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#420682 - 10/09/16 01:44 PM Re: Why No Love for ADA Amps ??? [Re: Tico]
Gr8_White_North Offline
connoisseur

Registered: 07/12/09
Posts: 2281
Loc: Whitehorse YT
I have a Pioneer Integrated amp that I bought 35 yrs ago and it has linear control, volume increase's proportionately to how much I turn the volume knob. I have an Emotiva pre/pro and it has to be turned up to near 3/4 before it starts putting out substantial volume which feels disproportionate. I often see complaints in other forums from people saying they have to turn up the volume quite high and are concerned something is wrong with their receiver. I am with matt on this one, give me linear any day.
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#420694 - 10/10/16 06:31 PM Re: Why No Love for ADA Amps ??? [Re: Tico]
bridgman Offline
axiomite

Registered: 08/25/04
Posts: 6208
Loc: Bowmanville, Ontario, Canada
I'm wondering if we might have the terms reversed here. My recollection was that we always used logarithmic ("audio taper") pots for audio, and I *think* (unless I had too much turkey) the undesirable behaviour you guys are describing is what one gets with a linear taper pot.

EDIT - or maybe I have that backwards. Apparently too late to delete the post, maybe too late to edit as well. Nope, I can edit even if I can't delete. Interesting.


Edited by bridgman (10/10/16 06:34 PM)
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#420695 - 10/10/16 06:40 PM Re: Why No Love for ADA Amps ??? [Re: Tico]
2x6spds Offline
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Registered: 03/16/02
Posts: 3186
Loc: CA, USA
I have a Honda S2000. If you replace the stock head unit, the dash volume control becomes linear. Our hearing is logarithmic. Linear volume control results in an unpleasant and apparently non-linear increase in volume corresponding to change in the volume control. In order to fix the problem, you have to put a resistor in the volume control.
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#420696 - 10/10/16 10:18 PM Re: Why No Love for ADA Amps ??? [Re: Tico]
Gr8_White_North Offline
connoisseur

Registered: 07/12/09
Posts: 2281
Loc: Whitehorse YT
I may have been hasty in stating that my old integrated amp was linear. It may well be a linear with a resistor but it functions much different than my new gear. It feels and sounds more linear in its function. Strangely my car stereo seems the same way as my old integrated. Some of the difference may be my old stuff is mechanical whereas this new stuff is all done electronically I presume in software. To me my Denon and Yamaha and Emotiva all seem to need to be turned way up before they really put out whereas my integrated with mechanical seems to reach full power sooner . For me it is all about perception and the end result is the same.

I see what 2.6 is saying. since we hear logarithmic and the control is logarithmic we perceive it to be linear.
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DOG is GOD spelled backwards.
What others think of me is none of my business.
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#420697 - 10/10/16 11:03 PM Re: Why No Love for ADA Amps ??? [Re: Tico]
2x6spds Offline
connoisseur

Registered: 03/16/02
Posts: 3186
Loc: CA, USA
yup
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#420698 - 10/11/16 12:07 AM Re: Why No Love for ADA Amps ??? [Re: Tico]
Gr8_White_North Offline
connoisseur

Registered: 07/12/09
Posts: 2281
Loc: Whitehorse YT
Still the perception of power is not linear to me.
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DOG is GOD spelled backwards.
What others think of me is none of my business.
M80 V3 MY GLOSS Cherry

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#420699 - 10/11/16 12:25 AM Re: Why No Love for ADA Amps ??? [Re: Tico]
brendo Offline
devotee

Registered: 10/14/14
Posts: 478
Loc: West coast Canada
I think the difference is now we use a DB scale.
which is quite confusing to our older habits a library is say 40 Db and a normal voice talking say 60 db.
Now our receivers and such are using these same measurements. So turning it up to say 50 is now normal. While on the older gear 1 to 10 scale 4 and 5 was already half the dial.

Though does that mean our equipment has a 100 Db max in return.?

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#420701 - 10/11/16 07:58 AM Re: Why No Love for ADA Amps ??? [Re: Tico]
MatManhasgone Offline
connoisseur

Registered: 05/06/14
Posts: 1053
Loc: Lost in the great wide yonder
Every modern receiver / pre-amp that I have owned uses the -db scale. So with the dial starting at mute, that is -89db. But plaing any source, it seems that I don't start to hear anything until i get to the -40db before the sound becomes noticeable. On an old analog classic receiver, you would hear sound at 1.

This is where the idea of logarithmic comes in as it's not referring to the actual amount of sound coming out the speakers, but the ratio of the amount of turns on the volume knob to the amount of sound. At lower volumes, you seem to need to turn an awful lot to get any sound and that amount of turns seems to decrease in a non linear (logarithmic) fashion as you turn the volume up.
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#420808 - 10/22/16 12:14 PM Re: Why No Love for ADA Amps ??? [Re: Tico]
Tico Offline
buff

Registered: 06/15/10
Posts: 43
Loc: Orlando, Florida
Just wanted to give an update on my EP800 subwoofer delivery. You can see in the pic that it arrived without a box. Turns out the box got wet and from their handling was destroyed. Some minor damage to the exterior of the subwoofer but was working fine. It was delivered on Friday and on Monday Axiom already had a replacement EP800 on its way.

Just a reminder - this was all a FedEx problem. Axiom, as always, has been great and taken care of me. Yesterday I received my ADA1250-3 and it arrived without incident.

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