Low speaker volume when playing midi files in quicktime

I have the exact same problem. Both the Quicktime plugin for Safari or Firefox and the stand-alone Quicktime 7 play MIDI at extremely low volumes. I found elsewhere recommended to use shift while moving the volume slider on the browser plugin QT. Doing that shows a few extra notches on the scale, but the MIDI playback volume remains unchanged. For the stand-alone QT 7 one can hold down shift and press the up arrow. This does not boost the MIDI playback volume. I also noticed that the volume works fine with MP3 or AIFF.

It looks like Lion has severely throttled our MIDI playback possibilities. I hope someone will post a work around. I just finished putting together an interactive web interface for creative math to MIDI experimentations. And sadly, I can't use it anymore after upgrading to Lion.

My MB Air on Lion has the same problem. Midi played through finder preview or Quicktime has a very low volume level, but any other audio content plays at an expected level.

I have the same problem on my Mac Pro running OS 10.7.2 - very quiet sound.

It also happens on a Mini running OS 10.7.2.

It does NOT happen in OS 10.4 - 10.6.

Same issue here. Please file a bug report with Apple. This may help getting their attention.

I have submitted the following bug report to Apple:

Summary: Web page midi files play very quietly in OS 10.7.2

Steps to Reproduce:

1. Ensure Mac's sound output level is set to maximum.

2. Go to any web page containing an embedded midi file e.g.

http://www.ardacad.co.uk/christmas/carol.shtml

Expected Results: Normal sound level

Actual Results: Very low sound level

Regression:I use a Mac Pro but It also happens on a 2011 Mac Mini running OS 10.7.2.

It does NOT happen in OS 10.4 - 10.6.

Notes:

I'm having the same problem here, and it's making my life as a music student rather difficult at the moment.

Seriously Apple, can we get a fix to this bug already? The original post was from 8/21, but I've seen people w/ similar problems post to this community forums from as far back as July.

• MIDI playback thru Sibelius 7 is unbelieveably low, nearly inaudible
• MIDI playback thru Quicktime yeilds the same results
• I've seen a workaround to the problem by importing the MIDI file into Garageband, but that's just plain asinine.

This bug alone makes me regret updating to Lion.

Even a hotfix would be preferable in lieu of a major update.

I second this. Apple, please update this. GP6 is an important asset in my Music Production, I would appreciate the Support!

Same issue here!! I can't play with tuxguitar!

Try to replace the CoreAudio.component bundle (/System/Library/Components/CoreAudio.component) with the corresponding one from Snow Leopard

Replacing Lion's CoreAudio.component with the one from Snow Leopard made no difference .... but thanks for trying to help anyway.

Ian

Just in case... It is not enough just to rename the native CoreAudio.component leaving it in the /System/Library/Components folder, and then copy the one from Snow Leopard there. You should move the native Lion's CoreAudio.component to any other folder...

I put the Lion CoreAudio.component in the trash then replaced it with the Snow Leopard CoreAudio.component. So we are no further forward. Maybe Mountain Lion will fix it.

Ian

Same issue, brand new macbook air, received it last night, Sibelius audio volume is inaudible, greatly dissapointed at this point with apple, I thought apple products did not have these issues, and this is a big issue, not just some small hidden detail.

Add another "me too" for posterity, I delayed upgrading to Lion for the longest time because I was paranoid of stuff randomly breaking, and oh look, I can hardly hear my midis, and I NEED to hear midis. I can jack the sound up to Ludicrous Levels, then as soon as some alert plays, my ears get blasted....

I remember my old 10.4 macbook had a whole settings panel for midi where maybe I could fix it somehow, but it seems to have disappeared since then.

one-year-old iMac, Snow Leopard to Lion upgrade, all updates applied.

Please fix this.

We use Macs at our music school, where students come in and use the computers for Ear training. Music training softwares all rely on MIDI for sound playback. So we can increase the system volume, but everytime students make mistakes, they hurt their ears.

We want to TRAIN them to hear properly, not induce hearing loss !