Topic: DPA 4061s/SP Batt. Box/AD20 - Questions and Clarification

[rsimms3]

Sounds like using the IRiver analog is not a good idea no matter what the set-up with the low input impedance.  What about the setup with the AD20?  That would be going 4061s > Batt. Box (variable roll off values) > AD20 > JB3 optical.  Is impedance still an issue with the AD20 in there?  Is the impedance issue at the AD20 or still at the JB3?  Thanks for all the comments and suggestions so far.  The mics should be here Monday, but I have no actual show to test with until later in the month, hopefully I can do some testing with my stereo, not the same but it is as close as I can get at this point.

[rsimms3]

How about grids, which ones are people using?  I have both sets.  Thanks.

[cgrooves]

The input impedance issue we are discussing concerns the recorder only.  You are being cautioned to correlate the roll-off values from your battery box (designed around a 10 KOhm impedance recorder) to the recorder you are actually using so that you don't end up rolling off a LOT more than you think you are.   

What you should take from this discussion, IMO, is that you probably don't need to use bass roll-off with these mics anyway.  If you want to use bass roll-off because you need to reduce the low end some, do the correlation between the SP battery box and your recorder (search threads for correlation charts) to determine what roll-off values are actually available for you with that specific combination.  A custom battery box will probably be your best bet to get the roll-off values you will want.

In Summary:  You need to correlate your particular battery box to your particular recorder to determine what ACTUAL roll-off values you have available for recording purposes.  The same battery box (at the same roll-off setting) will provide a different roll-off value with a different recorder (if the recorders' input impedances don't match).

[rsimms3]

Does this premise hold true for both analog and optical inputs on the JB3?  That was what I was trying to clarify in the first post on this page, I have found the chart and will do the calcuations based themif it is true for optical since I will be feeding the JB3 via the AD20.

[George]

I have a pair of dpa4061's+MMA6000 preamp coming next week.  So i'm wondering if anyone has ever done a comparison between the MMA6000 vs the soundpro box when the dpa's are terminated to miniplug.  Basically,  i'm wondering if the dpa's truely benefit from the MMA6000.  Any opinions? 

[madman]

I have a pair of dpa4061's+MMA6000 preamp coming next week.  So i'm wondering if anyone has ever done a comparison between the MMA6000 vs the soundpro box when the dpa's are terminated to miniplug.  Basically,  i'm wondering if the dpa's truely benefit from the MMA6000.  Any opinions?

I got the MMA6k mainly to level out the dB difference between my mics (about 2.5dB) and to boost levels so I could run line-in no matter where I was.  Prior to that I was running only with the DPA battery box, so I don't have any comparison to the soundpros boxes.  The MMA is handy, not many shows can provide high enough levels to go line-in without a pre.

[emalvido]

So........
The recomended setup for a M1 using them would be?
DPA4061's>sp-spsb-8>M1

Via LINE IN ?

[zeus163]

DPA 4061>SP-SPSB-8>D8

That's the set-up I used last night in Seattle going line-in. I also had the adjustable bass set at 69Hz. I was very pleased with the results.

[KingReptile]

I have a pair of dpa4061's+MMA6000 preamp coming next week.  So i'm wondering if anyone has ever done a comparison between the MMA6000 vs the soundpro box when the dpa's are terminated to miniplug.  Basically,  i'm wondering if the dpa's truely benefit from the MMA6000.  Any opinions? 

The MMA 6000 is more detailed,less muddy..

[ilduclo]

zeus163, what show did you tape with that set up?

Lotsa SPL's ?

 Is your M1 modded?

I did a loud show with mic in using same set up, bad brickwalling! I'm hoping that the loud shows I can do line in with out a pre.

I've got this set up now dpa4061’s>sp-spsb6>tcdd100 ( or can go to my Sharp MDMT770 Minidsc, which doesn't ever brickwall!)

[KingReptile]

zeus163, what show did you tape with that set up?

Lotsa SPL's ?

 Is your M1 modded?

I did a loud show with mic in using same set up, bad brickwalling! I'm hoping that the loud shows I can do line in with out a pre.

I've got this set up now dpa4061’s>sp-spsb6>tcdd100 ( or can go to my Sharp MDMT770 Minidsc, which doesn't ever brickwall!)

Read his post it says he ran line in..Loud rock shows run with your  TCD-D100  line in ..As long as you dont bury it way past zero you shouldnt brickwall..If your just getting started run your levels conservative -6 to -4..

[ilduclo]

thangs, kingrep!