[PLMONROE]

Brian or John, can you give me or tell me where to find the input sensivity for the amps that come with the VLAs? Thanks.

Paul

[John Casler]

Brian or John, can you give me or tell me where to find the input sensivity for the amps that come with the VLAs? Thanks.

Paul

Hi Paul,

Input impedance for that amp is listed as 12K ohms.

[PLMONROE]

Thanks John, but it is the input sensivity (in volts) I need please.

Paul

[Housteau]

Paul, I am not sure what it is either.  Can I ask why you need to know?  Does it have to do with you connecting in your new modified Behringer active crossover?  I am very curious to find out how it works for you.  My concern for connecting the unit has to do with the low input impedance of the VLA bass amp (12K) and the low input impedance of the Behringer itself (25K?).  I have different connection options, but all will need to first address that 12K input impedance from that Dayton sub amp.  You have that Ambrosia preamp which should be able to handle that without issue.  I on the otherhand will have to find a work-around if I go the Behringer route.

[John Casler]

Thanks John, but it is the input sensivity (in volts) I need please.

Paul

Hi Paul,

That is the only "input" spec I have seen listed.

If B sees this (although I have been keeping him busy lately) he might have an idea, and some more knowledgeable than myself might be able to interpret the spec I listed to have relevance to your question.

[Brian Cheney]

Input sensitivity is 1V for full output.

[PLMONROE]

Paul, I am not sure what it is either.  Can I ask why you need to know?  Does it have to do with you connecting in your new modified Behringer active crossover?  I am very curious to find out how it works for you.  My concern for connecting the unit has to do with the low input impedance of the VLA bass amp (12K) and the low input impedance of the Behringer itself (25K?).  I have different connection options, but all will need to first address that 12K input impedance from that Dayton sub amp.  You have that Ambrosia preamp which should be able to handle that without issue.  I on the otherhand will have to find a work-around if I go the Behringer route.

That's correct Dave. I have the Behringer now and the Digilink is on its way. Since the unit can provide three sets of crossovers and three sets of outputs, when it gets here I intend to also route L & R outputs from it to my VLAs. If I can find the gain spec for each of the amps, setting and matching up the outputs will be a piece of cake. So I guess its not the sensitivity of the amps for the VLA that I need but rather their gain.   

[Housteau]

That's correct Dave. I have the Behringer now and the Digilink is on its way. Since the unit can provide three sets of crossovers and three sets of outputs, when it gets here I intend to also route L & R outputs from it to my VLAs.

My understanding from Brian is that this unit cannot directly feed the VLA amps in two channels with a third crossover point.  There are three potential crossovers available, but they are limited in frequency choices, where one is for the high range, one in the middle and one lower.  The lower one available will be used for crossing over the V60s mids and highs to their own bass sections.  Because of this the only way to run the VLAs from the Behringer on the extra outputs would be in mono mode with the sub option selected.

I will be running into the same issue and that is why the input impedance becomes an issue for me.  My options are first to either run the VLA mono amps in parallel with the Behringer out of my preamp, or second to run those mono amps in parallel with the V60s bass amp(s) out of the Behringer.  This second option would allow the Behringer EQ control over the VLAs.

However, the total impedance being driven by either my preamp, or the Behringer would be very low and and at least twice lower than the minimum recommended.  That is what I am needing to do a work around with mods of some sort.

I don't think that the gain will be an issue since that is fully adjustable on each sub amp.

[PLMONROE]

This is certainly my lucky day. Mike Galusha was gracious enough to compute the gains of my tube and ss amps. One comes out to 25.77 db and the other to 26.00 db, so nothing has to be adjusted for differences in gain.  aa aa aa

Paul