Bose E4 manual To add a subzone, Input gain circuit block diagram, To delete a subzone

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6.0 E4 System Setup

Programmer’s Note: If you are using the E4 system to drive speakers that are not Bose® products, choose the No EQ setting or one of the four high-pass filter settings at the end of the list.

The No EQ setting helps protect the E4 against loudspeaker trans- former saturation when non-Bose loudspeakers are connected to the E4 hardware. This setting acts as a band pass filter and allows energy between 80 Hz and 16 kHz to be sent to the amplifier sec- tion of the E4 electronics.

If you change the speaker EQ type, any subzones will be automati- cally changed to the new Speaker EQ setting, and be given the default loudspeaker tap. Depending on the quantity and tap of speakers, you could receive an error message notifying you that the system exceeds the 400 W limitation of the E4 system. If this prob- lem occurs, delete the subzones from the subzone list. This will allow you to change the speaker EQ type.

Subzones table – The Subzones table allows you to document the speakers used in a zone.

A zone is a group of speakers that are driven by the same ampli- fier output channel. A subzone is a group of speakers within a zone that use a common tap or are of a common type.

For example, you may have installed ten Model 16 speakers in a dining room and set it up as a zone to be driven by channel 1. In this zone you may have established two subzones, one with five Model 16 speakers tapped at 8W and the other with five tapped at 16W.

To add a subzone

Click the Add button. When the Add Subzone window appears, enter a name for the new subzone, select the speaker model installed, enter the quantity, and select a tap setting. The Model Name list will include only speakers that are compatible with the Speaker EQ you selected.

Click OK to add the selections to the subzone table.

6.3.3 Input gain

The Input Gain controls allow you to adjust functions related to the input source signal.

Source type

Gain

Input signal

slider

level meter

®

Mic phantom

Signal

Opti-source

power On/Off

present

input leveling

 

indicator

On/Off

Factory default settings

Input Type

Initial Gain

Gain Range

Opti-source

 

 

 

 

Mic

40 dB

80 dB

Off

Line

0 dB

70 dB

Off

Mic Page

40 dB

80 dB

On

Line Page

0 dB

60 dB

On

 

 

 

 

Programmer’s Note: Input gain controls are disabled if the input channel is routed to a zone in which Auto Vol- ume is enabled (on). You will only be able to change/ adjust the input gain by resetting the Auto Volume for the affected zone.

Input gain circuit block diagram

Gain

Signal

3-band

Opti-source

adjustment

level

equalizer*

leveling

 

meter

 

 

To delete a subzone

In the subzones table, select the subzone to be removed and click the Delete button.

EQ SRC

LEVEL

Signal detector

*Only available for MIC/LINE and MIC/PAGE/LINE inputs. See “Source EQ” on page 50.

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Contents FreeSpace E4 Series II Business Music System Contents Contents Connecting to the E4 system Installing the softwareSet the E4 rear panel Power switch to on Power switchLaunch the FreeSpace Installer software Sample design files No hardware detectedIncompatible microcontroller code Installer software user interface Service Hardware Selects the Service Hardware mode Mode buttonsTool box Window sizing toolsHardware pane Set Up Hardware modeSet Up Schedule mode Adding events Setting the clockAdds a zone Auto Volume event Viewing and changing event settingsRemoving events from the list Adds a zone Source Change eventService Hardware mode Introduction Connecting your PC to an E4 systemFactory default settings System setup procedureOutput gain circuit block diagram Output gain setup sequenceOutput gain controls Zone setupGain Setup Input gain Input gain circuit block diagramTo add a subzone To delete a subzoneInput Line Input Types Selection Initial Gain Input gain setup sequenceInput gain controls To assign a source to a zone Source assignTo unassign a source To route a source to a zoneSource EQ SetupSetting up Multi-zone paging Setup with Opti-voiceoffSetup controls Zone EQ operation Zone EQPaging operation Auto Volume calibration button Auto VolumeAuto Volume Auto Volume Tracking Off Dynamic EQSense E4 System Important Before you calibrate Auto VolumeAuto Volume setup procedure E4 System Setup E4 System Setup Click to reset Auto Volume calibration Resetting a calibrated Auto Volume zoneAuto Volume controls When to repeat the Auto Volume calibrationAuto Volume operation Changing Auto Volume Tracking after calibrating a zoneTurning the system on Enabling keypad operationStandard user interface operation Standard User InterfaceAuto Volume User Interface Example Auto Volume user interface operationAuto Volume User Interface 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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