I use the HearBack Technologies system in my studio, but a number of folks find it distracting to have some stems in their left ear, others in the right.
The Hearback is a great thing as it lets the musician mix their own darn headphone mix... which changes as the session goes on
the down side of the 8 channels system
Channels 1&2 are a stereo pair (that's life you live with it)
3, 5, & 7 are L
4, 6, & 8 are R
3 can be stereo linked with 4, 5 with 6, etc, but this limits the amount of individual track control as the stem sends need to panned to the middle... otherwise they're still hard-panned L and R
I'm thinking of making a small passive summing "amp" but I'm wondering
a) the headphone signal is too hot and would need higher value resistors
and b) if so, would I need to add a stage of gain to bring the signal back up (which means the circuits now becomes an active circuit and a PS is required)
I've does searching around, but what circuits I've found seem to be directed at summing multiple stereo signals into a single stereo output) I want Stereo -> Mono
I contemplated just making an adapter plug that would short the TRS to TS... but I'm suspect this is a flawed idea...and rather that smoke a piece of gear, thought asking for advice was wiser
The Hearback is a great thing as it lets the musician mix their own darn headphone mix... which changes as the session goes on
the down side of the 8 channels system
Channels 1&2 are a stereo pair (that's life you live with it)
3, 5, & 7 are L
4, 6, & 8 are R
3 can be stereo linked with 4, 5 with 6, etc, but this limits the amount of individual track control as the stem sends need to panned to the middle... otherwise they're still hard-panned L and R
I'm thinking of making a small passive summing "amp" but I'm wondering
a) the headphone signal is too hot and would need higher value resistors
and b) if so, would I need to add a stage of gain to bring the signal back up (which means the circuits now becomes an active circuit and a PS is required)
I've does searching around, but what circuits I've found seem to be directed at summing multiple stereo signals into a single stereo output) I want Stereo -> Mono
I contemplated just making an adapter plug that would short the TRS to TS... but I'm suspect this is a flawed idea...and rather that smoke a piece of gear, thought asking for advice was wiser
Multiple stereo into single stereo would be, as example, an 8-to-2 mixer. You want a 2-to-1 mixer. The circuits are basically the same, only scaled down. Searching "mixer" and "summing amplifier" in these forums should result with just what you want.
Sofaspud- I've tried numerous searches, summing to mono, summing stereo to mono, stereo to mono converter... I'm not finding what I'm looking for
The dilemma is the digital output is sent to the HearBack which has it's own gain stage ( and it can get quite LOUD... some of my cherished old musician friends still needs to go to Spinal Tapped... when 10 isn't quite enough....) Between the digital output and the analog of the Hearback, it's a balancing act to avoid clipping/distortion, hence my concern over adding another stage of gain
The isolated mono in left or right headphone seems to really affect some people more than others, so if I can sum after the Hearback without introducing distortion, the ability to control individual stems remains a plus.
I've contacted Hearback and they will modify the headphones to all mono channels (although they are still 4L and 4 R and the mod involves eliminating the limiter (which is designed to protect your ears form transient spike
I suppose the beat approach is to start breadboarding and do A/B recordings to compare the waveform amplitudes
Rolls had a small headphone distribution amp Rolls DA134 that had a mono/stereo out switch, but I cannot find a schematic for it... I'd like to see if the switch activated a simple passive summing
The dilemma is the digital output is sent to the HearBack which has it's own gain stage ( and it can get quite LOUD... some of my cherished old musician friends still needs to go to Spinal Tapped... when 10 isn't quite enough....) Between the digital output and the analog of the Hearback, it's a balancing act to avoid clipping/distortion, hence my concern over adding another stage of gain
The isolated mono in left or right headphone seems to really affect some people more than others, so if I can sum after the Hearback without introducing distortion, the ability to control individual stems remains a plus.
I've contacted Hearback and they will modify the headphones to all mono channels (although they are still 4L and 4 R and the mod involves eliminating the limiter (which is designed to protect your ears form transient spike
I suppose the beat approach is to start breadboarding and do A/B recordings to compare the waveform amplitudes
Rolls had a small headphone distribution amp Rolls DA134 that had a mono/stereo out switch, but I cannot find a schematic for it... I'd like to see if the switch activated a simple passive summing
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I'm on a Mac Digital Performer-RME FF800, Audient ASP008, Lucid 8824 (mainly used as the clock)
HearBack has no affect on the final mix, it's just for the performer's headphone mix while they are recording. latency is 1.5 msec... and while some say they can hear it...most cannot...and if there is any lag in the recorded track it is compensated for
HearBack has no affect on the final mix, it's just for the performer's headphone mix while they are recording. latency is 1.5 msec... and while some say they can hear it...most cannot...and if there is any lag in the recorded track it is compensated for
Audio Signal Mixing
Pay particular attention to Figure 4. That's what you need. Separate attenuation for each input included.
Pay particular attention to Figure 4. That's what you need. Separate attenuation for each input included.
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