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New amp is making me grin from ear to ear =) - Page 2

post #31 of 4970
This does not sound correct. The rail voltages are not likely that high on a typical home amplifier. You can look at the equations given on the page below, which compares power and current for A/B amps. Based on Ohm's law, a 90V rail is going to be over 1000W at 8 ohms theoretical, and I recall that a 100V rail does give over 1000W at 8 ohms.

http://www.bcae1.com/hcvsnohc.htm


Peak power is correct, but not 'rms' ratings...90v rails seems to be the sweet
spot for circuit designers for high powered home amplifiers for 500w @ 8 ohm
(rms) amplifiers give or take. ((90v x 0.7)^2 divide by 8 ohms = ~500w


Most typical home amps do not have 2 Ohm ratings, and if they do they would require very massive heatsinking without fans.

I was giving home audio amplifiers the benefit of the doubt and referring to
the high end models for comparison. The typical home audio amplifier is
not rated for 2 ohms/ch.
post #32 of 4970
Got you Riffman, You're correct that I could never run this thing that loud..I'd be deaf big time!!!!!!!!!!!!!!!

Man, we have got to get one of these amps and a top of the line consumer amp in the same room..

brickie
post #33 of 4970
Of course i'm sure all that have read my posts on this will understand what i'm about to say..But what really surprised me was how musical this amp is.this I was not expecting at all!!!I though tit would be pure brute power and force for movies, but not refined and musical...IT IS!!!!!!!!!!I mainly bough thtis for movies but am falling in love with music all over again!!!

brickie
post #34 of 4970
heres the pic of my music listening room now. notice the older xls in the rack.
LL
post #35 of 4970
Riffman, how does those speakers sound? Looks like you're getting ready for a serious gig..LOL

brickie
post #36 of 4970
hell man...these are small!! I also work for a sound company in town here, doing live gigs and what not. These are tiny compared to that gear.

for a stage concert outside (very small) we will use 2 Dual 18" bass bins on either side of the stage, and then 2 horn loaded tops for the mid/hi's. thats the stuff im used to.

This stuff sounds good to me man. But I am far from an audiofile. I Like the clarity and crispness they give. Most people will tell you that horns add coloration. but i dont' really notice. these sound really good with music.

I'm not really happy with these as fronts for a home theater though. The frequency response is only up to 16 khz + or - 10db. You guys may think im nuts, but i can hear the lack of clarity in movies. I think these are going to get used as the surrounds for my outdoor theater setup. I'm gonna get some EV stuff for the fronts. They are up to 20 kHz + or - 3db.
post #37 of 4970
Where are yall getting these amps from. I need to get one to drive my SVS 16-46 sub.
Allen
post #38 of 4970
Believe it or not,Ebay is the best source for them.

brickie
post #39 of 4970
Quote:


Originally posted by brickie
I totally agree with that..Huge pwoer reserves wether or not you use them or not makes a HUGE difference!

brickie

Me three. I am not smart enough to claim that those who say that there is a difference in how amps of the same power rating sound are wrong -- but the inference is there. I think that there is no question that a huge difference in power between two amps -- no matter the brand -- makes a huge difference in the quality of the sound. In fact, next only to the quality of the speakers, I believe amplifier power is the most important variable in any home sound system.
post #40 of 4970
Hey, Iv'e sung the praises of these amps as much as I can!!I only hope those that need amps for their system give them a demo.If not, you're really not doing that wallet of yours justice!

brickie
post #41 of 4970
Quote:


Originally posted by gwsat
Me three. I am not smart enough to claim that those who say that there is a difference in how amps of the same power rating sound are wrong -- but the inference is there. I think that there is no question that a huge difference in power between two amps -- no matter the brand -- makes a huge difference in the quality of the sound. In fact, next only to the quality of the speakers, I believe amplifier power is the most important variable in any home sound system.

I was reading an article on live sound applications, and the person doing the equipment selection and setup uses a 3:1 power ratio. Whatever the speaker is designed for, he selects amplification that is 3 times that level.
post #42 of 4970
any integrated pro amps available?
also, if a digital amp's efficiency is not a priority, what are the[other] advantages of the carverpro ZR 1000/1600? its pretty expensive compared to others.
post #43 of 4970
Quote:


Originally posted by thylantyr

Peak power is correct, but not 'rms' ratings...90v rails seems to be the sweet
spot for circuit designers for high powered home amplifiers for 500w @ 8 ohm
(rms) amplifiers give or take. ((90v x 0.7)^2 divide by 8 ohms = ~500w

I stand corrected on the peak vs. RMS ratings. However, I think there is not so much difference as people think. The only difference, at least to me, is that the amps are marketed to the pro user market. Any good company will try to make the best sounding amp they can within the required budget and feature list. The high-end audiophile amps have a lot higher budget for the design and minimal features. But there are companies making these styles of designs, like Hafler, Hot House, etc... for the pro market. Hafler has fan less models with matched J-FET input and MOSFET output devices.

I mean, if you look inside you might wonder, like for example, the Plinius inside pics on the P8 they are using ribbon cable for the low level signals. People would probably wonder why there is not some thicker "audiophile" wire like other brands might use. But in the end it's just how does the thing sound.
post #44 of 4970
Quote:


Originally posted by F355
any integrated pro amps available?
also, if a digital amp's efficiency is not a priority, what are the[other] advantages of the carverpro ZR 1000/1600? its pretty expensive compared to others.

I cannot think of any Integrated pro amp.

As far as price goes, it depends on where it is made. Most pro amps are US made, but some of the units are made in Asia. The ZR is made in the US I think, while the Crown XLS they are talking about is made in China. In the pro market, the US made stuff is more expensive, while the Asian made stuff is lower, as you would expect. However, in the home/audiophile market, the made in US and made in Asia stuff seems to be sold at around the same pricing.
post #45 of 4970
thanks keepinitcool,
lemme rephrase my question.... the carverpros SEEM to be expensive coz they use tripath's digital technology. other than high efficiency, is there ANY other benefit of tripath's technology? a strong , conrolled low end? any other?
does the tripath technology make it better than most pro amps out there?
i hope tubeguy44 sees this question.
post #46 of 4970
ANY other benefit of tripath's technology?

Tripath did all the hard work on making a 'digital amplifier' operate
full bandwidth :hehe:

...and anyone can buy their modules and build an amplfiier, the hard work
was done .... even DIY'ers can buy their module and build one. A manufacturer
who offers tripath in their design doesn't have to do all the R&D if they
can buy an 'off the shelf' chip to do that job.

post #47 of 4970
Maz,
Congrats on the amp. I too, am thinking of going this route and getting one of these. I'm wondering if the XLS 602A would be worth an extra hundred bones, any thoughts? Also, of the online e-tailers, which of these can I trust to order from?
post #48 of 4970
Thread Starter 
As Brickie also mentioned you can't do much better than EBay for these amplifiers. If I'm not mistaken you don't even have to send a receipt or anything with the warranty card to qualify for the 3-year no fault warranty, which is a GREAT warranty.

As far as the XLS-602A, I'm not sure if you'll need that much power. What kind of speakers are you running and do you know their sensitivity? I'm pushing some speakers that handle 250w RMS and are 88db sensitive and the XLS-402A is DESTROYING them
post #49 of 4970
Quote:


Originally posted by darryl b
i'm primarily watching movies in my theater. i have a 7.1 setup with paradigms studios 100s and a paradigm studio center speaker. there are two svc pc plus 20-39. i.m using a sony da4es receiver now. i'm thinking of replacing the sony with a yamaha rx2400 and a gemstone 7.1 amp.

would these crown amps fit easily into such a set-up? should i consider crowns in place of the gemstone($2,499.0) howmany crown amps wolud i need?

darryl

darryl -- I can't comment on the comparative qualities of the Crown v. Gemstone amps but I can recommend the Yamaha RX-V2400 as an outstanding pre/pro. I use external amps to drive both my passive subwoofers and my front speakers with my 2400 in a 7.1 configuration -- I use the 2400's internal amp to drive the center, surround, and back surround channels. The results have been great.
post #50 of 4970
Quote:


Originally posted by Mazeroth
As Brickie also mentioned you can't do much better than EBay for these amplifiers. If I'm not mistaken you don't even have to send a receipt or anything with the warranty card to qualify for the 3-year no fault warranty, which is a GREAT warranty.

As far as the XLS-602A, I'm not sure if you'll need that much power. What kind of speakers are you running and do you know their sensitivity? I'm pushing some speakers that handle 250w RMS and are 88db sensitive and the XLS-402A is DESTROYING them

I agree with Mazeroth. The 402 is VERY capable!!! The 602 while worth it, is not necessary at all..Unless of course your speaker are that demanding..You won't find a better price than ebay, and Mazeroth is correct, about no recepit for warranty.

If you do decide to go "etailer" then look at Sweetwater.com . Their service was tremendous and fast when i ordered some adapters from them.But expect to pay extra, almost half the amp cost in doing so.

brickie
post #51 of 4970
I searched Ebay for Crown, xls & 402. the only thing I came up with was a Crown K1 amp. Do you have the link to the person you have been dealing with.
Allen
post #52 of 4970
http://cgi.****.com/ws/****ISAPI.dll...tem=3729833963

Here is the auction i won.Where the * is at type ebay in there...2 places, or you can get to it by item # at end of link.

brickie
post #53 of 4970
Quote:


Originally posted by brickie
I agree with Mazeroth. The 402 is VERY capable!!! The 602 while worth it, is not necessary at all..Unless of course your speaker are that demanding..You won't find a better price than ebay, and Mazeroth is correct, about no recepit for warranty.

If you do decide to go "etailer" then look at Sweetwater.com . Their service was tremendous and fast when i ordered some adapters from them.But expect to pay extra, almost half the amp cost in doing so.

brickie


Thanks for the replys, I came up with a few places to buy these from, after doing a search, what do you al think of these?

http://www.topdjgear.com/crown-xls-402.html

http://cgi.msn.*********/ws/eBayISAP...tem=3733803421

http://cgi.msn.*********/ws/eBayISAP...tem=3733994568

If the links do not work, try copy/paste.
The shipping charges seem a little high to me, from the ebay stores.

Also, what is the name of the cable that allows RCA to XLR connections?

Thanks,
Terry
post #54 of 4970
javascript:simpleDialog('http://store1.yimg.com/I/topdjgear_1796_55384608','Crown XLS-402A Amplifier')

hope this works..

brickie

okay i guess it didn't..Can't figure how how to put in pics for the life of me!
post #55 of 4970
top link appear sto be okay..never used them..price is not bad compared to other etailers AWAY from ebay. I wouldn't pay more than $240 though for this amp..IT'S WORTH MORE!!!!!!!!!!!!!!!!!!But can be had much cheaper.

God I hate the fact you just can't link to an auction site!!! going to take a look at them now.

brickie
post #56 of 4970
Okay, went and looke dat both ebay auctions.The 1st is the place where I got mine from.Great service and shipped fast as promised.2nd place I would assume is okay as well..Prices are only off by dollars when you factor shipping which yeah is a little high, but still cheaper than anywhere else! which is what you have to look at.

here is the link for the cable you would need..it could be built but for the price these are nice.i have these.

http://www.bhphotovideo.com/bnh/cont...nid=ATjIrbLY7y!2030833676?O=productlist&A=details&Q=&sku=133531&is=REG

brickie
post #57 of 4970
Thanks for the quick replys, brickie. And thank you the information. As to the cable, bare with me, just wanna make sure I get it right. I believe it would be a either male RCA to XLR male, (if I run straight from Pre-to-Amp) or a female RCA to male XLR (if I use another RCA to RCA cable). Correct? I tried the link you provided for the cable, but only took me to the home page of the site. Copy&Paste didnt work either.

Terry
post #58 of 4970
Don't know how much of an effect this will have, but the THD and damping factor specs on the xls series are not very good.
post #59 of 4970
Oh, and btw. I would be using this amp to power a set of Magnepan MG-IIb's. These speakers start to roll sharply past 16Khz. And they love to suck the power out of amp. But, Oooooooh do they still sound good.
post #60 of 4970
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