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#4229 - 06/19/03 12:39 PM Dolby Reference Levels
eurorom Offline
Gunslinger

Registered: 03/04/02
Posts: 96
Loc: El Paso Texas
I am the proud owner of the 1050,to all the people out there that do not think this reciever has plenty of power, well let me just mention these things; my room dimensions are as follows: 10ft wide by 24ft long with 10ft ceilings, at Dolby Reference Levels seatting at 11ft from my main speakers with out the subwoofer I am hitting the 105db's at peak levels with out any sign of distortion. Now I add the sub with 600 watts of raw continious power and I hit 115db's plus on peaks.My mains sensitivity is 93db,center 95db,and surrounds 91db,crossover set at 80htz all speakers set small.WOW! is this what real 65watts sound like???? So is this reciever the best BANG for the Buck? you bet it is!! Outdated? Not yet!

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#4230 - 06/21/03 12:51 PM Re: Dolby Reference Levels
D'Arbignal Offline
Desperado

Registered: 02/23/03
Posts: 327
Loc: NJ, USA
Yes, 65 watts is plenty for most systems and rooms. If you were to hear a full 65 watts of sound, it would likely make your ears bleed unless either your speakers are really inefficient or your room is gargantuan.

This is why it's better to have good power as opposed to merely a lot. Low-end brands like Sony, JVC, Kenwood, and Pioneer tend to inflate their power numbers at the expense of quality to appeal to ignorant shoppers who "shop by the numbers".

Jeff

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#4231 - 06/21/03 10:46 PM Re: Dolby Reference Levels
Time_Stands_Still Offline
Gunslinger

Registered: 05/19/03
Posts: 20
Loc: British Columbia, Canada
JUST AN FYI...

EXAMPLE OF POWER vs. SPEAKER EFFICIENCY!


Speaker with a 91db with 1 watt input at 1metre speaker efficiency power requirements to produce various volume levels.

93db needs 2 watts
96db needs 4 watts
99db needs 8 watts
101db needs 16 watts
104db needs 32 watts
107db needs 64 watts
110db needs 128 watts

** These volumes in decibels are only with one speaker with a microphone at 3.3feet away or 1metre measured in a anechoic chamber ( room designed not to produce secondary sounds ). A stereo pair of speakers would effectively give you the same volume sitting 6.6 feet away, with 91db efficiency speakers, which is a typical efficiency of many speakers.

** Also remember your room will add and/or subtract certain volumes in decibels depending on frequency and acoustical design of your room.

** In most cases you will be watching a movie or listening to music at what are considred quite loud volumes using generally less than 50 watts of continuous power. So if your amp can put out adequate volume through your speakers of at least 50 watts RMS you can count on the amp being able to put out 75-100 watts cleanly for peaks as most modern amps have about 1.5 to 2-db headroom.


HTH!

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#4232 - 06/22/03 08:43 AM Re: Dolby Reference Levels
eurorom Offline
Gunslinger

Registered: 03/04/02
Posts: 96
Loc: El Paso Texas
Great information,also if I may add; I notice that when you cut out the low bass it is much easier on the amp which it would play louder!!(less wattage used)thanks for the information Time Stand Still

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#4233 - 06/22/03 05:24 PM Re: Dolby Reference Levels
D'Arbignal Offline
Desperado

Registered: 02/23/03
Posts: 327
Loc: NJ, USA
Yes, bass consumes mondo power, which is why the addition of a powered subwoofer can improve the performance of a system even if it already contains full-range speakers.

Jeff

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#4234 - 06/23/03 03:11 PM Re: Dolby Reference Levels
zacster Offline
Gunslinger

Registered: 11/15/01
Posts: 131
Loc: Brooklyn, NY
Your speakers are very efficient. In fact, you could get ear splitting levels with a flea powered 2.5wpc SET amp. Are they Klipsch?

OTOH, my speakers are 86db, and I can get them plenty loud without distortion with my 1050.

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#4235 - 06/24/03 12:29 AM Re: Dolby Reference Levels
eurorom Offline
Gunslinger

Registered: 03/04/02
Posts: 96
Loc: El Paso Texas
My speakers are the TRUE Studio Monitors JBL 4430 Bi-radial two way.Therefore, if that helps!I have not beign able to find a better sounding speaker at loud levels, without compression!!

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#4236 - 06/24/03 01:26 AM Re: Dolby Reference Levels
soundhound Offline
Desperado

Registered: 04/10/02
Posts: 1857
Loc: Gusev Crater, Mars
I have found that any speaker with a horn sounds wonderful with tube amplification. Just for grins, you should try to borrow a single ended triode (SET) amp to run your speakers. These are the most sweet sounding tube amps of all and complement the characteristics of horns. You will be able to drive your speakers with an SET amp with as little as 5 watts believe it or not!

[This message has been edited by soundhound (edited June 24, 2003).]

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#4237 - 06/25/03 12:10 AM Re: Dolby Reference Levels
eurorom Offline
Gunslinger

Registered: 03/04/02
Posts: 96
Loc: El Paso Texas
Thanks sound... but were could,should I start looking.Any comments? How about some Manley Tube amps....!

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#4238 - 06/25/03 10:10 PM Re: Dolby Reference Levels
zacster Offline
Gunslinger

Registered: 11/15/01
Posts: 131
Loc: Brooklyn, NY
Build your own! The JE Labs 300b has only 24 components total and could easily be put together by a novice, with caution about high voltages. There is a page at angela.com with schematic and some building instructions.

With 4 receivers/amps/integrateds, I haven't been able to justify building one yet myself. Besides, parts alone would cost you a good part of $1000, considerably more than my 1050 and my Dynaco ST70, combined.

As an alternative, look for a local DIY audio meeting. I went to a Bottlehead meeting and heard my speakers powered by an AudioNote 300b amp with Western Electric tubes. Verrrry Sweeet. Funny thing is, everyone preferred the sound of my speakers with my Dynaco. Look here for pics: http://www.uvm.edu/~rboles/audio/ne_bot_may-17-03.html

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