Earthquake Sound CP-8 User's Manual
Contents
1. d Figure 6 Four 4 CP 8 Arrangement More bass in the right places Figure 7 Corner Loading Placement Ideally place the seating about 2 3 of the room away from the television www earthquakesound com CP 8 Installation Manual SUBWOOFER Figure 8 Two 2 CP 8 Arrangements Seating Based Placing the two subwoofers on the horizontal axis of the seating area Wh Lil i m IL SUBWOOFER LFE Figure 9 Two 2 CP 8 Arrangements Seating Based Placing the two subwoofers on the vertical axis of the seating area Trouble Shooting the CP 8 LED DOES NOT LIGHT ON i Check for the appropriate AC voltage in power outlet 2 Inspect the power cable Never use one that has been altered with 3 Inspect the fuse see Fig 1H on page 2 The fuse holder slides outward Simply use a flat screw driver to pry it open Be sure to use the appropriate fuse size LED TURNS ON BUT STAYS RED OR NO OUTPUT 1 If LED does not turn green Unplug the power for 5 seconds Position the power switch Fig 1A on page 2 to ON and connect the power again Turn the system on and check if the LED status change to green as it should do so when the amplifier is properly working If LED is green but there is no output Turn the power switch Fig 1A on page 2 to OFF position You should see the LED turn red Set the power switch to the AUTO center position and turn the audio source on If signal2. high enough so that the drivers do not fire directly at your ears when you re sitting down As a rule of thumb place them at ear level while you are in standing position Most people tend to over amplify the rear speakers This is not recommended as it can over power the front speakers Most of the time the rear speakers are relatively quite They simply come on when there are special effects Since every room has different acoustics you might need to experiment with the speakers aiming You may get good results by pointing them at the ceiling or toward the rear corners of the room If no side or rear walls are available for mounting your speakers try placing a pair of traditional bookshelf speakers on speaker stands slightly behind and to the sides of your listening position Avoid aiming them directly at your listening position You may also try any of our Sweet spot IQ Series and Image in ceiling speakers Surround speaker placement which is ideal for home theater is not necessarily perfect for multichannel music listening where a precisely focused rear sound stage is best If both listening types are important to you then you can position your surround speakers for acompromise between the two S b A A P gt CENTER oS 0 d AKG Ve Ay SUBWOOFER Figure 3 Speaker Placement in 5 1 System Position the rear left and right speakers 90 110 across from the primary listening seating spot and at about 6 feet from the flo
3. s sound level Always start at MIN position and slowly increase the volume to reach the desired subwoofer sound level D XOVER FILTER This 12dB Oct variable crossover filter HIGH LEVEL GUTEUT HIGH LEVEL INPUT is designed to control the subwoofer s cut off frequency range 40Hz to 130HZ E LINE OUT RCA High pass filtered RCA output jacks with left and right line output signals The line out RCAs are not functional when the line in signal is derived from a sub filtered output of an external processor DIGITA F LINE IN RCA Input jacks to accept up to 2 3 Volts of audio input signal mono and stereo POWERED SUBWOOFER x HIGH LEVEL OUTPUT High pass filtered output terminals designed to power up stereo satellite speakers WARNING 110 120VAC 60Hz 220 240VAX 50Hz O 110 120V E 220 240V O TTA rus anna FART HCOARE Lt Earthquake Sound 2727 McCone Avenue Hayward CA 94545 USA www earthquakesound com H MAIN POWER FUSE Always replace protection fuse with one with similar value An extra fuse is provided for your convenience 1 POWER INPUT SELECTOR The CP 8 operates in 115V or 230V environment Simply slide the selector to the required power input setting J HIGH LEVEL INPUT Clamp style input terminal accepts high level audio input from main or front system Q Q speakers up to 10 Volts Figure 1 Key Connection and Controls www earth
4. were present at the RCA you should see the LED status light turns green and the subwoofer will turn on and produce output If LED remains red then the problem is at the source or the audio cable a Trouble shoot the RCA cables by temporarily connecting them to the stereo left and or right out of the source unit If the cables are good the subwoofer must be heard b If the cables are okay but no sub out from receiver processor check the subwoofer settings at the source Make sure ON or Ultra is selected review the owner s manual of the source unit for setting up the sub output HUM NOISE Unplug the RCAcables and check for noise a If the noise goes away then the problem is at the source C d Make sure that all units chassis are grounded together 18 22 AWG wire with the exception to our subwoofer Grounding the loop isolator on the RCA side and the cheater plug on the AC supply side may be a temporary quick solution for such problem However we always recommend using solution a Avoid using line conditioner or surge protector as it may damage the subwoofer s internal circuitry If the noise is still present even when the RCA cables are unplugged try changing the AC outlet If the problem still occurs at this point contact an Earthquake technician For more technical support please contact us by Phone 1 800 576 7944 Email tech earthquakesound com www earthquakesound com P
5. AM AYVAAG CE Tae ie a iw D Sound That Will Move You Earthquake Sound reserves the right to amend details of the specifications without notice Copyright Earthquake Sound Corporation Earthquake Sound Corporation 2727 McCone Avenue Hayward CA 94545 Phone 510 732 1000 Fax 510 732 1095
6. Crossover Slope 12dB per Octave THD 0 001 50 Hz Input Impedance 47 000 ohms Input Sensitivity 50mV to 2 3V Power Supply 115V 230V 50Hz 60Hz Fuse Rating 1 Amp SUBWOOFER 300 watts 8 subwoofer 2 high temperature voice coil Durable pressed paper cone Long Excursion santoprene surround 480z high density magnet 89dB 1W 1M FS 38Hz Qts 0 516 SYSTEM Dimensions H feet included x W x D 7 177 8mm x 12 304 8mm x 24 601mm Weight 24 58 Ibs 11 15 kgs For more technical support please contact us by Phone 1 800 576 7944 Email tech earthquakesound com www earthquakesound com CP 3 Installation Manual The ABC of Home Theater SPEAKER ARRANGEMENT Home theater performance depends very much so on product performance room size and speaker placement Reading this booklet following your priorities and these procedures will pay off with a big improvement to sound quality and sonic performance Basics of speaker placement can help you make the smartest choice for your specific room There is no magic bullet in home theater which is why this is called custom home theater Every speaker has different sonic characteristics every room has different acoustic properties everyone s ears hear sound a little differently and your left ear has a different sensitivity than your right ear So in the end you may use this booklet as a starting guideline However whe
7. HET Sound That Will Move You CouchPotato 300 Watt Digital Powered Subwoofer User s Manual CP 3 Installation Manual Dear Valued Customer On behalf of everyone here at Earthquake Sound Corporation match typical satellite speaker systems to enhance the over all thank you for choosing the Couch Potato model no CP 8 by sound quality and performance of your system Earthquake The slim enclosure design allows the user to place the CP 8 The CP 8 is a self powered subwoofer that allows the user to under the sofa behind it or under the bed Now you can have deliver massive fast bass into their seating position By placing massive bass while using unused space the subwoofer close to you the bass is faster more powerful and it also carries massive sub harmonic vibrations with it Enjoy With an integral high power 300 Watts MAX amplifier the CP 8 subwoofer provides for an RCA input high level input with a crossed high level output CP 8 high output level is designed to Let s get familiar with Your Couch Potato CP 8 A POWER SWITCH Off AUTO On Complete with light indicator When switched to AUTO mode the CP 8 will turn off after 15 minutes if no audio signal is detected VOLUME CROSSOVER PHASE SHIFT 0 to 180 subwoofer phase shift switch y PHASE p r 80Hz e 120Hz J e oM jo er AYTO ON O e POWER O ome 40Hz 180Hz C VOLUME CONTROL Manual adjustment of the subwoofer
8. n it comes to actually setting up your speaker system let your own ears be the judge CENTER CHANNELSPEAKER PLACEMENT This should be the first speaker you place in your home theater room The job of a center channel is to anchor dialogue and other on screen sounds to the screen Thus its position depends upon where you put your TV Place your center channel directly above or below your TV centered make sure the speaker s front edge is precisely aligned with the front edge of your TV screen This helps in reducing distortion caused by sound reflecting and diffracting off the TV s cabinet Figure 2 Front Speaker Placement If possible the height of the center channel speakers should be as high as your ears in a sitting position as illustrated above in Figure 2 FRONT LEFT amp RIGHT SPEAKERS PLACEMENT In a home theater system front speakers are responsible for movies sound tracks and dynamic actions The front speakers need to sync the video event with the audio For instance when there is a moving vehicle from the left to the right of the screen the sound should travel from the left front soeaker to the right front speaker In a two channel stereo system the front speakers are responsible for producing all of the sound staging imaging and depth of field Placing the speakers too close to each other will compromise the stage while placing them too far from each other will break the images Front speakers
9. or nt WZ A RO K CENTER amp es 30 GPE REAR CENTER O o Figure 4 Speaker Placement in 6 1 System Position the rear center speakers behind from the primary listening seating spot and at about 6 feet from the floor Placing the CP 8 subwoofer close to the listening seating spot delivers more vibrations and subharmonics 90 110 WIR 90 110 SURROUND SURROUND LEFT 135 SUBWOOFER Figure 5 Speaker Placement in 7 1 System Position the left and right surround speakers at 90 angle and the left and right rear speakers at 135 150 angle with respect of the television and about 6 feet from the floor www earthquakesound com CP 8 Installation Manual SUBWOOFER PLACEMENTS A powered subwoofer delivers crucial impact in a home theater system although it is one of the least demanding speakers to position Since low bass frequencies are omni directional you can usually place your subwoofer just about anywhere in your home theater room and still get good results Placing your subwoofer near a wall will generally produce more output due to wall reflection Moreover if you place your subwoofer in the corner the output is maximized even moire Keep in mind that even though the bass increases as you place the sub near a wall or corner the quality of bass may be slightly boomier and less controlled Thus aim for a spot where you get a compromise between quality and quantity of ba
10. peaker to the subwoofer and you re up and running Note The high level input for satellite soeakers is fitted with a high pass filter 70Hz It is only powered when the main or front speaker signals are driven into the HIGH LEVEL INPUT Fig 1J These terminals are marked with red and black to indicate the amp respectively 2 Adjust the subwoofer low pass filter cut off to near 100Hz at first Slowly bring down the crossing point until you eliminate any emanating vocals from the subwoofer An ideal crossing pint range from 55 to 70Hz 3 In case the CP 8 becomes out of phase with the satellite speaker flip the phase switch to correct the problem maximum bass is only achieved when the sub is in phase with rest of your speakers D NOTE DO NOT USE HIGH LEVEL AND RCA INPUTS AT THE SAME TIME Cautions Do not place the subwoofer in an environment exposed to dust excessive moisture or heat Direct exposure to sun light will over time deteriorate the enclosure finish and may cause the amplifier to overheat To prevent electrical shock never open the subwoofer cabinet before disconnecting the power cord from the amplifier s main socket In the event of a blown fuse replace it with a 1 ampere fuse only Over fusing voids the warranty and will destroy the amplifier Features amp Specifications AMPLIFIER Power Output 300 Watts Frequency Response 20Hz 180Hz Crossover Frequency 40Hz 130Hz
11. quakesound com CP 3 Installation Manual Operating amp Controlling Your CP 8 Before you make any connections to power up your Couch Potato please double check the following 1 The input power switch 110 AC or 220 AC based on your local power 2 Please make sure that the gain volume knob is setto minimum 3 Make sure that the power switch is set to OFF 4 The crossover should be set to 10 o clock position Connecting Your CP 8 LOW LEVELINPUT CONNECTION 1 Locate the LINE INRCAon the CP 8 amplifier Fig 1F 2 Connect the CP 8 to the signal source i e AV receiver There is no need to have both RCAs to the signal source since the subwoofer is often operated in mono signal If the receiver does not have adequate signal level then you may want to use both RCA inputs in order to obtain higher signal level 3 If needed connect the LINE OUT RCA Fig 1E to another amplifier to drive satellite soeakers front or rear The LINE OUT RCA has high pass filtered signal at about 70Hz 5dB Octave cut off HIGH LEVELINPUT CONNECTION The CP 8 has a HIGH LEVEL INPUT connection Fig 1J For the best performance you might consider RCA connection if it is available on your source If not then high level input will do 1 Since bass is mono you can connect the high level input of any of the front speakers to your CP 8 For ease of wiring pick the speaker that is closest to the subwoofer Simply piggy back a wire from the s
12. should be placed at an equal distance from the TV and the primary listening spot Sweet spot Together with the center channel speaker they should form a slight arc with all three speakers at exactly the same distance from where you sit as illustrated in Figure 2 To make life even easier the distance between the front center channel speaker to the primary seat should be equal to the distance between the two front left and right speakers SPEAKER ELEVATION The tweeters from all three front soeakers should have the same elevation as your ears while seated Any deviation will work but it may reduce the performance Make sure that there are no solid objects like furniture blocking the pathway of the sound traveling to your listening location www earthquakesound com CP 8 Installation Manual SURROUND SPEAKER PLACEMENTS Surround speakers are there to envelop three dimensional sound that places you in the middle of the action Ideally your primary pair of surround speakers should be placed to the left and right of your listening position either in line with it or just behind it They should form a 90 110 angle with respect to your television In a 6 1 channel or 7 1 channel system with more than two surround speakers or if side placement is not available for your surrounds in a standard 5 1 channel setup consider placement behind your listening position facing the front of the room Surround speakers should be placed
13. ss One cool technique for placing for your subwoofer is to put your sub in your listening spot i e on your sofa play some music move around the room and listen Be sure that you bend down closer to the floor as you walk as this will lead to more accuracy as to what you will get You will probably notice that the bass sounds a little bit different as you move around the room from one location to another When you reach a spot where the bass sounds best that may be the location where you want to place the subwoofer After finding the best subwoofer placement you will need to set the phase Earthquake subwoofers are equipped with 0 180 phase control switch Simply play one of your favorite songs and switch the phase control back and forth You may need assistance from a friend or family member Choose the setting that produces the most bass while all your speakers are playing Subwoofers have slower responses compared to the rest of the speaker systems This is strictly Physics The CP 8 is designed to address this issue By making the CP 8 slim in profile it opens up more placement options i e under or behind the sofa vertically standing against the wall in the corner of the room etc to offset the response delay Figure 6 through 9 illustrate the bass response in the room when placing the CP 8 in different location of the room Li amp SUBWOOFER LFE SUBWOOFER SUBWOOFER LFE L LFE R L SUBWOOFER LFE
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