I finally integrated my subs in both HT and 2ch.

Marbles · « **on:** 25 Jan 2005, 09:01 pm »

I just received an NHT X2 active XO and it makes it very easy to integrate my subs into both my HT and 2 channel systems. I wish this unit had been available years ago!!

Anyway if you have a combined 2 channel (seperate pre-amp) and HT system and want to have your subs play in both systems, this unit may just be the thing for you.

I run my HT LFE into one input and run one set of outputs from my two channel pre to my amps and run my RM40's full range like normal, and I run a second set of outputs from my pre to the XO. I just use the low pass side to the subs.

There are seperate volume controls for 2 channel and LFE, so once set, it is very seemless going between the two systems.

ctviggen · « **Reply #1 on:** 25 Jan 2005, 09:48 pm »

Hey Marbles,

Do you have stereo subs? Do you run your RM40s full range and also run the subs?

jermmd · « **Reply #2 on:** 26 Jan 2005, 12:04 am »

Marbles,

What frequency is the low pass set at?

For Home theater, are the RM 40's set to large? If small, what is the crossover frequency?

I have the ACI Maestro sub (a truly awesome sub) integrated into my dual setup in a slightly different manner that works very well for me. The Maestro comes with a proprietary amp that has two seperate inputs. One is a single sub input for the pre/pro's sub out. The other input, the one I use, is a Left and Right speaker input that incorporates a variable low pass crossover. The pre/pro runs the front speakers large and the front right and left speaker outputs go to the seperate (2-channel) preamp inputs. One set of the 2 channel pre's outputs goes to my amp and then to the bass speaker posts on my RM30's and the other outputs go to the Maestro amp, the signal is crossed over with the lows going to the sub and the highs going to my amp and then the treble speaker terminals on my RM30's. It's complicated but works.

Joe M.

Marbles · « **Reply #3 on:** 26 Jan 2005, 12:56 am »

Quote from: ctviggen

Hey Marbles,

Do you have stereo subs? Do you run your RM40s full range and also run the subs?

I do have 2 subs, but they are currently set up on the same signal and I have them in the same location, the front right hand corner. I will be splitting them as soon as I receive a stereo eq from Scott Faller. Currently they go through a mono eq. and have flat response + - .5db from 20 to 80hz.

I do run the RM40's full range and bring the subs in to augment the bass in 2 channel.
It seems to help 2 areas, the bass below 31 hz, and for whatever reason the mid bass area, I'm not sure why this would be .

I low pass the subs at 70 hz for both 2 channel and HT.

I set the 40's to "small" for HT.

John Casler · « **Reply #4 on:** 26 Jan 2005, 05:53 am »

Quote from: Marbles

I just received an NHT X2 active XO and it makes it very easy to integrate my subs into both my HT and 2 channel systems. I wish this unit had been available years ago!!

Anyway if you have a combined 2 channel (seperate pre-amp) and HT system and want to have your subs play in both systems, this unit may just be the thing for you.

I run my HT LFE into one input and run one set of outputs from my two channel pre to my amps and run my RM40's full range like normal, and I run a second set of outputs fro ...

As I mentione in another thread, I recently started using the high pass section for my 626Rs and even though there is more cabling involved, it doesn't affect the sound to the negative that I can hear.

I actually "searched and searched" to find a unit that would allow me to run HT and 2 channel in one system.

Then 2 weeks after having it, I "seperated" them into two systems in different parts of the room.

However, I still can run a long IC to it and "supplement" my HT sub with 4 LARGERS.

It is great!

John Casler · « **Reply #5 on:** 26 Jan 2005, 06:00 am »

PS:

I should also mention that I also like it because it:

1) Has XLR ins and outs
2) Has Boundary adjustement
3) Has Phase adjustment and inversion switch
4) Has Seperate Bass Gain Adjustment for stereo subs and LFE
5) Has Continuosly Adjustable Frequency Low Pass
6) Has 12v trigger and auto on
7) Has good flexibility in the High Pass

Allows either Stereo or Mono Subs for 2 channel stereo

And several other good features

ctviggen · « **Reply #6 on:** 26 Jan 2005, 01:32 pm »

Well, thanks for this thread. I found the same crossover on clearance and purchased it. I've come to believe that my Proceed AVP has a bug in it that prevents it from correctly operating with stereo subs. However, with the X2, I'll be able to have stereo subs and still use my dual Largers for LFE. I may also try to work in my SVS during movies only -- I might put the SVS into the room to get more bass coming from behind/on the side during movies.

ted_b · « **Reply #7 on:** 26 Jan 2005, 04:03 pm »

Quote from: ctviggen

Well, thanks for this thread. I found the same crossover on clearance and purchased it. I've come to believe that my Proceed AVP has a bug in it that prevents it from correctly operating with stereo subs. However, with the X2, I'll be able to have stereo subs and still use my dual Largers for LFE. I may also try to work in my SVS during movies only -- I might put the SVS into the room to get more bass coming from behind/on the side during movies.

I'm in the "you snooze, you lose" category. Saw it there last night and almost bought it. Went there this morning and they said "someone bought it an hour ago"! They're checking on more.....anyway, good find, Bob.

Ted

ctviggen · « **Reply #8 on:** 26 Jan 2005, 04:22 pm »

Ted,

I did the same thing -- I almost bought it last night, too, then I bought it this morning. What's weird is that -- other than that site -- I can't find any information on the X2. Even the NHT site has no information on it (for the X1, it says "see the X2 if you don't have NHT speakers," but I can't find any information on the NHT site about the X2). I was hoping to download a manual for it. I've also never heard of the site I've ordered it from. Anyway, there are also Marchand active crossovers, which you can order to do yourself or buy already built. I was thinking of going that way, too, once I realized that my processor won't correctly deal with stereo subs.

I'll let you know what I think of the X2.

Marbles · « **Reply #9 on:** 26 Jan 2005, 04:37 pm »

I bought mine from John Casler and was happy with the price and service..

ctviggen · « **Reply #10 on:** 26 Jan 2005, 05:22 pm »

Now you tell me that John has them! It's too late for me, unless this company doesn't send the X2 to me.

John Hidley · « **Reply #11 on:** 27 Jan 2005, 12:05 am »

For some strange reason, the X2 owner's manual has dissapeared from the NHT site. I'm trying to get it put back up right now. In the meantime, if anyone wants a copy send me a PM.

John Casler · « **Reply #12 on:** 27 Jan 2005, 12:12 am »

Quote from: John Hidley

For some strange reason, the X2 owner's manual has dissapeared from the NHT site. I'm trying to get it put back up right now. In the meantime, if anyone wants a copy send me a PM.

Hi Jack,

Welcome to Audio Circle!

Glad your here since a few of my clients might have X-2 questions for you.

Nice little unit.

I picked one up for my personal system some time ago and find it very useful.

John Hidley · « **Reply #13 on:** 31 Jan 2005, 10:42 pm »

The NHT X2 crossover is now back on the NHT website.

ctviggen · « **Reply #14 on:** 3 Feb 2005, 06:55 pm »

My NHT X2 has arrived, and I'll be putting it through its paces this weekend. Since I have interconnects for biamping, I'm going to split the output of my preamp into my amp for my RM40s and into the X2. I'll use the X2 for stereo subs. I'll be running the RM40s full range and supplementing the bass with two VMPS Largers, each run off of one channel of an amplifier. I've seen a few people who use a similar type of configuration. I'm going to use an ETF program to determine what settings should be used with the X2. If the low bass gets too pronounced or I can't get a flat enough response, I'll run the RM40s using the high pass output of the X2 (this will necessitate yet more interconnects, so that's another reason for me to try the other way first). I'll post my results.

ted_b · « **Reply #15 on:** 3 Feb 2005, 07:11 pm »

I'll be doing the same (no y-jacks, single amp) with my RM/X's and will post my feedback. X2 should arrive next week.

Ted