No, I have made corrections including the jumper wire from pin 1 to pin 3 of the euro block as illustrated in post #9580 and have been enjoying listening to an amazing amp! Thanks again for all the help everyone was so quick to give!
Maybe send Jim a quick note and he can add it to post #1?
Hello all,
It's been a few years (2019) since I was on this thread keeping up with the builds. Have a question; did a search but cannot locate a single post. I bought my boards in 2014. I see now there's a "Rev D". Is a Rev D board different from the original boards I purchased in 2014? Or just different in parts? The picture of the boards on the store don't show a revision so I'm thinking no difference there.
Thanks,
Gary
It's been a few years (2019) since I was on this thread keeping up with the builds. Have a question; did a search but cannot locate a single post. I bought my boards in 2014. I see now there's a "Rev D". Is a Rev D board different from the original boards I purchased in 2014? Or just different in parts? The picture of the boards on the store don't show a revision so I'm thinking no difference there.
Thanks,
Gary
In response to my post on increasing bass response on Aleph J/ B1 Korg:
Thanks for the response. So like a .5 ohm resistor? 5 watt? Does increasing resistance increase or decrease bass? Also what do you think of messing around with Papa's Equalizer for full range speakers kit though my speakers aren't full range type? I've played with port dimensions and that helped some. I don't have a speaker measuring setup but maybe able to borrow one. Not trying for complicated here just better.it's easy regarding bass - just add fraction of Ohm resistor in line with speakers
resulting Qtc will go up, maybe you'll like it
I could be wrong on this, but I believe that the boards are unchanged (no revisions). If it were me, and if my boards look like the boards in the store pics, then no worries.
However, there are two versions of the Bill of Materials posted. C and D.
The link for C should take you to a post by henryve who graciously compiled a BoM. Post #265 if the Aleph for UMS thread.
The link for D should instruct your browser to download a .pdf.
I have not done a line-by-line comparison, but I'd use D based on a very quick scan. Others may like to tweak a bit more. I'd also verify all the parts against the suggestions in the first post of this thread and throughout the thread.
AND/OR... you could check out this blog, which I think was extremely well done. I think it provides a BoM and/or even a Mouser cart.
https://diyalephj.blogspot.com/
Enjoy the tunes!
try it, good value for start
I wrote - it'll up Qtc (total cabinet Q factor) slightly increasing bass frequencies in vicinity of F3
I wouldn't include another Eq stage in front of perfectly functional amp
I might add that when i tested running the B1 Korg as preamp for my Aleph Js, my impression was that it got to be a little to much of a good thing. The resulting sound was very soft and inviting, but lost too much sub bass depth and raw control, and lost to much transient impact and authority for my liking.
But The B1 Korg works Real magic with my small Genelec 2.1 setup at work, wich have all out active class A/B amplification. Here the B1 brings the system just the right amounth of added life with a little more juice and inviting lushness.
But The B1 Korg works Real magic with my small Genelec 2.1 setup at work, wich have all out active class A/B amplification. Here the B1 brings the system just the right amounth of added life with a little more juice and inviting lushness.
Yeah... It's all about the synergy of the whole system. A long time ago, this is what the HiFi dealers used to do very well.
Mind you, I can make my Aleph J sound exactly as you described... either a bit soft, (a bit too) polite, mellow and enveloping (but still with great bass and top end), or raw, very extended & very detailed (which I tend to like better overall.... mostly because my source is pretty good).... just by changing two capacitors and one wire link.
Mind you, I can make my Aleph J sound exactly as you described... either a bit soft, (a bit too) polite, mellow and enveloping (but still with great bass and top end), or raw, very extended & very detailed (which I tend to like better overall.... mostly because my source is pretty good).... just by changing two capacitors and one wire link.
Thought I'd drop a line to let everyone know that my dual mono diyAudio Aleph J built with most excellent assistance from the forum is alive and well.
It has proven to be dead nuts reliable and just keeps on bringing all the music.
I've had the parts for M2x boards to fit in the AJ chassis (5U) and a complete SissySIT in a 4U on hand for a few years now,
but every time I think about getting the soldering iron out I listen to the AJ again, and next thing you know several months have gone by.
Just an outstanding piece of audio equipment which is straightforward enough that an electrician who can solder can muddle through building one.
All systems are a chain, and the AJ certainly does its part.
Audiolabs CDT6000-Schitt Gungnir Multibit-Iron Pumpkin #002-Dual mono AJ-Tekton Lore Reference-Rythmik L12
Thanks, Papa
It has proven to be dead nuts reliable and just keeps on bringing all the music.
I've had the parts for M2x boards to fit in the AJ chassis (5U) and a complete SissySIT in a 4U on hand for a few years now,
but every time I think about getting the soldering iron out I listen to the AJ again, and next thing you know several months have gone by.
Just an outstanding piece of audio equipment which is straightforward enough that an electrician who can solder can muddle through building one.
All systems are a chain, and the AJ certainly does its part.
Audiolabs CDT6000-Schitt Gungnir Multibit-Iron Pumpkin #002-Dual mono AJ-Tekton Lore Reference-Rythmik L12
Thanks, Papa
Hi, Good post. I'm curious, when you say "dual mono", did you build 2 amps, or did you build one with completely isolated L-R channels? Do you find the power output is adequate for your speaker efficiency? Which speakers do you have, or what is their efficiency?
Happy listening!
Happy listening!
nothing wrong with soldering while listening
I'm doing that all the time - practically never one without other and vice versa
in fact, only when I'm in bedroom there is no music - Boss forbade
One chassis, 2 power supplies for isolated L&R channels.
https://tektondesign.com/product/full-range-speakers/mid-towers/lore-reference/#color
Mine are black. with grill covers.
Been thinking about getting a pair of these: https://tektondesign.com/product/full-range-speakers/full-towers/the-perfect-set/#color
Yes, I quite like Tektons. The owner, Eric is a right kind of guy to boot.
Yeah, but AJ place and listening place are not the same place.
Dug out the SissySIT parts yesterday...........