Operating Manual - Pema Protea Equipped Media Amplier
Important Safety Instructions
Consignes de sécurité à lire attentivement
The lightning ash 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 sufcient magnitude
to constitute a risk of electric shock to persons. The exclamation point
within an equilateral triangle is intended to alert the user to the presence
of important operating and maintenance instructions in the literature accompanying the device.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. To reduce the risk of re or electric shock, do not expose this apparatus to rain or moisture.
6. Do not use this apparatus near water.
7. Clean only with dry cloth.
8. Do not block any ventilation openings. Install in accordance with the
manufacturer’s instructions.
9. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus.
10. Do not defeat the safety purpose of the polarized or grounding-type
plug. A polarized plug has two blades with one wider than the other. A
grounding type plug has two blades and a third grounding prong. The
wide blade or the third prong are provided for your safety. If the provided
plug does not t into your outlet, consult an electrician for replacement
of the obsolete outlet.
11. Protect the power cord from being walked on or pinched particularly
at plugs, convenience receptacles, and the point where they exit from
the apparatus.
12. Only use attachments/accessories specied by the manufacturer.
13. Use only with the cart, stand, tripod, bracket, or table specied by
the manufacturer, or sold with the apparatus. When a cart is used, use
caution when moving the cart/apparatus combination to avoid injury
from tip-over.
14. Unplug this apparatus during lightning storms or when unused for
long periods of time.
15. Refer all servicing to qualied 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.
Le symbole de la èche dans un triangle équilateral symbolisant la foudre
est prévu pour sensibiliser l’utilisateur à la présence de tension de voltage
non isolée à l’intérieur de l’appareil. Elle pourrait constituer un danger de
risque de décharge électrique pour les utilisateurs. Le point d’exclamation
dans le triangle équilatérale alerte l’utilisateur de la présence de consignes
qu’il doit d’abord consulter avant d’utiliser l’appareil.
1. Lisez ces instructions.
2. Conservez ces instructions.
3. Observez les avertissements.
4. Suivez ces instructions.
5. Pour réduire le risque de feu ou la décharge électrique, ne pas
exposer cet appareil pour pleuvoir ou l'humidité.
6. Ne pas utiliser l’appareil près de l’eau.
7. Le nettoyer à l’aide d’un tissus sec.
8. Ne pas bloquer les ouvertures de ventilation, installer selon les
consignes du fabricant.
9. Eloigner des sources de chaleur tel: radiateurs, fourneaux ou autres
appareils qui produisent de la chaleur.
10. Ne pas modier ou amputer le système de la mise à terre. Une prise
avec mise à terre comprend deux lames dont une plus large ainsi qu’une
mise à terre: ne pas la couper ou la modier. Si la prise murale n’accepte
pas la che, consulter un électricien pour qu’il remplace la prise désuète.
11. Protéger le cordon de secteur contre tous bris ou pincement qui
pourraient l’endommager, soit à la che murale ou à l’appareil.
12. N’employer que les accessoires recommandés par le fabricant.
13. N’utiliser qu’avec les systèmes de xation,chariots, trépied ou
autres, approuvés par le fabricant ou vendus avec l’appareil.
14. Débrancher l’appareil lors des orages électriques ou si inutilisé
pendant une longue période de temps.
15. Un entretient effectué par un centre de service accrédité est exigé
si l’appareil a été endommagé de quelque façon: si il a été exposé à la
pluie,, l’humidité ou s’il ne fonctionne pas normalement ou qu’il a été
échappé.
FCC Compliance
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference
2. 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 both a commercial and 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 off 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 a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help..
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Operating Manual - Pema Protea Equipped Media Amplier
Operating Manual - Pema Protea Equipped Media Amplier
1. INTRODUCTION
Thank you for your purchase of this Pema™ series Protea™ Equipped Media Amplier. This single audio solution combines
state of the art, light weight, high efciency switching amplier technology, integrated Ethernet control, comprehensive Protea
DSP processing and matrix mixing, optional Dante® or CobraNet® network audio, and remote control options. Please read this
entire manual to fully understand the features and capabilities of this product.
Standard Pema Features:
• 8x8 DSP Matrix with 4 or 8 channel power ampliers
• 250W/channel and 125W/channel models
• Low impedance (low-Z) output or separate 25V, 70V, and 100V constant voltage output models available
•CobraNet or Dante available as a factory installed option
• Eight analog inputs use +4dBu balanced Euroblock and -10dBV unbalanced summed mono RCA connectors
• Mic preamps with switchable +15V phantom power on all Mic/Line inputs
• Proteane software with comprehensive DSP tool set, matrix router/mixer, metering, event scheduler and event log
•
DSP tools include auto-mixer, ambient noise compensation, FIR lter, feedback suppressor, autoleveler, and much more
• Balanced, post DSP analog preamp outputs for every amplier output channel
• Compatible with Ashly network and serial data remote controllers, plus Ashly Remote app for iPad
• Passive remote control options include remote standby, contact closure preset recall, and remote DC level control
• Front panel attenuators and metering
• Five year warranty
®
About Ashly
Ashly Audio was founded in 1974 by a group of recording engineers, concert sound professionals, and electronics designers.
The rst products were elaborate custom consoles for friends and associates, but business quickly spread to new clients and
the business grew. The philosophy we established from the very beginning holds true today: to offer only the highest quality
audio tools at an affordable cost to the professional user – ensuring reliability and long life. Many years later, Ashly remains
committed to these principles.
Unpacking
As a part of our system of quality control, every Ashly product is carefully inspected before leaving the factory to ensure awless appearance. After unpacking, please inspect for any physical damage. Save the shipping carton and all packing materials,
as they were carefully designed to reduce to a minimum the possibility of transportation damage should the unit again require
packing and shipping. In the event that damage has occurred, immediately notify your dealer so that a written claim to cover
the damages can be initiated.
The right to any claim against a public carrier can be forfeited if the carrier is not notied promptly and if the shipping carton
and packing materials are not available for inspection by the carrier. Save all packing materials until the claim has been settled.
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Operating Manual - Pema Protea Equipped Media Amplier
2. PEMA AMPLIFIER MODELS
2.1 Product Overview
The Pema series of ampliers are available in the following 120VAC or 230VAC mains congurations. In addition to the standard
four Low Z models for regular speaker loads, Hi Z models are available in *25V, 70V, and 100V output versions. Also, each
model can have optional factory installed CobraNet or Dante network audio.
Pema 4125 - Eight input, four *125W amp channels
Pema 8125 - Eight input, eight *125W amp channels
Pema 4250 - Eight input, four 250W amp channels
Pema 8250 - Eight input, eight 250W amp channels
*The standard low Z 125W models also double as the 125W 25V constant voltage output version.
2.2 Installation Requirements
Each Pema model is 2RU, and weighs <26 pounds (11.8kg). The model number, mains voltage, and power consumption are
indicated on the back panel beneath the AC inlet.
Caution: Before mounting or wiring the unit, always disconnect it from the mains. Use four screws when mounting the ampli-
er to the front rack rails. Rear support is also recommended, especially for mobile or touring use. Air ow vents for cooling the
amplier require the front panel to have access to ambient room temperature air. Cool air is drawn in from the sides and blown
out the front. It is not necessary to leave a space above or below the amplier in the rack. To reduce the risk of re or electric
shock, do not expose this apparatus to rain or moisture. Before connecting to mains power, make sure that the controls, software,
and wiring are all set to the conguration needed for your particular application. Failure to do so could result in damage to the
unit or other components in the system.
Wiring: Always use high quality shielded cable for input signals, and use balanced input signal when possible. To avoid pos-
sible system noise or oscillation, avoid running low level signal wires parallel to speaker outputs or AC wiring, especially over
long distance. Before testing the system, double check all connections and settings. Refer to the specications section of this
manual for input, output, Ethernet, and other amplier properties to consider during installation.
2.3 Ethernet Communications Requirements
Ethernet communications with this amplier is made by connecting it directly to a PC running Proteane control software, or
connecting it to a networked PC through an Ethernet router, switch, hub, or patch panel. Networks using the Cat-5, Cat-5e, and
Cat-6 standard will all work with Pema ampliers. Maximum cable distance is 100 meters (328 ft) from the nearest router, hub,
or switch. Ashly network ampliers and remotes will auto detect their Ethernet connection, and adapt to either a straight through
pin to pin or crossover Ethernet cable.
2.3a IP Address - There is no need to assign IP addresses to Pema products used with a PC or a network router. The router or
Link Local Addressing will assign IP addresses to each product automatically.
When a router is not available, most current Pema and NE products have the capability to assign their own IP address based on
Link Local Addressing. This allows the device to operate without the need to set up static IP address. If the only option is to use
an Ethernet switch instead of a router, and communications problems remain which cannot be solved with the use of the link
local standard, each Pema device must have a static IP address assigned from within Proteane software. This is done by select-
ing “Manual Conguration” in the Network Properties tab of each device, where the system/network administrator must assign
each product its’ own unique static IP address, each with the appropriate sub net if applicable.
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Operating Manual - Pema Protea Equipped Media Amplier
2.3b Firewalls - If Proteane software does not detect the amplier or show real time changes, the rewall in the host PC may
need to have Proteane software added to its rewall exceptions, since rewalls may block the amplier response to the PC. The
current PC rewall status is found by clicking on the Windows Start button, then Control Panel, then double clicking on the
security shield where rewall exceptions are congured.
2.3c Wi-Fi and LAN – For the initial device auto-conguration process, any secondary Wi-Fi connection should be disabled on
the PC, and the LAN (Local Area Network) connection must be enabled on the PC. Secondary network connections may confuse
the auto device discovery process. Go to the Windows Control Panel, then Network Connections, to disable any secondary network connections. Once communications with the device is established, secondary network connections can be enabled again.
2.3d Connecting Device(s) - Connect the Ethernet cable from the PC or network to the amplier. If a successful Ethernet
connection has been made, a solid green LED (Link) lights up on the amplier's RJ-45 Ethernet port. If there is no green LED
showing, there is either a problem with the cable or the network source which must be addressed before proceeding further. All
RJ-45 Ethernet ports ash green when active, so backtrack through any other cables, routers, or switches to nd the problem.
The ashing yellow LED (Data) indicates that data is owing to or from the amplier.
2.4 Front Panel Features
1. Mounting Holes – For rack mounting.
2. Power Switch – Switches the unit on or off. Note: The power switch can be disabled from Protea
3. Status LEDs – Indicate status of: Power, Standby, Protect, Power Switch Disable, and Com activity.
4. Cooling Vents – Cool air enters the sides and is vented out through the front.
5. Channel Controls – Channel control area.
6. Signal LEDs – The lowest LED will begin to light when the output voltage reaches -18dBu below rated output. The Clip
LEDs will begin to ash when output voltage is 1/2 volt below the output power supply voltage, or the front end is clipped.
7. Bridge – This LED indicates that the channel pair is selected to BRIDGE mode from within Protea
the odd input channel level control is active.
8. Temp and Current LEDs – The Temp LED indicates that the amplier channel has reached an excessively high operating
temperature and will gradually attenuate the signal to compensate. If unable to sufciently cool the channel, the amplier will
eventually go into protect mode. The Current LED conrms that the amplier output is delivered to a speaker load.
9. Channel Attenuators – These control the input signal level to the amp, and can be disabled from software.
10. Factory Reset – To reset all internal congurations (including presets and passwords) back to the original factory settings,
press and hold this recessed front panel momentary switch during power up until all channel LEDs sequence from bottom to
top. Upon reset completion, the LEDs will turn off and the amp will be in normal operating mode.
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Software.
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software, and that only
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Operating Manual - Pema Protea Equipped Media Amplier
2.5 Rear Panel Features
1. Ethernet Port - This RJ-45 connector allows Ethernet control and monitoring of the amplier using Protea
2. Phantom Power Switch - This switch applies +15V phantom power to channel 1-4 balanced inputs. A separate switch is
used for channels 5-8.
3. TEL-PBX Switch - This switches between Mic/Line and PBX analog input for channel one only. When switched to TEL-
PBX, a 600 Ohm isolation transformer is inserted into the channel one input signal path. This transformer is designed for limited
bandwidth audio from a telephone paging system.
4. Balanced Mic/Line Input - This is used for a three wire (G, +, -) balanced analog input, and uses Euroblock connectors. If
an unbalanced input signal is to be connected here, wire the signal to (+), the input ground to (G), and connect (-) to (G).
5. Unbalanced Summed Mono Input - This pair of RCA jacks is used for analog line level (-10dBv) input, and sums a stereo
signal together for that input. Note: Unbalanced line level sources may reference their outputs to a different ground than the
Pema amplier, creating the potential for ground loop hum. Always use short cable lengths for unbalanced signals, routed away
from AC, video, or data cables, and make every effort to use a common grounding point for all devices. In the event there is
still ground loop hum, isolate the unbalanced input signal by using an in-line isolation transformer.
6. Digital I/O Slot – Installation of this option allows this amplier to be part of a CobraNet or Dante digital audio network.
7. Preamp Outputs - These Euroblock connectors provide access to post-DSP preamp signals for each channel, and are used
to drive other ampliers or processors with the same signal that is driving the power amplier. The preamp outputs are pseudobalanced, meaning they use single ended signal with balanced impedance, and can be wire balanced or unbalanced.
8. AUX Outputs - On four channel ampliers only, the four AUX outputs offer additional and independent post-DSP signals
for driving other ampliers or processors. AUX outputs are pseudo-balanced.
9. Euroblock Speaker Connectors - Used to connect to speakers or to distributed line transformers, depending on model.
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software.
10. Remote Standby - These two contact closure pins are wired to a switch to remotely place the amp in standby.
11. Preset Recall - These four pins (using remote standby GND) can be wired to remote contact closure switches to recall one
of the rst four amplier stored presets. Preset recall function is dened within Protea
12. Data - These four pins offer serial data control and can be wired to Ashly remote control devices such as the WR-5 or RD8C. Ashly also offers an in-line converter called the INA-1 that allows the Data port to be used with RS-232 controllers.
13. Remote Level Control - These pins can be wired to remote 10k Ohm potentiometers such as the Ashly WR-1 for DC level
control of individual channels.
14. AC Inlet - Used for the detachable AC cord. Use only the Ashly Audio factory supplied AC cord.
15. Model Information - This sticker tells the model name, mains voltage, and mains power/current consumption.
WARNING: Do not remove or lift the mains connector ground.
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software.
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Operating Manual - Pema Protea Equipped Media Amplier
2.6 Amplier Protection
Ashly Pema ampliers have the following protection circuits:
Over Current Protection - When the output current exceeds the amplier's safe operating limits. This occurs in the amplier
output stage.
Thermal Protection - The amplier senses output device temperature and adjusts a two-speed fan to keep the operating temperature within acceptable limits. If device temperatures exceed that limit, the input to that channel is rst reduced, and as a last
resort the power supply will be switched off while the fan continues to run.
Mains Protection – Protection within the power supply includes: In-rush Current Limitation during power up, Mains Over
Voltage Detection, and internal Mains Fuse Protection. To protect the Mains fuse against AC overcurrent due to excessive audio
output current, there is a protection scheme indicated on the amplier front panel and in Proteane software which reduces audio
output level until the overcurrent condition is no longer present.
DC Output Protection – If the amplier senses DC on an output it will shut down the power supply.
3. PROTEAne CONTROL SOFTWARE
3.1 Installing Software
Ashly Proteane software is included on a CD with each unit. Software updates may become available on the Ashly web site.
Autorun will launch the application <ProteaSystemSoftwareNE> to install the software.
Proteane Software Main Menu, Network Device Tree, and Project Canvas
Once the software has been installed on the computer and Ethernet connections with the amplier have been made, launch the
software. All available Ashly network enabled devices will be automatically detected and displayed in the Ashly Network device
tree on the left side of the main software startup window.
Device icons can be dragged onto the project canvas from the device tree, or placed as virtual devices in “Design Mode”. In
other words, a device icon on the canvas is not necessarily a live product. It may be a virtual device, or a device that is currently
off-line. In the device tree, all currently connected and active devices are highlighted in green. Ashly devices which have been
previously installed but are currently off-line or unavailable are highlighted in red. Individual devices can be dragged onto the
project canvas to simulate physical rack installation groups. Editing a device can be done from the device tree or an icon on the
canvas. All changes made in software are executed in real time on the device.
The software scans for active devices on start-up. The user can manually scan at any time as well with <Scan For Devices> at
the bottom of the network device tree. All devices broadcast their availability to the software when they start up.
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Operating Manual - Pema Protea Equipped Media Amplier
In addition to detecting which models are currently online, any factory installed options within each amplier are detected. Dante
or CobraNet are the only options available for Pema. The software control surface for each device automatically displays available controls for installed options. Note: The user can nd and verify a single physical device on the network by right clicking
over the unit’s name in the drop down menu or picture on the canvas, and then click <Identify>, which will ash the Com LED
on that unit’s face panel for two seconds.
The project canvas is used to visually represent a sound system installation, and can display any of the networked Ashly processors, ampliers, and remotes used in that system. The user can also place an assortment of isolated control objects such as
level faders, single LEDs, meter bars, etc, and map them to specic device functions within that project. Once a control object
is placed using <Add Items>, right click on the control object to bring up its properties. Lines, rectangles, text, even image
les can be added to create a custom virtual control screen along with individual devices and control objects and be saved in
the project. To see all available canvas tools, right click anywhere over open canvas. Checking <Design Mode> allows placed
objects to be moved around, while unchecking <Design Mode> locks all objects in place.
Once Proteane software is installed and devices identied on the network, a new project can be created and saved. A project le
represents the physical hardware installation via canvas items plus all device settings. Individual properties are edited in the
control surface window (shown below) by double clicking on the specic Pema amplier.
Pema 8250 Main Control Surface
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