rafael-sf

Re: [BUILD] CAPI Dual VPR & 51x Floor Box PSU~Official Support Thread
« Reply #500 on: August 02, 2018, 07:34:05 PM »
If you are using the rack with only the Floor Box, the filtering is not needed. It is possible the inrush current to fill the 470µF caps is causing the fuse to blow. Its almost like leaving phantom on for 10 preamps and then starting up the Floor Box PSU.

Any workaround (other than putting the floor box on ebay) ? The long term plan is to have a second rack, hence the floor box instead of the other power supply on your shop.


jsteiger

Re: [BUILD] CAPI Dual VPR & 51x Floor Box PSU~Official Support Thread
« Reply #501 on: August 02, 2018, 08:26:06 PM »
Any workaround (other than putting the floor box on ebay) ? The long term plan is to have a second rack, hence the floor box instead of the other power supply on your shop.
If you only ever plan to use the Floor Box then no need for the filter components at all.
Visit the CAPI store at http://www.capi-gear.com

CAPI is not affiliated with, endorsed by, or sponsored by API.

rafael-sf

Re: [BUILD] CAPI Dual VPR & 51x Floor Box PSU~Official Support Thread
« Reply #502 on: August 02, 2018, 09:23:55 PM »
If you only ever plan to use the Floor Box then no need for the filter components at all.

I got that, but what's a good workaround? Just bypass all the filtering section or use a higher current fuse?

jsteiger

Re: [BUILD] CAPI Dual VPR & 51x Floor Box PSU~Official Support Thread
« Reply #503 on: August 03, 2018, 10:00:54 AM »
I got that, but what's a good workaround? Just bypass all the filtering section or use a higher current fuse?
I would try a 160mA slow blow fuse.
Visit the CAPI store at http://www.capi-gear.com

CAPI is not affiliated with, endorsed by, or sponsored by API.

rafael-sf

Re: [BUILD] CAPI Dual VPR & 51x Floor Box PSU~Official Support Thread
« Reply #504 on: August 20, 2018, 03:45:23 AM »
I would try a 160mA slow blow fuse.

Sorry for the delay in replying, but the short blow fuse worked purrrfectly. Much obliged, Jeff.

Re: [BUILD] CAPI Dual VPR & 51x Floor Box PSU~Official Support Thread
« Reply #505 on: November 21, 2018, 10:46:39 AM »
Okay, I've encountered a strange noise problem in a chain of gear.

I have a  Radial Komit in a CAPI VPR rack, into a Helios Type 69-500 pre/eq (line mode on) in a BAE 11 space rack. As soon as the Komit is engaged, I get a ground hum.

Now, I tested all the routing and cabling in a multitude of ways and configurations, bypassing different things and I'm pretty certain it is not a cable issue. bypassed the patchbay, etc, etc.  I'm fairly certain it is not cable related.

This is problematic signal flow:
Lynx Out (via patchpay normal) -> Komit In (CAPI VPR Rack) / Komit Out -> Patchbay w/ patch to Wall Tie In/Helios Type 69-500 ((I set these up because my preamp inputs are directly XLR connected to my wall snake, thus made patchpoints that lead to XLRs to my wall I can swap in when wanting to use my Helios  eqs))

I know, that's a lot of cabling to be suspicious of, but I'm pretty certain it's not cabling. I don't have the same noise problem skipping the Komit but still going into Helios same signal flow, and I don't have a problem skipping Helios but going into Komit signal flow - ie, they operate fine when individual. I also eliminated the patchbay a number of ways, and my wall tie ins.


I moved the Komit, out of CAPI VPR rack and into the 11th slot on my BAE rack, did the same chain flow and the problem was not there. then I returned it to the CAPI rack and recreated the same problem as before.

Then, back in the problematic spot in the VPR rack, I tried the same test, but reversed the order of the chain.., Lynx out -> Helios In ->  Komit In -> Lynx in. And the problem is not there.

So this problem only occurs when the Komit is in the VPR rack with the bypass out and is connected output to Helios input.

Helios output, to Komit input, no problem.

Any ideas? something I did wrong in the VPR build?  I'm wondering if the Helios just doesn't like line devices before it since it's -10db unbalanced (I'm pretty sure) - would that explain it? - not really,  because the specific gear chain works if Komit is in the BAE rack.
« Last Edit: November 21, 2018, 10:55:43 AM by PetezaSlice »


 

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