Are all the speakers inside the box wired individually? You can combine speakers in series to increase the resistance the amp sees (so 2x 4ohm speakers = 8ohms load, or 4x 2ohm speakers).
That's odd I have no such sounds from mine. I can crank it up really loud without any issues
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"Lead by example, follow by choice."
Could do, but I'm hearing it from each speaker so seems like something affecting all of them?
ok thanks, forgot that it was 2 and 4, not 4 and 8.
Doubling up each pair would indeed get that wires impedance to 8, but wouldn't the total still be 16 to the sub? Before I do any more disassembly though I'm going to listen to a few more CDs at lower bass levels and see if it's still bothersome.
You're running with DSP off, correct?
What bass level?
Last night's listening/tuning session convinced me that anything over 50% bass was too much. Even 50% overpowered the mids and highs, and also was tiring.
But I only listened to the one REM album so need to try some others.
Last edited by Nurburgringer; 02-28-2017 at 07:56 PM.
Last edited by dville; 03-01-2017 at 06:46 AM.
My E38 Project...................DSP Rear Deck Subwoofer box with Monsoon Speakers and Metal pulleyed window regulators NO longer for sale (click link to see how to make your own)....................................
Faceplate distortion and cone movement is pretty normal for subs, especially in a sealed box. when you're moving the cone that much, some sound is inevitiable. I wonder if a small square of Dynamat or similar on the underside of the mounting plate would help.
Is the box really sealed?
I popped the trunk last night, and reaching up under the box could feel air movement so I think it's ported out of the bottom.
Could still hear the buzzing sound with the trunk open when I put my head close to the speakers, but again now that I've adjusted the bass level down below 50% it isn't audible in >90% of the songs I've listened to.
box IS sealed.
I agree with mooll, I thought my box was sealed, but I may have missed it. Maybe yours is supposed to be sealed and is not, or maybe some were and some were not depending on year. I am sorry I don't have an answer on this. As far as I know dville has done more of these than anyone else so maybe he will chime in.
"Lead by example, follow by choice."
Isn't this a port in the backside which feeds to the trunk?
From the thread where dville describes his adventures fettling the boxes. https://www.bimmerforums.com/forum/s...eakers-Choices
Not sure now, but isn't that a port from the interior of the car to the trunk to relieve pressure when the doors are closed? I am not sure if the speakers connect to that. again I might be wrong.
"Lead by example, follow by choice."
For you guys looking for good albums - years ago before I lost most of my hearing and being recently divorced I spent an evening in a stereo store (for those in KC, KA) Beattys, I walked out with just over $3K in sound equipment. The deal maker was listening to a Jazz album "Jazz at the Pawn Shop" a two record album for those that remember what those are. They were playing it on some nice equipment, including some very expensive MagnaPlaner speakers. The album was a $35.00 Digital Master but I can still remember the sounds from that album and I wore it out years ago...... If I could still hear those sounds I would look it up on CD now. It has very subtle sounds of silverware rattling at a sidewalk cafe and some very good backgrounds, a good jazz example.
http://i293.photobucket.com/albums/mm71/krallopian/darthSigTest2_zpsn6zkw5id.jpg[/URL][URL="http://www.facebook.com/pages/DFW7-Dallas-Fort-Worth-BMW-7-Series-Club/300942239566"]DFW7 on Facebook/URL]
"The Last Great e38" 2001 i Sport - Born'd on date 1/01 Cosmos/Grey - 32.8K miles - 2 1/2 " Custom Exhaust, Center “X”over , Modified OEM rear bumper, M5 style trunk spoiler, M6 OEM wheels, M3 Steering wheel with working paddle shift & CF trim, Bi-Xenon upgrade, 13mm Rear sway bar added, SS brake lines and bronze bushings, Cross drilled rotors and painted calipers, Akebono pads, Zionsville aluminum radiator & exp. tank with electric fan, Sprint Booster, BluTooth conversion, MKIV Nav., Custom wood cupholder, DUDMD Tune, Orien V2.5 LED Angel Eyes, Evans waterless. Recently added grey faced //M5 Cluster - all gauges functioning. Changed the grey carpet to black and topped off with GG Bailey front/rear mats[/SIZE]
The box is one large connected cavity with a large port into the trunk (on 1997? and later cars). Not sure what year the port holes began
There are 2 pieces of sponge on either side of the port that I usually remove with needle nose pliers.
There should be no buzzing or rattling if you test the box outside the car.
You have to tighten the box to the rear deck before testing it or it will surely make a racket.
Last edited by dville; 03-01-2017 at 11:03 PM.
My E38 Project...................DSP Rear Deck Subwoofer box with Monsoon Speakers and Metal pulleyed window regulators NO longer for sale (click link to see how to make your own)....................................
Delivered today…
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Matthew M.
North Carolina, USA
1997 840Ci | 2001 740iL | 1985 308GTSi Quattrovalvole
Nice, mine are due to arrive tomorrow.
Matthew M.
North Carolina, USA
1997 840Ci | 2001 740iL | 1985 308GTSi Quattrovalvole
Did mine in the car with some foam and screws with washers. They sound killer! The best part was I was done in two hours. On to the valley pan.
Attachment 594503Attachment 594504
Now that's a shortcut!!!
Any pics with the grilles installed ?
My E38 Project...................DSP Rear Deck Subwoofer box with Monsoon Speakers and Metal pulleyed window regulators NO longer for sale (click link to see how to make your own)....................................
Can someone post a pic of where a guy is supposed to cut these rings off exactly?
2000 740i - 149K - Dville Monsoon rear deck speaker upgrade, GROM audio Bluetooth
1998 528i - 204K - GROM audio Bluetooth setup, Drilled/Slotted Rotors, BSW Stage One speaker kit, Facelift Xenon's with Angel Eyes
2003 M3 - 210K - BMW Euro Cross Drilled Rotors
2000 740i - 149K - Dville Monsoon rear deck speaker upgrade, GROM audio Bluetooth
1998 528i - 204K - GROM audio Bluetooth setup, Drilled/Slotted Rotors, BSW Stage One speaker kit, Facelift Xenon's with Angel Eyes
2003 M3 - 210K - BMW Euro Cross Drilled Rotors
The finished product. Did the heat gun glass jar trick to get the inboard speakers in.
Attachment 594559
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