I was using the original probe, high impedance probe with a 32 ohm dummy load connected at the output of the ampli
okay so we can rule out the probes and scope to be responsible for the noise pickup. I f I have time this WE I will measure mine so we can compare results. But it should definitely be dead quiet to the ear when listening to it, no source signal and the volume cranked all the way up.
If you want, you can expand your whammy to include the entry-level version of the Accuphase E550. You can purchase the circuit board or kit for the inputs of the Accuphase E550 under the eBay item number: 145164598364 These are two balanced XLR and two RCA inputs, the output is RCA. The inputs are selected with a switch.
Greetings Wolfgang
Greetings Wolfgang
Hallo Wolfgang,
thanks for your link! However, in case of the the Whammy, I think (IMHO) that this board is adding unnecessary complexity to the headphone amp. Don't get me wrong, sym inputs are way undoubtably better than assym inputs, but here it would take a sym signal, de-symmetrise it, and then feed the output to the original Whammy circuit: so it adds another step into the signal.
From my experience, either a circuit has to be designed for sym inputs from the beginning, or the best is to accept the unsym inputs and make the best out of it. At least that's from my experience.
Did you try that board? What are your impressions? I'd be glad to be shown wrong here!
Cheers
Denis
thanks for your link! However, in case of the the Whammy, I think (IMHO) that this board is adding unnecessary complexity to the headphone amp. Don't get me wrong, sym inputs are way undoubtably better than assym inputs, but here it would take a sym signal, de-symmetrise it, and then feed the output to the original Whammy circuit: so it adds another step into the signal.
From my experience, either a circuit has to be designed for sym inputs from the beginning, or the best is to accept the unsym inputs and make the best out of it. At least that's from my experience.
Did you try that board? What are your impressions? I'd be glad to be shown wrong here!
Cheers
Denis
Hello Dennis
I ordered a board of this and will change the configuration a bit when I have it. More on that when the time comes.
From my personal point of view, this board is extremely practical for the Whammy, as there is nothing with RCA connections in my hobby of musicians. That's why I need the XLR. I also swap the Neutrik NC3 FD-LX-B for Neutrik NCJ9 FI-S. The Neutrik NCJ9FI-S have a switching contact. have a switching contact. This means I even have an additional RCA connection on the Whammy. Before I came up with the idea of the Chinaman board, I used a Monacor LTR-110 as an input transformer. MyWhammy is also getting a new housing: HiFi Amplifier Enclosure Amplifier Aluminum Chassis DAC Enclosure Amp DIY Box
Greeting
Wolfgang
I ordered a board of this and will change the configuration a bit when I have it. More on that when the time comes.
From my personal point of view, this board is extremely practical for the Whammy, as there is nothing with RCA connections in my hobby of musicians. That's why I need the XLR. I also swap the Neutrik NC3 FD-LX-B for Neutrik NCJ9 FI-S. The Neutrik NCJ9FI-S have a switching contact. have a switching contact. This means I even have an additional RCA connection on the Whammy. Before I came up with the idea of the Chinaman board, I used a Monacor LTR-110 as an input transformer. MyWhammy is also getting a new housing: HiFi Amplifier Enclosure Amplifier Aluminum Chassis DAC Enclosure Amp DIY Box
Greeting
Wolfgang
Adding 4 (dual, socketed) ICs to the signal path, additional hookup writing, interconnects and sockets/plugs, with sub-par voltage rails regulation, will do the job of converting the balanced input to single-ended output, but the sound quality will be ruined. The PCB layout seems questionable as well. A lot will depend on how you are going to wire up the whole thing inside its separate box... to obtain hiss/buzz-free performance.
A good-quality transformer would do better, especially if you somehow find a way to install the transformer inside the WHAMMY inclosure (away from the mains transformer), with a great many benefits with such an approach... like, you will not have to use the additional interconnect cables, additional conversion box/pre-amp (with sub-par voltage rails' regulation), additional hook-up wiring...
Therefore, I suggest that you try a small transformer that should fit easily inside the WHAMMY - the Cinemags will fit nicely, and are pretty good for the money. Or, if you want something even better and more expensive, choose a Lundahl or similar...
A good-quality transformer would do better, especially if you somehow find a way to install the transformer inside the WHAMMY inclosure (away from the mains transformer), with a great many benefits with such an approach... like, you will not have to use the additional interconnect cables, additional conversion box/pre-amp (with sub-par voltage rails' regulation), additional hook-up wiring...
Therefore, I suggest that you try a small transformer that should fit easily inside the WHAMMY - the Cinemags will fit nicely, and are pretty good for the money. Or, if you want something even better and more expensive, choose a Lundahl or similar...
Behringer OT-1 transformers are very, very nice too and are shielded. They can be salvaged from broken DI4000. They have 4 of those transformers in them and can be bought for very little money.
Hello!
I am new to the DIY community and I decided to build a Whammy as my first amp (bought the complete kit)! I think I have everything where it needs to be but I have 1 cap that I am unsure of where it should go. Could anyone help me? This has been so fun but I haven't plugged it in yet because I want to make sure that everything is accounted for.
I am new to the DIY community and I decided to build a Whammy as my first amp (bought the complete kit)! I think I have everything where it needs to be but I have 1 cap that I am unsure of where it should go. Could anyone help me? This has been so fun but I haven't plugged it in yet because I want to make sure that everything is accounted for.
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I never heard of the Tangent PPA...it looks interesting indeed. Do you own the Tangent?
For sure, the Whammy draws much higher currents and there's no way it could be easily used as a mobile HPA.
For sure, the Whammy draws much higher currents and there's no way it could be easily used as a mobile HPA.
Yes, I built the PPA many years ago and have always liked it. I power it with Tangent's STEPS power supply & don't use it as a mobile amp - it's a little big for that anyway. It does easily drive my HiFiMan HE-500s, so it can provide some juice.