Time to go active.

[DejaWiz 5,000+ posts]

lol yeah, I wouldn't mind getting an 880PRS, but again, I don't feel like making such an investment at this point.

And I don't mind tinkering, that's half the fun in my book. The only limitation I see with the Coustic is the 3000 Hz cap for the band pass. If it went up to 4-5k, I think this thread would have died a while ago.

 

[genxx 10+ year member]

yep. Thread would be dead. Yeah atleast its not like some of the threads here lately that have been just plain stupid. People can get something out of this.

Learn about the XM-3, other options and the pain that can be involved in going active. Also how to work around some of the problems.

 

[DejaWiz 5,000+ posts]

You mean the Arc MX-3? And it's odd, but the MX-3 is about the only thing that doesn't have a dl'able OM....

http://www.arcaudio.com/arc-05/processors/mx3.htm

Does anyone have any specs or the file by chance? I'd like to know if it has 3 in + 3 out, band pass, and what the band pass high limit is.

[edit]

ehh, nevermind... here's the specs right from their web page.

3-way active crossover with sub-level remote control

High level input

Remote sub-level control

0-180 degree sub-woofer phase switch

Active bandpass switch

Butterworth 12dB octave slope

Qbass bass boost

Gold plated rca input and output connectors

Crossover frequencies : High/lowpass/bandpass 50Hz-8KHz

Crossover slope : 12dB octave Butterworth

S/N ratio : 102dB

Max output voltage: 4V rms

THD: 0.01%

Low level input voltage: 150mV - 2.5V rms

Dimensions: 6 3/16" x 6 7/8" x 1"

So that's looking to be exactly what I want.

 

[genxx 10+ year member]

Dejawiz-I meant XM-6 got ARC stuck in my head. Someone hurry hit me with a bat in the head and get it out. Sorry

I will look at the info and see. I got one but its not at my location and I have never taken it out other than to make sure it was in like new condition. If it would work I might even sell it but not sure. I will see if I can find the info for you or get some on to take a picutre for me of it or look at. If the wife is at home and not the gym, I will see what I can do to get you some answers.

 

[DejaWiz 5,000+ posts]

Grade A awesomeness man.

 

[helotaxi 5,000+ posts]

Coustic used to make an XM-3 as well.

It is entirely possible that you're worried about nothing with the XM6 as well. 3k might be plenty high for your mid and you might want a bit of underlap on the crossover to get it to sound right.

 

[genxx 10+ year member]

X2. I still think you should give it a go with the XM-6 first before doing anything else no sense jumping to many conclusions before you try it out. No need to spend money when you do not need to.

 

[DejaWiz 5,000+ posts]

Oh I will try it out and see how it goes... //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

I'm just fabricating a near-failsafe backup plan in case it turns out not to my liking.

 

[alphakenny1 10+ year member]

i think the 880prs would be a great investment (sorry haven't read the whole thread if you stated why you won't buy it). you'll have everything up front at your finger tips to tinker with.

 

[bass_lover1 10+ year member]

From the SPX OM:
Speaker Size: 1" (28mm)

Effective Diaphram Diameter: 28mm

Voice Coil Diameter: 19mm

Fs: 950 Hz

Are you sure it's the XT19 and that it'll perform well at double the Fs at 1900 Hz?

Sorry, Vifa rates their tweeters by voice coil size, 19mm ~= 3/4"

It IS the XT19, which is listed w/ a 3/4" voice coil, but 1" diaphragm.

 

[DejaWiz 5,000+ posts]

Sorry, Vifa rates their tweeters by voice coil size, 19mm ~= 3/4"
It IS the XT19, which is listed w/ a 3/4" voice coil, but 1" diaphragm.

Thank you for the clarification on this!

 

[DejaWiz 5,000+ posts]

Well shoot. It's been a long time since this thread showed any of us any love. I still haven't gone active yet for one reason: the SPX mids are somewhat midbass weaksauce.

Things I've been pondering:

1. Dump the XM-6 then break down and get an 880PRS?

2. What mids to get that will work great off-axis since they'll be in the factory door locations and respond fairly well up to around 3.5kHz in such an orientation?

3. Use the XT19's or get tweeters that exhibit better off-axis performance since they will be in the factory sail panel locations?

4. Decisions, decisions.....

Been doing a lot of reading over at DIYMA.

Anyone care to provide suggestions or thoughts in general?

 

[alphakenny1 10+ year member]

budget on mids? also 3.5khz is asking a lot of a mid to play. i have had great results underlapping xover pts. i feel that its great for integration between the tweeter and mid, as it it'll reduce the overlapping frequencies being played by both the mid and the tweet.

also get the 880prs. its just hard to believe they put in a L/R eq on that thing plus L/R phase control.

 

[DejaWiz 5,000+ posts]

budget on mids? also 3.5khz is asking a lot of a mid to play. i have had great results underlapping xover pts. i feel that its great for integration between the tweeter and mid, as it it'll reduce the overlapping frequencies being played by both the mid and the tweet.

also get the 880prs. its just hard to believe they put in a L/R eq on that thing plus L/R phase control.

Budget on mids: $70ish each

Budget on tweets: $40ish each

If 3.5k isn't really feasible, then I'd like to find tweeters that can play down to where a mid would start to roll off. Not saying I won't be open to the possibility of running the mids and tweets with an underlap, but I just want to have the possibility of running matching xover points so I can fiddle fvck with it without any nagging limitations.

 

[alphakenny1 10+ year member]

i'd do the ever so popular seas neo alum/textile and peerless exclusive. tweet is $30 each and mid is like $75 each. they'll mate just fine xover wise as the neos can play pretty low. npdang has his neos crossed at 1.5khz if i recall.