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Old 20th June 2012, 11:15   #1
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Default JL Audio Clean Sweep

Has anyone used the JL Audio Processor ?
It das some very good reviews on international audio forums and is considerably cheaper than RF, alpine and JBL Processors.
I am planning to buy a Punto soon and don"t want to get rid of the stock HU.

JL Audio CL441dsp CleanSweep® Sound processor for use when adding amps and speakers to a factory system at Crutchfield.com

Would i be needing a load sensing turn on trigger?
JL Audio CL-LSA CleanSweep load sensing turn-on trigger at Crutchfield.com

What is JL Audio CleanSweep Signal Summing Interface?
Amazon.com: JL Audio CleanSweep Signal Summing Interface - Black Finish: Car Electronics


Do i need the signal summing interface ?

As i understand i will be able to run only front speakers and sub off the JL clean sweep which is exactly what I want.

I also plan to install 2 amps a 4 channel and a mono. Will the clean sweep be able to support 2amps?

I plan to use the 4 channel to bi-amp the front speakers.

For the 4channel amp I have my eyes set on JL Audio JX360/4 or focal Solid 4
Mono I am keen on JL Audio XD600/1 or focal Solid 1

Not too sure about speakers and sub. Don't know where to audition a few installs.

Overall I was thinking of getting a complete JL setup including speakers and sub. I listen to a lot of electronic music so ideally i don't like the treble too sharp and would appreciate tight mid bass.
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Old 20th June 2012, 17:05   #2
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Default Re: JL Audio Clean Sweep

Quote:
Originally Posted by cooldude1988765 View Post
Has anyone used the JL Audio Processor ?

Do i need the signal summing interface ?

I also plan to install 2 amps a 4 channel and a mono
I plan to use the 4 channel to bi-amp the front speakers..
I have not used the JL but will tell you what I know.

a. You do not need the summing interface. That is optional.

b. You should not need the CL-LSA either as it is only for old stereos that dont out out enough to turn the CL on. If you do you can order this later (I dont know enough about the Punto OEM HU).

c. The JL gives you Front and Rear outputs. You could use the front channels for the front speakers and the rear channels for the sub. However if you want to biamp the front channels your 4 ch. amp would have to be one that has a XO (LPF for the woofer and HPF for the tweeter). Unlike the MS8 or Alpine the JL does NOT give you a subwoofer output.

Last edited by navin : 20th June 2012 at 17:06.
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Old 20th June 2012, 17:59   #3
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Default Re: JL Audio Clean Sweep

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Originally Posted by navin View Post
c. The JL gives you Front and Rear outputs. You could use the front channels for the front speakers and the rear channels for the sub. However if you want to biamp the front channels your 4 ch. amp would have to be one that has a XO (LPF for the woofer and HPF for the tweeter). Unlike the MS8 or Alpine the JL does NOT give you a subwoofer output.

So JL has basically 2 preouts like some HUs so I can use front and rear/sub correct?
Also what i meant by bi-amping is convert the 4 channel to 2 channel; i.e say i have only a single 4 channel amp and i need to power front speakers and sub i would use channel 1&2 to power 2 front speakers and channels 3&4 together to power sub.
I was wondering if i could use channel1&2 (Together) to power 1 front speaker and channel 3&4(Together) to power the other front speaker. I will still be using the stock crossover, the amp will be connected to this.
I will still be running a passive set-up not active.

As i understand a passive setup is one where the crossovers are still in place and tweeter and woofer(component) are connected together to an amplifier.
An active setup is one where the crossovers are removed and tweeter and woofer are seperately connected to an amp.
Please do correct me if I am wrong.
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Old 21st June 2012, 10:50   #4
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Default Re: JL Audio Clean Sweep

Quote:
Originally Posted by cooldude1988765 View Post
So JL has basically 2 preouts like some HUs so I can use front and rear/sub correct?

Also what i meant by bi-amping is convert the 4 channel to 2 channel; i.e say i have only a single 4 channel amp and i need to power front speakers and sub i would use channel 1&2 to power 2 front speakers and channels 3&4 together to power sub.

I was wondering if i could use channel1&2 (Together) to power 1 front speaker and channel 3&4(Together) to power the other front speaker. I will still be using the stock crossover, the amp will be connected to this.

I will still be running a passive set-up not active.

As i understand a passive setup is one where the crossovers are still in place and tweeter and woofer(component) are connected together to an amplifier.
An active setup is one where the crossovers are removed and tweeter and woofer are seperately connected to an amp.
Please do correct me if I am wrong.
1. The JL Audio gives you 2 pairs of outputs. Front Right and Left and Rear Right and Left.

2. You can connect the Front Right and Left to 2 channels (1-2) of a 4 channel amp and Rear Right and Left to the other 2 channels (3-4) of a 4 channel amp.

3. If the 4 channel amp allows you to bridge channels 3 & 4 to drive a sub the amp will also have a LPF that determines what frequency the amp crosses over to the subwoofer. Usually (but not always) such amplifiers also have a HPF allowing you to limit the low frequencies being sent to the front speakers (hence reducing distortion in the front speakers).


There is always some crossover that decides if the signal should be sent to the woofer or tweter.

An Active crossover comes before amplificaion, a passive crossover comes after amplification. Active Crossovers are called "active" because they need a power supply (like a HU or Amplififer does). Passive crossovers do not need a power supply. There are Passive crossovers that can be implemented before amplification (these are called Passive Line Level Crossovers) but these are rare and a very small niche market so ignore this.


Active Crossover:

HU ---> JL Front ---> Active Crossover+---LPF--> LP Amplifier ---> woofers
=========================+---HPF--> HP Amplifier ---> tweeters

Passive Crossover:

HU ---> JL Front ---> Amplifier---> Passive Crossover-+--LPF ---> woofers
===================================+--HPF ---> tweeters
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Old 21st June 2012, 14:28   #5
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Default Re: JL Audio Clean Sweep

Power Specifications - Full Range Channels
RMS Power @ 4 ohms 70 watts x 4 channels
RMS Power @ 2 ohms 90 watts x 4 channels
Bridged RMS Power 180 watts x 2 channels
Amplifier Specifications
Amplifier Class AB
Number of Channels 4
Total RMS Power Output 360 watts
Maximum Input Gauge Size 4 AWG
Minimum Impedance Unbridged 2 ohms
Minimum Impedance Bridged 2 ohms
THD at Rated RMS Power 1%
Speaker Level Inputs Yes
Preamp Outputs 1 pair
Built-in Crossover Low-pass (LP)
High-pass (HP)
High-Pass Crossover Frequency 50 - 200 Hz
Low-Pass Crossover Frequency 50 - 200 Hz
Signal-to-Noise Ratio 100 dB
Bass/Gain Remote No
Fan Cooled No
CEA-2006 Compliant No


The above are the specifications of the JL amp; It says I can bridge 4channels to make it two, also it has a high pass and low pass filter.

So it is possible to bi-amp speakers correct?

EDIT
Is this Possible ?

HU ---> JL Front ---> Amplifier (bridge Channel 1&2){set HPF on the amp itself}---> Passive Crossover---> left front woofer+tweeter
HU ---> JL Front ---> Amplifier (bridge Channel 3&4){set HPF on the amp itself}---> Passive Crossover---> right front woofer+tweeter

In simple terms can i use 2 channels of the amp to power a single speaker ? (Connected the same way as i would have if i used only 1 channel)

Quote:
2. You can connect the Front Right and Left to 2 channels (1-2) of a 4 channel amp and Rear Right and Left to the other 2 channels (3-4) of a 4 channel amp.
I do not want to do this as I intend to purchase only the front pair of speakers.

Let me explain to the best of my abilities what I intend to do

HU-->JL Clean sweep front channels (2 channels)--> 4 channel amp--> front speakers (channel 1&2 for one speaker, channel 3&4 for the other speaker)
HU-->JL Clean Sweep rear channels (2 channels)--> Mono amp --> 12" Sub Woofer

I do not need the rear speakers as I will be driving alone 90%of the time.
Also can i connect rear speakers directly to HU by avoiding the JL clean sweep altogether? In case i want to retain the stock speakers at the back.

Last edited by cooldude1988765 : 21st June 2012 at 14:47. Reason: More questions :p
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