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Apogee Duet gain and hiss

I have an Apogee Duet and was testing it out with Shure SM-58 and SM-81 mics. I have noticed that I can only turn the input gain up about 30% before I get some hiss in the headphones. Is this pretty much to be expected with these particular mics, or should be able to get more clean gain?

My Duet is new and I guess I'm not quite sure what to expect. I'm trying to determine whether my unit is functioning properly and is up to spec.

I would really appreciate any help. If you happen to have a Duet and SM58 and are willing to try it out, that would be a huge help for me. Thanks!

MacBook Pro late 2008, Mac OS X (10.5.6), iPhone 3g, Time Capsule

Posted on Mar 28, 2009 8:48 AM

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40 replies

Mar 28, 2009 12:23 PM in response to ClayG

Hi Clay,

sorry about the question;

Where did you plugged the mics?

Instrument, XLR mic, XLR line -10db or +4 db?

I don't have a 58 near now, made a simple test with an AT cardioid, With XLR mic In:
dead quiet until 60%, but my voice was on red (clipping since 50%)
About 65% starts some noise floor (and I can ear my wife dealing with papers on the next room:)
input on 30% is dead quite, like it has a gate on.
Tells us how you're progressing.
Peace,

Jorge

May 4, 2009 1:27 PM in response to ClayG

I am also having the same problem with a Duet I purchased last November.

I just recorded with it for the first time last night. I'm using a Rode NT2 plugged into Input 1 on the Duet. The Input setting is for XLR Mic (so please don't bother mentioning the +4 or -10dB settings, thank you).

I brought the levels up to where I got a proper level for my acoustic guitar (no amp). I noticed a HUGE amount of hiss.

I also tried what ClayG said in another thread, and disconnected the mic from the input, then turned the level all the way up, and I found the source of the hiss: It had nothing to do with my room noise (which is almost non-existent), the hiss came from the Apogee.

I'm really disappointed with this. Everyone is always raving about how quiet this thing is supposed to be, but I've never heard an interface so noisy before.

Anyone who says their Duet is quiet, please perform the following test before responding: Disconnect the mic from the input; turn on phantom power, and put the level of the input all the way up, and listen with headphones. Do you hear hiss and static? I hear a lot, and this is obviously the source of the hiss on my recording.

I can record with an acceptable level of hiss with the input level set to 43 or below. Above that, the hiss is very very noticeable. Unfortunately, 43 is too low to get a proper level for a quiet acoustic instrument.

Also getting very buggy behavior with the Maestro software (version 1.7.1).

I'm very disappointed with all the problems I've had with the Apogee Duet.

May 4, 2009 2:48 PM in response to thomas2222

thomas2222 wrote:
What is a DI, and how much does it cost?

For $500, I think the Apogee Duet is a piece of crap. I've never heard so much noise from what is supposedly a "high end" interface. This thing is a joke.


I think you need to check with Apogee... there were some bad/noisy units that went out.

It might be worth your while!

pancenter-

May 4, 2009 2:52 PM in response to Pancenter

I did email them a few hours ago. Still no response (i.e.,not even an auto-generated one).

I think this box is vastly over-hyped. I'll bet that if most users actually test this, by removing the mic from the input, turning on phantom power, and jacking the level all the way up, they will hear the same hiss and noise that I am hearing.

Most people have likely never tested it, and they don't mind the hiss because they are playing loud instruments.

May 4, 2009 2:55 PM in response to Pancenter

And I'm not looking forward to shipping this (at my expense) to get another defective unit, as has happened to other users multiple times. I just want my money back, which is, I'm sure, the last thing that Apogee will be giving me. I don't have months to ship, at my expense, back and forth only to waste my time with another identically defective unit. I'm really irked because the recording I wanted to do last night was critical, and the Apogee Duet made that impossible.
Lots of downtime this thing is costing me, and now I will have to pay to ship yet more defective units back and forth to this company. I had much better performance from my $250 Echo Gina. If it worked on my current machine, I wouldn't be wasting my time with Apogee. Definitely the last purchase I make from them.

May 4, 2009 3:39 PM in response to thomas2222

I did email them a few hours ago. Still no response (i.e.,not even an auto-generated one).


Thomas: sorry to hear of your Duet problems, but for every report of a 'bad' Duet there're probably 50+ happy users - very few users post 'happy' reports.

Apogee is a very good company for tech. support - why not pick up a phone and call them at 310 584-9394. Chances are you'll get this resolved very quickly.

May 4, 2009 5:13 PM in response to thomas2222

Update: Apogee Tech Support did get back to me, and I will be sending the unit in for repair.

So that's good that their tech support has been responsive. I was a bit frustrated earlier (because of a huge amount of hours lost screwing around with this), and was perhaps a little harsh on them (although the unit is in fact defective).

They are making good on the situation though, so I have to give them props for that.

The tech had me test Input channel 2 - and that in fact seems to be working perfectly - only Input 1 is messed up and causing the hiss. Since I am only recording one channel, I can at least proceed with my work until we get this resolved.

So I appreciate Apogee's responsiveness and fairness on this. I'll reply back to this thread when I get the repaired unit.

Apogee Duet gain and hiss

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