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Post by tonycamphd on Aug 27, 2015 15:18:24 GMT -6
I've read pages and pages of reviews on the hypex Ncore400, they may just be the greatest amps ever! haha, and they are class D! It's hard to believe, but I do, the audiophool dudes even went nutz on them claiming superiority over amps that cost 10's of 1000's, our bud Danduerloo uses these and swears by them, i've heard from others including JK that Dans monitoring rig sounds insane, i will be getting these at some point for sure. www.hypex.nl/product/2012-11-23-13-41-35/nc400.htmlWell, I thought it had a smoother top and bigger bottom...but it also was $2000. not any more, i think they are about $1,200 for the pair before building(the build is ultra easy for about anyone as they are kinda pre assembled to a very large degree), they appear to be world class on a level that is almost unobtainium if you read the reviews, i need to find out eventually.
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ericn
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Post by ericn on Aug 27, 2015 15:36:14 GMT -6
Hypex is great except on the top end True ribbons not AMTs and Be drivers become very harsh and un-natural sounding! Reminds me of bob carvers amazing speakers the synths sound so real and the real instruments so fake, but with Hypex this is just at the top end with great Tweets. You can tame it with different drivers .
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Post by littlesicily on Aug 27, 2015 15:43:30 GMT -6
Keep an eye out for Lexicon Amps. They are rebranded Bryston 3B ST's and 4B ST's. I have the NT212 that is the 3B st... littlesicily had the NT225 which was the 4B st. Mine is plenty loud and I liked it better than the Emotiva XPA-2 and XPA-1L mono blocks. yes, great amps!
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Post by formatcyes on Aug 27, 2015 16:05:48 GMT -6
Good find thanks... I want some got bad G.A.S
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kcatthedog
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Post by kcatthedog on Aug 27, 2015 17:27:27 GMT -6
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Post by tonycamphd on Aug 27, 2015 18:25:32 GMT -6
just make sure you get generation 1 not 2, 1 is much much better according to JW, i believe him.
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kcatthedog
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Aug 27, 2015 18:36:31 GMT -6
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Post by kcatthedog on Aug 27, 2015 18:36:31 GMT -6
me too JW knows his stuff !! its a gen 1: thx all !
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Post by Johnkenn on Aug 27, 2015 18:42:14 GMT -6
See - what in the holy hades am I looking at?
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Post by plinker on Aug 28, 2015 10:34:15 GMT -6
I'm a big fan of passive speakers for monitoring. Much better value and longevity than integrated. I'm also a huge fan of class D amplification.
I power my Dynaudio BM6p with a Topping TP60. It's one of few (if not the only) Tripath implementations that can handle a 4 ohm load.
I love it. I switched to it from a Hafler P3000, and the detail is superlative. It's the only piece of China gear in my noise room (aka studio). The cost is around $200.
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Post by jimwilliams on Aug 28, 2015 14:12:03 GMT -6
I've used Hypex in commercial designs, they are about the best class D amps out there. An ideal choice for a lightweight high powered bass guitar rig. I have the newest 2k watter here now I'm working with.
For those not liking the top end, here's a good fix:
There is an onboard SOIC NE5532 opamp buffer (isolation amp) before the modulator inputs, located on the rear of the amp pcb. It's also found on the 400 and 700 watt models. I have either bypassed it feeding the modulators directly (you need to know what you are doing, there are the pins for it) or I replaced the 5532 opamp with a National LME49720MA in surface mount.
I would not use Hypex for high quality studio playback, there are better choices.
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Post by Quint on Mar 30, 2021 8:39:39 GMT -6
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kcatthedog
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Post by kcatthedog on Mar 30, 2021 8:42:40 GMT -6
Not certain, but I read a couple of articles that the circuit was redesigned?
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ericn
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Post by ericn on Mar 30, 2021 10:09:23 GMT -6
just make sure you get generation 1 not 2, 1 is much much better according to JW, i believe him. How do you tell the difference between a gen 1 and gen 2? It will say Adcom GFA xxx II on the front panel.
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Post by woofhead on Mar 30, 2021 11:26:48 GMT -6
I have a couple of gfa 2535 which is two 535's in a chassis and you can bridge them at the flip of a switch.The amp outputs a single ch bridged out plus a stereo pair when in bridged mode.I have two gfa 2535's driving tannoy 10 inch monitors, with the bridged channels going to the low drivers and one set of non bridged feeding the tweeters.Does anyone know if the 2535 is mk 2? It's not indicated on the chassis but Ive read that the 2535 may be a mk 2. Is there something to look for inside or a manufacture date to look up? I speculate about sending them to Jim Williams at some point.Thanks for any insight Mike
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Post by jpanderson80 on Mar 30, 2021 11:31:05 GMT -6
I have had two Emotiva models: the Bas-X 300 2 channel (~200-300W) and now the XPA DR-2 2channel (~800W). The clean power of the XPA DR-2 is tremendously clear. My Tyler's don't get choked if I want to go louder... or way louder. The high end cleared up by a lot more than I thought they would. It was like peeling back a layer like in the Claritin Clear commercials. I'm a soft dome tweeter guy, and I'm extremely pleased.
I use the smaller amp for casual listening/movies in the living room.
Also, I think that it's very much a personal decision. Speaker-Amp combos matter. Ears matter. Rooms matter. Some say that cables matter. My point is that there are lots of factors.
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Post by brenta on Mar 30, 2021 13:05:09 GMT -6
I have had two Emotiva models: the Bas-X 300 2 channel (~200-300W) and now the XPA DR-2 2channel (~800W). The clean power of the XPA DR-2 is tremendously clear. My Tyler's don't get choked if I want to go louder... or way louder. The high end cleared up by a lot more than I thought they would. It was like peeling back a layer like in the Claritin Clear commercials. I'm a soft dome tweeter guy, and I'm extremely pleased. I use the smaller amp for casual listening/movies in the living room. Also, I think that it's very much a personal decision. Speaker-Amp combos matter. Ears matter. Rooms matter. Some say that cables matter. My point is that there are lots of factors. I'm also using an Emotiva with Tyler's. I've got the XPA-2 2nd Gen. The 3rd gen actually looks like step down on paper with a switch mode power supply and modular amp format, but I haven't heard it. The 2nd Gen I have delivers 300 WPC into 8 ohms, and 500 WPC into 4 ohms which is what my Tyler's are. I was actually briefly using a relatively powerful and high-end Yamaha receiver to power the Tyler's before I got the Emotiva. The Emotiva sounds more effortless and dynamic. I've got a Crown XLi 1500 laying around which is also pretty powerful that I'm going to try just for fun.
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Post by stratboy on Mar 31, 2021 6:24:21 GMT -6
I use a Yamaha M-40 to power my Tylers. It’s my second one. When I blew the first one up (operator error), I used an Adcom as a substitute while I searched for another Yamaha. I was amazed at the sound differences. Not bad, just different. I really didn’t think the amp would make that big a difference, but I was wrong. It does.
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Post by nobtwiddler on Mar 31, 2021 6:51:08 GMT -6
I've got a beautiful Perraux 6000B for sale if anyone is interested. A real beast. Wonderful Mosfet amp. Used it alongside my Dynaudio M2 monitors for a years. Don't have the M2's anymore so amp is for sale. Attachments:
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Post by Martin John Butler on Mar 31, 2021 8:43:24 GMT -6
I used a 200 W. Adcom back n the day for a decade, sounded great, never failed. I borrowed some NS 10's last year back and bought the little 50 W. Adcom. It sounded great. I sold it when my buddy needed his NS 10's back. I would have kept it and bought his NS 10's, but they had brown stains all over the white cones. Even though they sounded fine, those stains just bugged me to look at right in my face every day.
Here's what isn't so well known about Adcoms.The manufacturer purposely made them to sound exactly the same no matter what the wattage. It was said in many audio reviews and interviews, and was tested by audiophile magazines ages ago, and they came to the same conclusion. Of course. more headroom is still a good thing.
I'd go Adcom kcat.
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Post by svart on Mar 31, 2021 10:55:24 GMT -6
I'm using the Class D amps I built in the other thread to power my NS10's. Great amps for them. I still have one I could sell and a couple I could build if anyone was interested.
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Post by Guitar on Mar 31, 2021 11:05:48 GMT -6
Still very happy with my Emotiva XPA-200 here, might have been this thread that tipped me on them back in the day. Use it to drive my passive Focal as well as a few other passives in the room on a Niles switcher.
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Post by woofhead on Apr 1, 2021 10:46:10 GMT -6
I found the manual for the gfa 2535 and this excerpt indicates its the 2nd gen adcom 535 design as its a triple darlington design. ibb.co/ZTfL5zC
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Post by Deleted on Apr 1, 2021 12:10:38 GMT -6
ADCOM GFA545 or GFA 555. Make sure they are a series one. Jim can even mod them if you want. I had a 555 for quite a while, but that was some years back. It was pushing a pair of Celestion SL600. Only got rid of it because I went to surround and I didn't have room for a stack of them. It was a great amp and I remember that it had a lot of headroom and an impressive power supply. I remember it as giving me tremendous bang for the buck.
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ericn
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Post by ericn on Apr 1, 2021 17:02:03 GMT -6
ADCOM GFA545 or GFA 555. Make sure they are a series one. Jim can even mod them if you want. I had a 555 for quite a while, but that was some years back. It was pushing a pair of Celestion SL600. Only got rid of it because I went to surround and I didn't have room for a stack of them. It was a great amp and I remember that it had a lot of headroom and an impressive power supply. I remember it as giving me tremendous bang for the buck. I kind of miss the Celestion SL6 and 600, they would probably make pretty decent near fields these days.
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Post by Deleted on Apr 1, 2021 17:09:31 GMT -6
I used a 200 W. Adcom back n the day for a decade, sounded great, never failed. I borrowed some NS 10's last year back and bought the little 50 W. Adcom. It sounded great. I sold it when my buddy needed his NS 10's back. I would have kept it and bought his NS 10's, but they had brown stains all over the white cones. Even though they sounded fine, those stains just bugged me to look at right in my face every day. Here's what isn't so well known about Adcoms.The manufacturer purposely made them to sound exactly the same no matter what the wattage. It was said in many audio reviews and interviews, and was tested by audiophile magazines ages ago, and they came to the same conclusion. Of course. more headroom is still a good thing. I'd go Adcom kcat. Myth right there. The best Adcom is the 545 mk I and only if modded. The 535 and 555 mk I are less detailed but still excellent modded. Unmodded, they’re pretty bad. Not sure if NS10m will reveal the difference because NS10m have high distortion. The Adcom mosfet amps are middling. The 535/545/555 MK II modded are still better than the Mosfet ones. Adcom was a case where the more expensive and later Mosfet models were worse than the cheaper initial BJT ones modded.
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