Rsterns Posted May 30, 2012 Report Share Posted May 30, 2012 Greetings, I don't get an opportunity to frequent this page too often, but I find myself needing the expertise of the Volvo audiophiles. I just finished Dynomating my 99 V70 T5, and replacing the OEM door speakers with a new set of Polk’s. No issues there as they are working fine. My problem is I want more base, door woofers just don’t cut it. My HU is an SC-901 and I have the Prologic center channel. I’m not looking to loosen fillings, as I listen mainly to jazz, but some sort of boxed sub with appropriate amp is in order. Is this doable with the 901? Looking for suggestions and a path forward to a solution. Thanks in advance. Link to comment Share on other sites More sharing options...
andyb5 Posted May 30, 2012 Report Share Posted May 30, 2012 Hi Bob, Since your 901 has a factory amp, you can't use the factory amp connection to send a signal to an aftermarket amp. You'll need a line output converter to take a signal from one the speakers and reduce it to an amp-level signal. For your music preferences, I think you'd like a single 8" or 10" subwoofer in a sealed enclosure. Link to comment Share on other sites More sharing options...
Rsterns Posted May 30, 2012 Author Report Share Posted May 30, 2012 Hi Bob, Since your 901 has a factory amp, you can't use the factory amp connection to send a signal to an aftermarket amp. You'll need a line output converter to take a signal from one the speakers and reduce it to an amp-level signal. For your music preferences, I think you'd like a single 8" or 10" subwoofer in a sealed enclosure. Thanks Adam, That's just the information I needed. One last question, as this is not my area, is it appropriate to provide power to an aftermarket amp directly from the battery, and if so for a 10' what size amp and gage wire? Link to comment Share on other sites More sharing options...
Jesus Posted May 30, 2012 Report Share Posted May 30, 2012 http://www.discountcarstereo.com/AiH-VOL2.html Link to comment Share on other sites More sharing options...
andyb5 Posted May 30, 2012 Report Share Posted May 30, 2012 ^^Very cool. I'd recommend using that instead of the line output converter I mentioned earlier. Yes, you will need to provide power directly from the battery. For your setup, I'd go with 8AWG power and ground cables. For your needs, look for an amp with ~250 watts of RMS (not peak) power. Link to comment Share on other sites More sharing options...
Rsterns Posted May 30, 2012 Author Report Share Posted May 30, 2012 Wow, this is getting better by the moment! Thank you; That is a perfect solution for the addition, still looking for any guidance related to size amp to drive a 10 in sub.Can't edit and the answers have been flying real time, I love it and Thanks! Now I just have to go shopping. Link to comment Share on other sites More sharing options...
JRL Posted May 31, 2012 Report Share Posted May 31, 2012 Bob I used only a single 100W amp to power two 8" Kicker free air subs on my 99 S70T5 and it was quite adequate. I think you're like me and only need "filler" bass and do not want or need the ground to shake! BTW, how are these speakers compared to the OEM speakers that were in there? Jim Link to comment Share on other sites More sharing options...
Rsterns Posted May 31, 2012 Author Report Share Posted May 31, 2012 Bob I used only a single 100W amp to power two 8" Kicker free air subs on my 99 S70T5 and it was quite adequate. I think you're like me and only need "filler" bass and do not want or need the ground to shake! BTW, how are these speakers compared to the OEM speakers that were in there? Jim Hi Jim, The speakers are a real improvement as they don't 'buzz' with a bit of volume. The fade is acting a bit odd, most likely because the rears are now 4 ohm instead of the 8 ohm that came out. One thing I'm considering, as it's a cheap experiment, found some 4 ohm 100W resistors, might try to put it in series to make it an 8 ohm speaker and see if that corrects anything. Link to comment Share on other sites More sharing options...
TaskMule Posted May 31, 2012 Report Share Posted May 31, 2012 I have one of those wiring adapters in my 850R, connected with 8G wire to a 100w monoblock Pioneer amp, and a single Infinity 10" in a sealed box. Simple install, and woks perfectly. It is perfect for me, and fills the low end nicely without blowing the windows off the car. I can recommend that adapter for your use. SO much better than a line adapter, which I initially tried. It was terrible. Link to comment Share on other sites More sharing options...
andyb5 Posted June 1, 2012 Report Share Posted June 1, 2012 Bob--one thing I forgot to ask in my PM was do you still have the D-pillar speakers connected? Link to comment Share on other sites More sharing options...
Rsterns Posted June 1, 2012 Author Report Share Posted June 1, 2012 Bob--one thing I forgot to ask in my PM was do you still have the D-pillar speakers connected? Andy, yes I do, they are still OEM, haven't even pulled the grill to look at them yet. Link to comment Share on other sites More sharing options...
BEJinFBK Posted June 1, 2012 Report Share Posted June 1, 2012 Resistors are static loads. Speaker voice coils are dynamic loads. I would avoid involving any fixed resistors and adjust the fader to where it sounds right for you for now, as your modified system sits. If it's still a problem after you add the sub, there are better tweaks. Link to comment Share on other sites More sharing options...
Rsterns Posted June 1, 2012 Author Report Share Posted June 1, 2012 Resistors are static loads. Speaker voice coils are dynamic loads. I would avoid involving any fixed resistors and adjust the fader to where it sounds right for you for now, as your modified system sits. If it's still a problem after you add the sub, there are better tweaks. Thanks, I've done further research and agree that was not a sound solution (pun intended). Through Andyb5 however, I did learn about the equalizer I didn't know I had in the 901, (only had the car now for a few months), anyway, I couldn’t wait till morning, so I just finished spending the last 20 minutes or so out in the dark futzing with the equalizer, the rear speakers have now come alive, and I will sleep very well this evening. :tup: Link to comment Share on other sites More sharing options...
Mesoam Posted June 5, 2012 Report Share Posted June 5, 2012 IMHO your best bed for what you want is a Basslink Link to comment Share on other sites More sharing options...
Rsterns Posted June 5, 2012 Author Report Share Posted June 5, 2012 My solution based on input that I'll be installing this weekend. Link to comment Share on other sites More sharing options...
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