In Reply to: Re: Disappointing sound system causes frustration, Scott Paterson [Profile/Gallery] , Thu, 11 Oct 2001 19:40:51

I must first mention that I have a degree in audio and video, and have worked closely with many UK based AV manufacturers. SO my comments are based on actual data, observations and measurements I made at work. And now the comments...

The Pioneer units are using output IC's which have a useless output current drive capability. On top of that, the power supply stage in the stereo is one of those heavily protected types, which are very restrictive in delivering instantanious large amount of current to the speaker output. I suppose that must be, because it tries to sense if there is a short across the speaker beforehand.
On top of that, the heatsink in the stereo is a joke. It is unable to dissipate the energy from the output IC. The inbuilt thermal tracking circuit then starts reducing the sound output as the stereo gets hotter.

But the speakers. Yes, what can we say about the speakers? They were mainly made in Malaysia from a design once used in valve radios. In the list of speaker manufacturers, Malaysia doesn't even register as a reliable source. I can only say that they were selected due to price, rather than engineering quality. When put in an anechoic chamber and measured with a soundfield microphone, those paper cones produce wave patterns that haven't been seen since the seventies and early eighties.

Changing the speakers alone is a small step. But it only works for low output volumes. If you turn the stereo up, the amp just goes into "poor quality" mode.

By the way, the optional amp for the door speakers ain't much better! I was building more advanced stuff than that for the car in the eighties!


posted by 212.135.1...

• Disappointing sound system causes frustration, Joe Montano, Thu, 11 Oct 2001 18:47:51
  • Re: Disappointing sound system causes frustration, TimF, Fri, 12 Oct 2001 01:44:00
    • switching loudness on/off. Help!, StanleyB, Fri, 12 Oct 2001 04:34:50
      • Use the same procedure..., pmr, Fri, 12 Oct 2001 09:17:57
        • Thanks pmr! I just tried it. Just that WB key is different in UK., StanleyB, Fri, 12 Oct 2001 10:39:38
      • Use the same procedure..., pmr, Fri, 12 Oct 2001 09:14:18
  • Re: Disappointing sound system causes frustration, Scott Paterson , Thu, 11 Oct 2001 19:40:51
    • Re: Disappointing sound system causes frustration (long), StanleyB, Fri, 12 Oct 2001 04:51:49 <-- Viewing This Message
      • Nothing wrong with valve systems!, Randy Thatcher , Fri, 12 Oct 2001 12:41:24
        • replacement speakers, StanleyB, Fri, 12 Oct 2001 13:49:33
        • Re: Nothing wrong with valve systems!, StanleyB, Fri, 12 Oct 2001 13:37:11
      • They are STOCK!!!, Jose Nino, Fri, 12 Oct 2001 09:39:19
        • Hate to disagree,, Mike D, Sun, 14 Oct 2001 00:47:37
        • I am not comparing them to other cars..., StanleyB, Fri, 12 Oct 2001 10:43:37
          • Re: Turn off the loudness, Joe Montano, Fri, 12 Oct 2001 16:28:39

No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.

• Prev by Date: switching loudness on/off. Help!, StanleyB, Fri, 12 Oct 2001 04:34:50
• Next by Date: Manual gearbox owner? Check following out for me please!, StanleyB, Fri, 12 Oct 2001 04:59:25
• Main NG900 & OG9³ Bulletin Board

StateOfNine.com

SaabClub.com

Jak Stoll Performance

M Car Covers

Ad Available

The content on this site may not be republished without permission. Copyright © 1988-2024 - The Saab Network - saabnet.com.
For usage guidelines, see the Mission & Privacy Notice.
[Contact | Site Map | Saabnet.com on Facebook | Saabnet.com on Twitter | Shop Amazon via TSN | Site Donations]

Random Saabnet.com Member Gallery Photos (Click Image)