Cerasonar CS-500DSP4 User manual

cerasonar cs-500dsp4

4 channel DSP amplifier

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Important Safety Instructions

 Read these instructions

 Keep these instructions

 Heed all warnings

 Follow all instructions

 Do not use this apparatus near water

 Clean only with a dry cloth

 Do not block any ventilation openings. Install in accordance with the manufacturer’s

instructions

 Do not install near any heat sources such as radiators, heat registers, stoves, or other

apparatus (including amplifiers) that produce heat

 Protect the power cord from being walked on or pinched particularly at plugs,

convenience receptacles, and the point where they exit from the apparatus

 Only use attachments/accessories specified by the manufacturer

 Unplug this apparatus during lightning storms or when unused for long periods of time

 Refer all servicing to qualified service personnel. Servicing is required when the

apparatus has been damaged in any way, such as power-supply cord or plug is

damaged, liquid has been spilled or objects have fallen into the apparatus, the

apparatus has been exposed to rain or moisture, does not operate normally, or has

been dropped

 This apparatus shall not be exposed to dripping or splashing, and no object filled with

liquids, such as vases or glasses, shall be placed on the apparatus

Safety Symbols

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The lightning flash with arrowhead symbol within an equilateral

triangle is intended to alert the user to the presence of uninsulated

“dangerous voltage” within the product’s enclosure, that may be of

sufficient magnitude to constitute a risk of electric shock to person

The exclamation point within an equilateral triangle is intended to

alert the user of the presence of important operating and

maintenance (servicing) instructions in the literature accompanying

the appliance.

When Installing the Unit

 Never plug in nor remove the power supply plug with wet hands, as doing so may cause

electric shock.

 When unplugging the power supply cord, be sure to grasp the power supply plug;

never pull on the cord itself. Operating the unit with a damaged power supply cord

may cause a fire or electric shock.

 When moving the unit, be sure to remove its power supply cord from the wall outlet.

Moving the unit with the power cord connected to the outlet may cause damage to

the power cord, resulting in fire or electric shock. When removing the power cord, be

sure to hold its plug to pull.

 Avoid installing the unit in humid or dusty locations, in locations exposed to the direct

sunlight, near the heaters, or in locations generating sooty smoke or steam as doing

otherwise may result in fire or electric shock.

 To avoid electric shocks, be sure to unplug the unit's power supply cord when

connecting speakers.

 Be sure to follow the instructions below when rack-mounting the unit. Failure to do so

may cause a fire or personal injury.

o Install the equipment rack on a stable, hard floor. Fix it with anchor bolts or

take other arrangements to prevent it from falling down.

o When connecting the unit's power cord to an AC outlet, use the AC outlet with

current capacity allowable to the unit.

o No rack-mounting screws are supplied with the unit. Separately prepare the

appropriate screws for the rack.

 Make sure that the ventilation slots as well as the fan is not blocked by any objects

that may obstruct air flow to prevent that the unit overheats.

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Caution, to reduce the risk of electric shock, do not remove the

top cover. There are no user-serviceable parts inside. Refer

servicing to qualified personnel.

Recycling notice: If the time comes and this apparatus has

fulfilled its destiny, do not throw it out into the trash. It has to

be carefully recycled for the good of mankind, by a facility

specially equipped for the safe recycling of electronic

apparatus. Please contact your local or state recycling leaders

for assistance in locating a suitable nearby recycling facility. Or,

When the Unit is Installed

 Do not place heavy objects on the unit as this may cause it to fall or break which may

result in personal injury and/or property damage. In addition, the object itself may

fall off and cause injury and/or damage.

 Do not operate the unit for an extended period of time with the sound distorting. This

is an indication of a malfunction, which in turn can cause heat to generate and result

in a fire.

 If dust accumulates on the power supply plug or in the wall AC outlet, a fire may result.

Clean it periodically. In addition, insert the plug in the wall outlet securely. internal

temperature rise.

 Switch off the power, and unplug the power supply plug from the AC outlet for safety

purposes when cleaning or leaving the unit unused for 10 days or more. Doing

otherwise may cause a fire or electric shock.

Maintenance and Repair

 WARNING! Advanced technology, e.g., the use of modern materials and powerful

electronics, requires specially adapted maintenance and repair methods. To avoid a

danger of subsequent damage to the apparatus, injuries to persons and/or the

creation of additional safety hazards, all maintenance or repair work on the apparatus

should be performed only by a Cerasonar authorized service partner. Cerasonar is not

responsible for any injury, harm or related damages arising from any failure of the

customer, owner or user of the apparatus to facilitate those repairs.

Delivery Content

The cs-500dsp4 comes with the following content:

 Amplifier, cerasonar cs-500dsp4

 Removable terminal plug (4P), 2 pcs

 Removable terminal plug (5P), input adapter with RCA cable connected, 2 pcs

 IEC-type detachable power cord

 Installation manual

 Adapter rack ear for 19″ rack mounting (1x amplifier 1U)

 Adapter amp connector for 19″ rack mounting (1x amplifier 1U)

Save the carton and polystyrene inserts for future safe transport in case the amplifier is moved

or requires shipping for repair.

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Introduction

Thank you for purchasing the cerasonar cs-500dsp4 which is a 4-channel DSP amplifier that

convinces with its performance and compact dimensions. A preset can be selected for our

cerasonar loudspeakers to ensure optimal sound in any room. The digital overload protection

guarantees operational safety.

The power output is 125 watts per channel into 4 and 8 ohms, furthermore the amplifier can

also be used for 70/100V applications. There are 4 balanced inputs, the RCA adapters included

in the package can be used for up to two stereo RCA inputs. If the default standby automatic

is not desired, the amplifier can also be switched on and off by 12V trigger. Control via

Control4 is possible as well. The amplifier connects to the network via LAN and can be

configured locally from any internet browser, no additional PC software is necessary.

Adapters are included for installation in a 19″ rack. One or two amplifiers per 1U can be

installed. The amplifier is also suitable for stand-alone use, as it is passively cooled and does

not cause any disturbing noise. In the configuration interface the fine tuning of the

loudspeakers can be done (max. power limit, DSP filter, volume) and the input channels can

be assigned to the output channels via matrix.

Functions

(front panel view)

PROTECT/LIMIT LED

Each channel (A, B, C and D) has a protection/clip limiter LED. Whenever this red indicator

lights up, it implies that the internal protections have been triggered to protect the device

against damage. Should this protection turn on, please check if the amplifier is being

overdriven or if there is any short circuit in speaker cables.

Whenever this red indicator is blinking, it implies that the limiter starts clipping. The limiter

only responds to actual clipping, and automatically compensates for load and voltage

variations. Clip limiting is generally recommended, especially to protect high frequency

drivers. It illuminates red whenever the amplifier reaches the selected power limit.

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SIGNAL LED

Each channel has a signal LED. It illuminates green when a signal is present and beyond a

default input threshold level.

(back panel view)

FACTORY RESET

Please turn to page 14

IEC 4-PIN RECEPTACLE

The cs-500dsp4 amplifier has an auto-switch 115/230VAC power supply that operates on

mains from 100 - 240 V at 50Hz or 60 Hz. The IEC receptacle on the rear panel accepts the

supplied IEC cord which terminates in a connector plug appropriate for the country of sale.

CAUTION: This unit is a Class 1 device. Do not defeat the safety connector or use a power cord

without the safety ground pin.

AC FUSE & HOLDER

The main power supply fuse may be checked or replaced. Make sure that the power cord is

unplugged from the AC mains first. Then use a flat-headed screwdriver to undo the fuse carrier

from the fuse holder. Inspect the fuse and replace with the exact same type indicated on the

unit. The use of any other type of fuse may lead to an unsafe condition. If the fuse blows again

immediately, then unplug the power cord and contact the dealer for service. Do not open the

unit, as there are no user-serviceable parts inside, and dangerous voltages exist.

CAUTION: Only replace with the same type fuse.

BALANCED TERMINAL BLOCK INPUT A, B, C AND D

There are two five‑pin Euro-style connectors labeled CH1 through CH4 providing the audio

inputs to the amplifiers. A single input can be mixed to one or a combination of outputs. You

can use from one to four of the inputs. The inputs are 10 kΩ balanced or unbalanced.

a. Make sure your audio source devices are powered off.

b. The unit comes with two preinstalled RCA to euro style connectors, you can use these for

any RCA sources, e.g. Sonos Connect

c. If you want to build your own cable, follow these steps.

d. Connect the input source wires to the Euro-style connectors, where H(+), C(-), E(GND).

e. The inputs can be routed to different outputs. Be sure that the connections you make here

match the configuration of the amplifier.

f. Plug the Euro-style audio connectors into the appropriate inputs on the rear of the amplifier.

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INPUT LEVEL POTENTIOMETERS

Use these potentiometers to adjust the gain of input A, B, C and D, respectively.

SPEAKER OUTPUT A, B, C AND D OUTPUT

There are two sets of removable speaker wire terminals, one for two amplifier outs, either

amplifier A and B or amplifier C and D. The terminals accept speaker wires up to 14 AWG in

size. Each terminal has four screw-down connections for speaker wire: One positive (+) and

one negative (-) for each speaker. Unscrew the connection, insert the appropriate bare

speaker wire, then tighten firmly.

Warning: The negative (-) terminal is not Ground. Please do not short the negative (-)

terminals.

NETWORK CONTROL

An RJ45 jack is supplied for connection to an Ethernet network for external control and

monitoring, either by a direct wired connection or via an external WiFi access point. Any

device with a modern web browser can be used. LEDs below the connector indicate valid

network connection (LINK) and network activity (ACT). When several network devices are

connected to a network, a switch with a built-in DHCP server should be used. The cs-500dsp4

is set to DHCP mode on delivery, which means that the network router assigns an IP address

to the device. Please make sure that enough free IP addresses are available. With a suitable

network search/scanner tool you can find the amplifiers that are connected to your network.

If there is no DHCP service available, the IP address of the unit will be 192.168.14.1

After the amp is set up correctly and turned on, you can access the unit via a web browser.

Make sure that both units are connected to the same local network.

Step 1:

Type in the IP address of the amp (use a scanner tool if you don‘t know it), if the ip address

would be: 192.168.1.50, type in this address to your webbrowser:

http://192.168.1.50

Step 2:

Use the following login data to access the amps control panel:

user: “admin”

password: “admin”

Step 3:

You should now be able access the cerasonar cs-500dsp4 web GUI.

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WARNING!: When the AC power is on, there is a potential of having

dangerous voltage at the output terminals on the back of the

amplifier. Use caution not to touch these contacts. Turn off the AC

Mains disconnect switch prior to making any connections.

Web GUI Controls

START SECTION

The cerasonar cs-500dsp4 is easy and fast to configure due to the sleek and straightforward

GUI design. On the start page you have the input matrix to route the input signal(s) to the

desired output channel(s). In the mixer section, the output channel(s) volume can be adjusted

or the amp channel muted. The level meter shows the input signal/source strength and the

output signal strength, on the top bar the selected preset, the temperatures and the ip

address as well as the system uptime and protection are displayed.

WARNING: If you only want to use the basic functions, please go to the “PRESET SECTION” to

select the appropriate preset for the cerasonar speaker. If the amp is not correctly configured,

this may harm the speakers and/or lead to damage!

DSP SECTION

In this section, some basic DSP functions can be configured. First of all the HPF (highpass filter)

can be individually selected for all channels with the desired frequency. Please make sure to

turn it on by pressing on “HPF” (it will turn to yellowish). With the tone control, the treble and

bass level can be adjusted. The limiter can be used to limit the max. power output.

0 dB = full power, e.g. ~ 125 watts

- 3 dB = half power, e.g. ~ 62,5 watts

- 6 dB = quarter power, e.g. ~ 31,25 watts

- 9 dB = eighth power, e.g. ~ 15,625 watts

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EQ FILTER SECTION

If required, EQ filters can be used. Three filters are available per channel, the LPF and HPF are

each 12 dB per octave. With a suitable measurement system, the frequency response should

be measured at different points in the room. Afterwards, filters should only be set if a certain

tendency is visible on all measurements. We recommend checking the changes with a known

music song, for this purpose the filters can be switched on and off in real time.

WARNING: Only for qualified users, wrongly set filters can make the speakers sound badly

and might harm them!

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