Instruction/ maintenance manual of the product SB-301 Plinius
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2 CONGRATULATIONS on your decision to become the proud owner of this Plinius SB-301 Power Amplifier. This manual has been prepared to help you understan d the operation of your amplifier, and to provide information about its design and the variety of ways it may be used.
3 DESIGN PHILOSOPHY From a distance you can see that the design of the Plinius products is more than an applied styling exercise to the front panel. We have started from th e ground up to produce a casing for our electronics that is unrivalled in its physical strength and visual simplicity.
4 C ONTENTS Introduc tion .................................................................................................................. ..................... Page 2 Design Phil osophy ..............................................................
5 P RECAUTIONS Please take special note of the following prec autions before operating your new amplifier: • The Plinius SB-301 Power Amplifier may deliver in ex cess of 300 watts into 8 ohms. This amplifier is also capable of a very large peak current delivery.
6 ST A N D B Y E RROR A MPLIFIER F EATURES – F RONT P ANEL F RONT P ANEL L AYOUT S HOWING S TANDBY A ND E RROR LED S STANDBY LED The Standby LED indicates when the amplifier has been put into standby mode by an external processor (connected to the remote trigger te rminals described later).
7 PUSH PUSH Z258 CAUTIO N RISK OF EL ECTRI C SHO C K DO NOT OPE N A M P L IF IE R C O N F IG U R A T I O N S E L E C T O R RE FE R TO OW N ERS M A N UA L FOR USA GE I NSTRUCTI ON S R C A S T ER EO X L R S T E R EO 1100 V A PLIN IUS SB- 3 0 1 S T ER EO P OW ER A MP L I F I E R SERIAL No .
8 A M P L IF IE R C O N F IG U R A T IO N S E L E C T O R RE FE R TO OW N E RS M A N U A L F OR U SA G E I N S T RUCTI ON S R C A S T EREO X L R S T ER EO INPUT TERMINALS Input terminals for your Plinius SB- 301 Power Amplifier are easily acce ssible and fitted to the top centre area of the rear panel.
9 The ACS switch options are: RCA STEREO: This option provides a stereo output via both left and right output channels fro m a stereo signal connected to both left and right input RCA inputs. XLR STEREO: This option provides a stereo output signal from a balanced stereo input signal connected to both the left and right XLR inputs.
10 GROUND LIFT SWITCH This switch is located adjacent to the Mains In put Socket, and allows the signal ground to be disconnected from the chassis. In some installation s a hum loop may exist due to duplicate ground paths from different equipment.
11 I NSTALLATION AND O PERATION PLACEMENT AND VE NTILATION Your Plinius SB-301 is designed to operate at a moder ately high temperature, even more so when used in Class A. The ideal location is on a rigid stand or floor mounted away from direct contact with any temperature sensitive materials or deep pile carpets.
12 RI G H T OU T PU T S + + LEF T OU T PU TS + + A M PL I F I E R CON FI GU RAT I O N SE L E CT O R RE FE R TO OW N E RS M A NU A L FOR USA GE I N ST RUCTI ON S R C A S T ER EO X L R ST ER EO R I G HT.
13 XLR STEREO Connect your processor or input signal to the two XLR inputs at the top of the amplifier back panel. Make sure you connect the RIGHT XLR input and LEFT XLR inputs to the right and left outputs from your processor respectively. Also make sure the XLR connectors click into place.
14 CONNECTING THE MAINS SUPPLY Now that your Plinius SB-301 Power Amplifier is config ured to your system corre ctly, the mains cable can be plugged into the IEC connector on the back of the amplifier. Once the power is connected, flick the main power switch on the front panel to the right.
15 SB-301 F EATURES ERROR DETECTION The Plinius SB-301 Power Amplifier has in-built error de tection. This will func tion under the following conditions: • When the amplifier is overdriven/clipped • If any internal fuse is damaged Should either of these circumstances arise the amplifie r will disconnect both channels and mute the input.
16 MAINS/LINE FUSE A Mains/Line fuse is fitted within th e IEC Mains/Line socket on the rear of the amplifier. A small drawer a t the bottom of this socket may be removed (after the IE C plug is removed) by levering it out with a flat blade screwdriver.
17 L OUDSPEAKER S ELECTION Your Plinius SB-301 Power Amplifier is designed for use with high fidelity loudspea kers. It should not be used to operate any other type of appliance or equipment. Choice of loudspeakers is one of personal taste, pr oviding the chosen loudspeakers are suitable for use with your amplifier.
18 S PECIFICATIONS 310-WATTS CONTINUOUS PER CHANNEL INTO 8 OHMS. BOTH CHANNELS DRIVEN FR OM 20Hz TO 20kHz. F REQU ENCY R ESPONSE : 20Hz to 20kHz ± 0.2dB. -3dB at 1Hz and -3dB at 70kHz. D ISTORT ION : Typically <0.05% THD at rated power. 0.
19 I NDEX ACS (Amplifier Config uration Selector) ......................................................................................... .P a g e 8 Balanced Signal ....................................................................................
20 C ONTACT D ETAILS All operational, technical and descriptive material publ ished here is subject to change at any time without notice. For further product info rmation or queries, please cont act us a t the address below. PLINIUS products are designed and manufactured by: Plinius Audio Ltd.
An important point after buying a device Plinius SB-301 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Plinius SB-301 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Plinius SB-301 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Plinius SB-301 you will learn all the available features of the product, as well as information on its operation. The information that you get Plinius SB-301 will certainly help you make a decision on the purchase.
If you already are a holder of Plinius SB-301, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Plinius SB-301.
However, one of the most important roles played by the user manual is to help in solving problems with Plinius SB-301. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Plinius SB-301 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
