Uh yeah, I’m pretty sure it was Mike....
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Uh yeah, I’m pretty sure it was Mike....
-curtis
I don't remember that lol.
The speaker impedance specification doesn't matter in these calculations since our sensitivity specification is properly based on voltage, not power. This is the correct way to list sensitivity because impedance varies considerably with frequency. To properly determine what sensitivity to use in this calculator, someone would have to estimate the average impedance value within the typical sensitivity frequency range (typically from 300Hz to 3kHz)
At that time, it was the latest Linkin Park release, you (or it was someone else) was impressed with how deep the bass went. It was very problematic for the Song Tower, but it also badly "popped" the woofers in our tower as well. I didn't own that Linkin Park CD so someone brought it here -- don't think it was Mitch but maybe.
Thank you Dave.
Yes that makes sense. To be honest I have never measured spl at MLP at that volume. I do have REW and a UMIK mic tho, so when I rearrange and recalibrate my subs I'll try raising the volume in increments and see where levels are in relation to the number setting on my dial using REW's built in tone generator and spl meter.
I agree with you that 97 dB is dangerous and I want to know if that's where I'm at. I'll be shocked if I'm at, or over 100 dB at my seat with music. I've been assuming 85 -90 dB at the "0" setting on my dial, which is what I've been referring to as reference. Sounds like I might be surprised... I'm not trying, nor do I want to hit 105 dB. I never watch movies over -10 or -15 at the most. Above that is just too loud to the point unpleasant.
I like to turn up music sometimes tho. I played drums for years and one of the examples I posted above is a drum solo. That recording sounds so good and he's such a talented drummer I just can't help myself. I turn it up almost every time it plays and it almost sounds like his kit is in my room. When I close my eyes it feels like I'm transported there. I'm used to practicing on the drums so, well, a 2 or 3 minute solo played at max volume every once in a while is right up my alley.
I have definitely not heard those drivers bottom out and appreciate you confirming that they appear to be operating within limits, provided my amp isn't clipping. I can't say I've heard any bad behavior at all, and I've tried to listen for it. FWIW my amp really seems to love the Sierras. It has not gotten more than lukewarm since I've had them hooked up, no matter what I've thrown at it. I know that doesn't mean there isn't any clipping at high volumes, but it is something I noticed that I appreciate.
You are very welcome and I am thrilled you are enjoying the towers. Curtis turned me on to an incredible Sheffield Labs drum solo CD that I often use for demos. It is one of my favorites and I like it loud.
I'd recommend it. Those ribbon towers are so clean that we often don't realize we are listening at very loud volume levels.To be honest I have never measured spl at MLP at that volume.
This is the wrong assumption to make and I'll explain why. Ever notice that one CD will sound so much louder than another? There are literally no standards with regards to 2-channel mastering levels. That "0" volume level setting assumes a specific input voltage and that is fixed for the Dolby Digital spec. Pre-amps and Amp's just take the source signal and amplify it - they are not self monitoring devices, they don't measure output voltages to maintain 85dB at any input voltage level.I've been assuming 85 -90 dB at the "0" setting on my dial, which is what I've been referring to as reference.
If you have a CD that is recorded hot, and unfortunately - so many of them are these days, - if that CD is +6dB (many are even higher so they sound louder) - than that "0" setting is actually 6dB higher. For example, if the 0 db setting calibrates to 85dB at your listening position for Dolby Digital, that hot CD could very well measure an average of 91dB.
Since you are really into this, I strongly recommend picking up a decent SPL meter from Amazon. It is a very useful tool and they don't cost much.