General silencer discussion. If you want to talk about a specific silenced rifle or pistol, it is best to do that in the rifle or pistol section for that brand.
Bendersquint wrote:No that would not be accurate, not fast enough rise.
ok I'm a little db meter dumb... but all the specs seem to be compatible.. what am I missing?
Josh
The rise time is not fast enough to catch the peak of the gunshot, it will catch the trailing end.
Reading through my old 2209 manual, I noticed that it mentioned that the standard min rise time of 20 microseconds could actually be reduced to as little as 5 microseconds with minor internal alterations, and it suggests contacting B&K to talk with them about it.
Does anyone think such a modification would actually be beneficial?
I finally got my 800b in the mail today. Although I haven't yet found the correct mic for it, I must say I'm thoroughly confused on how to use it. Looks like I'll be spending the next couple days reading the instruction manual.
Hopefully the B&K I have on the way is a little easier to use than this thing.
unclemoak wrote:I finally got my 800b in the mail today. Although I haven't yet found the correct mic for it, I must say I'm thoroughly confused on how to use it. Looks like I'll be spending the next couple days reading the instruction manual.
Hopefully the B&K I have on the way is a little easier to use than this thing.
unclemoak wrote:I finally got my 800b in the mail today. Although I haven't yet found the correct mic for it, I must say I'm thoroughly confused on how to use it. Looks like I'll be spending the next couple days reading the instruction manual.
Hopefully the B&K I have on the way is a little easier to use than this thing.
The LD is easier to use than the BK2209.
Any tips or pointers to get either unit up and running?
Reading through my old 2209 manual, I noticed that it mentioned that the standard min rise time of 20 microseconds could actually be reduced to as little as 5 microseconds with minor internal alterations, and it suggests contacting B&K to talk with them about it.
Does anyone think such a modification would actually be beneficial?
Would it increase measured SPL from a gunshot?
I'm working with B&K to try to figure that out right now. They will no longer work on the units themselves because of their age, so I'm trying to see if they'll point me in the right direction as to which capacitor needs changed.
"Unfortunately, we don’t offer any services on these meters anymore due to their age and technology. The concern is that we would go into the unit, modify it and then something else would fail as the 2209 is famous for this issue, (or rather infamous for). My apologies. I wish we could help on this one, but we can’t. Please let me know if there is anything else I can assist you with. "
unclemoak wrote:
... "Unfortunately, we don’t offer any services on these meters anymore due to their age and technology. The concern is that we would go into the unit, modify it and then something else would fail as the 2209 is famous for this issue, (or rather infamous for). My apologies. I wish we could help on this one, but we can’t. Please let me know if there is anything else I can assist you with."
Since they won't work on it anymore, see if they will provide a complete set of circuit diagrams so you can have qualified service personnel work on it. That would be incredibly helpful.
Josh-PTP wrote:What about a Larson Davis 800b meter? Would this be fast enough to catch the peak of the sound? Also what microphone would you need for this?
Thanks for the help.
Yes, the LD800B is one of the 2 meters that exist to give mil-spec results.
unclemoak wrote:
... "Unfortunately, we don’t offer any services on these meters anymore due to their age and technology. The concern is that we would go into the unit, modify it and then something else would fail as the 2209 is famous for this issue, (or rather infamous for). My apologies. I wish we could help on this one, but we can’t. Please let me know if there is anything else I can assist you with."
Since they won't work on it anymore, see if they will provide a complete set of circuit diagrams so you can have qualified service personnel work on it. That would be incredibly helpful.
Neither company will release circuit diagrams or blueprints for their products, even the ones retired decades ago.
Josh-PTP wrote:What about a Larson Davis 800b meter? Would this be fast enough to catch the peak of the sound? Also what microphone would you need for this?
Thanks for the help.
Yes, the LD800B is one of the 2 meters that exist to give mil-spec results.
Unfortunately there isn't a cheap way of measuring gun shots. I still have my old BK2209 even though I use a different method(but a bit more expensive and time consuming)now.
Just a quick pro tip for anyone buying or searching for a meter online. Make sure the seller confirms it works.
I ended up getting my meter then talking to an audio tech to get it up and running, but it turned out the meter was shot and wouldn't work. Thankfully the eBay seller was willing to give me a refund on the meter.