Gathering of Tweakers

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deepspace schreef op maandag 31 oktober 2005 @ 17:17:
Mooi Maar is dit nu zelfbouw of niet?

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deepspace schreef op maandag 31 oktober 2005 @ 17:24:
Een sub kan ik me voorstellen. Dat gesloten laag zal zeker wel prachtig zijn, maar erg diep zul je niet komen in verhouding.

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lowfi schreef op zaterdag 29 oktober 2005 @ 22:12:
wooooeeei mijn nieuwe eindversterker en processor zijn besteld

binnenkort echte pics

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rotel 1068 processor (Dolby Digital, Dolby EX, Dolby Pro-Logic II, DTS, DTS ES, DTS ES Discrete, DTS Neo 6, HDCD) al die zooi dus

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rotel 1077 icepower digitale eindversterker.. 7 x 100 watt

nu nog wachten tot het binnen is

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I remember years ago one of the manufacturers billed their amp as a straight wire with gain. That would be the ultimate amp, as it would add hardly anything in terms of distortion and noise and would loose very little as well. When I opened the box for the RMB 1077 and took out the diminutive device inside that ancient sound bite came to mind.

We are taking a giant leap towards the ultimate amp: A straight wire with gain. I?ve spent the past 5 days burning her in and playing all types of source material, and offer the following observations. I?ll also include some comparison to the three other Rotel amps I own, an RB 1080, a RB 1050 and an RMB 1075, and some other high end amps I?ve auditioned on my equipment, a Halo A21 and Krell Showcase.

The 1077 is definitely a Rotel in sound signature, clean, clear and musical. However, it has much more of the mid and low end weight and forwardness of the Krell Showcase or a Halo. The mid and low bass are much stronger than what I am used to experiencing with my 1080 making the 1077 sound like a much more powerful amp. The Halo A21 that I tested, with it?s 250 wpc has similar weight in the low end. The top end is very extended without being bright. The 1077 is less ?rounded? than most Rotel amps, it is also much more transparent then the Halo, who?s top end is so rounded that it seems to be designed specifically for brighter speakers that have hot tops, or for people who?s high frequency hearing is already shot from too many years of high SPL listening.

When I first turned it on the 1077 was a bit harsh at the top. Sibilant sounds grated like sandpaper. Over time she has smoothed out considerably. This initial harshness is a characteristic I find of all Rotel amps. After break in the overall sound signature of the 1077 is as close to perfect as I can imagine for use with MY speakers. The Krell Signature 5 channel amp I ?borrowed? last year left a similar impression.

I wouldn?t have expected an amp with a FTC rating of only 100 wpc to be so powerful. I think this new breed of amps will have to come along with a new way of defining amplifier power. AMD had to do this a few years back when it?s processors performed on the level of much higher clock speed Intel processors. AMD started to rate their processors at Intel equivalent clock speed, rather than true clock speed. On day 3 I cranked up the 1077 for a rendition of the "Stars and Stripes" played by the Boston Pops to a level that could be heard by just about the entire neighborhood. I didn't experience any "compression" of the sound as I would expect from an amp sporting only 100wpc (and have experienced with my 1075 while driving the mains). I?ve played some heavy material since at ?insane? SPL and the 1077 has handled it all without the slightest hint of clipping or other signs of distress. My speakers, Klipsch RF 7s, are super efficient at 102 dbw, but that is balanced off by the fact that I have an enormous room to fill. It?s over 7000 cu ft.

Although they are very efficient, the RF7s are a somewhat difficult load since they have an impedance dip to 2.8 ohms at low frequencies. This will quickly show the deficiencies of any amp, and multi-channel receiver?s with their puny excuses for onboard amplifiers simply do a terrible job with the 7s. The 1077s ability to "track" the impedance curve of a speaker allows it to transfer max power even at surprisingly low impedances. Only "bigger" amps (200 wpc and up) have achieved this sound with my RF7s. The 1077 does appear to sound like a "bigger" amp than my 200 wpc 1080 does, and at least as big as the 250 wpc A21.

Soundstage: My initial apparent dissapointment with the amp centered around it?s seemingly narrow and shallow soundstage. On day 2 I realized that this dummy, in his rush to get the amp up and running had reversed the left and right channels. No wonder everything sounded so weird. I can now report the following. The soundstage of the 1077 in 2 channel mode is at least as wide as the 1080, however, it does lack some of that amps depth. Most of the 1077s soundstage is forward of the speakers so it tends to project instruments out into the room. The musicians seem to be out in the room with you rather than being in front of you on a stage. I was able to moderate this a bit by adjusting the separation width and tow-in of my speakers. It seems that the tonal balance differences from the 1080 create new and different room reactions. I am growing fond of this effect for 2 channel, however, in theater mode the amp projects the center channel out into the room and it no longer anchors dialog to the screen as well as the 1075 does. The overall sound is very reminiscent of the 1075 in combination with the RSP 1066 I used to own.

The amp is exceedingly linear. It performs as well at low volumes as it does at high SPL. This has been a characteristic of Rotel amps for as long as I?ve owned them, and it?s a characteristic I enjoy. When I auditioned the Halo A21 for three weeks one of the things that distressed me the most about that amp was the fact that it performed well at high SPL and had a good, if not great top end and a huge soundstage. But it fell apart completely when turned down. The Krell Showcase held up well under similar conditions. It never lost it.

I?ve decided that the 1077 is a keeper!

lowfi wijzigde dit bericht 31-10-2005 23:52 (94%)

atmoz wijzigde dit bericht 01-11-2005 15:31 (9%)

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Daklem schreef op dinsdag 01 november 2005 @ 18:51:
hehe

als student zijnde kun je een aardige set opbouwen...

daar ben ik momenteel ook mee bezig en het gaat perfect. het einde is bijna in zicht van een lange tijd upgraden. Ik ben bijna tevreden

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kippekop schreef op dinsdag 01 november 2005 @ 19:05:
[...]


...en dan val je in een diep gat Er is altij wel weer wat, nieuwe techniek die om de hoek komt kijken, mooi nieuw meubeltje voor de spullen, mooi stekkerblokje, beamertje...

Mooie studentenkamer trouwens, veel te netjes man Sfeerverlichting voor als er vrouwelijk gezelschap komt is een pré natuurlijk!

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Daklem schreef op dinsdag 01 november 2005 @ 18:51:
hehe

als student zijnde kun je een aardige set opbouwen...

daar ben ik momenteel ook mee bezig en het gaat perfect. het einde is bijna in zicht van een lange tijd upgraden. Ik ben bijna tevreden

Sproedie wijzigde dit bericht 01-11-2005 20:21 (4%)

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Sproedie schreef op dinsdag 01 november 2005 @ 20:21:
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Daklem mooie set heb je staan . De Lcd is ook erg netjes.

Greetz Sproedie a.k.a. Slotje (dan gaat er vast wel een lichtje branden)

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MikeyMan schreef op woensdag 02 november 2005 @ 13:17:
Ik zou hem op de bank zetten... Als je hem ervoor zet, wordt het geluid anders geblokkerd dan als jij daar zou zitten luisteren...

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yash schreef op woensdag 02 november 2005 @ 13:30:
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En spikes er gewoon onder laten want dat heeft ie op de luister plek ook

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MikeyMan schreef op woensdag 02 november 2005 @ 13:49:
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Juistem... Goed voor je bank... Naja, glijdt ie er iig niet af

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MikeyMan schreef op woensdag 02 november 2005 @ 13:49:
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Juistem... Goed voor je bank... Naja, glijdt ie er iig niet af

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JT schreef op woensdag 02 november 2005 @ 19:56:
Hier nog iemand in Enschede die mijn HT wilt zien en toevallig ook een digicam heeft ?

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MikeyMan schreef op woensdag 02 november 2005 @ 13:49:
[...]


Juistem... Goed voor je bank... Naja, glijdt ie er iig niet af

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kingfriko schreef op zaterdag 29 oktober 2005 @ 17:05:
Heb zelf een receiver en speakers bij abetterprice gekocht , geen klachten over ze