Getting yet closer...
I would like to get your feedback on interest in a pre-made 3D printed custom case for this new amp. Of course it won’t be cheap (free) like a mint tin. Probably $30 price range is my guess. Won’t know until we get number of interested people.
I would like to get your feedback on interest in a pre-made 3D printed custom case for this new amp. Of course it won’t be cheap (free) like a mint tin. Probably $30 price range is my guess. Won’t know until we get number of interested people.
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Great! I hope more people sign on with interest as well.
More progress from JPS64. The Altoids mint tin user interface is evolving. We are back to the through hole Switchcraft Jacks. There may be an all SMT I/O and volume pot mezzanine PCB.
More progress from JPS64. The Altoids mint tin user interface is evolving. We are back to the through hole Switchcraft Jacks. There may be an all SMT I/O and volume pot mezzanine PCB.
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I started a new thread to discuss technical aspects of the new amp. It will be called the Hakuin HPA.
Hakuin SE Class A HP Amp
Hakuin SE Class A HP Amp
Alas, the build party just wasn't going to happen. No one wanted to try their hand at SMD work. So, I put these together yesterday for some people on my "Nice" list. Come to think of it, maybe the naughty people should get them...
Now, I need to munch down three tins of the Peppermint and do some casework
For a pocket-sized HP amp - It is darn near impossible for me to beat these. I take one with me almost everywhere. It's amazing the interest it generates. People in airports / on planes are the most curious. My friends can't believe the sound even for use with a phone. I've already given away my first two. I was in withdrawal for a few weeks without one. I'm keeping one of these and not letting it go. No more builds. Seven is enough.
I can't wait to hear people's impressions of the Hakuin. I've been following along on the other thread. Love the new ergonomics.
@XRK971 - Thanks again for the assistance on my first build, posting the new BoM for low impedance phones, and for putting together an extremely fun project.
Now, I need to munch down three tins of the Peppermint and do some casework
For a pocket-sized HP amp - It is darn near impossible for me to beat these. I take one with me almost everywhere. It's amazing the interest it generates. People in airports / on planes are the most curious. My friends can't believe the sound even for use with a phone. I've already given away my first two. I was in withdrawal for a few weeks without one. I'm keeping one of these and not letting it go. No more builds. Seven is enough.
I can't wait to hear people's impressions of the Hakuin. I've been following along on the other thread. Love the new ergonomics.
@XRK971 - Thanks again for the assistance on my first build, posting the new BoM for low impedance phones, and for putting together an extremely fun project.
I've had some issues with the Hitech 9V Lithium-Polymer batteries that I originally bought.
So, I've just ordered a set of six of the EBL batteries that you use in the PCAA.
Two will go in the Amp, and the other four get transported in a protective case.
My chargers are designed for Li-Ion & Li-Polymer - so they should work with the EBL batteries.
One charger is at home, and one is at work.
I do like the sound of the NHB PCAA, but I do wish it wasn't necessary to mess about with swapping / recharging pairs of 9V batteries.
Looking forward to the convenience of the new design.
So, I've just ordered a set of six of the EBL batteries that you use in the PCAA.
Two will go in the Amp, and the other four get transported in a protective case.
My chargers are designed for Li-Ion & Li-Polymer - so they should work with the EBL batteries.
One charger is at home, and one is at work.
I do like the sound of the NHB PCAA, but I do wish it wasn't necessary to mess about with swapping / recharging pairs of 9V batteries.
Looking forward to the convenience of the new design.
I have an odd symptom with one of my amps, and I am at wits' end.
When I was doing my initial music checks, I was using standard alkaline batteries. All 5 just moving along wonderfully. I was debating whether or not to include some of the EBL rechargeable batteries with the gifts. I've used them with my previous two for several months with no issues.
As I was checking through all the amps with the EBLs (fully charged ~8.33VDC) only one of the amps will not power up with the EBLs. Occasionally with the two I built in the past, I'd need to turn it off and and on again to get the protection circuit in the batteries to bypass. Or at least that's what I generally understood from previous posts in a general sense. This one amp... out of the seven I've built, will only power up with the alkaline batteries. At first the LED would pop up and glow dimly, then fade. Now, it won't even glow dimly. I've checked all cap joints (We have to bend a few, so I though perhaps I'd had a cold / intermittent joint). Again, with alkaline batteries (even at ~7.5V) it works just fine.
Could anyone point in a direction? I could just tell the lucky recipient to run alkaline batteries, but that seems like a cop out.
With thanks!
When I was doing my initial music checks, I was using standard alkaline batteries. All 5 just moving along wonderfully. I was debating whether or not to include some of the EBL rechargeable batteries with the gifts. I've used them with my previous two for several months with no issues.
As I was checking through all the amps with the EBLs (fully charged ~8.33VDC) only one of the amps will not power up with the EBLs. Occasionally with the two I built in the past, I'd need to turn it off and and on again to get the protection circuit in the batteries to bypass. Or at least that's what I generally understood from previous posts in a general sense. This one amp... out of the seven I've built, will only power up with the alkaline batteries. At first the LED would pop up and glow dimly, then fade. Now, it won't even glow dimly. I've checked all cap joints (We have to bend a few, so I though perhaps I'd had a cold / intermittent joint). Again, with alkaline batteries (even at ~7.5V) it works just fine.
Could anyone point in a direction? I could just tell the lucky recipient to run alkaline batteries, but that seems like a cop out.
With thanks!
Darn you!
I was all set to prove you wrong. Then I tried three "on-off" cycles. This one unit... needs three. Not one... not two... three. Rather than look like a numbskull, I actually read back in my notes and in the thread before asking. It's odd. It only does it on one out of the seven that I've built. All the others only need one "flip on and off" vs. the magic number of three for this "special limited edition" version.
Oh well, those are brain cells I'll never get back.
Sincerely - all joking aside. Thanks!