Topic: batt boxes, all the same?

[ilduclo]

aha, sooooo, the rolloff will not work on line in, but the box will still help handle big spl's. So, for std level concerts
I'll still go mic in with the box and whatever roll off I think is necessary.

But for LOUD shows, it would seem to be best to go line in, using the box, but ignoring the roll off functions.

correct?

[George]

aha, sooooo, the rolloff will not work on line in, but the box will still help handle big spl's. So, for std level concerts
I'll still go mic in with the box and whatever roll off I think is necessary.

But for LOUD shows, it would seem to be best to go line in, using the box, but ignoring the roll off functions.

correct?

Honestly, i would also go line in with a battery box.  Mic ins tend to be noisy and are often frowned upon as being inferior compared to running line in with a bbox.  All imho.

[cybermansrev]

aha, sooooo, the rolloff will not work on line in, but the box will still help handle big spl's. So, for std level concerts
I'll still go mic in with the box and whatever roll off I think is necessary.

But for LOUD shows, it would seem to be best to go line in, using the box, but ignoring the roll off functions.

correct?

Not Quite As per lordbelial's posting

Mmm.. well. that depends on the impedance of the line-in of your recorder. Most battery boxes are designed for impedances of 10Kohm, and, for example, dats have got an input impedance of 47 Kohm line in and 4,7 Kohm mic-in.

The actual roll off in Hz of the battery box is only as quoted by the manufacters (Sound Professionals + Core Sounds) when the input impedance is 10k (I'm afraid I don't know the impedance of the D8)
But there will still be bass roll-off at ?47k if thats the impedance of the line in on the D8
This thread is very helpful on this subject
http://taperssection.com/index.php?topic=40920.0
Read the posting from DKlein especially
 

[ilduclo]

then, seems line in will be Ok for ALL shows, including quiet acoustic ones?

and I'll experiment with the Bass roll off, see what I think, maybe a really bassy show...?

[cybermansrev]

then, seems line in will be Ok for ALL shows, including quiet acoustic ones?

Your extrapolating too much here, this wasn't the situation you wanted a solution for!

I think I need to clarify. I don’t have the Coresound modified 4061’s. I have the stock ones from DPA, actually a used set offfa EBay. I need to get them modified so they can handle Isis and Khanate type levels, I understand they can handle 144 db when powered with 9v. I already have a Coresound battery box for the old std “binaurals”, so I was hoping to be able to just get the DPA’s modified to plug into that box and then I won’t have to buy a new one.

If you're taping quiet acoustics shows you may need to use mic in and amplify using the D8's preamp OR buy an external preamp and go line in.

[lordbelial]

then, seems line in will be Ok for ALL shows, including quiet acoustic ones?

and I'll experiment with the Bass roll off, see what I think, maybe a really bassy show...?

Well... that's not right at all.

In my experience. My last show was acoustic from a local band. I taped them with permission (and they have a copy of the show, of course), and I was running.

AT853 CMC-4 (cards) --> Battery Box from SP --> Line in NJB3 (wav 44Khz)

The problem was the levels. I knew that I was going to have very low levels, because of the moderate SPL's of the show, and I haven't got a pre yet (i'm waiting for a UA-5 to come from Belgium, just bought it from ebay without the mod, but I can handle myself a digimod.). So I had to add +12db of digital preamp in the NJB3 and the levels were fine. I was afraid of diginoises and that stuff, but the recording came out great (until a dumbass hit my stand and the mics fell until hit into a wall, but only for a brief half second you can hear a BUMP from the mics hit...)

A preamp is higly recommended when running line in @ moderate SPL sittuations. IMO.

[ilduclo]

I think I'll use the mic in for low SPL shows, it sure has worked OK for now, using the "CrappySoundingBinauarls"
and their switchable battery box. I haven't noticed any lack of clarity or other bad sound using it so far. Note that I am using a D100, same essentially as a M1 DAT, not a JB. Again, I was looking for BBox info for using my new (used, actually, but new to me) DPA 4061's with the D100.
So, I got the SP BBox with the switchable filters. I think I will use the filters on the mic in shows that I use, but probably not for the line in, loud SPL ones. Really, the mic in is pretty nice for the majority of the shows I attend, but there are a few that will overload even with the BB.

thanks again!

ilduc

[willndmb]

ok so i am a little confused, the bass roll MUST work going line in otherwise there is no point to even making the box with bass roll
because once you plug into the box its giving you a line signal out.
you wouldn't want to plug your line signal into a mic in right

at any rate i set mine at 98 or whatever it is around there and most of the time it works fine, but a few times when i was really colse i was i had it higher

[udovdh]

ok so i am a little confused, the bass roll MUST work going line in otherwise there is no point to even making the box with bass roll
because once you plug into the box its giving you a line signal out.
you wouldn't want to plug your line signal into a mic in right

at any rate i set mine at 98 or whatever it is around there and most of the time it works fine, but a few times when i was really colse i was i had it higher

Bass roll off depends on the impedance of the line/mic input.
The signal level depends on the mic and the environment (rock concert...).
That combo decides what input you want to use and what capacitance you need for roll off if any.

Get decent cardioids and you won't need roll off. (at least, that is my experience; my box was made for 47K impedance and filters (-3 db) 22 Hz and below)