ProFire 2626 Line input levels are quite low

[tash]

double post. sorry

[theaero]

Have any conclusions been made yet?

Also, are the outputs +4 or -10?

[mlange]

Well. If you're talking about Pro Tools' own digital meter, its scale is dbFS. So it it reads -18db on Pro Tools it is -18dbFS. It won't be -36db.

For your unit, -18.00db on Pro Tools = +1.6dbu(VU) on the analog scale.

Sorry I just don't get 'VU WITHIN pro tools' part. English ain't my native toungue.

If it's 'dbVU', then you must be using some plug-ins or analog meter because Pro Tools itself uses 'dbFS' like any other DAWs, though?

Only way if it's your unit or it's by the design, contact M-Audio or have it checked by the store you bought it.

Sorry Tash, but 0VU within PTMP on any of the PTMP individual channel meters is -18dbfs. If a signal reads -18VU within PTMP on it's meters then it really is a -36dbfs signal(-18 below 0VU = -36dbfs).

-36dbfs is nowhere near the *normal* range a +4dbu line-level signal should read.

Really, all a 2626 owner needs to do is try inputting a +4dbu TRS line-level signal.

[theaero]

Any other 2626 users have this problem or tried sticking a +4dbu signal from a pre or something similar into their unit?

[KingStudios]

You know, I personally haven't had any problems with my 2626. I've always been able to figure out how to get a good signal in, but I always had the pressure of being in the middle of a session. This probably doesn't help any and I'm sorry. I love my 2626.

[mlange]

Thanks Eric - so you've no issues hitting the 2626's line-level AD with a hot signal? Not that you would ever want to, but you can peak PT's channel meters into overload using a 2626 TRS line-level input? That would be the extent of the *test*.

We hope that our current unit is the only one.... M-Audio has shipped me another unit (thank you M-Audio!!), so I'll report back as soon as it arrives.

[theaero]

*awaits reply*

I ordered mine through M-audio's employee program, and its backordered until july =[

[mlange]

GREAT NEWS - Just had an outstanding series of calls from Calvin Banks of M-Audio.... what a class act.

The ProFire 2626 as a product line is 100% A-OK - they just verified the TRS signal path and there's no issues with line-level inputs!!

My unit's just malfunctioning - but being replaced as I type

For anyone who's interested, I'll post the replacement's results later this week.

[tash]

Nice! Great customer service. Post back with the result.


There seems to be confusion, though.

1: Meters within PT are measured in dbFS not VU
2: Not all devices are calibrated to 0dbu=-18dbFS

some devices for HD system might be set to -18dbFS, but other devices? It really varies unit to unit. I got presonus mic-pres connected to my projectmix using lightpipe. The presonus unit's maximum input is +22dbu and its reference level for D/A is 0db=-18dbFS. It's nowhere near 0dbFS within PT, too, but still it's 0db we are trying to keep the signal close to.

Remember anything above 0db(FS) within PT will be digitally clipped. That's why they set 0dbu significantly lower than 0dbFS for many gears. Many gears are calibrated so the maximum input level will euqual 0dbFS.

If everthing is recorded closed to 0dbFS, the mix will have a lotta distortion. This is exactly what happened to early digital recordings.

[mlange]

No confusion here Tash - insert the Bomb Factory VU and there's your meter.....

As long as your injecting a sine wave to set levels, you'll have the identical reading on the channel's peak LED meter or the VU.

0 on the peak meters or the BF VU = -18dbfs

This is true for MP & LE.