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Problem With Mach 460: Aftermarket Headunit : Bass Cut Off On High Vol

  • Thread starter Thread starter V6-2002
  • Start date Start date Jun 15, 2012

V6-2002

New Member
Jun 3, 2012
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Jun 15, 2012
#1
  • Jun 15, 2012
  • #1
Hi Guys,
I am sure this has been asked multiple times before, I tried searching but could not get the ans.
I have mustang 2002 V6 convertible. With Mach 460 (I guess so because I don't see any sub in truck and only 2 amps back to the rear seat).
Mach 460 comes with 2 amps, powers front door and rear speakers and my 2.5 tweeters are getting power directly from HU.
I have installed pioneer headunit with front door speakers with Infinity (6x8). Rest all stock.
Problem : When I increase the volume more than half, bass cut off and then comeback in few seconds.
As fas as I understand, this is happening because my stock amps are powering to all door speakers. Stock speakers are different ohms than after market (4 Ω), so when I increase the volume, amps goes in protection mode.
I need suggestion :
I am planning to replace my rear speaker also with 4 Ω too and plug off all the tweeters and connect the tweeter wires to Speakers (Door and rear). As tweeters are directly getting power from head unit (i.e. 4Ω output) they should work with door and rear speakers.
And add a 10" sub with after market amp with stock amp output.
Do you guys think this setup is feasible and will deliver good sound?


o ya .. I am using Metra 70-5519 Wiring Harnesses to connect aftermarket HU.
Please advise.



Thanks for your time.
 

V6-2002

New Member
Jun 3, 2012
8
0
1
Jun 15, 2012
#2
  • Jun 15, 2012
  • #2
any one ?
 

wmburns

SN Certified Technician
Aug 14, 2009
5,892
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Houston Texas
Jun 16, 2012
#3
  • Jun 16, 2012
  • #3
FWIIW, if you expect an answer you really need to provide more information. EXACTLY which radio does your car have? Guesses won't do. Exactly which replacement head unit has been used? How about a link to the manual? How has the adapter been wired (exactly)? Have the stock amps been re-used? If so, does your head unit support pre-amp out (high impedance)? Does your head unit support High pass and low pass options?
 

V6-2002

New Member
Jun 3, 2012
8
0
1
Jun 16, 2012
#4
  • Jun 16, 2012
  • #4
I am sorry, if given information was incomplete.

This is the head unit, I am using.
http://www.pioneerelectronics.com/StaticFiles/Manuals/Car/DEH-2100IB_OwnersManual0917.pdf

This is how I have wired it:
http://mustangboards.com/show-shine...g-am-head-unit-w-mach-460-00-04-mustangs.html

Have the stock amps been re-used?
Yes, (But I am worried about the 4 tweeters, how they are getting power now, directly from the aftermarket head unit? or from any hidden amp )

does your head unit support pre-amp out (high impedance)?
I guess, Yes.

Does your head unit support High pass and low pass options?
Not sure About this.

Also attaching the connection diagram of after market head unit.
 

V6-2002

New Member
Jun 3, 2012
8
0
1
Jun 29, 2012
#5
  • Jun 29, 2012
  • #5
So here is the update,
The setup I described in my very first question here, works AWESOME.
no issues. Awesome bass.
Thanks
 
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