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#1569051 - 04/14/18 01:41 PM Connecting external preamp and vocal effects unit to 2480
powermac Offline
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Registered: 02/21/16
Posts: 137
Last night I was given an HHB Radius 10 preamp (4 channel) and TC Helicon Voice Works vocal processor. It's my understanding that it's very important to get the chain correct before going into the 2480 to avoid possible damage to the 2480 pre's, and also for a superior signal.

I looked through Franks stuff and didn't find any advice on this process, and was hoping someone might educate me on the proper way to chain these new pieces.

The HHB is pretty cut and dry with all inputs and outputs being XLR. The TC Helicon has an XLR mic input, and has 2 quarter inch (L&R) outputs.

Thanks in advance.

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#1569055 - 04/14/18 04:04 PM Re: Connecting external preamp and vocal effects unit to 2480 [Re: powermac]
uptildawn Offline
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Registered: 12/15/01
Posts: 7663
Loc: Iowa
the hhb manual says the 1/4" outputs are balanced (trs) - I would assume they're line level and not mic level. don't know if you have a choice of output level standard on the machine, but certainly must have some control of output volume, if it's too hot so you could back it off.

chain is - tc goes between instrument/mic and hhb preamp. hhb preamp goes into 2480 line inputs (trs to trs cable is what I'm assuming). Not much else to it.

Turn the input gain on the 2480 as far down (to the left) as you can and still get a healthy meter reading without clipping.
The preamp is sending a line level, so you don't want the 2480 gain to be set for a mic level input.

Just experiment. if it's not loud enough to damage your speakers or headphones and not sustained pulverizing thundering blasts or feedback that's clipping the crap out of the 2480's input, then you have no fear of damaging the 2480 preamp input stage.
_________________________
uptildawn

2013 Iowa City JazzFest sets!
Dr Lonnie Smith Trio w/Jonathan Kreisberg on guitar
Pharoah Sanders Quartet
Fred Hersch Trio
These are post mixes set to single camera video (by Rich Rauch).

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#1569062 - 04/14/18 05:01 PM Re: Connecting external preamp and vocal effects unit to 2480 [Re: uptildawn]
powermac Offline
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Registered: 02/21/16
Posts: 137
The HHB I have has input and output levels, however it doesn't have any TRS outputs. It has XLR balanced, and unbalanced quarter inch X4.

The TC Helicon may be an issue though since it only has a left and right quarter inch output. The HHB doesn't have any quarter inch inputs so I'm looking for my best option to connect the two. Any suggestions?

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#1569074 - 04/14/18 06:00 PM Re: Connecting external preamp and vocal effects unit to 2480 [Re: powermac]
uptildawn Offline
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Registered: 12/15/01
Posts: 7663
Loc: Iowa
are the TC outputs balanced or unbalanced jacks?..... can you find out, or do you know?
If you want to keep everything balanced (not necessarily a must, if the two units live in the same rack space, or are stacked or right near each other.), the you want a pair of cables that have xlr on one end for the inputs and TRS 1/4" on the other end for the TC outputs - if they're balanced... do you know for sure?

If they're not balanced, then the 1/4" side of your cable pair could be mono (like a guitar cable) - TS.... I'm not all here right now, with a gig to go to, so I have to think on whether or not TRS 1/4" plugs will work with unbalanced (TS) jacks).... hmmm. I know it can work the other way around.

At any rate, the HHB is a given - has to be XLR at the input.
I think it would be good for you to know if the TC has balanced or unbalanced output jacks.

I take it you're good with figuring out the HHB to VS side of things...

If you need a cable pair put together and don't think you have the skills, or just want something made, shoot me a PM and we can figure out what to do.
_________________________
uptildawn

2013 Iowa City JazzFest sets!
Dr Lonnie Smith Trio w/Jonathan Kreisberg on guitar
Pharoah Sanders Quartet
Fred Hersch Trio
These are post mixes set to single camera video (by Rich Rauch).

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#1569088 - 04/14/18 07:16 PM Re: Connecting external preamp and vocal effects unit to 2480 [Re: uptildawn]
powermac Offline
Planeteer


Registered: 02/21/16
Posts: 137
Yeah, they are balanced for sure. I thought about using two mono cables and running them into two channels of the HHB, but really don't want to use up two tracks to do that... Sounds like a cable solution? Maybe two TS cables into an XLR?

Good luck with the gig tonight!

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#1569107 - 04/14/18 11:40 PM Re: Connecting external preamp and vocal effects unit to 2480 [Re: powermac]
uptildawn Offline
Planeteer


Registered: 12/15/01
Posts: 7663
Loc: Iowa
Oh yeah - could do that, if you don't want two channels - you won't have the benefit of any stereo processing, which I would think might be key to the successful use of the TC's intended uses... Could lose a lot of fidelity.


The gig went good enough - I did good at one job, but messed up another...... sigh.



Edited by uptildawn (04/14/18 11:40 PM)
_________________________
uptildawn

2013 Iowa City JazzFest sets!
Dr Lonnie Smith Trio w/Jonathan Kreisberg on guitar
Pharoah Sanders Quartet
Fred Hersch Trio
These are post mixes set to single camera video (by Rich Rauch).

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#1569145 - 04/15/18 02:11 PM Re: Connecting external preamp and vocal effects unit to 2480 [Re: uptildawn]
powermac Offline
Planeteer


Registered: 02/21/16
Posts: 137
Good point... Was really thinking about that song I posted last week where I'm running out of tracks, but it would make a decent difference having the vocals in stereo. Will still need a couple of TS to XLR cable. Not the end of the world though.

Glad the gig went well. We all screw up live at times.

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