it looks similar to a mass airflow sensor.

Possibly. Look up the chip on the internet, I am sure you could find a data sheet as I am 100% sure it isn't a custom chip design just for the TL.

 

[Ed Lester 10+ year member]

Possibly. Look up the chip on the internet, I am sure you could find a data sheet as I am 100% sure it isn't a custom chip design just for the TL.

I have a call into Wayne, he'll answer my questions once he calls me back.

I would assume the chip is used for pre-existing technology and Wayne has just integrated it into an SPL meter, but I am not sure.

 

[bose301s 5,000+ posts]

I have a call into Wayne, he'll answer my questions once he calls me back.I would assume the chip is used for pre-existing technology and Wayne has just integrated it into an SPL meter, but I am not sure.

I would assume so, you know how expensive it is to develop an IC and then tool it and produce it, especially in such limited quantities as would be needed for the TL? were talking hundreds of thousands of dollars there. There is just no way it is specific to the TL.

 

[vehementSPL 10+ year member]

3 12" CVR's sealed with 1500 watts doing a 145 is GOOD. hard to believe for me actually, not doubting you, but really good job....

agreed. that is like a 154 to 155 on an old audio control

 

[Ed Lester 10+ year member]

agreed. that is like a 154 to 155 on an old audio control

This 145 would be 145 on an audiocontrol.

 

[DaBeholder 10+ year member]

nice score!