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S80 '98-'06 / S60 '00-'09 / V70 & XC70 '00-'07 General Forum for the P2-platform S60 / V70 / XC70 / S80 models |
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S60 shelf speakers upgrade and hidden amp?Views : 1365 Replies : 21Users Viewing This Thread : |
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Apr 4th, 2020, 10:05 | #1 |
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S60 shelf speakers upgrade and hidden amp?
first of all i have an original HU-650 in my 2006 S60 and according to mathews volvo site i have 4 ohms speakers in the doors (unconfirmed by me) and 8 ohms in the shelf (confirmed by me)
im going after market with a pioneer AVIC-F77DAB which is 4 ohms im getting people saying i shouldn't use 8 ohms speakers with it its going to damage it but according to an audio specialist it shouldnt cause a problem it would only cause a problem if the ohms were lower not higher. anyway i might want to change the shelf speakers not sure if i need adapters or not? also anyone done this and found any after market speakers? not after high power just something average. also im told i may have a hidden amp i definitely dont have an external one under the seat thats for sure but im told its possible there may be one elsewhere and i was told i could check it by using a multi meter on the speaker wires behind the stereo but not how to test it! |
Apr 5th, 2020, 18:26 | #2 |
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As far as I am aware, the only possible position of the amp on the S60 P2 model is under drivers seat. That is where mine is. If I am correct, the speakers are 8 ohm, connected in parallel, so the amp (internal in head unit or external) sees them as 4 ohm. If you plan to replace the head unit with aftermarket one and you leave the speakers the way they are you shouldn't have a problem. If you meter the impedance of the speaker itself, you get 8 ohm, nut if you meter it at the speakers outputs on the back of the head unit you would most likely get 4 ohm, because of the parallel connection. Even at 8 ohm, they shouldn't damage anything. The issue would be loss of power. Higher impedance means more power needed to drive the and less impedance means the amp will output more power but also generate more heat and this case you are risking a damage to the amp.
Not sure why you would want to replace the shelf speakers. Regardless of whether you are after sound quality or sound power you would be better off (and to me it seems easier) with sub woofer. If you don't want to take space in the trunk, then I would go with just quality component set in the front and nothing on the rear. I am saying this as someone who installed one component set in the front and one in the rear, both powered by external amp and was very sorry after this. I removed the rear ones and sold them. Just front and sub is the optimal option in my opinion, unless you have sound processor and the ability to cut the frequencies on the rear for just bass and nothing else. |
Apr 5th, 2020, 19:00 | #3 |
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Is this another car? Or did you solve your battery issue?
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Apr 5th, 2020, 19:09 | #4 | |
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thank you seems someone else was talking a load of bollocks then because what you say there seems a lot more sense. also i spoke to an audio specialist after i posted this and they said they would only worry if it was lower ohms like 1ohms now i just got to figure out what to do with the dash speaker instead. its not working bare in mind it didnt work with the old HU650 but it did work with my other head unit. apparently the wires go through the green connector but which ones? i was thinknig of getting an amp and using it as a sub and connecting the amp to the rca on the head unit |
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Apr 5th, 2020, 19:11 | #5 |
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yeah fixed it there is a block of wires that sits down the side of the battery with supposedly self resetable fuses that was the problem!!! so no wonder i couldnt find it with taking all the fuses out, they are not even connected to any fuses on the boards f*****g stupid! all of them are permanent live's direct from the battery
Last edited by totalguy; Apr 5th, 2020 at 19:20. |
Apr 5th, 2020, 19:48 | #6 | |
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Apr 5th, 2020, 20:27 | #7 | |
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Apr 6th, 2020, 09:36 | #8 | |
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they are 6.5 inch speakers in the doors i think 8 in the shelf and i think 8 again in the dash. i dont really want to run an amp f or all the speakers i just want to get the dash one going again qas to me it sounded better with it |
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Apr 6th, 2020, 10:38 | #9 |
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I can't help with the wiring, I am afraid. I have never disassembled mine. Besides, mine is different model so maybe the wiring is different too. One way to tell is to get a small battery, 1.5 volt should be enough. Connect it to the wires you want to check (don't worry about positive and negative) and you should hear a pop from the corresponding speaker(s). Just a thought, are you positive the centre speaker isn't turned off or lowered down from the menu? There should be a hidden menu, from you can control the surround levels, level of centre speaker and so on.
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Apr 6th, 2020, 11:02 | #10 | |
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black ground red ignition yellow battery/permanent blue antenna (think its for powered antenna) orange speed sensor wire but the other option is finding the 2 wires adding the pins to the iso wiring adapter and wiring them to a mono sub and then the rcas's to the amp/ or i could just not pin the iso adaptor and just go direct to the speaker either way i need pin outs for volvo and/or pioneer..... i guess i could do it another way see if the wires in the speaker match up colours on the green connector or do a continuity test to the green connector and the speaker |
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