Snell Acoustics ICS Sub 24 Speaker User Manual
Contents
1. Mounting The appliance should not be mounted to a wall or ceiling Ventilation The appliance should be situated so that its location or position does not interfere with its proper functioning For example the appliance should not be situated on a bed sofa rug or similar surface that may obstruct the heat sink surfaces or placed in a built in installation such as a bookcase or cabinet that may impede the flow of air near the heat sink surfaces Heat The appliance should be situated away from heat sources such as radiators stoves or other appliances that produce heat Power Sources The appliance should be connected to a power supply only of the type described in the operation instructions or as marked on the appliance Power Cord Protection Supplies should be routed so that they are not likely to be walked on or pinched by items placed upon or against them Pay particular attention to cords and plugs convenience receptacles and the point where they exit from the appliance Cleaning The appliance should only be cleaned as recommended by the manufacturer Non Use Periods The power supply cord should be unplugged from the outlet when left unused for long periods of time Object and Liquid Entry Care should be taken so that objects do not fall into and liquids are not spilled into the inside of the appliance Damage Requiring Service The appliance should be serviced if any of the following events occur Pm he pow2. sure there are no loose strands that could touch another terminal and cause a short circuit NOTE When making high level connections be sure to maintain proper polarity that is connect to positive to positive and to negative to negative All wire has one of its conductors marked in some way to make it easy to trace the connections Typically there is a stripe on the insulation or a rib molded into it Or the insulation will be transparent and the wire strands of one conductor will be copper colored and the other will be silver colored Preferred Connection Method The preferred method for making high level Amplifier Receiver or connections is to connect the speaker outputs of Preamp Power Amp your amplifier to the High Level inputs of the ICS Sub 24 and then connect the main speakers to the High Level Outputs This is the best connection method because the High Level Outputs are high pass filtered the low bass sound is removed The reduces the portion of the sound range the main Speakers must reproduce and makes it easier to adjust the system for a smooth main speaker to subwoofer transition Alternate High Level Connection The alternate method for making high level connections is to connect both the ICS Sub 24 and the main speakers directly to the amplifier This type of connection does not take advantage of the high pass filter provided by the High Level Outputs of the ICS Sub 24 Co
3. 24 Amplifier Receiver or Preamp Power Amp HIGH LEVEL IN FROM AMP PHASE 180 ALWAYS ON Connect the main speakers Toa directly to the system s Connect the main speakers to the High Level Outputs to take I advontage of the high pass filter in the ICS Sub 24 amp amplifier to run the main speakers full range 10 PLACEMENI Typically the ICS Sub 24 will produce the smoothest response when placed against a wall Placement in a corner will further enhance bass output allowing you to run operate the subwoofer at a lower power level Experiment with subwoofer placement while at the same time adjusting crossover frequency output level and phase See section on Fine Tuning Your Subwoofer below Choose a musical selection with a heavy and continuous bass line Play a short section several times until you have a firm impression of it in your mind Then try another location to see if It provides smoother or more balanced response Repeat this process until you are content with the bass response you are getting Strive for a smooth solid bass response that does not emphasize any part of the bass range Once a location for the subwoofer has been selected you may want to attach the supplied cabinet feet There are two side of the cabinet that have pre drilled pilot holes for the feet This enables you to use either a vertical or horizontal orientation Note Avoid placing the ICS Sub 24
4. ICS Sub 24 Powered Subwoofer Owner s Manual ICS Sub 24 SAFETY INSTRUCTIONS Warning To reduce the risk of fire or electric shock do i CAUTION T RISK OF ELECTRIC SHOCK DO NOT OPEN not expose this appliance to rain or moisture T The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons A The exclamation point within an equilateral triangle is intended to alert you to the presence of important operating and maintenance servicing instructions in the literature accompanying the appliance Read Instructions All the safety and operating instructions should be read before the appliance is operated Retain Instructions The safety and operating instruc tions should be retained for future reference Heed Warnings All warnings on the appliance and in the operating instructions should be adhered to Follow Instructions All operation and other instruc tions should be followed Water and Moisture The appliance should not be used near water for example near a bathtub washbowl kitchen sink laundry tub in a wet basement or near a swimming pool etc Carts and Stands The appliance should be used only with a cart or stand that is recommended by the manufacturer Wall or Ceiling
5. cabinet feet INTRODUCTION We designed the ICS Sub 24 for maximum output and In addition to powerful and sophisticated electronics performance for today s digital formats With bass and drivers the ICS Sub 24 offers outstanding flexibility extension to 20 Hz 6dB and output over 105 dB at an The cabinet has been designed to function in either a average listening position in a 3 000 cubic foot room horizontal or vertical orientation and front mounted the ICS Sub 24 meets the demanding specifications of gain control provides easy access for subwoofer level THX Ultra 2 adjustments THX INPUT Bypasses Crossover HIGH LEVEL IN FROM AMP D 80 H 70 Hz 100 Hz L e R L e R 50 Hz 150 Hz 4 0 Y N Y Oras AUTO ON HIGH LEVEL OUT TO MAIN SPEAKERS L R 180 Z S w OO Q N UN JN OFF 11 FUSE TYPE T5A 250V A RISK OF ELECTRIC SHOCK DO NOT OPEN Snell ICS Sub 24 POWERED SUBWOOFER FEATURES 1 Crossover Low Pass Filter Control This control sets the frequency of the low pass filter and is fully adjustable from 50 to 150Hz Bass sound below the selected setting are directed to the ICS Sub 24 amplifier and speaker 2 Low Level Inputs Use this input when your system has preamp outs and amplifier inputs Low Level High Pass Outputs When the low level inputs are used these outputs pro
6. close to a television or monitor There should be at least 8 inches 20cm between the two components If getting the best sound together with the physical constrains of the room require that the two units must be closer than that you can purchase a magnetic shielding kit from Snell Acoustics FINE TUNING YOUR SUBWOOFER Note If you are connecting the ICS Sub 24 to a THX receiver controller use the THX input See the THX Input section on page 6 This bypasses all the crossover circuits and level controls in the amplifier All audio controlling is done by the THX receiver controller Setting the Internal Crossover When using the standard Low Inputs or High Level inputs you will need to adjust the internal crossover to make the ICS Sub 24 sonically blend with the main speaker in the system If you are using line level inputs and returning the high pass filtered signal to the amplifier see the diagram on page 6 begin by setting the crossover at 100Hz Some rooms naturally overemphasize bass in this region creating an undesirable bump or boomy quality in the sound If this is the case with your room try turning the crossover down to 80Hz On the other hand some rooms have a natural tendency to swallow up the bass in the 100Hz region causing the sound to appear thin In rooms of this type try setting the crossover at 125Hz This may help to round out the overall sound If you are running your main speakers full ra
7. e Have a second person repeatedly switch the Phase Switch from one position to the other You will notice that one position will deliver stronger midbass sound This is the proper position for the Phase Switch If the midbass now seems too prominent compensate by slightly lowering the crossover frequency or the output level How To Care For Your Speakers gt Use a soft terry cloth towel slightly dampened with water glass cleaner or a diluted mild detergent The towel should be just damp enough to wipe the surface clean without leaving a trail of moisture Do not use abrasive cleaners or any cleaner containing chemicals harsher than those found in glass cleaner 11 2003 Snell Acoustics All Rights Reserved Specifications are subject to change without notice Covered by patents issued and or pending Part 542 1024 LIMITED WARRANTY During the warranty period Snell Acoustics will repair for the original owner any defect in materials or workmanship that occurs in normal use of the speaker system without charge for parts and labor The warranty period for all parts of the ICS Sub 24 except the amplifier is five 5 years The warranty period on the amplifier is one 1 year Your responsibilities are to use the product according to the instructions supplied to provide safe and secure transpor tation to an authorized Snell Acoustics service representative and to present proof of purchase from an authorized Snell deale
8. er supply or plug has been damaged gt Objects have fallen or liquid has been spilled into the appliance Pm The appliance has been exposed to rain gt The appliance does not appear to operate normally or exhibits a marked change in performance Pm The appliance has been dropped or the enclosure is damaged Servicing The user should not attempt to service the appliance beyond what is described in the operating instructions For all other servicing consult your dealer or contact Snell Acoustics SPECIFICATIONS Frequency Response 3dB 23 200Hz 20Hz at 6dB Amplifier Power 450 watts Crossover Low Pass for Subwoofer Variable from 50 to 150Hz Crossover High Pass for Line Out Fixed at 80Hz 12dB octave Bass Unit Dual 12 inch 305mm long throw cast chassis woofers Cabinet Construction Double wall 3 4 inch MDF Internal Double H bracing Grille Black cloth covered grille Controls Turn On switch with instant On and ten minute Off delay Phase Switch and Front mounted volume control Dimensions HxWxD feet installed 303 4 x 171 2 x 221 4 78 1cm x 44 45 x 56 51cm positioned vertically 191 4 x 29 x 221 4 78 1cm x 44 45 x 56 51cm positioned horizontally depth includes grille and amplifier fins feet account for 13 4 4 44cm of height Weight 116 Ibs 52 62kg Finish Black utility finish hand sanded hand painted Accessories 4
9. ng of the Crossover control See the Fine Tuning section of this manual for more information Subwoofer Output Connection Some electronics have monophonic subwoofer outputs If your system has this type of an output it can be connected to either of the low level inputs The benefit of using this type of connec tion instead of using the THX input is that it does not bypass the controls of the ICS Sub 24 You can still use the level control to adjust the output of the subwoofer Typically such outputs are low pass filtered so you should set the ICS Sub 24 crossover control to it s highest setting to ICS Sub 24 Amp CROSSOVER LOW LEVEL IN HIGH PASS OUT Amplifier Receiver or Preamp Power Amp THX PUT Bypasse rossover Either Input May Be Used minimize its effect If listening test show there is an excess of mid bass sound you may want to use a lower crossover control setting See the Fine Tuning Your Subwoofer section for more information High Level Connection If the electronics in your system does not have Preamp Output Power Amp Input connections the ICS Sub 24 can be connected via the speaker wiring using the High Level Connections There are two methods for making high level connections the ICS Sub 24 The 5 way binding posts on the ICS Sub 24 permit easy connection to banana plugs spade lugs and bare wire If you are connecting bare wires be sure to twist the wire strands into a neat bundle Be
10. nge set the crossover close to the bass cut off frequency of your main speakers See the specifications for your main speakers for information This will help achieve a smooth seamless blend between your speakers and the subwoofer Experiment until you are happy with the main speaker to subwoofer transition Bass Level Control The Bass Level control adjusts the volume of the ICS Sub 24 output The Level Control should be adjusted to achieve a good main speaker to subwoofer balance However there is significant interaction between the Crossover control and the Bass Level control This interaction affects the sound in the midbass range where the transition from the main speakers to the subwoofer occurs If you are hearing too much midbass adjust the crossover frequency down while increasing the bass level This decreases midbass output while increasing the amount of lower bass energy Conversely turning down the bass level while slightly increasing the crossover frequency will increase the ratio of mid bass to low bass sound The result will be a sound with a quick quality Experiment while listening to a variety of sources Adjust the ICS Sub 24 Crossover and Bass Level controls until you achieve a smooth and seamless blend with the main Speakers Setting the Phase The proper setting for the Phase Switch changes based upon the location of the speaker To determine the correct setting for your room use a source with a full and continuous bass lin
11. nsequently the main speakers will operate full range There are two connection methods Both methods are electrically equivalent Which one you use will depend largely on you physical set up of your room One method is to connect both the main speakers and the ICS Sub 24 directly to the amplifier The other method is to connect the amplifier to the main speakers and then run extension wires from the main speakers to the ICS Sub 24 Amplifier Receiver or Preamp Power Amp 180 ALWAYS ON AUTO ON HIGH LEVEL OUT TO MAIN SPEAKERS Amplifier Receiver or Preamp Power Amp HIGH LEVEL IN FROM AMP 0 PHASE 180 ALWAYS ON AUTO ON HIG _EVEL OUT TO MAIN SPE CONNECTING TWO ICS Sub 24 s You may wish to use two ICS Sub 24 s particularly if you are in a large room gt Double subwoofers may be wired with either speaker level or line level connections gt Be sure the Phase Switch is set the same on both units To connect two ICS Sub 24 s using line level inputs use Y connectors to daisy l ICS Sub 24 m CS Sub 24 chain the PREAMP OUT signal to the Amp Amp input of a second ICS Sub 24 R Amplifier Receiver or Preamp Power Amp THX INPUT THX INPUT Bypasses Crossover Bypasses Crossover AMP PREAMP To connect two ICS Sub 24 s using speaker level inputs use the HIGH LEVEL IN FROM AMP binding posts on one subwoofer to daisy chain to the second ICS Sub
12. op to the right side of the speaker We even veneer the inside of the cabinet so it won t warp or separate at the edges as the humidity changes CONNECTION Warning To reduce the risk of electric shock always switch off the subwoofer and the amplifier and or receiver when making connections to the subwoofer and speakers THX Input Use this input when the ICS Sub 24 is connected to a receiver or surround sound controller that has a built in THX control system This input bypasses ALL the crossover and control circuitry of the ICS Sub 24 Non THX Low Level Connection When connecting the ICS Sub 24 to electronics that does not have a THX control system use the low level also called line level connections whenever possible Even if you do not have a separate preamp and power amp many receivers and integrated amplifiers include Preamp Out and Amplifier In connectors THX Receiver ICS Sub 24 Amp LOW LEVEL IN HIGH PASS OUT CROSSOVER L R L R z K 0 Hz amp lt A me Y 8 my F gt THX INPUT Bypasses Crossover ICS Sub 24 Amp LOW LEVEL IN HIGH PASS OUT CROSSOVER Amplifier Receiver or Preamp Power Amp When using the low level connections the signal from the High Pass Outputs that is returned to your amplifier is high pass filtered to remove sound below 80Hz This is a non adjustable filter It is not affected by the setti
13. r in the form of your sales slip when requesting service Excluded from this warranty is damage that results from abuse misuse accidents shipping repairs or modifications by anyone other than an authorized Snell Acoustics service representative This warranty is void if the serial number has been removed or defaced This warranty gives you specific legal rights and you may also have other rights that vary from state to state If Service Seems Necessary Contact the dealer from whom you purchased the speaker system If that is not possible call us at 978 538 6262 or write to Snell Acoustics 300 Jubilee Drive PO Box 3717 Peabody MA 01961 3717 We will promptly advise you of what action to take If it is necessary to return your speaker system to the factory please ship it prepaid in the original factory packaging Please note that Snell Acoustics will not be held liable for shipping damage due to improper packaging After it has been repaired we will return it freight prepaid in the U S or Canada Snell 300 Jubilee Drive POB 3717 Peabody MA 01961 3717 phone 978 538 6262 fax 978 538 6266 Manufactured under license from Lucasfilm Ltd email info snellacoustics com Lucasfilm and THX are registered trademarks of Lucasfilm Ltd web www snellacoustics com
14. vide the signal that goes to the power amplifier in the system The signal from these outputs is high pass filtered to remove bass sound below 80 Hz 4 THX Input This input is for use with receivers or surround sound controllers that have built in THX control systems This input bypasses the low pass filter and ALL the crossover controls of the ICS Sub 24 5 Speaker Level Inputs The ICS Sub 24 also has high level inputs that can be used when preamp outputs power amp inputs are not available The 5 way gold plated terminals accept spade lugs to 5 16 inch pins banana plugs and up to 12 gauge bare wire When main speakers are connected to the speaker level 6 Speaker Level Outputs These outputs provide signals for the main speakers when the speaker level inputs are used The signal from this output is high pass filtered to remove bass informa tion below 80 Hz Bass Level Control The Bass Level control adjusts the sound level output of the ICS Sub 24 It is located on the front of the cabinet behind the grille To access the control grasp the top and bottom edges of the grill and pull it straight off the front of the cabinet A typical setting for the control is around the 12 o clock position Bass Drivers The ICS Sub 24 uses two 12 inch 305 mm custom built bass unit with dual spiders a coated paper cone with butyl surround and a die cast aluminum chassis The driver has a front mounted heat sink that draws heat a
15. way from the voice coil increasing power capacity 9 Phase Switch Determines whether the subwoofer adds or cancels in the crossover region The proper setting changes based upon the current location of the speaker Turn On Mode This switch controls the automatic power up function When the switch is set to Auto On the amplifier will power up when it senses an input signal If no input signal is present the amplifier switches to low power standby mode after 8 10 minutes The LED next to the Power switch lights green when the amplifier is on and yellow when it is in standby mode Put the switch in the Always On position to defeat the automatic power down feature 11 Power Switch The main power switch is located next to the power cord socket Push in the top side of the switch to turn on the main power to the system Push in the bottom side to turn off the main power Usually the only time the main power switch should be turned off is when the sub woofer will not be used for an extended period of time such as when you are away on a vacation 12 Handmade Cabinets Our cabinet department hand assembles each unit and then hand sands each several times The result is a cabinet of exceptional workmanship with sharp corners and smooth sides Veneers We use premium book matched veneers chosen for grain consistency and aesthetics Our cabinet shop sequences the veneer maintaining a match from the left Side across the t
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