Epos
Yes, that would be nice.
In my room I have a pair of Epos 11 speakers.
They are a little old, but I'm not thinking of changing them.
I just love their sound.
8 ohms, and around 87 db sensitivity.
It's not very sensitive, right, but damn, they play so well...
Steve Eddy said:
Yes, that would be nice.
In my room I have a pair of Epos 11 speakers.
They are a little old, but I'm not thinking of changing them.
I just love their sound.
8 ohms, and around 87 db sensitivity.
It's not very sensitive, right, but damn, they play so well...
ok I`ll repeat this...LOL....I use 4 batteries.....2 connected in series to get + and -24vdc.....they are panosonic rechargeble Gel-cells...measuring 5x2x3 inches......same ones that are used in UPS and emergancy lighting....all I did was build a auto sensing charging circuit to keep them topped up......they have been powering my pre amp for about 10 years....the pre amp has onboard +-20vdc regulators
Cheers!!The DIRT®
Cheers!!The DIRT®
What?????? Ten Years???😱 Ten years............. WOW!
I heard from someone, that the cells will not last more than 2 or 3 years!
That's why I did not build it.
This is great news!
Thanks Joe
Audiofanatic 😉
carlosfm said:
My speakers are 93dBs, so 30W should work fine. I also want to keep things simple and don't complicate the charging setup too much.
Gels and cars
I'm going to tell you a story.
Once I needed a battery for my wife's car and I remembered I had a 32 amperes Gel battery that was given to me by a guy from a telephone company.
It was an Hitachi, if I remember.
The car had that battery, without one single problem, for around 8 years.😱 😱 😱
Then, here in Portugal they started the vehicle inspections and they made me change that battery, because it was not properly secured.
Unfortunately I was stupid enough to throw the battery away.😱
Audiofanatic said:
Ten years............. WOW!
I heard from someone, that the cells will not last more than 2 or 3 years!
That's why I did not build it.
This is great news!
Thanks Joe
Audiofanatic 😉
I'm going to tell you a story.
Once I needed a battery for my wife's car and I remembered I had a 32 amperes Gel battery that was given to me by a guy from a telephone company.
It was an Hitachi, if I remember.
The car had that battery, without one single problem, for around 8 years.😱 😱 😱
Then, here in Portugal they started the vehicle inspections and they made me change that battery, because it was not properly secured.
Unfortunately I was stupid enough to throw the battery away.😱
I bought a new Toyota Corolla -94 in 1994, it has +11.000.km behind it on the same battery, and I have no plans to change it yet 😀
As a matter of fact I have never done anything but the ordinary service plus buying new tires ONCE. Talk about economic cars those japs.
/Peter
As a matter of fact I have never done anything but the ordinary service plus buying new tires ONCE. Talk about economic cars those japs.
/Peter
Hi Pan,
I know everything about the Toyota's!
I work at a Toyota dealer and to be honest, it's the best car in the world, most reliable one.
Thats why Wadia uses TEAC VRDS Transport's.
Audiofanatic 😉
I know everything about the Toyota's!
I work at a Toyota dealer and to be honest, it's the best car in the world, most reliable one.
Thats why Wadia uses TEAC VRDS Transport's.
Audiofanatic 😉
Joe Dirt:
Could you please post your schematic for your battery setup? If you use 2 12V batteries in series per side, wouldn't that give you +/- 12V with a ground in between? I appreciate your response.
Vic
Could you please post your schematic for your battery setup? If you use 2 12V batteries in series per side, wouldn't that give you +/- 12V with a ground in between? I appreciate your response.
Vic
Cat off the balcony?
How bout a lawnmower powered gain clone?
http://theepicenter.com/tow082099.html
Please, dont hurt me. I just stumbled across this from a /. story... and well, non sequetors and mixed metaphors have always made me laugh.
But then, my wife often points out that my sense of humor is mostly for my own enjoyment.
How bout a lawnmower powered gain clone?
http://theepicenter.com/tow082099.html
Please, dont hurt me. I just stumbled across this from a /. story... and well, non sequetors and mixed metaphors have always made me laugh.
But then, my wife often points out that my sense of humor is mostly for my own enjoyment.
JOE DIRT® said:
Which version?
I use AutoCAD as well, and what I do is spit out a DXF, pull it into PageMaker, copy it and then paste it into CorelXARA as a Windows Metafile (XARA doesn't import DXF files) and then dress it up there and spit it out as a JPG.
Only problem is that elements such as polylines don't translate well so I replace nodes with circles and things like triangles (for transistors, diodes and whatnot) into simple line shapes.
If you'd like, EMail me the DXF file and I'd be happy to generate a JPG for you.
se
To keep the charging system as simple as possible, I am considering using one series of batteries for both channels. Do you think that there would be any cross-talk at the battery terminals? If so, would placing capacitors at the + and - opamp rails (like the 1000uF ones used for transformer PSUs) reduce this? I haven't compared battery PSUs w or w/o the capacitors yet.
Vic
Vic
vic said:
Sure, that'll work.
Though what do you plan to do to keep your right ear from hearing what's coming out of your left speaker and vice versa? 😀
se
vic said:
I am using this kind system and I prefer it with caps in.
however if you wanted to go for a battery supply for each channel charging can be done very simply using 1 transformer ( 9v ac per battery ) and 1 bridge rectifier for each battery. It worked well for me.
cheers
mike
Steve.
LOL that is the Best case against Mono Blocks i have ever heard. I Use Closed Type headphones to Keep the Ears and the respective sounds going to each separate to the point that bone conduction will allow. With headphone Amps Dual mono is a small but noticeable improvement in Imaging.
With Conventional AC powered Loudspeaker Amps Dual mono and Monoblock seam to also Improve the soundstage. This i think is because of the wide voltage changes on the Power transformers output with the music. Using High Current car batteries as perposed hear i think the advantages of Dual mono would not be so great or maybe any benifit at all.
LOL that is the Best case against Mono Blocks i have ever heard. I Use Closed Type headphones to Keep the Ears and the respective sounds going to each separate to the point that bone conduction will allow. With headphone Amps Dual mono is a small but noticeable improvement in Imaging.
With Conventional AC powered Loudspeaker Amps Dual mono and Monoblock seam to also Improve the soundstage. This i think is because of the wide voltage changes on the Power transformers output with the music. Using High Current car batteries as perposed hear i think the advantages of Dual mono would not be so great or maybe any benifit at all.
ppl said:
Don't laugh. I know at least one person who has one speaker in one room and the other speaker and another room and they listen sitting at the end of a partition that divides the two rooms. 🙂
se
That is a little off. That person might as well use headphones. The way we localize sound in space is by the slight difference in time sound arrives in one ear before the other.
It shouldn't make a difference if one uses open or closed headphones in regards to stereo. If you're worried about bone conduction using headphones, man, take it easy on the volume levels! You must be really cranking it to vibrate the headphones themseves. Spare your ears, man.
Vic
Vic. I my self listen to headphones at a level just above normal conversation because i am aware of the possibility of hearing damage. regarding bone conduction i understood this to take place at any volume level due the direct contact of the headphones to the ear. however the source of this info could be wrong.
regarding the person that steve mentioned i also thought that headphones would be more ideal than the wall. i however am not one to critisize someones listening preferences.
regarding the person that steve mentioned i also thought that headphones would be more ideal than the wall. i however am not one to critisize someones listening preferences.
I don't know if this is a practical suggestion but would it be possible to use two 'sets' of much smaller batteries that don't cost very much and then design a circuit so that they are switched in and out of service for recharging on a more frequent basis?
I was thinking of a control system based on a timer that could, after a preset time, say one hour, wait until it detects a break in the music between tracks, before switching in the second set of batteries and recharging the first.
If batteries only need to last an hour, they could be quite small and presumably cheaper.
I was thinking of a control system based on a timer that could, after a preset time, say one hour, wait until it detects a break in the music between tracks, before switching in the second set of batteries and recharging the first.
If batteries only need to last an hour, they could be quite small and presumably cheaper.
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