Genelec 7050CPM User Manual

7000 Series

Operating Manual Käyttöohje

Genelec 7050C Active Subwoofer

General Description

The Genelec 7050C active subwoofer is a very compact low frequency loudspeaker, designed to extend the bass reproduction of Genelec active loudspeakers in stereo or surround applications. Adding the 7050C to the system creates a compact

neareld monitoring system capable of a at

frequency response down to 24 Hz (-6 dB).

Driver

The 7050C contains a single 205 mm (8 in) magnetically shielded low frequency driver, housed in a Genelec Laminar Spiral EnclosureTM (LSETM) bass reex cabinet.

Bass Management Unit

The built-in bass management unit has

ve signal input and output channels and a

discrete LFE signal input.

The active crossover contained in the bass management unit splits the input signals into low and high frequency components at 85 Hz. Frequencies below 85 Hz are directed to the subwoofer and frequencies above 85 Hz to the main speakers.

The low pass section sensitivity can be adjusted from +12 dBu to -6 dBu to allow easy subwoofer level matching with various main speakers. All outputs have 0 dB passband gain.

The input sensitivity of the LFE channel can be set to 0 dB or +10 dB.

Balanced XLR connectors are used for the system audio inputs and outputs.

Two "Bass Roll-Off" switches are included to provide a flat bass response in all acoustical environments, enabling adjustments of the subwoofer response

in three -4 dB steps. Two phase matching switches in the crossover allow compensation for the delay which occurs if the subwoofer is placed away from the main speakers, or for other speaker systems phase behaviour. Four settings are provided between 0° and -270°.

ISSTM Autostart

The automatic power saving function ISS (Intelligent Signal Sensing) can be activated by setting the “ISS” switch on the connector panel to “ON.” Automatic powering down to standby mode happens after a certain time when playback has ended. The power consumption in standby mode is typically less than 0.5 watts. Playback will automatically resume once an input signal is detected from the source.

There is a slight delay in the automatic powering up. If this is undesirable, the ISS function can be disabled by setting the “ISS” switch on the connector panel to “OFF.” In this mode, the subwoofer is powered on and

o using the power switch on the connector

panel.

The “ISS SENSITIVITY LOW” switch lowers the triggering sensitivity of the ISS function. This can be necessary if the subwoofer “wakes up” even if there is no audio signal.

Amplifier

The amplifier produces 130 W of output power, with very low THD and IM distortion. Driver overload protection and power-on signal muting is included in the amplifier circuitry. The amplifier also incorporates thermal overload and short circuit protection.

Installation

The subwoofer is supplied with a mains cable and this operating manual. Once unpacked inspect the subwoofer to ensure that it has not been damaged in transport. If the subwoofer is brought in from a cold strorage or transport, let it warm completely to the room temperature before making any connections. Ensure that both the subwoofer

and the main loudspeakers are switched o

before making any connections.

Audio connections are made with

balanced XLR cables. The 7050C has IN/

OUT connector pairs for ve main channels

and a dedicated LFE input connector for the LFE channel. Connect the signal cables from your source to the female XLR "IN" connectors on the upper connector row. Next connect XLR cables from the corresponding "OUT" male XLR connectors on the lower row to the input connectors of each main loudspeaker.

Use the "LFE IN" connector for the LFE or .1 output channel of a 5.1-channel discrete surround sound source.

Once all connections have been made, the subwoofer and main loudspeakers are ready to be powered up.

Positioning In The Room

The placement of the subwoofer in the room affects the overall frequency response and sound level of the system dramatically, as at low frequencies the effects of the room are strong. Even a slight change in the subwoofer's location can make a marked difference in the frequency balance and often patient and methodical experimentation and testing

LFE IN CONNECTOR

BYPASS SWITCH CONNECTOR

SERIAL

CONNECTORS

INPUT

7050C ACTIVE SUBWOOFER

NUMBER

www.genelec.com MADEIN FINLAND

IN 1IN2 IN 3

IN 4IN5

OUT

OUTPUT

OUT1 OUT2 OUT 3 OUT4 OUT 5

CONNECTORS

SENSITIVITY

ADJUSTMENT

Figure 1. 7050C's amplier panel, connectors and controls.

LINE LEVEL SIGNALSOURCE

WARNING

ELECTRICSHOCKHAZARD. DONOTOPEN.DONOT SUBJECTTOWATEROR MOISTURE.NOUSER SERVICEABLEPARTSINSIDE.REFERSERVICING TOQUALIFIEDPERSONNEL. USEEARTHED MAINS CONNECTIONONLY.

AVERTISSEMENT

RISQUEDECHOC ÉLECTRIQUE.NEPASOUVRIR.NE PASEXPOSERÀL'EAUOU L'HUMIDITÉ.AUCUN COMPOSANTÀL'INTÉRIEURREMPLAÇABLEPARL'UTILISATEUR.ADRESSER TOUTERÉPARATIONÀ UNPERSONNELQUALIFIÉ. CETAPPAREILDOITÊTRERACCORDÉÀLATERRE.

BYPASS

LFEIN

ROLL-OFF PHASE

-270°

-8dB

-90°

-4dB

-180°

-3

-4

+12

-6

THISDEVICECOMPLIESWITHFCC PART15AND

ISS ISSSENSITVITYLOW LFE+10dB

CANADIANICES-003RADIO FREQUENCYCLASSB EMISSIONREQUIREMENTS.REFER TOOPERATING MANUALFORFULLINFORMATION.

INPUTdBu PRODUCING

100dB SPL(1m)

LAITEONLIITETTÄVÄ SUOJAKOSKETTIMILLA VARUSTETTUUNPISTORASIAAN. APPARATETMÅTILKOPLES JORDETSTIKKONTAKT. APPARATENSKALLANSLUTAS TILLJORDATUTTAG.

MAINSINPUT

50/60Hz 150W

100-240V~

ALLOFF

-2

-4

-6

BASS ROLL-OFF

MAINSINPUT 50/60Hz60W

ThisdevicecomplieswithFCCPart15andCanadian ICES-003radiofrequencyClassBemissionrequirements. Refertooperatingmanualforfullinformation.

100-240V~

DESKTOP

16020 20k

Frequency(Hz)

WARNING:ELECTRICSHOCKHAZARD.DONOTOPEN.DONOT SUBJECTTOWATERORMOISTURE.NOUSERSERVICEABLE PARTSINSIDE.REFERSERVICINGTOQUALIFIEDPERSONNEL. USEEARTHEDMAINSCONNECTIONONLY. AVERTISSEMENT:RISQUEDECHOCÉLECTRIQUE.NEPAS OUVRIR.NEPASEXPOSERÀL'EAUOUL'HUMIDITÉ.AUCUN COMPOSANTÀL'INTÉRIEURREMPLAÇABLEPARL'UTILISATEUR. ADRESSERTOUTERÉPARATIONÀUNPERSONNELQUALIFIÉ. CETAPPAREILDOITÊTRERACCORDÉÀLATERRE. LAITEONLIITETTÄVÄSUOJAKOSKETTIMILLAVARUSTETTUUN PISTORASIAAN. APPARATETMÅTILKOPLESJORDETSTIKKONTAKT. APPARATENSKALLANSLUTASTILLJORDATUTTAG.

BASS TILT

TREBLE TILT

8030CBI-AMPLIFIED MONITORINGSYSTEM

MADEINFINLAND

SERIALNUMBER

SERIAL NUMBER

7050CACTIVE SUBWOOFER

292-8030W

ON OFF

-6 +6

ISS

-3

-2dB

-4dB

INPUTdBu PRODUCING

100dBSPL(1m)

TREBLETILT-2dB

BASSTILT

BASSROLL-OFF-4dB

DESKTOP160Hz-4dB

ANALOG

231

www.genelec.com

GND

292-8030CT

IN1IN2 IN3

OUT

OUT1 OUT2 OUT 3 OUT 4 OUT 5

www.genelec.com MADEINFINLAND

IN4IN5

-270°

-90°

-180°

ISS ISSSENSITVITY LOW LFE+10 dB

WARNING

AVERTISSEMENT

BYPASS

THISDEVICE COMPLIESWITHFCC PART15 AND CANADIANICES-003 RADIO FREQUENCYCLASS B EMISSIONREQUIREMENTS. REFER TOOPERATING MANUALFORFULLINFORMATION.

LAITEONLIITETTÄVÄ SUOJAKOSKETTIMILLA VARUSTETTUUNPISTORASIAAN. APPARATETMÅ TILKOPLES JORDETSTIKKONTAKT. APPARATENSKALL ANSLUTAS TILLJORDAT UTTAG.

ELECTRICSHOCK HAZARD. DONOTOPEN.DO NOTSUBJECT TO WATEROR MOISTURE.NO USER SERVICEABLEPA RTSINSIDE. REFERSERVICING TOQUALIFIED PERSONNEL. USE EARTHEDMAINS CONNECTIONONLY.

RISQUEDE CHOC ÉLECTRIQUE.NE PASOUVRIR.NE PASEXPOSER ÀL'EAUOU L'HUMIDITÉ.AUCUN COMPOSANTÀL'INTÉRIEURREMPLAÇABLEPARL'UTILISATEUR. ADRESSERTOUTE RÉPARATIONÀ UNPERSONNEL QUALIFIÉ. CETAPPAREILDOITÊTRE RACCORDÉÀLATERRE.

LFE IN

ROLL-OFF PHASE

-8dB

-4dB

-3

-4

+12

-6

INPUTdBu

PRODUCING

100 dBSPL (1 m)

BASS ROLL-OFF, ISS AND LFE +10 dB

292-8030W

APPARATENSKALLANSLUTASTILLJORDATUTTAG.

ON OFF

-6 +6

ALLOFF

-2

ISS

-3

BASS

-4

-2dB

-4dB

TILT

TREBLE

-6

TILT

DESKTOP

BASS

INPUTdBu

ROLL-OFF

PRODUCING

16020 20k

100dBSPL(1m)

Frequency(Hz)

TREBLETILT-2dB

BASSTILT

BASSROLL-OFF-4dB

DESKTOP160Hz-4dB

MAINSINPUT

ANALOG

8030CBI-AMPLIFIED

50/60Hz60W

100-240V~

MONITORINGSYSTEM

231

www.genelec.com

MADEINFINLAND

SERIALNUMBER

GND

ThisdevicecomplieswithFCCPart15andCanadian ICES-003radiofrequencyClassBemissionrequirements.

292-8030CT

Refertooperatingmanualforfullinformation.

MAINS INPUT

50/60Hz 150 W

100-240 V~

MAINS SWITCH

MAINS CONNECT

PHASE,

SWITCHES

Figure 2. Audio cable routing example with a two channel source shown.

is needed to nd the optimum placement.

The placement will affect the phase

dierence between the main loudspeakers

frequencies and may cause asymmetrical spatial imaging.

and the subwoofer and the bass roll-o

rate.

First place the subwoofer slightly oset

from the center of the front wall. The recommended distance to the wall is less than 60 cm / 24" measured from the subwoofer's driver. This position gives increased acoustic loading (and SPL) due

to the proximity of the front wall and oor.

Cancellations from the front wall and oor

are also avoided. Front wall cancellation for

the 85 Hz high pass ltered main speakers

can be eliminated by placing them at least 110 cm / 43" away from the front wall (see Figure 3).

If the frequency balance does not seem

Minimum Clearances To Walls

Or Other Objects

Do not cover the driver side of the subwoofer or place the subwoofer so that there is less than 10 cm (4") of free space in front of the grille.

Make sure that the space underneath the subwoofer is clear from obstructions. Thick carpets may block the ventilation clearance needed for cooling the electronics.

The reflex port side (opposite of the connector panel side) should always have a clearance of at least 7.5 centimeters (3") to any objects to ensure proper functioning of

the reex port.

right, try moving the subwoofer slightly

to the left or right so that dierent room

modes are excited at different levels. Positioning the subwoofer close to a corner will boost the bass level at lower

Flush Mounting The

Subwoofer

If the subwoofer is flush mounted into a wall or a cabinet, it is important to ensure

Figure 3. Recommended distances to

the front wall

Figure 4. Examples of subwoofer posi-

tioning. 1 and 2 are good starting posi-

tions for a single subwoofer and also

work well with two linked subwoofers.

Position 3 causes a signicant bass

boost and may cause asymmetric spa-

tial imaging if only one subwoofer is

used. Position 4 also works best with

two subwoofers. Flush mounting (pos.

5) generally works well.

Phase Difference: 0°

Phase Difference: 270°

Phase Difference: 90°

Subwoofer placement Bass Roll-Off

setting

Near to a wall -4 dB

In a corner -8 dB

Flush mounted -4 dB

Table 1. Suggested Bass Roll-O

settings

85 Hz

Phase Difference: 180°

85 Hz

Figure 5. The eect of phase dierence between the subwoofer and the main loud-

speakers

amplifier cooling and unrestricted airflow

from the reex port. This can be done by

making the recess 7.5 centimeters (3") wider than the subwoofer. Place the subwoofer into the right end of the recess with the driver side facing the room. This leaves

sucient 7.5 centimeters (3") of free space

on the reex port side. The height and depth

of the recess should not be any bigger than

is needed to t the subwoofer ush with the

wall surface.

Sensitivity Adjustment

The subwoofer requires input sensitivity alignment to the source to obtain a correctly balanced system. The input sensitivity control is located on the connector panel of the subwoofer. An input voltage of -6 dBu with a -6 dBu input sensitivity setting will produce 100 dB SPL

@ 1 m in free eld.

Setting The Phase Control

Incorrect phase alignment between the main loudspeakers and subwoofer causes a drop in the frequency response of the whole system at the crossover frequency.

The graphs above (Fig. 5) show the eect

of phase difference to the frequency response.

The phase dierence between the main

loudspeakers and subwoofer at the listening position is dependent upon the position of the subwoofer, so the phase adjustment should be done only after the preferred

85 Hz

position is found. Acoustic measuring equipment is required for accurate system alignment. If this equipment is not available, the following coarse phase matching can be applied.

Coarse Phase Adjustment

Method

Connect an audio frequency signal generator to one of the inputs of the 7050C and set it to feed a 85 Hz signal to the system. Alternatively, you can use a 85 Hz signal fom a suitable audio test recording. Make sure you connect (even temporarily) a main loudspeaker to the corresponding output on the subwoofer, so that the test signal is properly reproduced by both subwoofer and main loudspeaker.

Toggle the -180° phase switch (DIP 4 from left) "ON" and "OFF", and set it to the position which gives

the lowest sound level at the listening position.

Next toggle the -90° phase switch (DIP 3) "ON"

4321 765

gives the lowest sound level.

and "OFF", and again set it to the position which

Finally, set the -180° phase switch (DIP 4) to the opposite setting and deactivate the test signal.

Figure 6. Flush mounting the

subwoofer. Note the clearance needed

on the reex port side.

Phase Correction Method

With Test Equipment

The following procedure matches the phase between the subwoofer and the main loudspeakers using a frequency analyser and a pink noise generator. Connect a high grade measuring microphone to the analyser and feed pink noise into one of the inputs of the subwoofer. Position the microphone at the listening position and adjust the input sensitivity of the subwoofer until frequencies below and above 85 Hz are reproduced at equal level. Then adjust the phase control switches for the maximum dip of at least -6 dB at the crossover frequency (85 Hz).

Change the -180° switch to the opposite setting. The phase should now be set correctly and the frequency analyser should show a smooth response around 85 Hz.

Using The LFE +10 dB

Function

The LFE channel is usually recorded 10 dB lower than the main channels so that there is 10 dB of extra level (headroom) available.

Most AV processors automatically add 10 dB to the LFE channel to restore the level in the LFE channel but some medium format mixing consoles and many smaller consoles do not have the facility to apply the +10 dB gain to the LFE. To overcome this limitation Genelec subwoofers provide a +10 dB LFE gain selection.

The “LFE +10 dB” function should not be

dB SPL

used in the following cases:

• If the +10 dB LFE gain is already implemented by another device, for example, a surround sound processor or the output matrix of a mixing console.

• When producing an audio format that does not require the use of +10 dB gain on the LFE channel.

Bypass

The Bypass input accepts a 6.3 mm tip-ringsleeve (TRS) or tip-sleeve (TS) plug. This plug supports a contact open/close switch device. Connecting the TIP to the SLEEVE activates the bass management bypass. When the bass management bypass is active, the subwoofer only reproduces the LFE signal and the outputs bypassed to the monitors are exact copies of the inputs.

Safety Considerations

Genelec 7050C subwoofer has been designed in accordance with international safety standards. However, to ensure safe operation and maintain the unit in safe operating condition, the following warnings and cautions must be observed:

7050C

2 channel

system

8020 8030

M030

Room volume up to

75 m3 / 2647 ft

5 channel

system

8010 8020

Table 2. Recommended main speaker

models for the 7050C

Maintenance

No user serviceable parts are inside the subwoofer. Any maintenance of the unit

must only be performed by qualied service

personnel.

Guarantee

This product is supplied with a two year guarantee against manufacturing faults or defects that might alter the performance of the unit. Refer to supplier for full sales and guarantee terms.

Compliance to FCC Rules

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

Level vs Freq (Hz) 7050C 4.2.18

+100

+80

dB SPL +60

+40

+20

Bass Roll-Off

-4,-8 and

-12dB

LFE channel

Main channels

100

200

Figure 7. The free eld frequency

response of the 7050C subwoofer at

dierent Bass Roll-O settings

Harmonicdistortion 7050C 4.2.18

+100

+80

+60

Fundamental frequency

2nd harmonic

• Servicing and adjustment must only be

performed by qualied service

personnel. The subwoofer cabinet or electronics unit must not be opened.

• Do not use this subwoofer with an

unearthed mains cable or an unearthed mains connection as this may compromise electrical safety.

• Do not expose the subwoofer to water

or moisture. Do not place any objects lled with liquid, such as vases on the subwoofer or near it.

• This subwoofer is capable of producing

sound pressure levels in excess of 85 dB, which may cause permanent hearing damage.

• Free ow of air around the subwoofer is

necessary to maintain sucient cooling. Do not obstruct airow around the

subwoofer.

• Note that the subwoofer is not

completely disconnected from the AC mains service unless the mains power cord is removed from the subwoofer or the mains outlet.

Warning!

This subwoofer is capable of delivering sound pressure levels in excess of 85 dB, which may cause permanent hearing damage.

• This device may not cause harmful interference, and

• This device must accept any interference received, including interference that may cause undesired operation.

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment

o and on, the user is encouraged to try to

correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on

+40

+20

3rd harmonic

100

200

Figure 8. The curves above show the

harmonic distortion analysis of the

7050C in free eld. In half space the

SPL will be 6 dB higher.

a circuit dierent from that to which the

receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

Modications not expressly approved by the

manufacturer could void the user’s authority to operate the equipment under FCC rules.

+ 11 hidden pages

Genelec 7050CPM User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual