Member
Joined 2002
I haven't been around much, been lurking around still reading lots still, but haven't been keeping up with all the pass projects.
My goal, is to find a simple, Pre-Amp for my aleph mini's simple is key so i can still achieve CLEAN sound, but something louder than the Passive pot im using.
I;m running the Mini smd alephs x 4 in se mode ( rca single ended ) 2 amplifiers per speaker, ( one for tweeter one for mid bass )
I am currently working on new cabinets to house my new Ribbon Tweeters ( thanks Planet10 ) and my davis 6.5" efficient drivers.
I only have one source, my fave cd player.
So, ideas schematics pictures are all welcome. 🙂
J'
My goal, is to find a simple, Pre-Amp for my aleph mini's simple is key so i can still achieve CLEAN sound, but something louder than the Passive pot im using.
I;m running the Mini smd alephs x 4 in se mode ( rca single ended ) 2 amplifiers per speaker, ( one for tweeter one for mid bass )
I am currently working on new cabinets to house my new Ribbon Tweeters ( thanks Planet10 ) and my davis 6.5" efficient drivers.
I only have one source, my fave cd player.
So, ideas schematics pictures are all welcome. 🙂
J'
If you plug the CD directly into your power amp is it loud enough? If so, a B1 would help.
If not, I defer the question.
HTH
Doug
If not, I defer the question.
HTH
Doug
If your cd player has enough output you may not even need a B1 (/ buffer). I would simply try a 5K potentiometer first.
Member
Joined 2002
Hi,
If you think the B1 is not sufficient, then you might want to take a look at this thread:
http://www.diyaudio.com/forums/showthread.php?t=146310&highlight=BF862
It's high on my list of things I want to make soon....
Cheers
Nigel
If you think the B1 is not sufficient, then you might want to take a look at this thread:
http://www.diyaudio.com/forums/showthread.php?t=146310&highlight=BF862
It's high on my list of things I want to make soon....
Cheers
Nigel
Our posts crossed... The preamp in the link I posted has a gain of 2, if I recall correctly.
Nigel
Nigel
Would it be possible to reduce the feedback of your Aleph's?
A simple mod if you enjoy your setup.
A simple mod if you enjoy your setup.
I suggested removing the passive pot. It may be loading down the CD output. If its loud enough direct connected, a buffer would help, by allowing a higher value pot without loosing HF response or volume.
Try it and let us know.
Doug
Member
Joined 2002
Member
Joined 2002
I found one of my NICE op-amp pre-amp's that i used to use, i used to use it because i loved the sound but it didn't have enough gain, its a opa627, i was told i could use a resistor across 2 pins to give it more gain, however i can't remember the value of the resistor NOR what pins 🙁
Member
Joined 2002
Thanks Peter, what should i start off with ? Could i just use a pot ? and remove the one between the signal input ?
J'
consider thinking outside the box and upping the Cd players gain, Oh hold on thats thinking inside the Cd players box!
Member
Joined 2002
the sony cd player is pretty good, peter Daniel has the same one, and until i can buy a good one from work ill use what i have 🙂
J'
Member
Joined 2002
make it as is .
use even TL072 there for start , to see what suits your needs .
in any case - making that preamp is easier than ask ....... or putting brain in working state ( God forbid !! )
Operational amplifier - Wikipedia, the free encyclopedia
use even TL072 there for start , to see what suits your needs .
in any case - making that preamp is easier than ask ....... or putting brain in working state ( God forbid !! )
Operational amplifier - Wikipedia, the free encyclopedia
Member
Joined 2002
Good thing that was all in english, i asked a simple question and got some stuff that well, giberish i say.
How hard is it to just specify a number, since the product is already running, i don't need or want to change the opamps.
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