ART Cleanbox frequency response

Yeah, I'll stick with my BFD + X-30 combo...... haven't seen anything beat it yet.....

brucek

What about the Aphex 124A? Cost quite a bit more than the CleanBox, but the specs look decent.
http://www.aphex.com/124A.htm
http://www.sweetwater.com/store/detail/124A/

That's scary. Has anyone done similar testing with a BFD?

Yes, the BFD is much better.

-0.6 dB @ 20 Hz
-1.1 dB @ 10 Hz
-2.5 dB @ 5 Hz
-7.2 dB @ 2 Hz

Here's a comparison.

Ikka,

Can you throw in the SMS-1 into that chart?

Thanks

I can, but not until I get back home (around two weeks).

edit: See below.

Steve I missed previous input about HK recievers. Please give me a brief reply on findings since I am running a 635. Thanks

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HK 635 Denon 1920 Onix 750 Rockets Sound Splinter RLP15 Sono

Ever used REW software Nick? You could check your own receivers response fairly easily.

brucek

If the EQ settings are used at all, a highpass filter is automatically engaged based on the description of the subwoofer. There should be an option menu that asks how large of a subwoofer driver you are using, and the largest choice is a 15". I forget the specific center frequencies of the highpass for each driver size, but they were all too high for a LLT.

As long as you leave the EQ feature off, I think you will be ok.

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My System
LLT Explained

This is something I posted on AVS Forum after reading this thread. Can someone advise pleas? Thanks and happy 4th to everyone!

Ok, was just browsing through and saw what the Art Clean box does to the FR and considering i'm using this for a subwoofer application -5.4db at 20hz etc. is not exactly desireable. So my question now becomes can I just hook the QSC PLX3602 up directly to the LFE line level output of my reciever by using either a RCA to XLR or RCA to TRS jack?

My reciever is a Pioneer 1015TX in which the manual indicates output specs on the RCA connections of 335mv and 2.2 k-ohms. The input sensitivity of the PLX3602 is listed as 1.25 volts rms and 10k-ohms unbalanced and 20k-ohms balanced. Will this work? Any advice is appreciated.

Yes, it will work. I suggest that the spec from the pioneer of 335mvolts is the nominal output and indicates the standard consumer nominal level of -10dBV (which is ~316mvRMS). The normal maximum output of that interface would then likely be a standard +2dBV (which is 1.26mvRMS). That is consistent with the maximum spec you list for the PLX3602. Just make up your RCA to TRS (or XLR) connector and you'll be fine..

brucek

Thanks! I will probably just go pick up an adapter from radio shack. I don't know if they have RCA to XLR but i'm 99% sure they have RCA to 1/4" TRS so that's the way i'll go.

You would need an RCA to TS adapter to convert to unbalanced......



brucek

Yep, that's the one, thanks!!!

I couldn't get XLR to RCA despite trying 5 music shops so finally had to settle for male and female XLR to female Jack adaptors then male Jack to RCA adaptors.

Here's the CX2310 active crossover frequency response.
Low frequency channel: Crossover set to 930Hz max (X1). All gain settings to flat.

Not much to worry about here:

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My IB on frappr

My IB Subwoofer blog

Yeah, very good. It seems most of the Behringer stuff has excellent low frequency response..

brucek

I'm just grateful the CX2310 wasn't stealing my bass.

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My IB on frappr

My IB Subwoofer blog

What would be the downside, if any, of simply using one an EQ band or shelf filter (in a Crown XTi amp) to adjust the low end upwards (if needed, with results confirmed by measurement through FuzzMeasure, REW, or another source) as opposed to modding the Cleanbox? Besides having one filter that can't be used to address room peaks, that is.

I don't see a lot of down side. The mod to the cleanbox seems fairly simple though and even with the rudimentary tests that a few performed, it appears effective. I believe Ilkka said he would test the mod properly when he has the time, and then you could get a better idea if it was worth the effort.

brucek

I probably phrased my post badly. More succinctly, what I meant to ask was the following: what is the downside (if any) of leaving the Cleanbox as is and simply ensuring low-end response to taste via downstream EQ?