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Hello i just bought a pair of alpine spr-50 speakers, a pair of spr-69 speakers, and a CDE-HD137BT head unit. I want to put one or maybe two subwoofers in. What would i need to buy to put the subs in or can i just hook them up directly?

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  • 256 Answers

It will sound better buy useing a external amp to power the subs,

Posted on Dec 05, 2012

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Posted on Jan 02, 2017

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techman
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SOURCE: hissing in speaker

I would contact http://www.simplyspeakers.com amd see if theres a repair thats feasable to do with this speaker and tell them what you got and what you wanna do and they will assist you in getting the speaker fixed or replaced with what you want and for the price you want. Good Luck

Posted on May 12, 2006

DiMiS
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SOURCE: Woofer making horrible noise! HELP!

Think as an expert... Probably from my experience repairing woofers etc... the cone (1) or the spider (2) isn't well glued onto the woofer skeleton(or both???) The woofer cone must be absolutely centered or else you will get those clicks in low frequencies(you also get them in higher frequencies but you can't hear them!) I must say that it is very difficult to repair a woofer by your own. I suggest to return it back where you bought it and take another one (i suppose that you have a guarantee ha?).

Posted on Aug 10, 2007

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SOURCE: Rampage BA-100 200W amplified subwoofer

Actually. I don't think you have to wire a remote switch from the radio to the amp on this product. This powered subwoofer supposedly has automatic signal sensing turn-on circuitry. I have the same problem. So I think I'll try to just hook up the power (to the battery), ground and the + / - speaker wires to one of the back speakers in the car and see if that works.

Posted on Mar 05, 2008

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SOURCE: subwoofers not hitting as hard as it should.

First thing when your care is idleing turn you system up and watch your rpms. Is it going all over the place when you turn it up?If so your altenator isn't putting out enough power.Might be able to fix that problem with another fadar cap. You should buy the digital read out for your cap to see how bad its draws power.They have ones that will mount to the top of your fadar cap.You can all so get a bigger altenator.Also check your ground clean it along with other connection batter,both sides of you fuse and any other connection,bass will loose all bolts/screws over time because of the bass,even to sub have had one work its way off in a year once.

Posted on Mar 03, 2009

  • 2 Answers

SOURCE: Has my subwoofer been blown?

hook ithe sub up to a 9volt battery and see if the woofer moves... You will not dammage the suub testing it this way.

Posted on Mar 25, 2009

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1 Answer

I have a alpine CDE 152 head unit in my car and just put in alpine SPR 60 coaxial speakers in the rear. thought the head unit would be enough and want more punch from the base.. do i need an amp or i


get the alpine ktp445 mini amp ,it should be compatible (check your manual for your HU it will say ) its a plug and play install and you will hear a great improvement as I did and still got mine with the alpine cda 117 .

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Spr-69 crackling


It may be a bad voice coil. It would make that type noise. If the cone isn't cracked its the coil.

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Alpine 9845 cde head unit car stereo i Cannot figure out how to access the Fader not the balance,altho i havent seen that function either. ive been to the alpine site and they dont even mention it. im sure...


Press the Rotary encoder (CDE-9845/CDE-9843
only) or press MODE (CDE-9841 only) repeatedly
to choose the desired mode.
Each press changes the modes as follows:
BASS → TREBLE → SUBWOOFER* → BALANCE → FADER
→ DEFEAT → VOLUME → BASS
BASS: -7 ~ +10
TREBLE: -7 ~ +7
Subwoofer : 0 ~ +15
Balance : L15 ~ R15
Fader : R15 ~ F15
Defeat : ON/OFF
Volume : 0 ~ 35

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Subwoofer for alpine cde-9843


In short, no.

The CDE-9843 cannot drive a sub of the type you mention without an amp, but you can fit a sub with it's own built-in amp.

As standard, the head unit has a basic in-built amp supplying 4 x 16w RMS at 4ohms but there is the facility via the unit's own menu to turn off the in built amp and use the output sockets as a pre-amp feed, but in reality if you want to drive an amp you'd be better off to start with a more highly specified head unit to begin with, even the next model up, the CDE-9845 is better suited as there are pre-outs for front and rear speakers.

User instructions are available from here.

If my reply has been of assistance then please return the favour by rating my answer.

Nov 09, 2009 | Alpine CDE-9841 CD Player

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Can an equalizer cause hissing


The more ground the better,or check the RCA cables.or to see if the power wire is running any cables that power the inter.

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I am getting a DC error on my alpine cde-102 head


Hello christo12385,

The DC error is most likely caused by a shorted or grounded speaker wire. Check all speaker wires, correct the problem, and then go into the sound setup settings and reset the POWER IC to ON.

Hope this helps.

Sep 25, 2009 | Alpine Car Audio & Video

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