32 front PTT10 & 24 rear PTT10’s - Ultimate Trinnov Waveforming TM Wallscreen setup!
The PTT10.0X04-NAB-01 is a 10-inch extended woofer from Purifi Audio. It has the following specifications:
Nominal impedance: 4Ω
Cone material: Black anodized aluminum
Linear excursion, Xlin: ±14.75mm
Maximum mechanical excursion, Xmax: ±25.0mm
Motor efficiency factor, Beta: 40.7 (N/A)^2/Ω
Efficiency Bandwidth Product, EBP: 66.7Hz
NO CHUFFING OR COMPRESSION THROUGH 1’SQ APERTURE
Under the assumption of linear excursion (Xlin), where the woofers operate within ±14.75mm, the air displacement in the sealed enclosures would be moderate, and the airspeed through the 1 square foot aperture should not reach levels that would cause compression or "chuffing" (port noise). This is due to the following reasons:
1. **Adequate Aperture Size**: A 1 square foot aperture is a large area for the air to move in and out, which should minimize the air velocity, reducing the potential for noise generated by high-speed air turbulence.
2. **Enclosure Design**: The sealed design of the individual enclosures means that the woofer's back wave is contained, which typically results in less air movement compared to ported designs, where the back wave is used to reinforce the front wave through the port.
3. **Linear Operation**: Within the linear range of the woofer's excursion, the air movement is smooth and controlled, reducing the risk of creating non-linear effects such as port noise or compression.
The summarized analysis suggests that under normal operating conditions, where the woofers remain within their linear excursion limits, the common 1 square foot aperture should not cause compression or chuffing effects.
SCREEN SIZE INCREASE UNLOCKED BY LABORIE VERTICAL DISPLACEMENT HACK SIDE RIGHT DRAWING
INCORPORATING INNOVATIVE ELASTIC CONE EDGES IN QUAD OPPOSED SUBWOOFER DESIGN FOR COMPACT, POWERFUL ULTRALOWFREQUENCY PERFORMANCE WITH INHERENT INERTNESS.
4 DIRECTION FORCE CANCELLATION
OM-20
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THE CALCULATION
If the goal still is to get 125dB at 7Hz, then going up to the 10in will help since it has higher excursion and bigger cone area.
Similar calculations as above:
1 x PTT10.0X04-NAB-02 in 35L with DSP corrected so that 7Hz is 10dB down gives a SPL aorund 91dB @ 7Hz within the drivers macimum excusion.
With 7dB room gain we come up to 98dB. Meaning we need 27dB more, 4.5 times more woofers = 23 woofers, so probably move it up to 32 woofers to get 8 x 4.
So my best guess is that it should be doable with the 10in.
Then with the DSP, we make a Linkwitz Transform to give it more boost in the bass. Here I have boosted it down to 12Hz Q0.71 and shown the results with 2V peak on the speaker
KEF IN WALL/IN CEILING ADVANCED METRICS LOUDSPEAKERS
60 degree dispersion is the only way to handle center channel on a videowall immersive lounge.
CI 250 RRM THX IN-CEILING
ELIPSON A2700 THE OPTIMAL OM-20” SUBWOOFER AMPS - 2 CHANNEL (2HZ-60KHZ)
The most impressive thing about the Elipson A2700, however, is the dynamics in the bass range. The amplifier manages to kick life into the speakers in a completely different way than the NAD C 298 ( From Purifi), which with its 2 x 340 watts into 4 ohms is by no means weak.
The drumbeats in Sorten Muld’s “Balladen om Iver og Bushke” hit with a physical power that I didn’t think was possible from a 6.5-inch bass/midrange unit in a compact cabinet. And it’s not just about power, but about control. And whether the amplifier can deliver five or ten times more, respectively, than the speaker can handle should in principle be irrelevant. But it has power – and that makes a difference.
THE BELOW MATRIX IS BEING UPDATED
THE 1-500HZ LOW FREQUENCY TRANSPARENT FLOORING DECKING SPACING PATTERN IS ENGINEERED TO MATCH THE CEILING OF THE WAVEFORMING EFFECTIVE RANGE THROUGH THE UPPER MID BASS ACCORDING TO REGULAR PHYSICS. THIS CONCEPT WAS VALIDATED AT CEDIA23 BY BUILDER OF THE BEST IN SHOW DEMO BOOTH
THE DYNAMIC TRIO OF PIONEERS IN IMMERSIVE WALLSCREEN CINEMA ARE READY TO ASSIST YOU AT A MERE FRACTION OF PREVIOUS BUDGETS. WITH THEIR RAPID DEVELOPMENT 120 DAY PROCESS.
BI DIRECTIONAL BASS-BI HEMISPHERIC ZONED BM READY
BI-DIRECTIONALITY WITH THE COMPLIMENTS OF HOME CINEMA FRANCE WHERE ON A PODCAST IT WAS ANNOUNCED
SHADE AND CURTAIN PRESET BASED ACOUSTICS
THE CORRECT TOPS SPACING TO ACHIEVE PROXIMITY EFFECTS.
SHADE PRESETS AS ACOUSTICAL SCHEME
LUTRON SHADES, CURTAIN TRACK, LIGHTING CONTROL, KEYPADS.
CURTAINS
A SIMPLE LUTRON 24 VOLT CABLE PREWIRE
