I should put one in my Mom's truck. I want to test it out! It's hard to believe that anything can make the stock radio sound good.

I kinda want to try it in my truck on the AVIC-D1.

 

I'm sure it will improve the D1 significantly. It made the stock HU sound better than the Pioneer DEH-P7800 in my S10 with virtually the same set-up. The stereo imaging alone is awesome. Like I said earlier, it's truly THX like.

For your D1 you will have to use your speaker outputs to connect to the CleanSweep. It only has a high-pass input.

 

What's the Clean Sweep do besides adaptive EQ that makes it sound so good to you? I would have thought it would just flatten out the OEM deck response.

 

What's the Clean Sweep do besides adaptive EQ that makes it sound so good to you? I would have thought it would just flatten out the OEM deck response.

Technically yes but at a boosted signal. I have not lost any high or low frequencies but gained low to high mid range frequencies. The bell ringing in Hell's Bells sounds much more realistic. Music now sounds more vibrant and rich. Listening experiences are much more enjoyable when playing music from Manheim Steamroller and Trans Siberian Orchestra because of the stereo separation and imaging it has added. Before, the bass was a tad bit boomy (I didn't realize this until after the CleenSweep) and the highs were crass and tinny. I can also adjust the HU volume for a desired sound stage (low volume for more bass and high volume for more powerful mids and highs) and use the master volume knob that's arrached to the CleanSweep for actual loudness.

 

So basically, its a high output LOC and EQ in one package?

 

You said in the 2k6 thread that it does not pass the aux through the processor but if you have the auxillary harness for the stock decks already won't that solve the issue? Or is there a similar unit that will run the auxillary through the processor?

 

So basically, its a high output LOC and EQ in one package?

Yes, but the EQ automatically corrects the OEM loudness curve once it's set up (if I understand it correctly).

 

Ah, I see! A nice little, simple solution for most people. Nothing that cant be done with a few hours of tuning.

 

You said in the 2k6 thread that it does not pass the aux through the processor but if you have the auxillary harness for the stock decks already won't that solve the issue? Or is there a similar unit that will run the auxillary through the processor?

Correct, the aux does not pass through the dsp. It comes into the unit to a switch controlled by depressing the main volume control knob. It would work if you use an aux adapter into the HU first. I may try that out at a later date. I have the GM12-AUXV2 adapter and didn't really like how you had to switch it.

So basically, its a high output LOC and EQ in one package?

Yes, but the EQ automatically corrects the OEM loudness curve once it's set up (if I understand it correctly).

Correct on both counts. The EQ is also active. I was listening to Juvenile's new CD with alot of deep bass and went to adjust the HU volume for more bass and the main volume for more loudness when there wasn't any music signal passing through and when the bass hit for the first time it sounded a bit distorted then by the next beat sounded fine again.

 

Ah, I see! A nice little, simple solution for most people. Nothing that cant be done with a few hours of tuning.

It actually takes a mere 25 seconds to tune to your HU. It comes with a calibration CD that is very simple and automatic. All you have to do is turn the HU volume to 50%-75% volume, adjust the Lo, Mid & Hi to the middle, Insert teh calibration CD, play track 1 and hit the calibrate button on the CleanSweep. It does it's thing and when the 4 channel LEDs turn to a solid green it's done.

 

Ah, I see! A nice little, simple solution for most people. Nothing that cant be done with a few hours of tuning.

The trick is that it doesn't tune for the vehicle - it tunes for the deck's loudness curve. So you still need to do some tuning for the vehicle after it's done.

 

So would you get speakers or this first? I just want a better sound for playting my mp3 player. Clear sound is all I really want.

 

This won't do you any good unless you have an amp and speakers. Also, this really isn't for aftermarket decks - only OEM ones.

 

The OEM deck will never let you tune to a "flat" curve.

There are three settings -- bass, mid, treb. No combination of adjustment will give you as flat of a curve as a 25 band EQ like in here.

 

Better yet, 2 Audiocontrol EQTs!!

 

The OEM deck will never let you tune to a "flat" curve.

There are three settings -- bass, mid, treb. No combination of adjustment will give you as flat of a curve as a 25 band EQ like in here.

And its loudness curve also varies with volume, which makes it impossible to tune out with any EQ. But the Clean Sweep is supposed to change the correction EQ it applies based upon the RMS level it's seeing from the radio. By its nature, it can't be perfect correction because of the varying RMS level of different CDs and FM stations, but from all accounts (indluding DB Nissan's), it works very well.

 

Yes but...

The loudness curve varies slightly at the lower end of the volume region.

Only at the highest points does it considerably drop bass.

When this is used in conjunction with an amplifier, it may be found that "full blast" on the stock stereo is no longer needed, either, which would make the "listening range" pretty flat.

 

True, but I rarely listen to the system wide open. The low to mid level bass boost (and I believe a high end boost as well - one day I'm going to measure it to confirm) annoys the crap out of me.

 

True, but I rarely listen to the system wide open. The low to mid level bass boost (and I believe a high end boost as well - one day I'm going to measure it to confirm) annoys the crap out of me.

The bass roll-off at high volume and the bass boost at lower volumes drove me crazy. I was constantly adjusting the bass setting and the gain knob for the sub's amp. I have found that setting the HU at 30% volume and leaving it there and using the master volume control knob to work the best for me. I have also listened to Crystal Method, Stanley Jordan and Joe Satriani and the stereo imaging sounds much better than my Harmon Kardon home theater receiver. Of course the soundstage in the truck is much smaller but the sound clarity is unbelievable.

I'm sure JL Audio or another company will come out with one that will incorporate a microphone for active EQ tuning. That's the only way this can be improved upon. Especially since every vehicle cabin differs from one another.