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Re: Anyone ever pop open a Volvo amp? Specifically an R's amp? (Jexx)

An amp. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0"> <p>Actually, they are nothing special. Sealed to keep out dirt, that is part of the problem, poor airflow from within and around the unit. I also think that they were not spec'd out to be driven that hard, maybe listen to some nice jazz or the symphony, nothing too loud.<p>I recall reading a comment from an EE around here who said that the circuitry was nothing special. The specs are average.<p>A well postitioned muffin fan would help.<br>
 

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Discussion Starter · #3 ·
Re: Anyone ever pop open a Volvo amp? Specifically an R's amp? (MrTippy)

Yeah, being sealed and located under the seat is a great combo for triggering the thermal protection circuitry. <p>I guess I wouldn't expect the circuitry to be anything special, but was maybe hoping with it being the top grade sound system (in the R at least), they would beef up the amps with some bigger caps etc.
 

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Discussion Starter · #5 ·
Basically just less clipping at higher levels as the PSU can supply the amp with sufficient power. There are actually a lot of reasons for it...
 

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Re: (Jexx)

Right, but I don't think that clipping is the problem here. Sure, these amps can probably driven to clipping without much difficulty, but I'm betting that they are just giving out too much heat for the housing design. New caps should clean up the output, but there is still the heat to deal with.<p>I took a look at mine yesterday and it gets quite warm just playing at my normal levels. I'd go for a fan. If one really wanted to get creative, they could grind off the shallow fins and install a real heat sink.
 

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Discussion Starter · #7 ·
Ahh, my bad. I thought you were referring to the benefits of a beefier amp design in general, not in reference specifically to the overheating problem. I was thinking to myself "I feel stupid saying this when MrTippy is the audio forum guru" <p>Yeah, as far as the overheating factory amps go, definitely agreed, a bigger heat-sink with cooling vents and fans would make a huge difference. <p>Sorry if this is OT, but do you have any aftermarket audio equipment in your system? Curious as to how it integrated and what you picked to swap out...
 

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Re: (Jexx)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>Jexx</b> »</i></TD></TR><TR><TD CLASS="quote">I was thinking to myself "I feel stupid saying this when MrTippy is the audio forum guru" <p>Sorry if this is OT, but do you have any aftermarket audio equipment in your system? Curious as to how it integrated and what you picked to swap out...</TD></TR></TABLE><p>Guru? Only if you use that word very loosely. There are others around here with much more expertise, both professionally & volvo-lly. I probably fall into the "some knowledge is hazardous class," not quite an authority, but no longer dangerous. I am more like the CA, V& M garbage man: I have the ability to moderate, yes, which in this forum means deleting the errant spam and misplaced post, and helping to ensure that people's questions get answered.<p>As far as my vehicle goes, it's stock with an iMIV & and iPod. I unsuccessfully played around 4 years ago with some others trying to find a way to hook an aftermarket cd-changer to the HU. Then mrg_ed turned up, he was going to do an ipod adapter. So several of us got behind him, mostly with moral support, some market research and I did some proofing and a little beta testing. That's where & how I learned about the melbus. My limited expertise is not with the aftermarket, but a working understanding of the melbus and what it takes to interface with it.<p>I also swapped out my HU-613 for and HU-803 which basically taught me what was required for that and how the amps are set up.<p>Along time ago, I harbored ambitions of replacing my speakers with some Dynaudios that I got out of a C70, but found out that would have meant reworking the door panel. Maybe next year... I like the stock look, but more importantly, so does my wife--and she is the primary driver. My ears probably aren't good enough any more to justify a top shelf aftermarket system.<p>Aside from the MELBUS, most of the audio in these cars is standard fare until you get to MOST equipped cars.
 

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Discussion Starter · #9 ·
Overall I'm extremely impressed with the R's audio system. It is the first stock system in a long time I have had that I haven't had the craving to modify. Nearly all of my past cars have had the complete system pulled. The dolby surround, fantastic speakers, and factory look are much welcome. I've only encountered the amp shutoff problem..twice, and those were rare occasions. In my daily driving it doesn't happen.<p><br>Only thing I've added is a USA SPEC adapter for my iPod. Was considering the iMIV adapter, but then the USA spec popped up used on ebay for a great price and couldn't miss it. <p>Great swap with that headunit! <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0">
 

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Re: (Jexx)

If a guy added a sub...<br>Most of the work that the stock amp does is for the bottom end. Mids and highs need little.<br>Let an amp and a sub handle the bass, and the overheating would be less of an issue.<p>The next level would be a preamp level high pass filter between the HU and the amp.<br>That would go a long way towards avoiding stock amp overheating shutdown.<br>Of course, you'd have to put up with better lows...Just a thought. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/wink.gif" BORDER="0">
 

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Discussion Starter · #11 ·
Re: (BEJinFbk)

Yeah, in my previous sound installations I wouldn't have dreamed of having my component woofers playing without a HPF (around 80Hz) as it also distorts faster when the volume is cranked up. But the beauty of this particular system is it doesn't need a subwoofer! A subwoofer really would be too much for my R's setup. <p>Excellent suggestion, however! And the one I would most likely take if I were to modify this system. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0">
 

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Re: (MrTippy)

So how many channels of amplification are handled in that amp?<br>I've never dealt with the P2 gear.
 

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Re: (BEJinFbk)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD><i>Quote, originally posted by <b>BEJinFbk</b> »</i></TD></TR><TR><TD CLASS="quote">I've never dealt with the P2 gear.</TD></TR></TABLE><p>I know, I keep reminding you of that. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0"><p>The amp is 4-channel, L/R & F/R. Same as the P1's. It's 3-way up front, only. But that's just fine with ProLogic.<p>The speakers, which are pretty decent, are made by Harman and have basic bandpass filters on them, nothing special there. The fronts are a tweeter in the handle, a midrange and woofer in the door. It's a nice system. <p>It is similar to the early C70's, only, of course, many of those had Dynaudio drivers--full 8" woofer up front and the coupe had 2X8" or 10" woofers on the package tray, to boot. And that's not counting the sub (9 or 10 inch) option behind the rear seat.
 

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Re: (MrTippy)

Thank You, Sir. Input is always appreciated. <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> <br>Just tryin' to keep up! <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/biggrin.gif" BORDER="0"> <p>I really like my "relatively uncomplicated" Gen 1, though.<br>I believe that I shall drive this car until the wheels fall off. <IMG NAME="icon" SRC="http://www.vwvortex.com/vwbb/smile.gif" BORDER="0">
 
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