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Re: Regurgitator kit Build Thread

Posted: Thu Jan 29, 2015 10:17 am
by Joe Malone
craigmorris74 wrote:Could this kit be used as a makeup gain stage for a passive EQ?

Thanks,
Craig


Yes if the passive eq output is ok loaded by the 7.5k input impedance of the unbalanced input to the regurgitator.

If the passive eq output prefers a high input impedance use dingo or dingo pup.

Re: Regurgitator kit Build Thread

Posted: Thu Apr 07, 2016 7:51 pm
by G-Sun
Is this best mounted utilizing the XLR?
If using terminal blocks only, then?

Re: Regurgitator kit Build Thread

Posted: Sun Apr 10, 2016 7:39 pm
by Joe Malone
G-Sun wrote:Is this best mounted utilizing the XLR?
If using terminal blocks only, then?


Totally depends on the space you have to fit the kit in the piece of gear

Re: Regurgitator kit Build Thread

Posted: Sun Apr 24, 2016 4:40 am
by earthsled
Options
1 x 3 way terminal block or Male XLR or Female XLR
1 x NE5532AP or OPA2604AP or None


Hi Joe,
Could you explain what you mean by "or None" as an option for the Regurgitator's op-amp?
Are there scenarios where the op-amp can be omitted?
Thanks!

Re: Regurgitator kit Build Thread

Posted: Sun Apr 24, 2016 7:46 am
by Joe Malone
earthsled wrote:
Options
1 x 3 way terminal block or Male XLR or Female XLR
1 x NE5532AP or OPA2604AP or None


Hi Joe,
Could you explain what you mean by "or None" as an option for the Regurgitator's op-amp?
Are there scenarios where the op-amp can be omitted?
Thanks!


None means you can use a opamp you already have. The regurgitator must have a dual dip8 opamp to work.

Re: Regurgitator kit Build Thread

Posted: Sun Apr 24, 2016 9:04 am
by earthsled
None means you can use a opamp you already have. The regurgitator must have a dual dip8 opamp to work.

Thanks for the quick reply! That makes total sense to me now.

I'm racking up a pair of Ward Beck EQ modules and I'm using the Regurgitator for balancing and gain trim on the inputs and outputs. Should I connect pin 1 of the ins/outs to chassis at the XLR(s), or should they be left disconnected?
Thanks!

Re: Regurgitator kit Build Thread

Posted: Mon Apr 25, 2016 2:08 am
by G-Sun
I have a Forssell Opto comp with unbalanced out, + (2) and ground (1)
and are going to use the Regurgitator for balanced out.

Do I connect
forssell ground
to
Regurgitator input 3 minus; 1 ground; or not connect?

And on Regurgitator is ground out/in pin1 connected with pcb ground?

Re: Regurgitator kit Build Thread

Posted: Tue Apr 26, 2016 8:04 am
by Joe Malone
G-Sun wrote:I have a Forssell Opto comp with unbalanced out, + (2) and ground (1)
and are going to use the Regurgitator for balanced out.

Do I connect
forssell ground
to
Regurgitator input 3 minus; 1 ground; or not connect?

And on Regurgitator is ground out/in pin1 connected with pcb ground?


Yes connect forssell ground to pin 3 and pin 1 on regurg input.

yes Pin 1 in and out is connected to 0v power on regurg.

So you should only need the +/- power rails as 0v ground is already connect from the output of the forssell to pin 1.

Re: Regurgitator kit Build Thread

Posted: Tue Apr 26, 2016 4:37 pm
by G-Sun
Joe Malone wrote:Yes connect forssell ground to pin 3 and pin 1 on regurg input.

yes Pin 1 in and out is connected to 0v power on regurg.

So you should only need the +/- power rails as 0v ground is already connect from the output of the forssell to pin 1.

Thank you very much!
It's really helpful for a not-so-skilled hobby-diy'er as me that you help out and explain so well :)

Re: Regurgitator kit Build Thread

Posted: Wed Apr 27, 2016 9:23 am
by Joe Malone
G-Sun wrote:
Joe Malone wrote:Yes connect forssell ground to pin 3 and pin 1 on regurg input.

yes Pin 1 in and out is connected to 0v power on regurg.

So you should only need the +/- power rails as 0v ground is already connect from the output of the forssell to pin 1.

Thank you very much!
It's really helpful for a not-so-skilled hobby-diy'er as me that you help out and explain so well :)


:D 8)

Re: Regurgitator kit Build Thread

Posted: Mon Aug 22, 2016 11:50 pm
by dane999
Hi Joe,

I'm planning on building a balancing unit for a Studer 169 with 14 regurgitators, and currently designing the front panel.
Could you please precise the spacing between XLRs, I'm not sure where tu put the 1'' spacing you specified. If you have somewhere the spacing between the 22mm XLR holes centers, it would be perfect !
I understood the PCBs can come by sets of 8, respecting this spacing, can you confirm it is doable to add 6 more next to the first 8, without modifying the spacing between the PCB mounted XLRs ? Or maybe I can order a row of 14 linked ?

Thank you !

Re: Regurgitator kit Build Thread

Posted: Tue Aug 23, 2016 10:18 am
by Joe Malone
dane999 wrote:Hi Joe,

I'm planning on building a balancing unit for a Studer 169 with 14 regurgitators, and currently designing the front panel.
Could you please precise the spacing between XLRs, I'm not sure where tu put the 1'' spacing you specified. If you have somewhere the spacing between the 22mm XLR holes centers, it would be perfect !
I understood the PCBs can come by sets of 8, respecting this spacing, can you confirm it is doable to add 6 more next to the first 8, without modifying the spacing between the PCB mounted XLRs ? Or maybe I can order a row of 14 linked ?

Thank you !

HI the spacing between XLR centres is 1" or 25.4mm. The PCBs are 1" or 25.4mm wide with the XLR in the centre of the PCB ends. So the spacing between the 22mm XLR holes is 3.4mm.

You can end stack more 8 way regurgitator PCBs with the same 1" or 25.4mm spacing as they are exactly 8" or 203.2mm long.

Longest continuous joined PCB is 8. Remember if you are doing in and outs that the in and out PCBs will need to be reversed so best to do all ins and then all outs etc.
Example if there are 8 in and 8 outs. Use 2 x 8 way regurgitator PCB with one turned around.

If you want the in and outs to be next to each other look at the dingo pup kit instead.

Re: Regurgitator kit Build Thread

Posted: Tue Aug 23, 2016 5:29 pm
by dane999
Okay, thank you for those precisions.
I just need to balance the 14 direct outputs from the desk, 14 jack inputs at the back, and 14 XLR outputs in front of the rack. So I planned to wire the jack ins to the PCBs, and attach them at the front panel by the XLR sockets. Do I need more than 14 PCBs ?

Re: Regurgitator kit Build Thread

Posted: Tue Aug 23, 2016 6:04 pm
by Joe Malone
dane999 wrote:Okay, thank you for those precisions.
I just need to balance the 14 direct outputs from the desk, 14 jack inputs at the back, and 14 XLR outputs in front of the rack. So I planned to wire the jack ins to the PCBs, and attach them at the front panel by the XLR sockets. Do I need more than 14 PCBs ?


14 regurgitators is all you will need then.

Re: Regurgitator kit Build Thread

Posted: Fri Aug 26, 2016 6:57 pm
by dane999
Alright, that's perfect. One last question, and I stop bothering you... What would you recommend for powering those and adding a on/off LED ? I'm not very keen on putting a power tx in side the rack because of the un balanced wires in it. Do you have a clean way to make this externally, via say a SMPS, and then get +-18v rails internally ?