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TIP

Ideally, the monitors should be placed more than 0.5 metres from the side and rear walls of 
the room so that reinforcement and cancellation (peaks and dips) of the bass output caused 

by wall reflections will be moved higher in frequency and thus less influential. This reduces the 

incidence of ‘lumpy’ or ‘boomy’ bass. Small changes in position can have profound effects on 

the bass response, so experiment to find the optimal position.

Bass Response

IB2S-Active Series monitor loudspeakers can produce significant bass energy below the 

frequencies at which they become omnidirectional. As a consequence, it is important to 
consider the effect of the boundaries of the listening room when placing the monitors. The use of 

plinth modules can assist in fine tuning the in-room bass response. 

Summary of Contents for IB2S-A

Page 1: ...User Guide IB2S A Series TM Advanced Transmission Line ...

Page 2: ......

Page 3: ...d is a member of a National Compliance scheme and has gained the associated certification of compliance from the Environment Agency with the registration WEEE GJ0101WU WEEE EU Directive This symbol on the product and in or on its packaging indicates that this product must not be disposed of with other household waste It is the responsibility of the owner to dispose of waste equipment via a designa...

Page 4: ...level of sonic resolution with solid engineering principles We believe that the same loudspeaker can be used throughout the entire audio chain from composer to studio or film stage post production or mastering and then finally the consumer Our unswerving passion for getting it right has made this goal possible Thank you for choosing PMC products It is now time for you to read the user guide instal...

Page 5: ...lliams Coldplay Brian May Universal Sony Dreamworks Deutsche Grammophon and the BBC among the makers of movies and music Our loudspeakers were used in the production of Titanic Spiderman III Pearl Harbor Finding Nemo Pirates of the Caribbean III and during broadcasts of the Beijing Olympics 2008 Tori Amos StevieWonder Francis Rossi Status Quo BBC Tony Bennett Prince Coldplay UNIVERSAL MUSIC GROUP ...

Page 6: ...orks System Description User EQ Options Connections Running In Applications and Accessories Positioning Surround System Set up Operational Controls The PMC Range Service Specifications Our Meticulous Care and Attention Warranty On Line Warranty Certificate Part 1 Your copy Warranty Certificate Part 2 PMC s copy Help us improve Your Comments Inspection Certificate ...

Page 7: ...pressure levels in excess of 120dB Long term exposure to high levels of sound has the potential to cause hearing damage Use care when adjusting the system volume to ensure sound pressure levels remain within safe and comfortable limits The IB2S Active Series loudspeaker contains very powerful magnets and therefore may have a detrimental effect on nearby magnetically sensitive items such as CRT tub...

Page 8: ...e The perforated acoustic lens extends the response beyond 25kHz and controls dispersion to ensure perfect integration with PMC s own 75mm soft dome midrange driver through the crossover region This midrange driver is also well proven in other PMC monitors and is the lowest distortion and most efficient soft dome of its size available today The unique 10 inch bass driver uses a carbon fibre and No...

Page 9: ... attempt to repair the unit yourself There are no user serviceable parts inside Contact your dealer for advice and a service return address Cleaning with a dry lint free cloth Avoid the use of solvents as they may damage the finish of the unit IB2S ACTIVE 3 Way Master cabinet Pair User guide 2x IEC mains power leads region appropriate 1x Remote control 1x 20m RJ45 RJ45 cable for remote control 1x1...

Page 10: ...nd ported designs currently available elsewhere PMC s innovative approach places the bass driver near one end of a long tunnel the Advanced Transmission Line This tunnel is heavily damped with acoustic material specified carefully to absorb the upper bass and higher frequencies radiating from the rear of the bass driver The lowest frequencies are allowed to pass down the line and emerge from the l...

Page 11: ...igital signal processing enables perfect matching between the three drivers responses and roll off rates optimising the contribution of each driver minimising distortion and providing a flatter and more natural balance over the widest possible listening area The output signals from the DSP system are converted back to analogue to feed three separate Class D power amplifiers and their respective dr...

Page 12: ...equalisation presets each of which can be named for easy recognition eg Frank Geoff etc These DSP based user equalisation options include LF and HF shelf responses as shown in the graph above each adjustable over a range of 8dB in increments of less than 1dB with fixed knee frequencies of 200Hz and 5kHz respectively ...

Page 13: ...ons are provided for signal distribution Power A single IEC C14 mains socket is provided with an integral fuse holder voltage selector 115 230VAC and power switch Only change fuses with the power cord removed completely from the loudspeaker A remote powering facility is provided via the Trigger In terminals which accept a 4 to12V AC or DC voltage to enable remote switch on from an external device ...

Page 14: ...ancy The TM Advanced Transmission Line cabinet parameters are critically designed to load the bass driver accurately only when it has reached its long term optimal compliancy Consequently during the initial running in period of about 20 hours the performance of the IB2S Active Series active monitor will change and improve You will notice the bass tonality becoming warmer fuller and more natural an...

Page 15: ...ging dynamics and overall tonal balance An acoustically inert 190mm high mass plinth or spacer is also available to optimise the system height placed below or between IB2S Active and XBDS Active cabinets M8 threaded inserts accept spikes or floor protecting glides One or more XBDS Active cabinets can be incorporated where greater low frequency extension or headroom is required or where a dedicated...

Page 16: ... your new loudspeakers Fine tuning of their positioning can start from there Dispersion and Toeing in Most loudspeakers have a relatively narrow dispersion and are designed to be aimed directly at the listening position as shown in the left hand image below However the excellent stereo imaging which PMC monitors are known for is due in part to their wide dispersion characteristic as shown on the r...

Page 17: ...imaging significantly and may introduce unwelcome colouration of the sound Place the speakers so that their front baffles are well forward of any objects placed between them such as computer display screens With regard to vertical placement the acoustic axis of the IB2S Active master cabinet is midway between the HF and MF drivers This axis should be level with the listener s ears To prevent verti...

Page 18: ...hich minimises this and so there are inevitably two sources of sound When the drive units are aligned one above the other the two wavefronts emanate from one vertical plane and both will arrive at the listener at the same time providing accurate stereo imaging and minimal colouration This is illustrated in the left diagram below In contrast if the speaker is mounted horizontally the wavefronts fro...

Page 19: ...ce of lumpy or boomy bass Small changes in position can have profound effects on the bass response so experiment to find the optimal position Bass Response IB2S Active Series monitor loudspeakers can produce significant bass energy below the frequencies at which they become omnidirectional As a consequence it is important to consider the effect of the boundaries of the listening room when placing ...

Page 20: ...tors when bass management is being used The subwoofer should be placed at the front of the room the optimal position providing the smoothest low bass without boomy or weak notes 7 1 Systems In a system capable of 7 1 Dolby Digital Surround EX DTS ES or Blu ray playback there will be two sets of surround speakers The first pair surround or side channels should be positioned at 100º and the second s...

Page 21: ... together with the current volume setting 00 0dB in the example below The upper row indicates the current function Volume in this example and the asterix symbols warn of a clipped loud speaker channel V o l u m e L C R L s R s 1 2 0 0 0 d B 1 Standby Mode Standby mode is activated either on start up when power off is pressed in the main menu or when a trig ger signal is lost if the Trigger ON mode...

Page 22: ...ll look like this in this example only left and right channels are in use and volume is 15dB L _ R _ _ _ _ _ _ 1 5 0 d B Actions Rotary UP DOWN changes volume in 0 5dB steps minimum 48 5dB maximum 15dB Save value and send value to all channels Button press MENU the main menu appears see 3 BACK If held for more than two seconds the volume locks at the current setting The display looks like this wit...

Page 23: ...othing 3 1 Setup Menu The setup menu is shown when the SELECT button is pressed in the main menu with setup menu as the active sub menu or when the BACK button is pressed in the channel select menu the analogue input sensitivity menu the 12V trigger mode menu or the channel settings menu Which setup sub menu option appears is dependent on the last shown setup sub menu option The last shown setup s...

Page 24: ... n n e l A l i a s e s C h 1 Sub menus Access Ch1 through Ch12 Actions Rotary UP DOWN scroll up down in the submenu list Buttons MENU nothing BACK the setup menu appears see 3 1 PRESET if pressed briefly the current preset is displayed for 2 seconds If pressed for more than two seconds the preset menu appears see 4 SELECT enters channel aliases menu see 3 1 2 1 MUTE a mute un mute command will be ...

Page 25: ...e 12V trigger mode menu is shown when the SELECT button is pressed in the setup menu with 12V trig ger mode menu as active sub menu The current setting appears this example shows the ON mode 1 2 V T r i g g e r M o d e O n Sub menu ON or OFF Actions Rotary UP DOWN scrolls up down through the sub menu list Buttons MENU nothing BACK the setup menu appears see 3 1 PRESET If pressed briefly the curren...

Page 26: ...nets settings C h 1 M a i n S o u r c e A n a l o g u e I n Sub menus Analogue In Main AES3 Left Main AES3 Right Actions Rotary UP DOWN scroll up down in the sub menu list Buttons MENU nothing BACK the channel settings menu appears see 3 1 4 PRESET If pressed briefly the current preset is displayed for two seconds If held for more than two seconds the preset menu appears see 4 SELECT saves setting...

Page 27: ... shuts down and standby mode is displayed see 1 2 OFF mode nothing 3 1 4 4 LFE Trim Menu The LFE Trim menu is shown when the SELECT button is pressed in the Channel Setting menu with LFE Trim as the active sub menu The selected channel in the channel settings menu appears in this example Ch1 and the current value appears in this example 1 00dB There are no sub menus C h 1 L F E T r i m 1 0 0 d B A...

Page 28: ...sub menu option in this example Preset Aliases P r e s e t S e t u p P r e s e t A l i a s e s Sub menus Preset Aliases 1 Preset A to 5 Preset E Actions Rotary UP DOWN scrolls up down through the sub menu list Buttons MENU nothing BACK the preset menu appears see 4 PRESET If pressed briefly the current preset is displayed for two seconds If held for more than two seconds the preset menu appears se...

Page 29: ... to all channels The display backlight flashes once per second when muted Clip Nothing Trigger ON mode system shuts down and standby mode displayed see 1 2 OFF mode nothing 4 1 2 Preset Settings Menu The preset settings menu is shown when the SELECT button is pressed in the preset setup menu with one of the five presets as active sub menu or when the BACK button is pressed in the preset Front or R...

Page 30: ...ent value 1 00dB There are no sub menus 1 F r o n t H F S h e l f 1 0 0 d B Actions Rotary UP DOWN changes the Front HF Shelf in steps of 0 125dB The minimum value is 8 00dB and the maximum is 7 87dB Buttons MENU nothing BACK the preset settings menu appears see 4 1 2 PRESET if pressed briefly the current preset is displayed for two seconds If held for more than two seconds the preset menu appears...

Page 31: ...ay backlight flashes once per second when muted Clip Nothing Trigger ON mode system shuts down and the standby mode is displayed see 1 2 OFF mode nothing Summary Table The table on the following two pages summarises the menu structure of these control functions and associ ated displays with reference to the notes below 1 Note that Aliases are assigned to speakers in the order that they are connect...

Page 32: ...g Trigger 10 Trigger Mode Off Menu 2 secs Setup Channel Aliases Ch 1 1 None Left Master Left XBD 5 Right Master Right XBD Centre Master Centre XBD Left Surr Master Left Surr XBD Right Surr Master Right Surr XBD LFE 1 LFE 2 All Channel Mute Mute 3 Blacklight Flashes Ch 2 Ch 3 Ch 4 Ch 5 Ch 6 Ch 7 Ch 8 Ch 9 Ch 10 Ch 11 Ch 12 Analogue In Sens 4dB to 20dB 10 12V Trigger Mode 9 On Off ...

Page 33: ...t Surr XBD Right Surr Master Right Surr XBD LFE 1 LFE 2 Current Preset Presets Preset n Alias Preset Presets 2 secs Preset Setup Preset Aliases Preset A ABC 4 Preset n Alias Preset B Preset C Preset D Preset E 1 Preset A Front LF Shelf 6 8 00 to 7 87dB Front HF Shelf 8 00 to 7 87dB Rear LF Shelf 8 00 to 7 87dB Rear HF Shelf 8 00 to 7 87dB 2 Preset B 3 Preset C 4 Preset D 5 Preset E No Preset 1 Pre...

Page 34: ... sizes of monitors to be used in concert to create effective multichannel systems where space is at a premium Almost all of the larger models from the IB2 upwards are available as either fully active or passive versions while all the smaller models IB1 downwards are passive models which can be activated if required the passive speaker is fitted with a single integral power amplifier The exceptions...

Page 35: ...onse as a whole for every loudspeaker we produce For any issues that might arise or for advice and service requirements the primary point of contact should be your authorised PMC dealer distributor If you do not have a local representative please see www pmc speakers com and click on distribution Alternatively you can view the FAQ s Frequently Asked Questions and servicing section on our website C...

Page 36: ...MC designed midrange HF 34mm 1 25 inch FerroFluid cooled Soft Dome with integral PMC dispersion plate Input Connectors Balanced analogue main LFE inputs both with Thru outputs AES3 digital main LFE inputs with Thru outputs XLR 3F connectors wired Pin 1 screen Pin 2 hot Pin 3 cold Input Sensitivity Adjustable 4 to 20dBu Digital Sample Rate 32 192kHz 24 bit via internal Sample Rate Converter Mains P...

Page 37: ... analogue LFE AES3 left LFE AES3 right All with 8dB level trims Amplifier Section LF 800Wrms MF 200Wrms HF 200Wrms User Equalisation LF Shelf 8dB HF Shelf 8dB Remote Control Wired remote control via RJ45 socket enabling control and setup of up to six channels Incorporates rotary volume control spanning 48 5dB to 15dB ...

Page 38: ...e can ensure your purchase sounds identical to the original design Each completed loudspeaker then undergoes a set of objective and subjective measurements For example frequency response sweeps ensure that the unit meets our exacting performance criteria and critical listening tests are conducted against the reference model using a wide variety of audio material from a benchmark BBC speech recordi...

Page 39: ...ess to the internet fill in the warranty form on pages 40 and 41 and post page 41 to us SIMPLY ACTIVATE YOUR 5 YEAR WARRANTY ON LINE Warranty On Line GO TO WWW PMC SPEAKERS COM AND CLICK ON REGISTER PRODUCT WARRANTY ON LINE ...

Page 40: ...the Our Copy card or an on line registration which must be made within ten days of purchase or receipt The warranty covers defects due to faulty materials or workmanship but does not cover defects arising from accidental damage misuse or wear and tear The warranty is void if any attempt has been made by persons not authorised by PMC Ltd to dismantle repair or modify any part of the product Product...

Page 41: ...il address Your address Town County Postcode Zip code Warranty CERTIFICATE Part 2 Please complete and return this section or simply complete the on line registration at www pmc speakers com and click on register product PMC s copy Help us to improve our products See over ...

Page 42: ...phone Tape Op Esquire SoundonSound forum Other Other Other Other Please tell us how your new PMC loudspeakers perform Your comments may appear on the customer quotes section for this product on our website but don t worry the comments will be anonymous and your personal details will not be published We hope you enjoy your latest purchase as much as we enjoyed designing and building them Thank you ...

Page 43: ... receive an identical replica of the original reference model Inspection Certificate Enclosure finish Assembly Wiring Driver installation Enclosure seal Level Frequency Pair matching Listening test 1 Listening test 2 Final inspection Accessory pack User Guide Date These have all been carefully checked by the builder of your IB2S Active Series loudspeakers ...

Page 44: ...mpany Limited The Professional Monitor Company Limited will not assume responsibility for errors that may appear in this document Information may be subject to change Document edited by Apple Pear Productions Ltd Inspection Certificate cont Job No 206 IB2S A manual V2 May 2012 Copyright 2012 All rights reserved Serial no Serial no Hand built by IB2S Active XBD Active ...

Page 45: ...ULTIMATE MONITORING ...

Page 46: ...T 44 0 870 444 1044 E sales promonitor co uk W www pmc speakers com Job No 206 IB2S A manual V2 May 2012 ...

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