Question about MA Audio HK802SX Car Audio Amplifier

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Rca jacks input

My amplifier is only 2 years old and the rca input on amplifier is not responding to my head unit rca jacks. it just stop playing sound to my subwoofers. ive never had any problems with the amplifier before and i really need some quick advice for this issue.

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1 Answer

You need the speciall conector becous its a little problem your conections

Posted on Jul 04, 2007

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Posted on Jan 02, 2017

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1 Answer

How do I connect my CD Player, Tape Deck and Tuner to the SU 300 Technics Amplifier


hi,
For connecting these to your amplifier you need 4 Stereo RCA Cable.
1.Connection for cd:
Take one of the RCA cable connect the one end (red/white) jack to the line out of your cd and connect the other end (red/white) to the CD input of Your amplifier.
2. Connecting the tunner:
Take one of the RCA cable and connect the one end (red/white) jack to the line output of you Tuner and connect the other end (red/white) to the TUNER input of your amplifier.
3. Connectiong the tape deck:
Now you have two RCA cable. Take one of the RCA cable and connect the one end (red/white) jacks to the PLAY out of the Tape deck and connect the other end (red/white) to the TAPE 1 play input of your amplifier.
Now connect the last RCA cable. Connect the one end (red/white) jack to the record input of the TAPE deck And connect the other end (red/white) to the TAPE 1 Record input of your amplifier.(this connection will help you to record to tape from cd or tuner. if you are not interested in recording then you can avoid this connection.)

Now you can select these three items from the frond plannel control switch of the amplifier.
ok

Jul 28, 2011 | NAD 218THX 2-Channel Amplifier

1 Answer

I have a RZC 298W RCA FM/AM tuner/stereo amplifier that I cant find anywhere. It works ok, except its fuzzy. I'm Just curious about schematics and what year it is. it looks like its at least 40 years old....


You could contact a tv repair shop, many shops have schematics that go back many years. You say the sound is fuzzy, is this fuzzy sound when your playing the radio or when you play something throgh the amplifer? If its fuzzy with any source the you might have a bad speaker or speakers. you need to be more discriptive of the fuzzy sound you describe. also. if this unit has a head phone jack, (which I doubt if its 40 years old). you could plug in some head phone and see if the sound is clear there, if so then you know its most likely the speakers.

Mar 14, 2011 | RCA Audio Players & Recorders

1 Answer

CD input cuts out intermittently


Can be that the CD disc is jumping on vibration, the optical head is defective and not reading the tracks or if the line to the amplifier is having a loose connection in the wires or within the RCA jack socket.
Play Cd when car is in stop , if in motion check the wiring and CD for errros.
if interuption always from the disc then the optical head can be faulty

Sep 16, 2010 | NAD C162 Amplifier

1 Answer

How can i test my rca output jacks with a test light? pioneer deh p3100ub. hooked up spkr, nothing. tried one rca plug to white(lt) and then red(rt). Unit has 4 rca jacks, 2 for subwfr and 2 for front...


:) the rca jacks have to be connected to an amplifier,, their signal is too lay to even light a bulb.. you have to connect it to a car amplifier and then from the amplifier to the speakers..

Just so you'd know,, once your deck plays and you hear music on your speakers through your normal speaker wires,, RCA jacks work..

Ok you have 4 jacks,, 2 subs and 2 front.. These should connect to a preamp,, which takes 4 inputs and allows you to equalize or adjust how the music should sound,, now from the pre-amp,, it runs to an amplifier,, thats powers the subs and another that powers the speakers.. Some amps have 4 inputs so you can use one amp for your subs mids and heights..

for example a basic music system is

1 cd player
1 pre amp
1 amplifier (4 inputs, 4 channel out)

you bridge 1+2 and connect this to 1 12" double coil sub woofer

the next 2 connect to 2 mid speakers example "rockford or ev 5 / 8 " and 2 tweeters for heights..

Thats a kicking tricked out basic car audio system,,,

Hope that helps you understand how it works..


Mar 12, 2010 | Pioneer DEH P3100UB Car CD/ MP3 Player

1 Answer

Can i connect ipod adaptor to rca output jacks?


With out an input jack you cannot connect straight to your head unit. The RCA out puts only send a signal out. Your best bet is use an FM transmitter for your Ipod. The sound wont be as good but I can't think of another way with buying a new head unit.

Jun 05, 2009 | Clarion M255 AM/FM Marine CD Player

2 Answers

Protect Mode with RCA's


It sounds like you have some DC voltage on the RCA input.

You need to figure out if the problem is coming from the head unit or if it is in the amplifier.

If you have a voltage meter, you can use it to find out very quickly.

Set the meter for DC and for a max level of more than 12 volts. Most meters I use have a 30 volt level. That would be a good setting.

Take the black lead and make sure it is grounded to the chassis of the car or to the ground of the power terminal, be careful and make sure it does not touch anything else.

With the RCA cable disconnected put the red lead on the inner part of the RCA cable and see if there is any DC voltage and then check the ground or outer part of the cable. Do the same for the other channel as well.

It should be very close to zero volts. A couple of millivolts is fine to. Any voltage here will cause the amplifier to go into protect mode, which is what is happening to you. You will then need to have the head unit serviced.

If you have a Pioneer head unit, I have seen many of them with an open ground fuse for the RCA jack. That fuse is a surface mounted fuse and is very small and hard to locate on the main board of the radio. If you do have a Pioneer head unit the voltage may seem OK, but you will have an open ground, but that normally does not put the amp into protect. It makes the audio sound very weak and you would have a loud hum. I can help you with that if it turns out to be the problem.

If the voltage on both the RCA leads is OK, then you need to check the amplifier.

You can put the meter lead on the ground of the RCA jack on the amplifier, if you have anything abnormal there, you have a problem in the amplifier. Be careful checking this because you can easily touch the lead to the chassis of the amplifier at the same time as the RCA ground. Most of the time, if yu have a problem in the amplifier like the one you are having, this check of the RCA ground will result in some DC voltage on it. If it still checks OK, then put the lead into the RCA ground and check the positive part of it. You may need to move the lead around a little to get it to touch the metal inside, it is on the bottom part of the hole inside the jack.

I think you will find that you have some voltage on the RCA inputs of the amplifier. To fix this properly you will need to take it in to be serviced.

Sometimes you can ground the RCA jack ground somehow with a jumper wire and then turn the system on with the RCA cable plugged in and it will seem normal. But you do not want to do that as a repair, only to see if the amp will play. If it does play, you know that the problem is in the pre-amp of the amplifier. That would be the only reason to connect an external ground to the RCA jack. You still have a problem in the amplifier. If it does not play normal, you still have a problem in the amplifier if there was some DC on the RCA jack.

Sorry this answer is so long, but the problem you are having will require service of one of your units, you just need to know which one it is. If your inputs get grounded, you will not have the amp go into protect, you just won't hear anything.

Let me know if you need more help and if this was helpful to you a good rating is always appreciated.

Jun 22, 2008 | Power Acoustik TS1440-2 Car Audio...

2 Answers

RCA INPUT JACKS


did it work well before?is it new? try moving the rca's and se if you hear any thing?

Jun 30, 2007 | MA Audio HK802SX Car Audio Amplifier

3 Answers

Auxilary RCA inputs have no volume control


Your problem stems from the fact that the CDA-7892 is not equipped with an RCA aux-input jack. If you're plugged into RCA connectors at the back of the head unit, they're outputs, not inputs. The sound you hear is just feeding back through the outputs and into the head unit's amplifier. If you want to play your iPod through this head unit, you need to purchase either the auxiliary input adapter (KCA-121B) or iPod adapter (KCA-420i).

Mar 15, 2007 | Alpine CDA-7892 CD Player

1 Answer

3/4 channel sony amp


Yep! It's called a Y-Splitter. They make different variations of them: http://www.computerplug.com/img/cables/CRCA-YFFF.jpg https://www.wiredco.com/catalog/images/PYTHONRCAY.jpg http://4netconnex.com/images/products/8-2521.jpg

Aug 14, 2006 | Sony Xplod XM-554ZR Car Audio Amplifier

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