Plinius SB-301 manual

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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. We have designed and manufactured this amplifier to reproduce faithfully and a[...]

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. Wherever possible we have reduced the number of parts need[...]

4 C ONTENTS Introduc tion .................................................................................................................. ..................... Page 2 Design Phil osophy ............................................................................................................. ................ Page 3 Precautions ...............[...]

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. • The Plinius SB-301 Power Amplifier is capable of gene rating temperatures that co[...]

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). When th e Standby LED is on, the external processor has [...]

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 . MAINS F USE POWE R CONS UM P TI ON FRE Q UENCY VO LTAGE A MPL[...]

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. A brief summary of connection possibilities is[...]

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. All the advantage[...]

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. Use this switch to remove the connection from 0V to ground thus allowing some flexibility in your part[...]

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. The flow of air around the amplifi[...]

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 I N PU TS LE FT I N P UT S I NP UT /O UTP UT C ONNECTION R EAR P ANEL S HOWING L OCATION O F I NPUT /O UTPUT T ERMINALS It is important that you conn[...]

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. Next connect your loudspeaker wires to the output post s [...]

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. The power LED will pulse until the circuitry within the am[...]

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. This co[...]

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. The fuse fitted should be rated as specified on the rear panel. In the unusual event that this f[...]

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. Be certain th at your loudspeake[...]

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. 0.1% THD and IM worst case prior to clipping.  C URRENT O UTPUT : 50A short duration peak per chan[...]

19 I NDEX ACS (Amplifier Config uration Selector) ......................................................................................... .P a g e 8 Balanced Signal ................................................................................................................ ............. Page 9 Bi-wiring........................................[...]

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. P.O. Box 1836 Palmerston North New Zealand Phone: 64 6 [...]