Old Production Takes From an Old Guy

Winter NAMM 2011: Lectrosonics Digital IEM

Lectrosonics Quadra IEM Lectrosonics Quadra IEM 4-Channel ReceiverSpeaking of wireless IEMs, Lectrosonics showed off their new Quadra IEM system. It’s called the Quadra because, you guessed it, there are four channels of audio transmitted to each receiver. It’s all digital using spread-spectrum technology and RF performance is said to be crazy-good. We listened to a brief demo and it sounded as good or better than any IEM I’ve ever heard. And the ability to send four channels could be a big plus in certain situations.

Lectrosonics Quadra Transmitter Lectrosonics Quadra TransmitterConsider these options: First, you could send a stereo mix plus the performer’s vocal and instrument. That gives them immediate “more me” control right on the pack. Or, you could send two stereo mixes (ch. 1&2 and ch. 3&4) from one transmitter and set up two packs to pick off their own stereo mix. That greatly increases transmitter density and saves some money on hardware. As is typical for Lectrosonics, the quality is extremely high; it’s all engineered and built right here in the USA. It’s also not cheap; figure around $3500-3800 a channel street. For churches it might be a bit steep. Then again, it might be exactly what some need.

7 Comments

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  2. bill@billwhitt.com

    With the D/A conversion, is latency an issue? I’ve heard that those few ms of delay can create a comb filter when it interacts with a singer’s own bone conduction. (Then again, I use Aviom all the time and never notice that.)

  3. bill@billwhitt.com

    With the D/A conversion, is latency an issue? I’ve heard that those few ms of delay can create a comb filter when it interacts with a singer’s own bone conduction. (Then again, I use Aviom all the time and never notice that.)

  4. mike@churchtecharts.org

    Bill,
    If I remember right, when using analog inputs, latency is around 1 msec. If using the built in AES inputs, it’s well under that. So it’s pretty fast…
    mike

  5. mike@churchtecharts.org

    Bill,
    If I remember right, when using analog inputs, latency is around 1 msec. If using the built in AES inputs, it’s well under that. So it’s pretty fast…
    mike

  6. erik@jerde.org

    Bill – it generally takes more than a few ms of delay before a performer will notice the delay. Consider that with the current digital desks out you’re already adding latency. Now eventually all that added latency will have an affect. Fortunately the Quadra supports AES/EBU input at 24bit 48K so if you stayed digital out of a digi desk then there should be little to no added latency over analog IEM on a digi desk. Plus Lectrosonics is top notch, I highly doubt they’d launch a product like this that had delay issues.

  7. erik@jerde.org

    Bill – it generally takes more than a few ms of delay before a performer will notice the delay. Consider that with the current digital desks out you’re already adding latency. Now eventually all that added latency will have an affect. Fortunately the Quadra supports AES/EBU input at 24bit 48K so if you stayed digital out of a digi desk then there should be little to no added latency over analog IEM on a digi desk. Plus Lectrosonics is top notch, I highly doubt they’d launch a product like this that had delay issues.

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