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  Topic Review (Newest First)
07-17-14 01:21 AM
zieglj01
Re: Speakers not loud enough

Quote:
gazoink wrote: View Post
Perhaps, but even if they're 3dB off, he'll still play plenty loud enough.

Yeah, pretty basic. Although, that doesn't necessarily mean "bad", some of the more basic speakers were/are spectacular. I don't think the crossover design would hamper sensitivity, but the caps might age-out and mess with crossover frequencies at very least.
They can play loud and get loud for a lot of people - however, loud and
clean is another thing.

I know the caps really do not effect the sensitivity - it is more about the
voice coil and magnets.

The RadioShack speakers can be decent >> however I never owned, or
heard a spectacular one yet.

However, the OP has something to keep him going for a while - as long as
he is not a head-banger!
07-16-14 11:49 PM
harihalst2014 Yes, those are my speakers, (the STS-100's and Pro 77's.
07-16-14 11:46 PM
gazoink
Re: Speakers not loud enough

Quote:
zieglj01 wrote: View Post
I have owned 2 of them speakers > the STS-100 and Pro-77 > It would be
a small miracle, if they in fact measured according to their sensitivity specs.
Perhaps, but even if they're 3dB off, he'll still play plenty loud enough.
Quote:
zieglj01 wrote: View Post
The STS-100 only has a high pass filter (1 cap ea) for the midrange and the tweeter.

If I remember correctly, the Pro-77 woofer also runs free - and only a small coil and
cap for the tweeter.
Yeah, pretty basic. Although, that doesn't necessarily mean "bad", some of the more basic speakers were/are spectacular. I don't think the crossover design would hamper sensitivity, but the caps might age-out and mess with crossover frequencies at very least.
Quote:
zieglj01 wrote: View Post
They do best at moderate levels - and a subwoofer for sure will help them out.
At least that's better than doing their best when disconnected!

Subs help everything out...except your marriage.
07-16-14 10:12 PM
zieglj01
Re: Speakers not loud enough

Quote:
gazoink wrote: View Post
OP, are those your speakers?

I looked at the manual, though in Spanish, they are in fact spec'ed at 90dB/1w/1m.
I have owned 2 of them speakers > the STS-100 and Pro-77 > It would be
a small miracle, if they in fact measured according to their sensitivity specs.

The STS-100 only has a high pass filter (1 cap ea) for the midrange and the tweeter.

If I remember correctly, the Pro-77 woofer also runs free - and only a small coil and
cap for the tweeter.

They do best at moderate levels - and a subwoofer for sure will help them out.
07-16-14 09:58 PM
gazoink
Re: Speakers not loud enough

Quote:
zieglj01 wrote: View Post
Here are the speakers - I have been through the Optimus/RadioShack parade.
http://www.hometheatershack.com/foru...tml#post831386

The Optimus receiver may, or may not be by Technics/Panasonic

OP, are those your speakers?

I looked at the manual, though in Spanish, they are in fact spec'ed at 90dB/1w/1m.
07-16-14 08:25 PM
zieglj01
Re: Speakers not loud enough

Quote:
gazoink wrote: View Post
The OP said he had an old Optimus receiver, but hasn't mentioned the brand or model of the speakers. (OP? We're dying to know!)

And all warnings as to over-powering speakers are reasonable, and worth heeding.
Here are the speakers - I have been through the Optimus/RadioShack parade.
http://www.hometheatershack.com/foru...tml#post831386

The Optimus receiver may, or may not be by Technics/Panasonic
07-16-14 05:52 PM
gazoink
Re: Speakers not loud enough

Quote:
tonyvdb wrote: View Post
How large is your room your using this system in?
Good question, but room size, while interesting, isn't really the key. More important would be how far away from the speakers is the listening position? And, if we could verify the speaker make/model, and then the actual efficiency, it's quite easy to predict if there's a power handling issue or not.

Remember, in most cases, average power at 20W is pretty loud. Just considering one speaker and a single channel, if system max is 80W, and reference levels are -20dB below system max, then reference level would play at under a watt. Loud averages would be under 20W. Only peaks would ever come close to full output. If the speaker is 91dB/w/m, and he sits two meters away (6.5 feet), his reference levels would still be at a very loud 84dB SPL. With both speakers running, the peak SPL would be over 107dB SPL. And for normal listening, nothing would burn up, out, or down.
07-16-14 05:39 PM
gazoink
Re: Speakers not loud enough

Quote:
zieglj01 wrote: View Post

However, there is only so much that your speakers can take - 100 watts is
short term peak power. There is also limited crossover protection on those
Optimus speakers. Most only have a high pass filter on the tweeter. The
woofers are really budget-friendly quality, and can easily burp.

However the speakers you have can hold you, till you upgrade.
The OP said he had an old Optimus receiver, but hasn't mentioned the brand or model of the speakers. (OP? We're dying to know!)

And all warnings as to over-powering speakers are reasonable, and worth heeding.
07-16-14 03:28 PM
tonyvdb
Re: Speakers not loud enough

In the old days (20 years ago) the volume at about 50% was max and at distortion levels, today the volumes are not set up in the same way. If you have run the auto room correction at its maximum level so in your case 80 would be pushing the receiver to output above reference levels (I also agree Tascam messed up the display readings as it makes no sense) How large is your room your using this system in?
07-16-14 02:17 PM
mvision7m
Quote:
gazoink wrote: View Post
I've read the manual and completely understand your confusion. The volume control is scaled in 0-80, and is scaled in dB. The manual talks about "film reference" level, which after Audyssey calibration, occurs at a volume control setting of "0". Except it doesn't. Because, I'm betting, when your volume control displays "0", that's the minimum, not "film reference" at all. Your maximum is 80. Basically, Tascam blew it. The volume control reading makes little sense on the surface, and they don't explain it in the manual at all. However, I'll bet that "film reference" happens when the control is set for 75. In fact, if you played a reference noise test signal (from THX Optimizer or similar) and measured your sound level with an sound level meter, you'd probably read 75dB SPL with the volume control set for 75. This means that your normal listening level will probably be between 65 to 70 on the volume control. This is completely normal operation, as most people find "film reference" volume too loud at home. But when you want to hear what the sound mixers heard during the creation of a film soundtrack, wang that baby up to 75. You won't hear much at 35 or 40, which is also normal. Shame on Tascam for doing such a shoddy job of explaining this, and making a serious error in their manual.
Great job with that assist. Explained it perfectly.
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