Bose E4 manual Paging operation, Zone EQ operation

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6.0 E4 System Setup

Paging operation

When a page signal is triggered, the music signal is ramped down according to the ducking time. The ducking time is preset at 20 ms for Auto detection and 0 ms for PTT triggering. The music level is reduced by the ducking depth which can be adjusted using the ducking depth control. Ducking depth is adjustable from 0 to –40 dB. Once a page is completed and the Hold Time has elapsed, the music volume is ramped up accord- ing to the ducking release time, which is adjustable from 0 to 5 seconds in 0.5-second increments.

6.3.7 Zone EQ

The Zone EQ control panel provides a three-band equalizer for adjusting the sound quality of the zone.

Music signal

Ducking depth

0 to –40dB

Page signal

Ducking Time:

Fixed at 20 ms for Auto Detection,

0 ms for PTT Detection.

Hold Time 0 to 5 secs

Release Time

0 to 5 secs

Click and drag each slider to the level you want. The scale on the left side of the panel is expressed in dB.

Factory default settings

Low

Mid

Hi

 

 

 

0 dB

0 dB

0 dB

 

 

 

ZONE EQ operation

The center frequency and shape of each EQ band is fixed and can be adjusted by ±6 dB.

LF-EQ

∑

MF-EQ

Programmer’s Note: The attack time for a page is approximately 1 millisecond for a PTT input and 20 milli- seconds for a voice-activated input.

HF-EQ

•The low-frequency EQ (LF-EQ) is a low-pass shelf EQ with a corner frequency of 125 Hz and a roll-off of 6 dB per octave.

•The mid-frequency EQ (MF-EQ) has a center frequency of 1.6 kHz and a Q of 1.

•The high-frequency EQ (HF-EQ) is a high-pass shelf EQ with a corner frequency of 8 kHz and a roll-off of 6 dB per octave below this point.

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Contents FreeSpace E4 Series II Business Music System Contents Contents Set the E4 rear panel Power switch to on Installing the softwareConnecting to the E4 system Power switchLaunch the FreeSpace Installer software Incompatible microcontroller code No hardware detectedSample design files Installer software user interface Tool box Mode buttonsService Hardware Selects the Service Hardware mode Window sizing toolsSet Up Hardware mode Hardware paneSet Up Schedule mode Setting the clock Adding eventsRemoving events from the list Viewing and changing event settingsAdds a zone Auto Volume event Adds a zone Source Change eventService Hardware mode Connecting your PC to an E4 system IntroductionOutput gain circuit block diagram System setup procedureFactory default settings Output gain setup sequenceGain Setup Zone setupOutput gain controls To add a subzone Input gain circuit block diagramInput gain To delete a subzoneInput gain controls Input gain setup sequenceInput Line Input Types Selection Initial Gain To unassign a source Source assignTo assign a source to a zone To route a source to a zoneSetup Source EQSetup controls Setup with Opti-voiceoffSetting up Multi-zone paging Paging operation Zone EQZone EQ operation Auto Volume Auto Volume Tracking Off Auto VolumeAuto Volume calibration button Dynamic EQAuto Volume setup procedure Important Before you calibrate Auto VolumeSense E4 System E4 System Setup E4 System Setup Resetting a calibrated Auto Volume zone Click to reset Auto Volume calibrationAuto Volume operation When to repeat the Auto Volume calibrationAuto Volume controls Changing Auto Volume Tracking after calibrating a zoneStandard user interface operation Enabling keypad operationTurning the system on Standard User InterfaceAuto Volume User Interface Auto Volume user interface operationAuto Volume User Interface Example Multi-zone paging user interface operation Bose Product Sales Conditions
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E4 specifications

Bose has long been a leader in audio technology, and their remarkable Bose E4 model epitomizes this legacy. Designed for both professional musicians and discerning audiophiles, the E4 is engineered to deliver an unparalleled listening experience.

At the heart of the Bose E4 is its state-of-the-art audio performance. The headphones are equipped with advanced drivers that produce a balanced sound profile, ensuring clarity across all frequencies. This extends from deep, resonant bass to crisp, high-frequency notes, making them suitable for a wide range of music genres. The soundstage is expansive, allowing listeners to immerse themselves in the music as if they were in a live performance.

Comfort is a priority with the E4, featuring plush ear cushions that conform to the shape of the ears. The lightweight design reduces fatigue, making them ideal for long listening sessions or extended studio work. The adjustable headband provides a secure yet comfortable fit, enhancing the overall listening experience without compromising style or functionality.

The E4 also incorporates Bose's renowned noise-canceling technology. This advanced feature blocks ambient noise, allowing users to focus solely on their music or audio productions. Whether in a noisy environment or during travel, the noise-canceling capabilities help maintain audio integrity by minimizing distractions.

Another distinguishing characteristic is the durable construction of the E4. Crafted from high-quality materials, the headphones are designed to withstand the rigors of daily use, making them a long-lasting investment. The foldable design adds an element of portability, allowing users to easily store and transport them without damage.

Connectivity options are versatile with the E4, including both wired and wireless options. The inclusion of Bluetooth technology allows for seamless pairing with devices, providing the freedom to move without being tethered by cables. Additionally, the integrated microphone enables hands-free calling and voice assistant interaction, blending convenience with high-quality audio.

In conclusion, the Bose E4 headphones embody the perfect marriage of advanced technology and user-focused design. With exceptional sound quality, impressive noise cancellation, comfortable ergonomics, and durable construction, they stand out as a top choice for anyone serious about their audio experience. Whether for professional use or personal enjoyment, the Bose E4 delivers on every front, solidifying its place in the premium headphone market.
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