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Author Topic: Measurement Interfaces  (Read 5522 times)

Doug Fowler

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Measurement Interfaces
« on: April 01, 2015, 01:15:38 pm »

Discuss :-)
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Ivan Beaver

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Re: Measurement Interfaces
« Reply #1 on: April 01, 2015, 07:08:55 pm »

I know I will get some flack for this, but here is a interface that simply works.

No software-no drivers.

Just plug it in and the software will see it.  Select "device" and you are good to go.

The price is right-so if you lose it-no big deal.

The cheaper one is the Behringer UMC202.  If you want balanced outputs and more inputs the UMC404.

I have been playing around with it for a little while and am pleased.

Every now and then there is a "diamond in the rough".
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Jay Barracato

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Re: Measurement Interfaces
« Reply #2 on: April 01, 2015, 07:16:40 pm »

Smaart IO

FOH space is often limited on walkups so I like the low profile and not needing external power.

Sent from my DROID RAZR HD using Tapatalk

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David Sturzenbecher

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Re: Measurement Interfaces
« Reply #3 on: April 01, 2015, 08:39:28 pm »

USBpre2 for quick small footprint jobs, Octacapture for multi-mic measurements. Love the digital gain adjustment. 


Sent from my iPhone using Tapatalk
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John L Nobile

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Re: Measurement Interfaces
« Reply #4 on: April 01, 2015, 11:46:22 pm »

I know I will get some flack for this, but here is a interface that simply works.

No software-no drivers.

Just plug it in and the software will see it.  Select "device" and you are good to go.

The price is right-so if you lose it-no big deal.

The cheaper one is the Behringer UMC202.  If you want balanced outputs and more inputs the UMC404.

I have been playing around with it for a little while and am pleased.

Every now and then there is a "diamond in the rough".

No flack from me. Behringers always had one or 2 diamonds in the rough. I've always been impressed by what the product does for the price. As long as you don't try to compare them to hi end gear they work okay and I feel that gap is closer lately
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Peter Kowalczyk

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Re: Measurement Interfaces
« Reply #5 on: April 02, 2015, 03:07:27 pm »

I've been using the MOTU 828 (mkII) that I bought used years ago as a smaart interface.  It recently suffered its second firewire port failure, and given that I no longer need its I/O count (Using Smaart 7DI; other multi-channel I/O needs covered by an X32Rack), I'm hesitant to take on another board-level repair job on the MOTU.

I have been lusting after a Sound Devices USBpre2 for some time.  However, I'm not sure if I can justify the cost when there are numerous other 2x2 balanced i/o devices at a fraction of the price, e.g. the presonus audiobox usb, or the berry-box that Ivan mentioned.

David - what about the USBpre2 made you choose it over more economical options?  Is the USBpre2 that much better?

Cheers,
P
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Lyle Williams

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Re: Measurement Interfaces
« Reply #6 on: April 02, 2015, 05:34:59 pm »

As cheap and compact a transfer function rig as I could find!

Calibrated Mic: Dayton EMM-6
Interface: ART USB Dual Pre
Platform: iPad Mini
Software: Studio Six Digital's AudioTools

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David Sturzenbecher

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Re: Measurement Interfaces
« Reply #7 on: April 02, 2015, 09:55:19 pm »



David - what about the USBpre2 made you choose it over more economical options?  Is the USBpre2 that much better?

Cheers,
P

I chose the usbPre2 because at the time, is was really the standard in a "measurement pre".   Also, it's wasn't my dime.   I used an EASERA gateway, before and absolutely hated it. It was very unreliable. The USBpre2 just works.  It has built in loopback which is very handy, and  selectable input routing which is pretty slick too. Oh XLR outputs... Why can't all preamps have that?


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Chris Tsanjoures

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Re: Measurement Interfaces
« Reply #8 on: April 06, 2015, 03:54:10 pm »

The Smaart IO is my main workhorse. I love that with Smaart Di it will configure itself as default - just connect it to your computer, launch DI, and you are ready to make measurements without selecting or creating a config.

That and its ability to calibrate the inputs for SPL without needing a piston calibrator (just the mic's sensitivity value), makes it a no-brainer. There are plenty of other 2 channel interfaces that have more robust features for the home-recording guy, but there aren't any others that have this gain reporting feature so the SIO works best for me, for what I do.
« Last Edit: March 08, 2016, 01:12:50 pm by Chris Tsanjoures »
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Miguel Angel Castro Rios

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Re: Measurement Interfaces
« Reply #9 on: October 04, 2016, 01:54:04 pm »

As cheap and compact a transfer function rig as I could find!

Calibrated Mic: Dayton EMM-6
Interface: ART USB Dual Pre
Platform: iPad Mini
Software: Studio Six Digital's AudioTools

I know you posted this long time ago, What's your opinion on the Dayton emm-6, I read somewhere that the calibration is not very good and the Mic capsule is a Panasonic?
Is this true? I have very limited budget and only need it to align subs with pa and front fills.
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Scott Carneval

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Re: Measurement Interfaces
« Reply #10 on: October 04, 2016, 02:00:54 pm »

I've been using the SMAART I/O for several years, but I've recently started using my Behringer XR18 for multi-channel measurements. I was looking for a new interface when it dawned on me that the Behringer essentially IS an 18ch USB interface. It actually saves a piece of gear because it's my mixer and interface all in one.
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Mark McFarlane

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Re: Measurement Interfaces
« Reply #11 on: March 02, 2017, 11:46:43 pm »

I know I will get some flack for this, but here is a interface that simply works.

No software-no drivers.

Just plug it in and the software will see it.  Select "device" and you are good to go.

The price is right-so if you lose it-no big deal.

The cheaper one is the Behringer UMC202.  If you want balanced outputs and more inputs the UMC404.

I have been playing around with it for a little while and am pleased.

Every now and then there is a "diamond in the rough".


Ivan, regarding SMAART interfaces, the UMC404 has been replaced by a newer version UMC404HD. Pretty cheap at $99 for 4 mic preamps and the XLR outs are a bonus.  It has global phantom.


Have you ever had a problem with global phantom and looping back your reference from/to your UMC202?  I had a problem years ago with an Edirol interface where the phantom power messed up the loopback signal.


Lately I've been using my GLD as a SMAART interface, but I'm starting to work on other people's systems more frequently and need at least 4 portable channels. $99 is pretty much a no-brainer investment.
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Nathan Riddle

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Re: Measurement Interfaces
« Reply #12 on: March 03, 2017, 10:47:47 am »


Ivan, regarding SMAART interfaces, the UMC404 has been replaced by a newer version UMC404HD. Pretty cheap at $99 for 4 mic preamps and the XLR outs are a bonus.  It has global phantom.


Have you ever had a problem with global phantom and looping back your reference from/to your UMC202?  I had a problem years ago with an Edirol interface where the phantom power messed up the loopback signal.


Lately I've been using my GLD as a SMAART interface, but I'm starting to work on other people's systems more frequently and need at least 4 portable channels. $99 is pretty much a no-brainer investment.

I thought it was just a bad idea period to run phantom into an output. I use the an XLR-F to TRS-M for the reference signal.
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Mark McFarlane

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Re: Measurement Interfaces
« Reply #13 on: March 04, 2017, 02:33:00 pm »

I thought it was just a bad idea period to run phantom into an output. I use the an XLR-F to TRS-M for the reference signal.


You are correct. I think I didn't have the right cable,... it was a decade ago.
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Mark McFarlane
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Keith Broughton

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Re: Measurement Interfaces
« Reply #14 on: March 04, 2017, 03:05:37 pm »


Ivan, regarding SMAART interfaces, the UMC404 has been replaced by a newer version UMC404HD. Pretty cheap at $99 for 4 mic preamps and the XLR outs are a bonus.  It has global phantom.


Have you ever had a problem with global phantom and looping back your reference from/to your UMC202?  I had a problem years ago with an Edirol interface where the phantom power messed up the loopback signal.


Lately I've been using my GLD as a SMAART interface, but I'm starting to work on other people's systems more frequently and need at least 4 portable channels. $99 is pretty much a no-brainer investment.
I use the 404HD and take a TRS from out 4 (set as test out) and loop it back (TRS) to input 4.
This gives 1-3 mic channels with phantom for measurements and channel 4 is reference.
No issue with phantom on TRS inputs.
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Ivan Beaver

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Re: Measurement Interfaces
« Reply #15 on: March 04, 2017, 03:55:26 pm »


Ivan, regarding SMAART interfaces, the UMC404 has been replaced by a newer version UMC404HD. Pretty cheap at $99 for 4 mic preamps and the XLR outs are a bonus.  It has global phantom.


Have you ever had a problem with global phantom and looping back your reference from/to your UMC202?  I had a problem years ago with an Edirol interface where the phantom power messed up the loopback signal.


Lately I've been using my GLD as a SMAART interface, but I'm starting to work on other people's systems more frequently and need at least 4 portable channels. $99 is pretty much a no-brainer investment.
My standard cable that I use for dual transfer functions has a TRS on one end-but only hooked up to the T and S.

There are 2 cables that come out of the connector.
The connector plugs into the headphone output.

One is a TRS-with the hot to tip and the shield to R (no connection to shield)
This goes to the TRS input of the reference channel

The other cable is a MXLR that has the tip hooked to pin2 and the shield hooked to pin 3.

This allows me to vary the SPL out of the loudspeaker, without affecting the signal displayed-since both the reference and measurement go up and down at the same time.

It is also REAL good for looking at power compression of drivers in real time.
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Ivan Beaver
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