XPA - Audio Amplifier Cyrus Audio - Free user manual and instructions

Brand	Cyrus Audio
Model	XPA
Product type	Stereo audio power amplifier
Output power	50W per channel into 8 ohms
Frequency response	3Hz - 75kHz (-3dB)
Signal-to-noise ratio	108dB (A-weighted, ref 50W)
Total harmonic distortion	0.005% at 1kHz; 0.05% over 20Hz - 20kHz at 2/3 full power
Input sensitivity	380mV for 50W into 8 ohms
Input impedance	10k ohms
Channel balance	0.1dB
Power consumption standby	12W
Power consumption on	185W at 2 x 60W per channel rated output
Mains voltage	220V - 240V (230V products) or 110V - 120V (115V products) as marked on rear panel
Mains fuse	UK/Europe 230V: T1A 20mm; North America/Far East 115V: T2A 20mm
Inputs	Stereo RCA phono left/right inputs
Speaker outputs	Left/right speaker terminals accepting BFA-type speaker plugs
Chain outputs	RCA chain output jacks for connecting additional XPAs in bi/tri-amplification
Standby control	Front-panel standby key with red/green status light and music sensing auto power on
Enclosure	Die cast chassis
Dimensions (WxHxD)	215 x 75 x 365mm
Weight	4.3kg
Safety standards	EN 60065
Ventilation	Install in a well ventilated location; do not block cabinet openings
Cleaning	Disconnect from mains and clean with a damp cloth only; do not use liquid or aerosol cleaners

Frequently Asked Questions - XPA Cyrus Audio

How do I connect the Cyrus XPA to the mains power supply?

Connect the IEC connector of the supplied AC cord to the power inlet on the rear panel, then plug into a suitable AC power point. The mains power switch can be left on for normal operation. Use the correct fuse: T1A 20mm for 230V UK/Europe, T2A 20mm for 115V North America/Far East.

How do I connect the XPA to a preamplifier?

Use a stereo phono interconnect from the preamplifier output to the left and right inputs on the rear panel. Respect colour coding to keep left and right channels correctly ordered.

How do I connect loudspeakers to the XPA?

Fit the included BFA speaker plugs to the cable observing polarity (+ and -) and any direction arrows toward the speaker. Connect the left speaker to sockets 6 (red) and 5 (black), and the right speaker to sockets 1 (red) and 2 (black).

Can I use two or more XPAs for bi-amplification?

Yes. The chain outputs allow multiple XPAs to be connected to a preamplifier. Connect the chain output of the first XPA to the inputs of the next XPA, then connect each amplifier separately to bass and treble units for the sonic benefits of bi/tri-amping.

What does the standby light color indicate?

The standby light shows red when the XPA is in standby and green when it is operational. Power can be controlled manually with the standby key or automatically by music sensing.

How does the music sensing automatic power control work?

The XPA listens for an input signal and switches on automatically when music begins to play. If activated this way, it automatically resets to standby five minutes after the music stops.

What should I check if there is no sound from either speaker?

First check whether the preamplifier mute switch is on and deselect it if needed. Then verify the loudspeaker connections are secure. If problems persist, consult your dealer.

What should I check if sound is missing from only one loudspeaker?

Check whether the speaker has fuses and replace them if necessary. Inspect speaker cables and interconnects for faults and replace faulty cables. Verify the speaker plugs are connected to the correct terminals.

What speaker plugs are required for the XPA?

Use the supplied speaker plugs or correct BFA type plugs if replacements are needed. Ensure polarity indicators (+ and -) are observed on the loudspeaker cable.

What are the main specifications of the Cyrus XPA?

The XPA delivers 50W per channel into 8 ohms, with a frequency response of 3Hz to 75kHz, signal-to-noise ratio of 108dB (A-weighted), and total harmonic distortion of 0.005% at 1kHz. Dimensions are 215 x 75 x 365mm and weight is 4.3kg.

USER MANUAL XPA Cyrus Audio

User Instructions Cyrus XPA

Cyrus XPA

Fig 1

Fig 2
Fig 3

IMPORTANT! Read before operating this equipment!

CAUTION: The exclamation mark is to draw your attention to important instructions and safety procedures in this manual.

ATTENTION: The lightning flash warns you of the risk of electrical shock presented by components inside this product. Unauthorised personnel must not open this unit.

WARNING: To reduce the risk of electrical shock do not remove any unit covers or panels. There are no user serviceable parts in this product.

WARNING: To reduce the risk of electric shock, do not expose this equipment to rain or moisture.

HEED WARNINGS: All warnings on the product and in the operating instructions should be adhered to.

READ ALL THE INSTRUCTIONS: All the safety and operating instructions should be read before the product is operated.

RETAIN INSTRUCTIONS: The safety and operating instructions should be retained for future reference.

FOLLOW INSTRUCTIONS: All operating and use instructions should be followed.

CLEANING: Unplug this product from the mains before cleaning. Do not use liquid or aerosol cleaners. Use a damp cloth for cleaning.

WATER AND MOISTURE: Do not use this product near water - for example, near a bath tub, wash bowl, kitchen sink, or laundry tub, in a wet basement; or near a swimming pool and the like. The product must not be exposed to dripping or splashing and no objects filled with liquids, such as vases, shall be placed on the product.

HEAT: The product should be situated away from heat sources such as radiators, stoves, or any other products (including amplifiers) that produce heat.

VENTILATION: Slots and openings in the cabinet are provided for ventilation, to ensure reliable operation of the product and to protect it from overheating and these openings must not be blocked or covered. The openings should never be blocked by placing the product on a bed, sofa, rug or similar surface. This product should not be placed in a built-in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturer's instructions have been adhered to.

OBJECT OR LIQUID ENTRY: Never push objects of any kind into this product through openings as they may touch dangerous voltage points or short-out parts that could result in a fire or electric shock.

ACCESSORIES: Do not place this product on an unstable cart, stand, tripod, bracket, or table. The product may fall, causing serious injury to a child or adult, and serious damage to the product. Use only with a cart, stand, tripod, bracket or table recommended by the manufacturer, or sold with the product. Any mounting of the product should follow the manufacturer's instructions, and should use a mounting accessory recommended by the manufacturer.

ATTACHMENTS: Do not use attachments not recommended by the product manufacturer as they may cause hazards.

MOVING THE PRODUCT: A product and cart combination should be moved with care. Sudden stops, excessive force, and uneven surfaces may cause the product and cart to overturn.

POWER SOURCES: This product should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power supply to your home, consult your product dealer or local power company. For products intended to operate from battery power, or other sources, refer to the operating instructions.

OVERLOADING Never overload wall outlets, extension cords, or integral convenience receptacles. This can result in an increased risk of fire or electric shock.

POWER CORD PROTECTION: Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the product.

NAKED FLAMES: No naked flame sources, such as candles, must be placed on this product.

LIGHTNING: For added protection for this product during a lightning storm, or when it is left unattended or unused for long periods of time, unplug it from the wall outlet and disconnect the antenna or cable system. This will prevent damage to the product due to lightning and power-line surges.

CAUTION! POLARISED CONNECTOR (CANADA and USA):

To prevent electrical shock, match wide blade of plug to wide slot, fully insert. Do not alter or remove this plug if it does not fit your mains power socket. Have a suitable socket installed by a competent electrician.

POWER SUPPLY:

Connect the moulded IEC connector of the AC cord supplied plugs into the power inlet ⑦ on the rear of the unit. The mains fuse ⑧ is on the rear panel next to the power switch. It must only be replaced as follows:

U.K. / Europe 230V T1A 20mm

N. America / Far East - 115V T2A 20mm

The mains supply requirement for your Cyrus XPA is marked on a label on the rear panel. Before connecting, check that this voltage is the same as your mains supply.

230V Products: Voltage Range 220V-240V

115V Products: Voltage Range 110V-120V

If you move to an area with a different mains voltage, contact your local Cyrus distributor to have your product converted.

NOTE FOR UK CUSTOMERS:

The XPA is supplied with a power cable terminated by a fused 13A mains plug. This plug should not be removed but if it is removed, dispose of it safely and do not re-use it. To connect a new 13A plug, proceed as follows: Connect the brown wire to the terminal marked L or coloured red. Connect the blue wire to the terminal marked N or coloured black. The internal plug fuse should be 5A.

SERVICING:

Do not attempt to service this product yourself as opening or removing covers may expose you to dangerous voltage or other hazards. Refer all servicing to qualified service personnel.

CONDITIONS REQUIRING SERVICE: Unplug this product from the wall outlet and refer servicing to qualified service personnel when:

• When the power supply cord or plug is damaged.
  • If liquid has been spilled, or objects have fallen into the product.
  • If the product has been exposed to rain or water.
  • If the product has been dropped or damaged in any way.
• If the product does not operate normally by following the operating instructions. (Adjust only those controls that are covered by the operating instructions. Improper adjustment of other controls may result in damage requiring extensive work by a qualified technician to restore the product to its normal operation).
• When the product exhibits a distinct change in performance.

REPLACEMENT PARTS: When replacement parts are required, be sure the service technician has used replacements specified by the manufacturer or have the same characteristics as the original part. Unauthorised substitutions may result in fire, electric shock, or other hazards.

SAFETY CHECK: Upon completion of any service or repairs to this product, ask the service technician to perform safety checks to determine that the product is in proper operating condition.

PRODUCT SERVICE CENTRES

For product service or technical advice, contact only authorised Cyrus service centres. The Cyrus distributors are listed at the end of this instruction manual.

Welcome to the world of Cyrus!

Congratulations on your choice of Cyrus Hi-fi products. Our state-of-the-art design technology and outstanding quality of manufacture has won countless awards around the world. We are confident that you will derive great pleasure from owning a product from one of the most recognised and respected manufacturers of hi-fi equipment.

Please read these instructions carefully before commencing installation. They provide full guidance to help you install your Cyrus XPA safely and correctly.

Preparations for Installation

Before installing the XPA check that the following items are included in the accessory box.

• Guarantee Card (with instruction manual)
- Power Cable
- 4 speaker plugs

After removing these items, please retain the packing.

Install the XPA in a well ventilated location away from sources of high temperature, dust or humidity. Never stand the XPA under another unit or on any surface likely to hamper its cooling or ventilation.

INSTALLATION

Key to the rear panel drawing (Fig.1)

1.	Right speaker output +	6.	Left speaker output +
2.	Right speaker output -	7.	Power inlet
3.	Chain Output	8.	Mains fuse
4.	Input	9.	Power switch
5.	Left speaker output -

Connecting to the AC Mains Supply

Connect the socket on the AC Power cable to the Power inlet ⑦ on the rear panel of the XPA. Now connect the cable to a suitable AC power point.

The mains power switch ⑨ on the rear panel of the XPA should be left on for normal operation, except when left unattended for a long period when it should be switched off or disconnected from the AC supply.

Input Connection

Connect a stereo phono interconnect from the output of the preamplifier to the XPA's left and right inputs ④. Be sure to observe colour coding of the plugs to keep left and right channels correctly ordered.

Loudspeaker Connection

Fitting the speaker plugs

Check for polarity indicators (+ and -) on the loudspeaker cable and fit the plugs provided. Observe any signal directionality markings indicated on the cable. If an arrow is printed on the cable it should point toward the loudspeaker.

If additional or replacement speaker plugs are required for the XPA ensure that the correct 'BFA' type are purchased.

Loudspeaker connection

Connect the left loudspeaker to the rear panel sockets ⑥ (red speaker plug) and ⑤ (black speaker plug) of the XPA. Connect the right loudspeaker to the rear panel sockets ① (red speaker plug) and ② (black speaker plug) of the XPA.

Bi-amplification

For convenience of connection in applications such as Bi-Amplification the Chain outputs ③ allow more than one XPA to be connected to a Pre-Amplifier.

The Chain facility can be used with two or more XPAs for Bi/Tri-amping by connecting the Chain output of the first XPA to the inputs of the next XPA. Such a system provides the sonic benefits of totally separate power amplification for the bass and treble units of the loudspeakers.

When adding additional XPAs to a system, connect a quality RCA phono interconnect from the Chain output RCA jacks ③ to the inputs ④ of the new XPA.

When the input connections to the new amplifier are complete, separate connections may be made to the bass and treble units of the system speakers. Fig. 3 shows a wiring schematic for a bi-amped system.

OPERATION

Key to the front panel drawing (Fig.2)

1. Standby Switch
2. Standby Light

Switching On

The mains power switch ⑨ on the rear panel of the XPA should be left on for normal operation, except when left unattended for a long period when it should be switched off or disconnected from the AC supply.

When power is applied, the STANDBY key 10 may be used for power control. The Standby light 11 shows red when the XPA is in Standby and green when operational.

In addition to manual power control from the STANDBY key, the XPA also features a music sensing automatic power control which listens for the presence of an input signal and will switch on if music begins to play. If the XPA has been activated in this way it will reset to Standby five minutes after the music has stopped.

TROUBLESHOOTING GUIDE

If your XPA is not operating properly, disconnect the power and check all connections using the notes in this manual. If problems persist, the checklists below may help.

If you are in any doubt, consult your dealer.

No sound from either speaker
Preamplifier mute switch is on	Deselect Mute
Loudspeakers are disconnected	Check speaker connections
No sound from one loudspeaker
Does your speaker have fuses?	Check speaker, replace fuses
Speaker cables or interconnects faulty	Check connections, cables - replace if needed
Poor quality sound
Speakers plugs not connected to the correct terminals	Check all speaker connections carefully

If after taking remedial measures a fault condition remains, you should return the XPA to your Cyrus appointed dealer or an authorised Service Centre.

WARRANTY

The warranty card enclosed should be completed by the Dealer and the purchaser and returned to CYRUS or its Distributor within 8 days of purchase. No Dealer or Distributor may vary the terms of this warranty which is personal to the original Purchaser and is not transferable.

Please retain the sales receipt as proof of purchase.

Warranty claims must wherever possible be made through the Dealer from whom the equipment was purchased.

This warranty excludes:

• Damage caused through neglect, accident, misuse, wear and tear, or through incorrect installation, adjustment or repair by unauthorised personnel. Any unauthorised servicing will result in loss of guarantee.
• Liability for damage or loss occurring in transit to or from the purchaser.
• Consequential damage, loss or injury, arising from or in conjunction with this equipment.

Equipment for attention under warranty should be consigned return carriage paid. If returned equipment is found to comply with the published specification, CYRUS reserves the right to raise a charge.

The above conditions do not affect your statutory rights as a consumer.

SPECIFICATIONS

Power Supply

Voltage:

As plate on rear of unit

Power Consumption

Standby	12W
ON (2 x 60W/Ch)	185W
Safety Requirements	EN 60065

Enclosure

Dimensions (WxHxD)	215 x 75 x 365mm
Weight	4.3Kg
Material	Die cast chassis

Audio Performance

Input Sensitivity (50W/8Ω)	380mV
Input Impedance	10kΩ
Channel Balance	0.1dB
Frequency Response	(-3dB) 3Hz-75kHz
Signal to Noise Ratio (A-WTD)	(Unwtd) 96dB
(Ref 50W)	(A-wtd) 108dB
Output Power	8 Ohms 50W
THD+N (@ 2/3 full power)	(20Hz-20kHz) 0.05%
	1kHz 0.005%

Cyrus reserves the right to change specifications without notice. E&OE.