Question about MB Quart DSD 216 Car Component System

1 Answer

Tweeters fading out

My problem is this.my system consist of this,mb quart components up front,mb quart add a woofer in rear doors and bass tube and eclipse 4/5 channel amp,pioneer headunit.when listening for about 15 min.at high volume the tweeters will begin to start fading out,so i drop the volume level down and they start to come back and i have to leave it at that volume level which is somewhat low.. is there a fix

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  • robert sanders
    robert sanders Aug 08, 2006

    problem resolved to much gain and distortion going through fronts

  • robert sanders
    robert sanders Jul 23, 2007

    mitco39,the problem

  • robert sanders
    robert sanders Jul 23, 2007

    mitco39,i will try your solution.but one thing turn on hpf on head unit or amp or both??

  • robert sanders
    robert sanders Jul 23, 2007

    one other thing set hpf to what 50,80,125 on headunit and what about the amp

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  • 62 Answers

Turn on the HPF it will definatly clear up the sound.

Posted on Mar 25, 2007

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Related Questions:

Tip

How to wire multiple speakers to one channel.


This mainly concerns surround sound systems, with a subwoofer. It is possible to wire multiple speakers to one channel, most useful for subwoofers. Even though bass is nondirectional, the user can still sort of place it. I create "surround bass" with one subwoofer channel. Enough intro.

I purchased two old Sansui LM-110 multi-driver(woofer and tweeter with a passive crossover) and placed them around the back wall till i liked the positioning. I then replaced my ht-z320 subwoofer with a Samsung PS-WX50(from the HT-X50 system). The X50 went in front, under the TV. The wiring to he speakers must be exactly as follows, lest the amplifier in the main unit repeatedly shut the unit down to protect(PROT then shutdown) from damage.

This is easier to do if you know how to solder(it also grants better sound), but can be achieved with a twist on wire connector and wire strippers.

The purple plug positive(denoted as a + inside a circle) keeps its wire, going to front woofer(Samsung PS-WX50) RED. Cut some speaker wire to the back woofer last on the route the wire will take to the rear woofers. Split it, then cut one of the two wires on the speaker wire at the other woofer. strip both ends. Do this to two equal lengths of speaker wire. Split and strip the joined ends of the first wire and connec both ends to the black port on the front woofer, the othe ends to the back woofer RED ports. Take the other wire, join the unsplit ends to the negative wire(helps to cut that short) in the purple plug, using your wire nut. Strip and connect the other ends to the black ports on the back woofers. This basically is a series setup. The back woofers are one one parallel circuit, but are powered as one speaker. therefore, the front speaker and both back speakers(acting as one) are a series loop. To simplify, unit + to front red. Front black to both back red. Both back black to unit -.

4738ac2.jpg

on Jun 13, 2010 | Audio Players & Recorders

1 Answer

95 chevy blazer


The wires provided for a radio system are as follows:
yellow = hot with ignition key ON
orange = hot from BATT at all times
Grey = dimming power from instrument panel

Black = ground

Harness Wires provided for the speakers as follows:
Left rear speaker = +brown -yellow
Right rear speaker = +dark blue - light blue
Left front door speaker and tweeter = +tan - grey
Right front door speaker and tweeter = +light green -grey
Note: connection colors at the speaker location differ as noted:
Right front door = +brown -yellow
Left front door = +brown -yellow
All other speaker connections are consistent with their harness colors.

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I have the mb quart pvi216 component set. The input side of the crossover calls for pos wire of tweeter connects to neg on TW input and neg in pos position according to wire diagram. Is this correct. Also,...


Looking at the schematic provided by Maxxsonics, I see what the OP's problem is:
The manual shows one polarity on the sketch of the crossover's input terminals, yet the schematic below it shows the complete opposite polarity!
The output is correct.
Before you turn your crossover (or amp) into a smoke-generator, I suggest:
Double check your actual tweeter's input for labelled, silk-screened or embossed polarity and channel (Wf/Tw) markings, as manual may have errors on either drawing (top) or schematic (bottom).
If in doubt, try this:
With a DMM on ohms scale, and [font color="red"]Power Off[/font], from ground (chassis) to first input terminal, note down resistance.
Repeat ground to 2, Gnd to 3, Gnd to 4, all INputs..
The low readings should be negative (aka shielded screen or common GND).
However, the DMM test won't tell you which is Woofer or Tweeter.
Alternatively, you could undo the X-over shell, then trace the terminals to the board.
Negatives should go to ground (unless it's isolated in circuit).
To confirm which is yo 'Wofaah' and 'Tweetah' input, (shell and power back on), touch 2 mono wires from a small output (earphone of CD player, cassette, trannie radio etc) to each input and listen for Woofer bass and Tweeter treble difference.
Hope this helps you.


pvi216-lvf1trxe3fjvmtyzmrqtfsfv-2-0.jpg

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How do i install my component


from the speaker outputs of the head unit / amplifier. Connect from the positive and the negative outputs to the respective positive and negative input of your X-over box. Now connect from the X-over woofer/midbass output to the bass driver. Now do the same for the tweeter from the X-over from the tweeter output to the tweeter. Make sure that all the positives and negatives are correctly connected.
If you are going to use your head unit to power the speakers then you should know that:
White & white with black stripe is the Front Left Speaker output
Grey & Grey with black stripe is the Fron Right Speaker output.
Green is rear left
Purple is rear right.
I think you get that the black stripe speaker cables are the negatives.
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My advice would be to connect the front speakers and the sub woofer to the amplifier and run the remaining rear 2 speakers from the headunit. This way you dont stress the amplifier to run on two different loads at the same time and still maintane control over your system. Bridge your sub woofer on chanel 3&4 and do not forget to set the LPF for chanel 3&4. If your speakers are not components in the front set the HPF on chanel 1&2 to roughly 60 to 80 Htz.
dreamsystems.

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1 Answer

My sub woofer stopped working, please tell me where it is located so i can check the speaker and also check if power is going to it thank you very much joe


The JBL premium sound system has a large woofer in the bottom of each door, a small mid-range speaker next to the woofer, & tweeters next to the front door windows in the corner, & two full-range speakers near the rear seats. The woofer (not sub-woofer) handles all the low end. You can test the woofer by turning the BASS to max and TREBLE to minimum (make sure balance and fader are centered) and put your ear next to each woofer.
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SOLUTION 2: More involved but very cost effective. If you or a friend is handy, you can go to www.speakerworks.com and order a new set of speaker outer rings (on the site they are called speaker SURROUND) that will replace the damaged outer rings on the woofers (replace on both woofers). They really work great and your speakers should last for many more years.
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