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1 Read these instructions.
2 Keep these instructions.
3 Heed all warnings.
4 Follow all instructions.
5 Do not use this apparatus near water.
6 Clean only with dry cloth.
7 Do not block any ventilation openings. Install in accordance with the

manufacturer’s instructions.

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

apparatus (including amplifiers) that produce heat.

9 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 fit into your outlet, consult an
electrician for replacement of the obsolete outlet.

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

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

11 Only use attachments/accessories specified by the manufacturer.
12

Use only with the cart, stand, tripod, bracket, or table

specified 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.

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

time.

14 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 equipment should be installed near the socket outlet and disconnection of the
device should be easily accessible.

To completely disconnect from AC mains, disconnect the power supply cord from
the AC receptacle.

The mains plug of the power supply shall remain readily operable.

Do not install in a confined space.

Do not open the unit – risk of electric shock inside.

Caution:

You are cautioned that any change or modifications not expressly approved in this

manual could void your authority to operate this equipment.

Service

There are no user-serviceable parts inside. 

All service must be performed by qualified personnel.

IMPORTANT SAFETY INSTRUCTIONS

Voltage 

Line plug according to standard

110-125V

UL817 and CSA C22.2 no 42.

220-230V

CEE 7 page VII, SR section 
107-2-D1/IEC 83 page C4.

240V

BS 1363 of 1984. 
Specification for 13A fused plugs and switched 
and unswitched socket outlets.

Warning!

To reduce the risk of fire or electrical shock, do not expose this equipment to
dripping or splashing and ensure that no objects filled with liquids, such as vases,
are placed on the equipment.

This apparatus must be earthed.

Use a three wire grounding type line cord like the one supplied with the product.

Be advised that different operating voltages require the use of different types of line
cord and attachment plugs.

Check the voltage in your area and use the correct type. Please refer to the
following table:

Summary of Contents for RH450

Page 1: ...RH450 USER S MANUAL...

Page 2: ......

Page 3: ...d 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...

Page 4: ...rent from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help For Customers in Canada This Class B digital apparatus complies with Canadian ICES 0...

Page 5: ...Certificate of Conformity a b Table of Contents 3 Introduction 4 Quick Setup Guide 5 OPERATION Front panel 6 RC4 13 Rear panel 14 APPENDIX General Protection mode 17 Heat Protection mode 17 Technical...

Page 6: ...gives you all the character of a tube amp while delivering 450 Watts of undiluted power RH450 has traditional tone controls but also includes groundbreaking features giving the amp a personality and...

Page 7: ...u can connect up to three RS cabinets or any other two 8 Ohm cabinets of another brand to the amplifier minimum load 4 Ohm Connect the power cable and power up The RH450 s power supply accepts voltage...

Page 8: ...he amount of SpectraComp compression SpectraComp uses a so called spectral or multi band approach to compression allowing for individual compression of the low mid and high frequency bands Multiband c...

Page 9: ...mpressed at all or that just when the G string starts to sound right the low E string is compressed too strongly In other words You are constantly dealing with a tight and difficult compromise With Sp...

Page 10: ...ample Press SHIFT and turn the LO MID knob to change the center frequency of that control While the RH450 is in Shift mode the SHIFT button will be blinking to remind you that you are in Shift mode Wh...

Page 11: ...MEM preset When you haven t been using the RH450 s front panel controls for about twenty seconds the LED will flash rapidly and the RH450 will automatically return to normal mode In normal mode the T...

Page 12: ...evel Settings When you haven t been using the RH450 s front panel controls for about twenty seconds the RH450 will return to normal mode where the knobs control the primary functions printed in white...

Page 13: ...A are indicated as follows Example A The tuner also offers a Mute mode with additional tuner information To activate Mute mode simply press the MUTE button Now the BASS tone control turns into a high...

Page 14: ...eference The center position equals 440 Hz and each LED represents one Hertz So to set the tuner reference frequency e g to 438 Hz turn the BASS knob counter clockwise until the second LED on the left...

Page 15: ...ns of the front panel knobs no longer correspond with the stored settings 2 MUTE button Press the M ute button to mute the RH450 s outputs This is useful for tuning or e g unplugging changing your bas...

Page 16: ...andy when you use the RH450 on a tour The ground pin of the PSU must be connected in order to avoid voltage differences between e g the PA and the RH450 2 SPEAKER OUT Use the SPEAKER OUT combo connect...

Page 17: ...recording In order to record straight from the RH450 s digital output follow these steps Connect the RH450 s DIGITAL OUT jack to your DAW Set your DAW to follow slave to external clock Hit the record...

Page 18: ...ification power at your fingertips 8 LINE DRIVER OUT Balanced Line Out Use the LINE DRIVER OUT jack to connect the RH450 to the PA when you play on stage or to connect your amp to a recording device w...

Page 19: ...ill indicates P you will have to send the RH450 to a qualified service center for inspection Heat Protection Mode If the display indicates an H the amp is too hot This is rarely seen but a few extreme...

Page 20: ...APPENDIX SIGNAL FLOW 18...

Page 21: ...659 26Hz Mutes speaker out Phones out and Balanced out Studio quality headphone amp 40 to 600 Ohm Mains supply Speaker out Power rating Balanced output Max Output Optimal Load Impedance Preamp out Po...

Page 22: ......

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