AUDIOLAB 8300MB (01) PDF MANUAL

Read these instructions.

Keep these instructions.

Heed all warnings.

Follow all instructions.

Do not use this apparatus near water.

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.

Do not defeat the safety purpose of the polarized or grounding plug.

Protect the power cord from being walked on or pinched.

Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. Use caution when moving the cart/apparatus combination.

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

Refer all servicing to qualified service personnel.

Clean only with dry cloth. The surface of the equipment may be cleaned with a barely damp cloth provided the power has been switched off. Solvent based cleaners should not be used.

Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. Do not install this equipment in a confined or built-in space such as a bookcase or similar unit, and keep well ventilated in open space. The ventilation should not be impeded by covering the ventilation openings with items such as newspaper, table-cloths, curtains etc. The fins of the heat sink should be kept clear of obstruction to allow adequate ventilation in normal use. If you use equipment racks, ensure the unit has adequate ventilation and is on its own shelf.

A grounding plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

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.

The mains operating voltage of Audiolab 8300 series units is shown on the rear panel. If this voltage does not match the mains voltage in your area, consult your Audiolab dealer about converting the unit. If the amplifier is connected to a lower voltage than marked, the maximum output power will be lower than specified. Please check with the dealer if you have any doubt as to the voltage in your area or intend to use the equipment in regions which use different mains voltages.

The mains supply fuse on the rear panel is accessible when the IEC mains plug has been removed. In the rare event that it has broken, check for any obvious cause before replacing the fuse with one of the correct rating and type. The fuse values are:

220 – 240V (UK, China, etc.) T4.0AL 250V Slow Blow

100 – 120V (USA, Japan, etc.) T8.0AL 250V Slow Blow

The mains plug/appliance coupler/direct plug-in adapter is used as disconnection device; the disconnection device shall remain readily operable.

To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. The apparatus shall not be exposed to dripping or splashing and ensure that objects filled with liquids, such as vases, shall not be placed on the apparatus. No naked flame sources, such as lighted candles, should be placed on the apparatus.

This equipment is a Class II or double insulated electrical appliance. It has been designed in such a way that it does not require a safety connection to electrical earth.

•RCA/XLR Line input selector

•250W full power output

•Support 4 ohm or 8ohm loudspeaker

•0.5W ErP standard standby power consumption

•Low THD Hi-end amplifier

•Standby key control function

•True balanced design for high-end sound quality

Unpack the product fully. The carton should contain:

• The Audiolab 8300MB

• One IEC power cord suitable for your area

• This instruction manual

If an item is missing or damaged, report this to your dealer as soon as possible. Remain the packing for safe transport of your unit. If you dispose of the packing, please do so with regard to any recycling regulations in your area.

The unit is designed to run warm during normal operation but ensure you do not block any ventilation openings. Place the unit on a sturdy shelf or table. If you use equipment racks, ensure the unit has adequate ventilation and is on its own shelf.

Important notice: Please do not connect loudspeakers or source components to the amplifier when switched on. Always switch 8300MB off before making connections!

A resettable current trip will automatically switch the amplifier off under gross overload or short circuit output etc. The fins of the heat sink should be kept clear of obstruction to allow adequate ventilation in normal use. (See also Amplifier Protection Trip section).

The Audiolab 8300MB mono amplifier is supplied in four versions suitable for connection to 240V, 230V, 115V or 100V AC power supplies. Before connecting the amplifier check that you have the correct version. Connect the supplied IEC mains cable to the Mains Input socket on the rear panel.

The Audiolab 8300MB mono amplifier is provided with a mains cable fitted with an appropriate mains plug. This plug should not be cut from the cable. If for any reason, the plug is removed it must be safely disposed. It must never be plugged into a mains outlet. Any replacement plug should be wired to the supplied mains cable as follows:

The BROWN wire must be taken to the LIVE terminal

The BLUE wire must be taken to the NEUTRAL terminal

If you are connecting a Audiolab 8300MB mono power amplifier to the Audiolab 8300CD CD player, we strongly advocate the use of the balanced XLR connections. XLR inputs use 3 conductors, one for ground and two for the voltage plus and minus signals. In this way the signal transmitted to the amplifier is thus ‘cleaner’ and free from earth-induced currents and other air-borne interference. XLR interconnects should be of screened, twisted pair construction. Refer to your dealer if in doubt. Connect the XLR cable to the XLR input on the 8300MB rear panel. Ensure the Input Selector switch is in the normal (extended) position for XLR input.

If you cannot use the XLR inputs, connect an RCA phono interconnect between the unbalanced inputs (labelled LINE) on the 8300MB rear panel with the matching output of the source unit. Press the Input Selector switch in for unbalanced RCA phono input.

When connecting the signal input, ensure the Input Selector is switched to the appropriate input.

• In the normal (extended) position the balanced XLR input is selected.

• Press the selector in for unbalanced RCA phono input.

Audiolab 8300MB mono amplifier has one pair trigger connections (IN and LINK) on the rear panel. It can be activated by an 8300CD’s or any other source’s trigger output (12V). The 8300MB can also bypass the source’s trigger signal (via the LINK output) to another 8300MB, allowing one source to trigger two 8300MBs simultaneously. If you have an 8300 system, connecting the triggers is advised. This will enable all 8300 units to be brought in and out of standby along with the trigger connections.

To connect to your control unit, you will need a cable with one end to match the trigger output of the control unit and the other terminating in a 3.5mm jack plug. For Audiolab 8300 series units, this will be a 3.5mm to 3.5mm interconnect. Connect the trigger cable from the TRIG OUT of an 8300CD or any other control unit having a 12V master trigger out to the TRIG IN of the first 8300MB. Then connect the TRIG LINK output of the first 8300MB to the TRIG IN of a second 8300MB if used.

The performance of amplifiers tends to stabilize after a period of use due to a number of factors associated with the physical and chemical properties of the components. We recommend that the system be run with a music signal for several hours when it is first installed. Although the changes can be quite subtle, after a few days the sound quality becomes smoother and more natural.

The Audiolab 8300MB mono amplifier Mains on/off switch is on the rear panel. Press the switch to power 8300MB on/off. The power LED will glow red when the amplifier is powered on. The Mains On/Off switch should be switched off when the amplifier is not in use.

Always switch on the power amplifier after the rest of the system and switch it off before powering down any source component. Ensure the system volume control is at minimum when switching your equipment on or off.

Audiolab 8300MB mono amplifier will be in standby mode when power is initially turned on using the rear panel switch (Power LED is red). Press the Standby button (labelled with a power symbol) on the front panel to bring the 8300MB out of standby; the power indicator LED becomes brighter. Press the Standby button again to return the unit to standby mode (Power LED becomes red/dimmer).

You can activate the ‘auto standby’ function by holding the Standby button down for 3 seconds. Using this ‘auto standby’ function, the 8300MB will automatically go into standby mode when there is no signal input or operation for 20 minutes, and the power indicator LED becomes dim.

The Audiolab 8300MB mono amplifier is protected by a thermal fuse which interrupts the audio output if the amplifier is grossly overloaded for a period of time. The LED on the front panel will flash when the 8300MB is in protection mode. To restore operation, simply power the unit off using the rear panel switch for a while and then power it on again.

Make sure that both channels (both 8300MB units in a stereo setup) are connected in phase. The positive (red) output terminal of each channel should be connected to the positive (red) terminal of the corresponding speaker. Special care should be taken when bi-wiring as phase becomes critical.

If there is a doubt about the way the loudspeakers are connected, check their phasing by playing a mono source – the sound should appear from a point midway between the two loudspeakers. If this position is unfocused, reverse the connections (+ and -) to one of the loudspeakers. Correctly connected loudspeakers give a defined center sound source with fuller bodied midrange and bass registers.

(Measurement made with 230V supply)

Rated Output Power	255W 8 ohm (<1% THD, 1kHz)
Total Harmonic Distortion	<0.005% (100W 1kHz) <0.01% (100W, 20Hz-20kHz)
Frequency Response	-0.5dB (20Hz-20kHz, ref. 1kHz) -3dB (0.1Hz-150kHz, ref. 1kHz)
Input Sensitivity	1500mV (RCA line in)
Input Impedance	44 kohm (Balanced) 22 kohm (Unbalanced)
Signal to Noise Ratio (S/N)	115dB (A Weighted, ref. 250W)
Power Requirement	240V~50-60Hz 230V~50-60Hz 115V~50-60Hz 100V~50-60Hz
Maximum Power Consumption	400W
Standby Power Consumption	<0.5W
Dimensions(mm) (W x H x D)	216 X 150 X 370
Carton Size(mm) (W x H x D)	350 X 285 X 495
Weight	9.5kg (Net) 11.5kg (Gross)

Correct disposal of this product. This marking indicates that this product should not be disposed with other household wastes throughout the EU. To prevent possible harm to the environment or human health from uncontrolled waste disposal, recycle it responsibly to promote the sustainable reuse of material resources. To return your used device, please use the return and collection systems or contact the retailer where the product was purchased. They can take this product for environmental safe recycling.