Forums

Speaker efficiency?

Started by Unknown November 2, 2018
Since I will be playing a low wattage tube amp through speakers it
seems that high efficiency speakers are in order. How can I tell the
efficiency of a speaker from looking at the specs?
Thanks,
Eric
On 2-11-2018 19:26, etpm@whidbey.com wrote:
> Since I will be playing a low wattage tube amp through speakers it > seems that high efficiency speakers are in order. How can I tell the > efficiency of a speaker from looking at the specs? > Thanks, > Eric >
If a big speaker is inside a BIG box , it will be useful. Those small BOOSE boxes are not.
On Fri, 02 Nov 2018 11:26:19 -0700, etpm wrote:

> Since I will be playing a low wattage tube amp through speakers it seems > that high efficiency speakers are in order. How can I tell the > efficiency of a speaker from looking at the specs? > Thanks, > Eric
First and foremost, you need to be comparing speakers by identical units of power. There are some very bizarre and totally misleading figures quoted by certain manufacturers to make their speakers appear more powerful than they really are. One you've got that straight, you can begin to compare power consumed vs. sound pressure generated: https://en.wikipedia.org/wiki/Sound_pressure -- This message may be freely reproduced without limit or charge only via the Usenet protocol. Reproduction in whole or part through other protocols, whether for profit or not, is conditional upon a charge of GBP10.00 per reproduction. Publication in this manner via non-Usenet protocols constitutes acceptance of this condition.
On Friday, November 2, 2018 at 2:26:21 PM UTC-4, et...@whidbey.com wrote:
> Since I will be playing a low wattage tube amp through speakers it > seems that high efficiency speakers are in order. How can I tell the > efficiency of a speaker from looking at the specs? > Thanks, > Eric
Hey Eric, Can I ask why the tube amp obsession? If you're interested in how they work, then you could fix up some old one or build your own. George H.
On Sat, 03 Nov 2018 18:05:59 -0700, George Herold wrote:

> On Friday, November 2, 2018 at 2:26:21 PM UTC-4, et...@whidbey.com > wrote: >> Since I will be playing a low wattage tube amp through speakers it >> seems that high efficiency speakers are in order. How can I tell the >> efficiency of a speaker from looking at the specs? >> Thanks, >> Eric > > Hey Eric, Can I ask why the tube amp obsession? If you're interested in > how they work, then you could fix up some old one or build your own.
A surprising number of people find the subtle 2nd harmonic distortion of a valve amp to be very agreeable. -- This message may be freely reproduced without limit or charge only via the Usenet protocol. Reproduction in whole or part through other protocols, whether for profit or not, is conditional upon a charge of GBP10.00 per reproduction. Publication in this manner via non-Usenet protocols constitutes acceptance of this condition.
On Fri, 2 Nov 2018 19:47:18 -0000 (UTC), Cursitor Doom
<curd@notformail.com> wrote:

>On Fri, 02 Nov 2018 11:26:19 -0700, etpm wrote: > >> Since I will be playing a low wattage tube amp through speakers it seems >> that high efficiency speakers are in order. How can I tell the >> efficiency of a speaker from looking at the specs? >> Thanks, >> Eric > >First and foremost, you need to be comparing speakers by identical units >of power. There are some very bizarre and totally misleading figures >quoted by certain manufacturers to make their speakers appear more >powerful than they really are. One you've got that straight, you can >begin to compare power consumed vs. sound pressure generated: > >https://en.wikipedia.org/wiki/Sound_pressure
It looks like all the speaker specs I have seen don't have enough info to tell how efficient they are. None say how much sound pressure they produce per watt consumed. I just wanna buy online. I live on an island and loathe going over to the mainland to shop. Traffic and crowds make me uncomfortable. Eric
On Sat, 3 Nov 2018 18:05:59 -0700 (PDT), George Herold
<gherold@teachspin.com> wrote:

>On Friday, November 2, 2018 at 2:26:21 PM UTC-4, et...@whidbey.com wrote: >> Since I will be playing a low wattage tube amp through speakers it >> seems that high efficiency speakers are in order. How can I tell the >> efficiency of a speaker from looking at the specs? >> Thanks, >> Eric > >Hey Eric, Can I ask why the tube amp obsession? If you're interested >in how they work, then you could fix up some old one or build your own. > >George H. >
It's not an obsession. It's just that I need a new stereo because the old one crapped out. The stereo will be in the area where we entertain and so it should look pleasing. To me at least. I have always exposed tubes, ever since I was a little kid. We had a big tube radio with a mafic eye tuner tube and I loved that. My grandfather was a sound engineer who worked for Bell Labs. He had a sound lab in one room of the house and when we would visit the grandparents I would always get to check out his lab. There were several oscilloscopes as well as equipment with exposed, glowing tubes. So that's why I want a tube amp. It needs to sound good to me and look good to me. It's gonna be connected to am MP3 player so it's not like I abhor silicon. If I had the time I would build one. And maybe down the road I will. Tubes are way different than solid state stuff. Eric
On Sunday, November 4, 2018 at 1:44:53 PM UTC-5, et...@whidbey.com wrote:
> On Sat, 3 Nov 2018 18:05:59 -0700 (PDT), George Herold > <gherold@teachspin.com> wrote: > > >On Friday, November 2, 2018 at 2:26:21 PM UTC-4, et...@whidbey.com wrote: > >> Since I will be playing a low wattage tube amp through speakers it > >> seems that high efficiency speakers are in order. How can I tell the > >> efficiency of a speaker from looking at the specs? > >> Thanks, > >> Eric > > > >Hey Eric, Can I ask why the tube amp obsession? If you're interested > >in how they work, then you could fix up some old one or build your own. > > > >George H. > > > It's not an obsession. It's just that I need a new stereo because the > old one crapped out. The stereo will be in the area where we entertain > and so it should look pleasing. To me at least. I have always exposed > tubes, ever since I was a little kid. We had a big tube radio with a > mafic eye tuner tube and I loved that. My grandfather was a sound > engineer who worked for Bell Labs. He had a sound lab in one room of > the house and when we would visit the grandparents I would always get > to check out his lab. There were several oscilloscopes as well as > equipment with exposed, glowing tubes. So that's why I want a tube > amp. It needs to sound good to me and look good to me. It's gonna be > connected to am MP3 player so it's not like I abhor silicon. If I had > the time I would build one. And maybe down the road I will. Tubes are > way different than solid state stuff. > Eric
"Tubes are way different than solid state stuff." Hi Eric, well first I know almost nothing about tubes, and not much more about audio amps driving speakers. But I've heard that tubes are like Fets. And (being a class A type of guy.) for Fet's you have the things like the Zen Amp (Nelson Pass). And I'm thinking you could do the same thing with a tube... run it class A, and with the right output transformer ('cause of the higher voltage for tubes) You are done. (class A is easy to make and understand.. it just wastes boat loads of power.) Comments from audio types welcome. George H.
On Mon, 5 Nov 2018 06:56:30 -0800 (PST), George Herold
<gherold@teachspin.com> wrote:

>On Sunday, November 4, 2018 at 1:44:53 PM UTC-5, et...@whidbey.com wrote: >> On Sat, 3 Nov 2018 18:05:59 -0700 (PDT), George Herold >> <gherold@teachspin.com> wrote: >> >> >On Friday, November 2, 2018 at 2:26:21 PM UTC-4, et...@whidbey.com wrote: >> >> Since I will be playing a low wattage tube amp through speakers it >> >> seems that high efficiency speakers are in order. How can I tell the >> >> efficiency of a speaker from looking at the specs? >> >> Thanks, >> >> Eric >> > >> >Hey Eric, Can I ask why the tube amp obsession? If you're interested >> >in how they work, then you could fix up some old one or build your own. >> > >> >George H. >> > >> It's not an obsession. It's just that I need a new stereo because the >> old one crapped out. The stereo will be in the area where we entertain >> and so it should look pleasing. To me at least. I have always exposed >> tubes, ever since I was a little kid. We had a big tube radio with a >> mafic eye tuner tube and I loved that. My grandfather was a sound >> engineer who worked for Bell Labs. He had a sound lab in one room of >> the house and when we would visit the grandparents I would always get >> to check out his lab. There were several oscilloscopes as well as >> equipment with exposed, glowing tubes. So that's why I want a tube >> amp. It needs to sound good to me and look good to me. It's gonna be >> connected to am MP3 player so it's not like I abhor silicon. If I had >> the time I would build one. And maybe down the road I will. Tubes are >> way different than solid state stuff. >> Eric > >"Tubes are way different than solid state stuff." > >Hi Eric, well first I know almost nothing about tubes, >and not much more about audio amps driving speakers. >But I've heard that tubes are like Fets. And (being >a class A type of guy.) for Fet's you have the things like >the Zen Amp (Nelson Pass). And I'm thinking you could do >the same thing with a tube... run it class A, and with the right >output transformer ('cause of the higher voltage for tubes) >You are done. (class A is easy to make and understand.. it just >wastes boat loads of power.) > >Comments from audio types welcome. > >George H.
I am looking at class A amps. And the amp will help heat the house in the winter. It never gets too hot here on Whidbey Island so the extra heat in the summer won't be a burden. Eric
On Mon, 05 Nov 2018 10:02:04 -0800, etpm@whidbey.com wrote:

>On Mon, 5 Nov 2018 06:56:30 -0800 (PST), George Herold ><gherold@teachspin.com> wrote: > >>On Sunday, November 4, 2018 at 1:44:53 PM UTC-5, et...@whidbey.com wrote: >>> On Sat, 3 Nov 2018 18:05:59 -0700 (PDT), George Herold >>> <gherold@teachspin.com> wrote: >>> >>> >On Friday, November 2, 2018 at 2:26:21 PM UTC-4, et...@whidbey.com wrote: >>> >> Since I will be playing a low wattage tube amp through speakers it >>> >> seems that high efficiency speakers are in order. How can I tell the >>> >> efficiency of a speaker from looking at the specs? >>> >> Thanks, >>> >> Eric >>> > >>> >Hey Eric, Can I ask why the tube amp obsession? If you're interested >>> >in how they work, then you could fix up some old one or build your own. >>> > >>> >George H. >>> > >>> It's not an obsession. It's just that I need a new stereo because the >>> old one crapped out. The stereo will be in the area where we entertain >>> and so it should look pleasing. To me at least. I have always exposed >>> tubes, ever since I was a little kid. We had a big tube radio with a >>> mafic eye tuner tube and I loved that. My grandfather was a sound >>> engineer who worked for Bell Labs. He had a sound lab in one room of >>> the house and when we would visit the grandparents I would always get >>> to check out his lab. There were several oscilloscopes as well as >>> equipment with exposed, glowing tubes. So that's why I want a tube >>> amp. It needs to sound good to me and look good to me. It's gonna be >>> connected to am MP3 player so it's not like I abhor silicon. If I had >>> the time I would build one. And maybe down the road I will. Tubes are >>> way different than solid state stuff. >>> Eric >> >>"Tubes are way different than solid state stuff." >> >>Hi Eric, well first I know almost nothing about tubes, >>and not much more about audio amps driving speakers. >>But I've heard that tubes are like Fets. And (being >>a class A type of guy.) for Fet's you have the things like >>the Zen Amp (Nelson Pass). And I'm thinking you could do >>the same thing with a tube... run it class A, and with the right >>output transformer ('cause of the higher voltage for tubes) >>You are done. (class A is easy to make and understand.. it just >>wastes boat loads of power.) >> >>Comments from audio types welcome. >> >>George H. >I am looking at class A amps. And the amp will help heat the house in >the winter. It never gets too hot here on Whidbey Island so the extra >heat in the summer won't be a burden. >Eric
It is more a matter of what makes you feel good. Tubes are nice with their cheerful glow and well-behaved characteristics. I understand their esthetic appeal, and having grown up with tubes I do miss building tube amps. But if sound matters, you'd be hard pressed to build a better amp than the Nelson Pass Zen amps, particularly some of the iterations that have refined the basic Zen. You will still generate heat... AND if you want, you could use one of the designs that uses big 100W incandescent lamps for the positive resistance coefficient of tungsten to supply the ballast to the current regulator for Class A. Check out some of the Pass designs that people have built, some are downright sexy. Building from scratch takes longer and is more rewarding... any idiot can slap together a kit.