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Discussion Starter · #1 ·
Hi all,


I recently purchased a new receiver with a set of speakers (Onkyo TX-SR507 with Tannoy HTS-200 speakers).


Everything is set-up properly, and it sounds mighty fine.


However, I have 2 unanswered questions.


1. My volume only indicates from 0-79, instead of a negative scale going from 0 dB down. I would like to know, maybe there are some other Onkyo owners out there, at what level am I at or close to reference level for movies?


2. How loud can I push the volume without putting my speakers/amp at risk? I already listen to it at reasonably loud levels, but sometimes, I would like to "push it to the pegs".


The specs for my amp are the following:

Rated Output Power:


80 watts minimum continuous power

per channel, 8 ohm loads, 2 channels

driven from 20Hz to 20kHz, with a

maximum total harmonic distortion of

0.08% (FTC)


90 watts minimum continuous power

per channel, 8 ohm loads, 2 channels

driven at 1kHz, with a maximum total

harmonic distortion of 0.7% (FTC)


100 watts minimum continuous power

per channel, 6 ohm loads, 2 channels

driven at 1kHz, with a maximum total

harmonic distortion of 0.1% (FTC)

Maximum Output Power


5 ch × 160 W at 6 ohms, 1kHz, 1 ch

driven (JEITA)

Dynamic Power

180 W (3Ω, Front)

160 W (4Ω, Front)

100 W (8Ω, Front)



My speakers specs:

Center and satellite:

Recommended amplifier power 25 - 100 Watts

Maximum Sensitivity (2.83Volts @ 1m) 87dB

Normal impedance Centre 8 ohm Satellite 6 ohm

TOWER SPEAKER


Recommended amplifier power 25 - 100 Watts

Maximum Sensitivity (2.83Volts @ 1m) 88dB

Nominal impedance 6 ohm



I get mixed up with the Rated Output Power, Maximum Output Power, Dynamic Power. Can anybody help me making sense out of this?


Many thanks
 

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Don't worry about over heating your receiver, you will blow your speakers before you cause your amp to go into protection mode. Do you hear any distortion as you begin to push your speakers? Tweeters usually will be the first to go - so be cautious.


Sound is a crazy thing, because it depends on the type of noise/sound/frequency being delivered. You can test a speaker at one watt and it is pretty loud...especially if it is a single frequency - if you test with pink noise the frequency is spread out there for it spreads the wattage. So any comment is going to be a vague generalization as I presented above.
 

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Quote:
Originally Posted by Dankrakafoon /forum/post/18243673


1. My volume only indicates from 0-79, instead of a negative scale going from 0 dB down. I would like to know, maybe there are some other Onkyo owners out there, at what level am I at or close to reference level for movies?

The one at which you measure 75dB SPL at your seating position using -30dBFS pink noise or 85dB SPL using -20dBFS pink noise.

Quote:
2. How loud can I push the volume without putting my speakers/amp at risk? I already listen to it at reasonably loud levels, but sometimes, I would like to "push it to the pegs".

Not past where you have audible distortion, since that may come from the speakers nearing their mechanical limits (past which damage can occur) or the amplifier clipping (which means that the spectrum is no longer musical and favoring low frequencies).
 

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Discussion Starter · #4 ·
Thanks for your answers.


I must say, up to now, I tested it at pretty high levels (to my taste and in my environment anyway), and there is no trace of distortion.


Can I tentatively push up the volume until I hear slight distortion, then bring it down right away and there should be no lasting harm to the speakers? I would do this just out of curiosity, so if my speakers can be damaged that way, I would abandon this idea.
 
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