Post pics of your builds....

[skyskraper]

i found my dynalo got warm but never hot, not anywhere near m3 heatsink temperature.

[bg4533]

Originally Posted by [AK]Zip

How do you like the sound compaired to your PPA?

Another member just asked me this in PM. Below was my response:

"My PPA has a Steps PSU and Glassmans new buffers. I use OPA627s. It probably cost twice as much as the Dynalo to build.

I have only listened to the Dynalo for about 2 hours so far.

My PPA has a darker sound, but that is of course changable by opamps. There seems to be a little more space around everything and a bigger soundstage. The Dynalo seems puchier all around. Everything has more of an edge to it. The highs are a little different than the opamp based amps I have heard. It seemed bright at first, but the treble is growing on me.

So far I prefer the PPA, but I have not heard the Dynalo enough to say for sure. I think this Dynalo is probably similar in performance to a basic PPA (Elpac and intersil buffers)

I am currently working on a nicer Dynalo. The plan is for a Dynahi PSU, nicer pot, preamp fuctionality and a few other upgrades. I probably won't finish it for a while though."

I will also add that detail seems similar so far with the PPA probably a little ahead. Both amps seem to emphasize different detail.

I don't know the exact cost of this Dynalo, but it is probably close to that of a decent Pimeta. The Dynalo is definately better than the fairly high end Pimetas I have built.
----------------------
edit:
Since I brought up the Pimeta I should mention that the Dynalo is a bit more complicated to build. Experienced DIYers should have no problem, but I wouldn't recommend it to a beginner. I still think the Pimeta is a nice amp, especially if you want something battery powered.

[[AK]Zip]

Originally Posted by bg4533

Another member just asked me this in PM. Below was my response:

"My PPA has a Steps PSU and Glassmans new buffers. I use OPA627s. It probably cost twice as much as the Dynalo to build.

I have only listened to the Dynalo for about 2 hours so far.

My PPA has a darker sound, but that is of course changable by opamps. There seems to be a little more space around everything and a bigger soundstage. The Dynalo seems puchier all around. Everything has more of an edge to it. The highs are a little different than the opamp based amps I have heard. It seemed bright at first, but the treble is growing on me.

So far I prefer the PPA, but I have not heard the Dynalo enough to say for sure. I think this Dynalo is probably similar in performance to a basic PPA (Elpac and intersil buffers)

I am currently working on a nicer Dynalo. The plan is for a Dynahi PSU, nicer pot, preamp fuctionality and a few other upgrades. I probably won't finish it for a while though."

I will also add that detail seems similar so far with the PPA probably a little ahead. Both amps seem to emphasize different detail.

I don't know the exact cost of this Dynalo, but it is probably close to that of a decent Pimeta. The Dynalo is definately better than the fairly high end Pimetas I have built.

Thanks you. You have just pushed me away from building another Pimeta and I will not look into a Dynalo amp. Always nice to try something new.

-Alex-

[bg4533]

Originally Posted by skyskraper

i found my dynalo got warm but never hot, not anywhere near m3 heatsink temperature.

It isn't really hot. The transistors are hot to the touch, but I doubt they could ever burn me. The case gets warm to the touch. I am used to opamps which put out very little heat.

[Vadi]

Finally I finished my Pimeta! I found a nice shop where you get custom made batteries. In my case there are 8 2100mAh Ni-MH cells (I destroyed my first 8 2300mAh ).

It's got a deep discharge protection too (behind C4).

[Aye75]

Although a bit late from the rest of the pack ... here's some pics of my almost completed PPA V1

Top view :


External :




Internal :


Still have to work on the STEPS which ain't finished yet at the moment ... and havent really decided on the power & bass boost switch ... was thinking either stick with the squarish power button you see in the first pics matched with a black dpst toggle switch or either a pair of matching bulgin swithes for both the power and bass boost button (which should cost me a lot more)
Hrmmm decision decisions ... also planning to upgrade to glassmans buffers in the future ...

Ohh and before someone asks ...the blue stuffs in the last pics are blutacks ...most of the caps are dampened with blutack on the underside...not sure of the effect it adds tough since didnt test it without em

enjoy !

[bg4533]

I guess I never posted pics of my PPA either. I finished it up a few months ago.

PPA V1.1
Steps PSU
Par metals case
Elna Silmic 2 electrolytics
Glassmans diamond buffers

The knob on the left is a rotary switch. Furthest left the amp is off. Next click the amp is on and output is sent to the RCAs on the back. Next click output is to the headphones. This also prevents any turn on/off thump from hitting the headphones.

[phobus]

Originally Posted by bg4533

So far I prefer the PPA, but I have not heard the Dynalo enough to say for sure. I think this Dynalo is probably similar in performance to a basic PPA (Elpac and intersil buffers).

The dynalo (djgardner's layout) for me is definately the price/performance winner, as it only cost me about $80usd to build including the Elpac. I used a Panasonic EVJ pot in mine, and no Vishay Dale resistors, but hey if its good enough for the Gilmore Lite







Oh I also put together a diyparadise Monica 2 NOS dac with a 9v TREAD. The TREAD is so handy!

[EdipisReks]

bg4533, i thought your dynalo sounded very nice. i wish i could have listened to your PPA with something other than the SA5000's, but with the tower of Singlepower and the Moth taking up all the listening time, what are you gonna do?

[skyskraper]

aye75, i like that enclosure with two front panels, very clean. which one is it?