[cdgatti]

I have an aftermarket amp powering my hifi system in my e90. Would like to take care of some equalization problems, dip at 4K, and generally smooth things out. The audio control DQL-8 looks ideal, but looking to spend alot less! What is an economical way to add an equalizer to the system?

[ctuna]

What is the year of your car?
Do you have tweeters in the door?
What is it you have in your car stock speakers in doors and floors? Which amp?
In general you can't get real cheap in these cars and get a good result.

BMW stereo types
http://www.e90post.com/forums/showthread.php?t=352586
http://www.e90post.com/forums/attach...2&d=1266451970
http://www.e90post.com/forums/attach...2&d=1260829447
http://www.e90post.com/forums/showthread.php?t=343673
http://www.e90post.com/forums/showthread.php?t=138949
http://www.e90post.com/forums/attach...2&d=1260829447
http://www.e90post.com/forums/attach...1&d=1209780605
http://www.e90post.com/forums/attach...1&d=1209780865
http://www.musicarnw.com/page-2/

[Technic]

Originally Posted by cdgatti

I have an aftermarket amp powering my hifi system in my e90. Would like to take care of some equalization problems, dip at 4K, and generally smooth things out. The audio control DQXS looks ideal, but looking to spend alot less! What is an economical way to add an equalizer to the system?

Fixed.

The HiFi OEM amp has a built-in EQ curve that may interfere with the DQXS adjustments.

But it is doable...

[VP Electricity]

The fun part is finding one that doesn't have engine noise in your car. I've tested a number of them in my HiFi car, and most of them have RPM-related whine. The A/C is a PITA to tune, too.

[naamanf]

I plan on trying out a miniDSP with their DC-DC converter. If you can live with only four channels of tuning it might just fit the bill.

[VP Electricity]

Originally Posted by naamanf

I plan on trying out a miniDSP with their DC-DC converter. If you can live with only four channels of tuning it might just fit the bill.

I gave up on it. Wouldn't take enough input voltage, wouldn't give me enough output voltage, and I had engine noise. Great on paper. If they ever make a 12V unit with a switching power supply and the right I/O circuitry...

[cdgatti]

Originally Posted by Technic

Fixed.

The HiFi OEM amp has a built-in EQ curve that may interfere with the DQXS adjustments.

But it is doable...

I already replaced the hifi amp, so no need to worry about that. I am hoping to not spend so much, although that DQXS and several other audio control items look good. There has to be something out there that can take 2 or 4 channels and split them into 6 channels with EQ capability for less than $300. The search continues.

[ctuna]

If you are running the crappy stock speakers that might be the problem or a large part of it right there. Better speakers in the doors might be able to help fill the 4 k gap instead of doing the round about processing approach.
If you would state what exactly you have in your system you might be able to get better help on solving the problem.

[VP Electricity]

Originally Posted by cdgatti

I already replaced the hifi amp, so no need to worry about that. I am hoping to not spend so much, although that DQXS and several other audio control items look good. There has to be something out there that can take 2 or 4 channels and split them into 6 channels with EQ capability for less than $300. The search continues.

You can use the Audio Control LCQ1.

Enjoy the engine noise

[cdgatti]

Originally Posted by ctuna

If you are running the crappy stock speakers that might be the problem or a large part of it right there. Better speakers in the doors might be able to help fill the 4 k gap instead of doing the round about processing approach.
If you would state what exactly you have in your system you might be able to get better help on solving the problem.

I am running a 300 watt alpine amp. Front channels on a set of BSW mids and Polk tweeters and SSMB woofers. Rear channels on BSW mids and tweeters.

[Technic]

Originally Posted by cdgatti

I am running a 300 watt alpine amp. Front channels on a set of BSW mids and Polk tweeters and SSMB woofers. Rear channels on BSW mids and tweeters.

A 3SIXTY.1 may help you... if RF fixed all the bugs that I found in my 3 .2 units 4 years ago.