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Forum: Receivers, Amps, and Processors   11-22-2014, 04:26 PM
Replies: 29
Views: 250
Posted By MichaelJHuman
Yep. You absolutely can run out of power. ...

Yep.

You absolutely can run out of power. But note that anything less than doubling power seems unlikely to do a lot of good. Maybe an amp that performs better into lower impedances could make a...
Forum: Receivers, Amps, and Processors   11-22-2014, 04:23 PM
Replies: 29
Views: 250
Posted By MichaelJHuman
I still have not seen any explanation of how an...

I still have not seen any explanation of how an amp can be working and the bass can be lacking. I have yet to hear this phenomenon, except on the cheapest ancient Japanese mass market receivers. On...
Forum: Receivers, Amps, and Processors   11-22-2014, 03:04 PM
Replies: 29
Views: 250
Posted By MichaelJHuman
There is zero reason to think more power help if...

There is zero reason to think more power help if you are not running out of power now.

Note that your meter would be averaging power to some extent, it's response can't be instantenous. Peak...
Forum: Receivers, Amps, and Processors   11-22-2014, 12:02 PM
Replies: 2
Views: 71
Posted By MichaelJHuman
Never had this problem with ANY receiver...

Never had this problem with ANY receiver including Yamaha's cheapest model. Define 'crank it pretty high'?

Depending on the source you might have to turn volume up. Depending on calibration and...
Forum: Receivers, Amps, and Processors   11-17-2014, 05:54 PM
Replies: 9
Views: 183
Posted By MichaelJHuman
I test an RX-v375 some time ago, and felt it...

I test an RX-v375 some time ago, and felt it could easily handle movies I tested it with. If there was distortion, it was not obvious. And that is Yamaha's lowest end receiver

If you push it...
Forum: Receivers, Amps, and Processors   11-16-2014, 11:01 PM
Replies: 15
Views: 344
Posted By MichaelJHuman
You can get by without the latest tech. I was...

You can get by without the latest tech. I was happily using an RX-Z7 until 6 months ago. I upgraded with 4k in mind, Pandora capability and the latest Audyssey. A lot of the stuff is gimicky (3D)...
Forum: Receivers, Amps, and Processors   11-13-2014, 12:05 PM
Replies: 4
Views: 162
Posted By MichaelJHuman
I use an XPA-3, works fine

I use an XPA-3, works fine
Forum: Subwoofers, Bass, and Transducers   11-06-2014, 09:34 PM
Replies: 13
Views: 658
Posted By MichaelJHuman
I run a Denon X4000, an Emo XPA-3, a Crown...

I run a Denon X4000, an Emo XPA-3, a Crown XLS-1000 a TV and misc. other stuff off one 15A circuit. Never tripped the breaker

As long as the amps have some soft start up where they don't all try...
Forum: Receivers, Amps, and Processors   11-05-2014, 12:28 PM
Replies: 66
Views: 1,339
Posted By MichaelJHuman
It is often recommended to have more power output...

It is often recommended to have more power output than your speaker's continuous power rating, but it's hardly mandatory

For movies, you are unlikely to damage speakers due to the highly dynamic...
Forum: Subwoofers, Bass, and Transducers   11-05-2014, 12:43 AM
Replies: 41
Views: 1,156
Posted By MichaelJHuman
Ok, so it's mainly about the cab. Which makes...

Ok, so it's mainly about the cab. Which makes some sense. I studied physics, but never fully grokked acoustics. It's interesting stuff though
Forum: Subwoofers, Bass, and Transducers   11-05-2014, 12:40 AM
Replies: 13
Views: 658
Posted By MichaelJHuman
Class D all the way. Even if there was...

Class D all the way. Even if there was distortion, you are not going to hear it on bass IMO. And there's probably inaudible distortion. You want a $500 sub (or less) with a 300 watt amp, I don't...
Forum: Subwoofers, Bass, and Transducers   11-04-2014, 04:27 PM
Replies: 41
Views: 1,156
Posted By MichaelJHuman
Help out a speaker dummy... I understand SPL...

Help out a speaker dummy...

I understand SPL is a matter of how much displacement

But I am less clear on what limits LF limit. I know there's complexties with porting and such. But is there a...
Forum: Receivers, Amps, and Processors   11-03-2014, 11:06 PM
Replies: 66
Views: 1,339
Posted By MichaelJHuman
Makes no sense. If I applied just some basic...

Makes no sense. If I applied just some basic logic here...

Peak power draw for the amp is the based on the peak signal level, and the lowest impedance even "seen" while playing back the signal. ...
Forum: Receivers, Amps, and Processors   11-02-2014, 11:31 PM
Replies: 66
Views: 1,339
Posted By MichaelJHuman
If the wattage is 100% accurate, SPL differences...

If the wattage is 100% accurate, SPL differences between 125 and 200 is less than 3 dB, which is slight

As that is the 8 ohm spec, it's handy to look at the 4 ohm spec as well.

XPA-5 - 300...
Forum: Receivers, Amps, and Processors   11-02-2014, 03:12 PM
Replies: 66
Views: 1,339
Posted By MichaelJHuman
Klipsch is super efficient ( high sensitivity...

Klipsch is super efficient ( high sensitivity spec.)

Seems you could go with the affordable XPA-5

Or look at the Outlaw 7125, in case you need 7 channels in the future (125 watts vs 200 is not...
Forum: Receivers, Amps, and Processors   11-02-2014, 01:08 AM
Replies: 13
Views: 356
Posted By MichaelJHuman
I tried a Yamaha RX-375, and at peaks around 90...

I tried a Yamaha RX-375, and at peaks around 90 dB, it sounded pretty clean to me. I can understand though, the large difference in peak vs. average power. The nice thing is that you may often need...
Forum: Receivers, Amps, and Processors   11-01-2014, 10:49 PM
Replies: 101
Views: 30,188
Posted By MichaelJHuman
My SPL meter clearly can average slow or fast,...

My SPL meter clearly can average slow or fast, which is just the sampling interval I guess for the average. But why can't there be a peak SPL?
Forum: Receivers, Amps, and Processors   11-01-2014, 03:13 PM
Replies: 13
Views: 356
Posted By MichaelJHuman
Just remember, it's the peaks which require the...

Just remember, it's the peaks which require the power. Peak demand could be more than ten times average demand ( I could make a case for as much as 100 times the power.) How often you actually hit...
Forum: Receivers, Amps, and Processors   11-01-2014, 03:10 PM
Replies: 13
Views: 356
Posted By MichaelJHuman
I once did some measurements, and was seeing...

I once did some measurements, and was seeing roughly the same SPL at every position. Technically the subwoofer channel needs the most power, as LFE has a higher peak SPL than your other 5 channels....
Forum: Receivers, Amps, and Processors   10-31-2014, 01:36 PM
Replies: 48
Views: 1,915
Posted By MichaelJHuman
I bought the Denon for it's level of Audyssey. I...

I bought the Denon for it's level of Audyssey. I previously had a Yamaha

I am mostly happy with the Denon interface. The dynamic volume, or whatever it's called means I rarely reach for remote,...
Forum: Receivers, Amps, and Processors   10-31-2014, 01:31 PM
Replies: 2
Views: 131
Posted By MichaelJHuman
If it follows the speaker, it's the speaker. Did...

If it follows the speaker, it's the speaker. Did you swap speakers from left to right? First thing to check
Forum: Speakers   10-30-2014, 10:16 PM
Replies: 92
Views: 1,596
Posted By MichaelJHuman
If underpowering speakers caused it to blow, it...

If underpowering speakers caused it to blow, it would blow under conditions such as not being hooked up :) The advantage to sufficient power is to reduce chances of clipping, which can cause...
Forum: Receivers, Amps, and Processors   10-29-2014, 11:52 AM
Replies: 28
Views: 1,205
Posted By MichaelJHuman
SO TRUE, lol Sometimes they make them...

SO TRUE, lol

Sometimes they make them better. I bet dollars to your donuts modern analog synthesizers are better than the ones from the 70s. They know a lot more on how to make them not drift...
Forum: Receivers, Amps, and Processors   10-29-2014, 01:26 AM
Replies: 2
Views: 161
Posted By MichaelJHuman
I don't understand the comment that magnetic...

I don't understand the comment that magnetic metals would cause distortion. There's always some electro magnetic fields in electronics and lots of magnetic metals and I have not heard of any issues...
Forum: Receivers, Amps, and Processors   10-29-2014, 01:22 AM
Replies: 2
Views: 161
Posted By MichaelJHuman
Very nice, and I would love one, but can't afford...

Very nice, and I would love one, but can't afford this one for sure. Seen this show a few times, and always enjoy it.

I can't recall specifics, but I think the anniversary edition shown here is...
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