Resimercial HDMI problems

After an installation with HDMI cables is completed and all the equipment is connected, if there is no picture, the installer will need to expend time searching for the problem.

Resetting the units will sometimes solve the problem, but many times it is not fixed.  The installer will need to contact the manufacturer to replace the devices.

A lot of labor and time has been wasted!
Most of the HDMI system problems are classified into two types:
  • Communication problems caused by EDID handshake or HDCP copyright
  • Signal strength problems caused by cable being too long

Luxi Electronics offers simple solutions that the integrator should always consider carrying on the jobs.


To fix communication problemsLuxi HDMI Communicator will change the sequence and timing to avoid conflict.


To fix signal strength problemsLuxi HDMI Extender will boost the signal.

Carry one of each. One of them will fix the problem!
Plus a spare 5 V power adapter, just in case!

No external power! 
The Extender never needs power.
The Communicators only sometimes.

Simple installation!

Courtesy of Luxi Electronics


Consider glass made loudspeakers

Speakers are normally built out of wood as are musical instruments! But not all musical instruments are made of wood, such as saxophones, trumpets, cymbals etc.. In a violin or a guitar, the wooden body participates in the pitch and sound by vibrating.

In the case of a loudspeaker, it is the movement of the driver and not the vibration of the cabinet that produces the sound. In fact, cabinet vibration erodes audio quality.

A speaker should have a rigid structure… and glass provides that!

The highly interesting choice of a loudspeaker made of glass is not just for its aesthetic qualities, but also for its extreme density. There is no cabinet vibration to alter the PURE sound reproduction.


Consider Waterfall Audio Glass Speakers in your next project!

Courtesy of Waterfall Audio

Best Practices for Ceiling Mic Installations

Customers like ceiling microphones for a variety of reasons — no cables on the table, no drilling holes in tables, a more aesthetically pleasing design and freedom to move around the room.

Many technological advancements and improvements in microphone design make it possible for ceiling microphone quality to be as good, if not better, than tabletop mics in many environments.

The ceiling tile surrounding the microphone enhances low-frequency response, making voices sound more natural than tabletop microphones.

Best Practices for Ceiling Microphones Installations

Develop an acoustical model
An acoustical model is based on room dimensions, materials, application, and acoustics.  It will help to determine whether ceiling microphones are appropriate for the room, the number of mics needed, and where they should be placed to deliver the desired coverage.

Figure 1: Room 34’ x 19’  /  Figure 2: Room 23’ x 21’
Even though one room is larger, with a larger table, the rooms require the same number of mics to achieve the desired coverage. If an acoustical model had not been developed, the larger room would have been over miked.


Minimize ceiling noise
HVAC air movement from the ceiling creates noise that is extremely hard to remove from the audio path.  Only the mixers with sophisticated algorithms with individual per-channel processors can reduce the noise without generating audible artifacts.  Because air vents push air down toward the floor, flush-mount ceiling microphones have a natural advantage over hanging mics since they are mounted out of the air path and are not impacted by this type of noise.

Configure microphone settings for best performance
Mics must be configured for the mixer to which they are connected in order to perform as intended.  It is important to consider the mixer input sensitivity, which for most ceiling-installed mics tends to be higher than for tabletop or gooseneck mics.  All professional mixers that support multiple mic types allow the setting of proper mic sensitivity.

Create zones for voice lift
Voice lift is the concept of allowing participants in large rooms to hear each other within the room.  A technique used to accomplish this is to divide a large room into two or more zones for speakers and mics.  The mics in each zone feed the speakers in the other zones, thus minimizing the occurrence of feedback.  Voice lift is often used in rooms where participants may be more than 30 feet apart.

Test system to ensure quality
On completion of installing the equipment, the performance of the system needs to be evaluated.

Hanging microphones were designed to close the talker-to-element distance.  This reduces the pickup pattern area, requiring more mics for a specific room adding complexity and noise into the system.  In addition, that hanging microphones are more sensitive to air motion, which creates white noise in the background.

Consider Flush Ceiling Microphones!!!

Courtesy of CTG Audio

RESIMERCIAL Opportunities

The first part of this year has been dramatic and confused.  We now see that the market is reacting and sales are dramatically improving.

Customers are willing to invest money after the lockdown.  They wish to improve, change or acquire technology.  This is a positive situation in the mid/high end of the AV market (not the same situation in the lower end).  It makes us very optimistic for business in the coming months.

We have the right product mix with the right prices to match customer requirements, face the competition and provide good margins.

Learn more and add value to your product lime!

RESIMERCIAL “Where Residential Meets Commercial” presentations:

  • CTG Audio: Friday August 14 at 11am EST.
  • Lightlink: Wednesday August 19 at 2pm EST.
  • Luxi Electronics: Friday August 21 at 2pm EST.
  • Waterfall Audio: Wednesday August 26 at 11am EST.
  • SIM2: Friday August 28 at 11am EST.

Meet CTG Audio Microphones

CTG Audio manufactures high-performance microphones with a focus on ceiling based systems.

“These flush mounted microphones are unobtrusive (visible portion being smaller than a dime) and cables are hidden.”

CTG Audio systems allow participants to:

  • talk in a very natural tone and volume.
  • move around the room with no compromise in audio quality.
  • contribute without the passing around of a hand-held microphone.
  • identify who is talking at the distant end since the true timbre of the voice is being transmitted.
“The microphones are easily integrated with the current popular IP Video conferencing software such as: Skype, Zoom, Microsoft Team etc.”

CTG Audio systems are typically used for teleconferencing, presentation venues, distance learning, meetings that require recording, classrooms, courtrooms, etc.

“The table microphone can be plugged into a computer sound card to provide wide coverage of conference areas.”