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  1. #1

    Default New Door Speakers!

    I put in some new front door speakers today on my 2000 silverado 1500 series ext cab and what a difference over factory! They sound nice up to a point and then become extremely distorted and it sounds like someone is clapping in your ears during the loud bass notes.

    Now, they are Alpine SPR-17S and are rated for 110 watts RMS each, I'm currently pushing 100 watts RMS to each with a Pioneer GM-X374 amplifier in 2 channel bridged mode. I definitely should not be overpowering them so what the crap is going on?!

    I'm pulling the backseat off tomorrow to mess with the amp and hopefully fix this. I assume things to play with are gain controls and the passover? I figure since within a week or two I wll have some subs in that I should turn on the High Frequency Filter (only send higher frequencies to door) to keep the door speakers from trying to hit those low notes and blow themselves to poo?
    2000 Silverado ext cab1500 Z71
    Have:
    -K&N
    -SPR-17S Fronts with 100RMS watts to each
    -Billet Grill
    -Bedliner
    -Catback Flowmaster Exhaust
    -CDA-9884 Head unit w/ iPod hookup
    -2 KFC-W3011 subs (seperate boxes 1 cu ft air space each) powered by a KAC-9104D 900 watt RMS monoblock amp
    -SPR-57C rear speakers
    -Door dings
    -Leveling kit (2.5" torsion keys)

    Want:
    -6" Suspension Lift
    -35" tires (maybe 38s)
    -HID/projector headlights
    -Headers
    -Programmer/Tuner

  2. #2

    Default

    I hate shooting around in the dark so I guess I'll just follow up with this incase anyone else has similar problems in the future. I turned on the high pass filter to prevent the speakers from trying to hit the low bass notes which solved the distortion when I cranked up the volume. I also ran rca patch cables from the head unit for a sub so I didn't have to tear everything apart again once I put another amp and subs in, I plugged these patch cables into the third and fourth channel of the amplifier (which I was attempting to run in bridged 2 channel mode) which little did I know was preventing it from running in bridged mode! I unplugged these and immediately my speakers doubled in loudness (as it switched in 2 channel mode.) I actually ended up turning up the gain controls and I swear to god these speakers are the BEST investment I have made thus far. They maintain clarity up to an eardrum popping level and I would recommend a set of these to anyone.

  3. #3
    Jr. Mechanic
    Join Date
    Nov 2008
    Location
    Northern Colorado
    Posts
    75

    Default

    I just put some alpine premier speakers in my front doors because the drivers side was blown and they sound great. Can't wait to do some more!
    My first Chevy :great:
    2005 Silverado 1500 ECSB Z71 5.3L:
    3'' Aero Turbine exhaust with side dump
    6000k HID's Highs, lows and fogs with H-4 mod
    Rough Country Full Leveling Kit
    285/70/17 Firestone Destination A/T's
    Dick Cepek DC1
    EFI Live
    more to come..

  4. #4
    Legend cascott325's Avatar
    Join Date
    Aug 2008
    Location
    Lawrenceburg, Kentucky
    Posts
    1,709

    Default

    i have the same set you have, but i dont have them on an amp which i need to do. any suggestions?
    2000 silverado with a 5.3l v8, shorty headers, upgraded plugs, 10 mil wires, magnaflow high flow cats, flowmaster 80 series muffler(2 in 2 out) w/ 18 inch stainless silverline tips. i have a k&n CIA. its a 4x4 z71 offroad package. Ls model.
    extended cab 160k miles, truxedo low profile bed cover, diablo sport predator tuner.
    reman tranny @ 130k miles
    Chris

  5. #5

    Default

    Sounds convincing. The front speakers in my truck every time when there's bass sounds like it's blown. But when it's really cold in my truck it doesn't do it? Weird.
    www.youtube.com/ippielb
    2002 Chevrolet Silverado 1500 z71 1985 Chevrolet Silverado k10 2006 Chevrolet Silverado 2500hd 6.6l LLY Duramax
    6.5" BDS Suspension Lift Edelbrock Carb & Polished Intake Manifold & Valve Covers NAPC Race Transmission & NAPC Built Transfer Case
    EFI Live Comp Cam and Valvetrain Snow Performance Methanol Injection
    35" Toyo Open Country Mud Terrain on 18" Ion Alloy 179's Headman Long Tube Headers and True Dual Exhaust FASS 150gph Titanium Series Pump
    AirAid Cold Air Intake with K&N Dry Filter & AirAid PowerAid Throttle Body Spacer 2" Suspension Lift 33x12.50r15 Tires EFI Live & AFE Stage 2 Intake
    Pacesetter Long Tube Headers with Cats Gone True Dual Exhaust FlowPro 3.73 Gears Yukon Grizzly Locker with Mag-Hytec Cover & Traction Bars
    NGK Iridium Tips & MSD Ignition Plug Wires Baja Spare Tire Holder 33x13.5 Hankook rt03 18" XD Rims
    Innovate LC-1 Wideband o2 Sensor x2 HID's all around LED taillights and 3rd brake light
    BDS Dual Steering Stabilizers Pioneer Double-DIN Touchscreen Navigation with Two 10" Subs under rear seat
    Electric Fan Autometer Pressure, Boost, and Pyro Gauges
    4.56 Gears Airlift Air Bag Suspension

  6. #6

    Default

    Yea I think it's quite a sound investment (no pun intended..) Dealercostcaraudio has more than taken care of me and I believe they have the best price for those speakers as it stands. I had them price match some kenwood subs and it took them almost 10 days to ship them out (the door speakers got to me in two days), I sent them an email complaining and got a gift certificate for 10 dollars off my next order.

    Only recommendations I have are make absolutely sure you have that high pass filter on so those little 6.5 inch speakers aren't trying to reproduce sounds intended for 10 or 12 inch subwoofers. And get as close to 110 RMS watts (@ 4 ohms) to each speaker as you can, because they can handle it for darn sure.

  7. #7
    Sr. Apprentice kaiah723's Avatar
    Join Date
    Jan 2009
    Location
    Bridgeport, CT
    Posts
    63

    Default

    Quote Originally Posted by blueZ71 View Post
    I put in some new front door speakers today on my 2000 silverado 1500 series ext cab and what a difference over factory! They sound nice up to a point and then become extremely distorted and it sounds like someone is clapping in your ears during the loud bass notes.

    Now, they are Alpine SPR-17S and are rated for 110 watts RMS each, I'm currently pushing 100 watts RMS to each with a Pioneer GM-X374 amplifier in 2 channel bridged mode. I definitely should not be overpowering them so what the crap is going on?!

    I'm pulling the backseat off tomorrow to mess with the amp and hopefully fix this. I assume things to play with are gain controls and the passover? I figure since within a week or two I wll have some subs in that I should turn on the High Frequency Filter (only send higher frequencies to door) to keep the door speakers from trying to hit those low notes and blow themselves to poo?
    make sure the polarities arent crossed, that could cause ur problem. you can also blow a speaker from underpowering it. if the polarities aren't crossed u have to just play with the gain and high low pass settings on the amp. that should fix the problem. for door speakers i recomend you keep as much bass out of them as possible. if u want alot of bass you need a sub.
    2009 cobalt ss, imperial blu metallic, lsd, dejon powerhouse intake, Dejon bpv spring upgrade, Trifecta tune, clutchmasters aluminum flywheel, clutchmasters stage 1 clutch, 20% tints,

    2008 avalanche ltz, imperial blue metalic, k&n cold air intake, Gibson cat back duel exhaust

  8. #8

    Default

    Glad to see you got it all sorted out. I need to replace the speakers in my 'burb, the fronts are blown and the rears can't keep up with the subs. And I listen to country!
    Scott

    ΜΟΛΩΝ ΛΑΒΕ

    '94 Chevy Suburban K1500
    3" exhaust w/ aero turbine non-baffled muffler
    CFM Technologies TB spacer
    CB w/ 44" whip antenna


  9. #9

    Default

    In my experience I have always had my amp set on full range. If you keep it on high pass you are sending a higher freq. than what the woofer of the 6.5" can handle and over time it will ruin the speaker. Good Luck
    2006 Silverado Crew Cab, stock for now.
    Plans on lowering and stereo, rims

  10. #10

    Default

    Ha it's funny kaiah723 and SQSilverado have almost opposite recommendations on the sending of low bass frequencies to door speakers.. I don't mean to contradict or call out anyone but in my search for the solution I actually called alpine tech support because I was hearing all that distortion when I turned them up. According to the tech support rep, alpine recommends turning on the high pass filter as 6.5" speakers aren't designed to displace large amounts of air (which is what bass is) and attempting to will eventually blow out the outer surrounds of the speaker. The tech basicaly said why would amplifiers have a low or high pass filter feature built in if they were not meant to be used? Low frequencies = subwoofers and high frequencies = tweeters, anything inbetween = door speakers

    kaiah723 I'm pretty sure I don't have the polarities crossed as that basicaly makes the speakers counteract each other. One pushes out while the other pushes in if the polarites are crossed, causing general quiteness as no matter how loud you turn up the speakers the soundwaves just cancel each other out bc one speaker produces the opposite soundwaves of the other. And I'm definitely not underpowering them.. Ive only got 10 RMS watts below the max.

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