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Post by unsound on Feb 6, 2015 15:24:50 GMT -5
Got my shipment of 2 XPA-1Ls yesterday and got them set up today. I have balanced connectors running from my DC-1 to the XPA-1Ls, which are then powering my TAD 2201s. I previously was using the XDA-2/UPA-2 combo in this setup. Frankly, I wasn't expecting any difference at all. I just ordered them as I'd never had monoblocks and figured I'd give it a try. A couple hours of non-critical listening in Class A, and everything seems to have gone up a notch. Improvements in imaging and mids are what I'm noticing, primarily. I have no idea if the difference is due to the DC-1, the XPA-1Ls or an over-active imagination. Whatever the case may be, I'm glad I got the XPA-1Ls. And, I save me some bucks on a space heater Edit: I should've mentioned transparency. I think that's a clear standout (pun intended) - no over-active imagination there!
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Post by brubacca on Feb 6, 2015 15:26:09 GMT -5
Congratulations....
Don't worry about why you like it better, just enjoy it!
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Post by unsound on Feb 6, 2015 15:30:54 GMT -5
Congratulations.... Don't worry about why you like it better, just enjoy it! Thanks! Absolutely, it's very hard not to enjoy this! I haven't been able to get anything else done in the last 2 hours. Good thing it's a Friday.
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Post by deltadube on Feb 6, 2015 15:41:33 GMT -5
congrats on the new toys.. see novisnick for your free membership in the mono block society !!! enjoy
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Post by unsound on Feb 6, 2015 15:44:14 GMT -5
congrats on the new toys.. see novisnick for your free membership in the mono block society !!! enjoy Haha - that's right! novisnick - I expect my membership forms soon
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butchgo
Emo VIPs
The Dark Side rules
Posts: 567
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Post by butchgo on Feb 6, 2015 18:59:12 GMT -5
Just wait a few days and you will hear things changing, for the good!!!!!!!
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Post by unsound on Feb 6, 2015 19:38:23 GMT -5
Well, it's almost 5 hours and I still haven't stopped listening. Must've heard John Mayall's Jazz Blues Fusion at least 5 times and Van Morrison's Moondance Expanded version twice! I foresee a huge spike in my electric bill.
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Post by audiosyndrome on Feb 6, 2015 20:27:14 GMT -5
I'll see your two XPA-1Ls and I'll raise you three more. Enjoy your new babies.
Russ
PS- novisnick is missing my setup; I'm still not a member of the monoblock club.
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Post by unsound on Feb 6, 2015 20:55:03 GMT -5
I'll see your two XPA-1Ls and I'll raise you three more. Enjoy your new babies. Russ PS- novisnick is missing my setup; I'm still not a member of the monoblock club. Nice! I might have to wait before I can add to my stable. Let's just say I got rejected while driving to the basket on that one
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novisnick
EmoPhile
CEO Secret Monoblock Society
Posts: 27,223
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Post by novisnick on Feb 7, 2015 2:46:50 GMT -5
I'll see your two XPA-1Ls and I'll raise you three more. Enjoy your new babies. Russ PS- novisnick is missing my setup; I'm still not a member of the monoblock club. Paperwork is slow this time of year. It's the Mardi Gras season down hear in Louisiana!!
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Post by drtrey3 on Feb 7, 2015 8:19:41 GMT -5
I know where ya got dem shoes.
Trey
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Post by ocezam on Feb 7, 2015 9:20:17 GMT -5
I foresee a huge spike in my electric bill. Naw. Not unless you were just not listening before.
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Post by unsound on Feb 7, 2015 11:32:41 GMT -5
I foresee a huge spike in my electric bill. Naw. Not unless you were just not listening before. That's good to know. I, actually, listen quite a bit as I work from home. My office system is on through the day and I end up listening for about 3 hrs a day, on average.
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Post by leonski on Feb 14, 2015 20:25:57 GMT -5
Un, Now imagine BIAMP speakers with 2 of the 1Ls per speaker! You'll need a few additions to make it work, not the least of which is at least a couple new 15 or 20 amp circuits and some balanced splitters. The rabbit hole unfortunately gets even deeper if you than consider a Line Level crossover. Commercial units or DIY are both done with great success. And if you know the speakers crossover frequency and slopes, you don't have to 'reinvent' the wheel.
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Post by Gary Cook on Feb 15, 2015 2:14:56 GMT -5
From what I recall of Revel F32's is that they have a rather sophisticated cross over network ie; not a simple cross over + slope. The duplication of which in an active cross over would be next to impossible for an amateur.
Cheers Gary
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Post by leonski on Feb 15, 2015 3:33:17 GMT -5
The Revel material calls out 'high order' filters on seperate boards per 'way'. This means they are keeping the inductors (can't have high order filters without 'em!) apart. good idea. Somebody who has TESTED and MEASURED them will have more / better info. By high order? 12db per octave, 18 db per octave or perhaps 24 db per octave slopes. Alignment? Not stated. And that WOULD be a problem.
But the speaker IS setup for easy biamping which is cool. And the book even has some good drawings and more importantly, some good setup tips.
The level control part is also a little tougher to duplicate, but simply going passive biamp would be a worth experiment and use for a QUAD of the 1Ls.
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Post by boomzilla on Feb 15, 2015 5:01:02 GMT -5
In sales lingo, first order crossovers (6 dB / octave) and second order ones (12 dB / octave) used to be considered more or less "standard" slopes. 18 dB per octave and higher were considered "high-order." Of course, this convention is from 40 years ago, so now even second order crossovers may be considered "high-order." I offer this gem of wisdom at no additional charge! LOL "Alignment," by which I assume you mean "phase," is simple. If the jumpers on the speaker terminals jump from red to red / black to black (most do), then connect the bi-wires with the same polarity after removing the jumpers. No rocket science here. Thus, bi-amplification or bi-wiring need not be complicated. Keep the wire polarity straight and the internal speaker crossovers take care of the rest. Now if you're talking about bypassing the speakers' internal crossovers and replacing them with active external crossovers, you've a completely different kettle of worms. In general, don't do that, period. Unless you're a zealot hobbyist who doesn't mind destroying the resale value of multi-thousand-dollar speakers, use the internal speaker crossovers. Boom
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Post by vcautokid on Feb 15, 2015 12:49:18 GMT -5
The XPA-1L has it all. An amp I would want if I was running a passive speaker system. Lonnie and Big Dan really made a special amp here. Anybody who loves their music, yeah wow. The XPA1-L is really, really good.
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Post by leonski on Feb 15, 2015 13:33:13 GMT -5
By Alignment I meant Linkwitz-Reilly (LR) or Butterworth or Bessel.
Is that correct usage?
As for Line Level or 'passive'? I'd stay with Passive and use the speakers crossover. Either of the Line Level options would get 'sticky' if 3rd or 4th order. The Elliot Sound Products kit is an active line level AND all 4th order LR. Sums flat / phase thru the crossover region. I think if you went Passive line level, you'd end up needing inductors for 3rd / 4th orders. OTHER solutions exist but I come up short on names of companies.
In any event, I don't see enough information and don't have the means to measure. Someone who had the SCHEMATIC for the Revel crossover could be of some help to anyone want to attempt the big changes needed. And don't forget, if you SAVE all the stuff, and the Revel crossovers ARE all on seperate boards, it is not a deal breaker to put it back the way you found it. Just take plenty of photos and Document what you do.
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Post by unsound on Feb 15, 2015 16:17:29 GMT -5
Un, Now imagine BIAMP speakers with 2 of the 1Ls per speaker! You'll need a few additions to make it work, not the least of which is at least a couple new 15 or 20 amp circuits and some balanced splitters. The rabbit hole unfortunately gets even deeper if you than consider a Line Level crossover. Commercial units or DIY are both done with great success. And if you know the speakers crossover frequency and slopes, you don't have to 'reinvent' the wheel. I'm using the 1Ls with TAD 2201, which cannot be biamped - thank goodness! My Revels, OTOH, can be biamped and the KEFs triamped ! Although, the cost to do that would be prohibitive as it would include me finding a new house to live in
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