|
|
Post by wizardofoz on Apr 10, 2013 22:05:13 GMT -5
I know the XPA-X apms all had/have 32db gains but the UPA-x (1,2,5 & 7) did they all have the 32db gain too? Keith appreciate if you could or any other from Emotiva staff could confirm this. emovault.org/EmoVault/default.aspx lists all as 32db but I would like to have it confirmed for sure as I am about to integrate 2 XPA-1's and 2 UPA-1's plus a UPA-2 into an active speaker setup and need to confirm all the gains are the same across all the amps. Ireally do wish Emotiva would bring back the old retired gear pages - most of this gear is still in use and from time to time one needs to check things if buying or selling or just general questions come up. |
|
|
|
Post by audiohead on Apr 10, 2013 22:11:15 GMT -5
UPA-1 has a gain of 32 to high for my blood but I make do.
|
|
geebo
Emo VIPs 
"Too bad that all the people who know how to run the country are driving taxicabs and cutting hair"
Posts: 24,188
|
Post by geebo on Apr 10, 2013 22:15:59 GMT -5
|
|
|
|
Post by garbulky on Apr 10, 2013 22:33:53 GMT -5
I can confirm that UPA-2 is 32 db gain
|
|
|
|
Post by ossif on Apr 11, 2013 0:03:01 GMT -5
Is there a way to reduce it? Different resistors on the input side? The high gain causes some problems with room measurement on my onkyo pre/pro.
|
|
|
|
Post by pedrocols on Apr 11, 2013 0:09:36 GMT -5
Is there a way to reduce it? Different resistors on the input side? The high gain causes some problems with room measurement on my onkyo pre/pro. You can try attenuators... |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 11, 2013 0:26:20 GMT -5
Go to the Emotiva.com home page. Look down below Resources and click on Tech Support, click on Manuals, then click on Ultra Series Amplifiers (2008 - 2012). Emotiva could have made this more intuitive and easier to find. This will open: emotiva.com/resources/manuals/retired/ultra_amp_manual.pdfBTW, IMO there is no reason you need to have all the amps have the same exact gain. That difference will be compensated for in the speaker setup process which will balance out any differences in amp gain. Sorry, I missed this: " active speaker setup." What speakers are we talking about here, powered speakers??? |
|
geebo
Emo VIPs
"Too bad that all the people who know how to run the country are driving taxicabs and cutting hair"
Posts: 24,188
|
Post by geebo on Apr 11, 2013 8:21:57 GMT -5
Attenuators, as already suggested, should do the trick. They won't reduce the gain but will reduce the input for any given volume setting. Essentially the same thing from the Onkyo's point of view..
|
|
|
|
Post by wizardofoz on Apr 11, 2013 9:51:56 GMT -5
Sorry, I missed this: " active speaker setup." What speakers are we talking about here, powered speakers??? My Linkwitz LX521's ... if they were powered I wouldnt need 6 amps  The amps will be un as 2 XPA-1 for the Bass bins with 2 drivers in series (8ohms total) 2 x UPA-1's for each Mid range and the UPA-2 shared for each Tweeter ... 3 amp channels per side. The active crossover demands 3 amps with the same gain per side. This will be perfect. The other option is UPA-1's for the bass, UPA-2 for the mids and a mini-x for the tweeters...but I feat the Mini-x might have much lower gain which would not work well. I cant find any reference to the Mini-x gain...any one know? ***EDIT*** I just found at 29db in the vault pages...why dont they have this stuff on their own site or in the darn manual...that might be good too. While I am winging, why also cant they do metric sizes and weights too...they use all metric parts....c'mon guys!!! My LX521 build site is here walaneh.com/LX521/ |
|
|
|
Post by knucklehead on Apr 11, 2013 10:25:13 GMT -5
Ireally do wish Emotiva would bring back the old retired gear pages - most of this gear is still in use and from time to time one needs to check things if buying or selling or just general questions come up. ***EDIT*** I just found at 29db in the vault pages...why dont they have this stuff on their own site or in the darn manual...that might be good too. I've asked this question many times myself. Is it so hard to keep the product page and move it to a retired gear section? It was done before they redesigned the web pages to make them "New and improved". Sometimes "New and Improved" isn't as 'improved' as they'd like to think. The web archive pages are handy but are incomplete - and it sucks compared to the 'real thing'. How about it Emo - how about putting the retired gear pages back up? |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Apr 12, 2013 5:35:07 GMT -5
Sorry, I missed this: " active speaker setup." What speakers are we talking about here, powered speakers??? My Linkwitz LX521's ... if they were powered I wouldnt need 6 amps Sorry for my confusion, but nowhere in your opening post did you mention Linkwitz LX521's. They certainly are a little different than your average speakers. The LX521 Analog Signal Processor splits the broadband line level input signal into woofer, mid and tweeter frequency bands. It equalizes driver and baffle response for each channel and filters it with LR4 response. The midrange signal is split after the power amplifier by a passive crossover filter into lower mid and upper mid driver inputs. OK, now I get it. I was confused because you used the term "active speaker" which to me usually means the same thing as powered speaker. Maybe you meant fully active crossover design speaker or saying tri-amped might have made it more clear to this dumbnut. I should have figured this out, duh. |
|
|
|
Post by wizardofoz on Apr 12, 2013 6:27:49 GMT -5
Ah perhaps my active was a little off the mark...actively crossed over is probably a better description I guess.
|
|
|
|
Post by ossif on Apr 13, 2013 4:10:33 GMT -5
Attenuators, as already suggested, should do the trick. They won't reduce the gain but will reduce the input for any given volume setting. Essentially the same thing from the Onkyo's point of view.. I have thought of attenuators too. Any high quality recommendations? Wouldn't that be an opportunity, Emotiva? |
|
|
|
Post by garbulky on Apr 13, 2013 4:33:42 GMT -5
If you are doing linkwitz, I wouldn't even bother with anything other than perfect matches. Those things are darn resolving. I wonder if the upa-2 vs upa-1 vs xpa-1 will create a negative quality difference due to sound signature differences. My UPA-2 is very nice but it isn't even close to "perfect" for sound signature stuff. I also ran into issues with 32db gain and powerful dynamic swings which caused slight "compression" in the signal so now I'm using attenuators. My XDA-1's output even at low moderate volumes produced dynamic swings that if I had to GUESS (no measurements) were was more than the 1.3V required to drive it to full causing compression/inputoverload. Very few other people have reported this issue so it may be just me but I do know quite a few that have felt that attenuators have improved the sound. IMO, I would rather not use attenuators but I do so simply because it makes what I have sound better.
Those speakers will probably resolve detail so far beyond anything I've ever heard. I know it's costly, but I would reccomend using all the same amps and preferrably XPA-1 L's with their 29db gain when their issues get sorted out or XPA-1's or XPA-2's if you have to. I know it sounds like the bass bins may need more than the xpa-1 L's would give them but being active crossovers, I assume they wouldn't suck all the power out of the bass amps by using portions for the treble and mids right?
|
|
|
|
Post by audiohead on Apr 13, 2013 5:28:26 GMT -5
garbulky..I use "attenuator's" on my UPA-1's for the reason's you stated I know that Lonnie said don't do it and I am sure he has "his" reason for not using them,but man the gain is so high on my monoblocks I had too.I couldn't get pass 10 o'clock on the dial the amps where pulling over 4 amps each!I have talk with other Peeps that have built amps and they have said yeah use them other then that I would have had to replace my monoblocks for some with a lower gain.
|
|
|
|
Post by garbulky on Apr 13, 2013 6:25:27 GMT -5
Glad I'm not the only one. Have you ever used the XDA-1? I was hoping the XDA-2 would have slightly lower swings/output in general. I guess not.
|
|
