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fxbill

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fxbill last won the day on October 31 2020

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About fxbill

  • Birthday 04/02/1946

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  1. All and any rap, hip hop, heavy metal, ultra modern progressive jazz....and oh yes...Taylor Swift! ( Gosh, I'm picky!)
  2. @DaddyJT "Can you share the impedance of the volume pot? Remote volume is a deal-breaker for me, and curious of the possibility of modding it..." × Hi.... We use the ALPs 20K although we have also used a 100K with good results as well, although the 100K is a bit more sensitive at the bottom end and the 20K seems a bit more linear...no difference in sound though...only in the volume settings for the unit. We already have a remote kit that can easily be added to the unit and quite possibly our next model will include it, but the power transformer I had custom built for this unit already has extra taps at 6v, 9v and 12v for adding any options that might be needed. The remote we found has power on and off, mute and volume. It already has the motorized ALPs pot on it and it fits perfectly into our face plate. It requires 5 volts to run it and the 6 volt tap from our transformer will work perfectly since the remote board already has a 7805 5 volt regulator built in. The only thing that needs to be changed aside from the volume control is the main power switch that we have. It needs to be changed to a momentary switch instead of a latching switch. Fortunately we planned ahead on this and the switch we use is already available in both latching and momentary. Change that out and add the remote kit and one power relay which is controlled by the remote board (the relay costs less than $10) and there you have it. Easy squeezy. I'd estimate several hours to do the complete changeover.
  3. Because of the delays we experienced with some parts and shipping boxes our initial sales got off to a rather late start...half way through the 1 month sale originally planned. I have convinced JG to extend the sale for another 2 weeks....until the 15th of April to make up for the 2 weeks of lost time at the beginning of the sale. Either JG or I can be contacted for more information. Thank you for the support we have so far received! FXB
  4. Because of the delays we experienced with some parts and shipping boxes our initial sales got off to a rather late start...half way through the 1 month sale originally planned. I have convinced JG to extend the sale for another 2 weeks....until the 15th of April to make up for the 2 weeks of lost time at the beginning of the sale. Either JG or I can be contacted for more information. Thank you for the support we have so far received! FXB
  5. The Alps pot you're looking for is the 27mm Size Metal Shaft Type RK271 Series ALPS and is available in many resistance values. We have used both the 20K and 100K and had excellent results with either. Do not order the stepped fixed resistor ladder type that you can get on eBay for about $6. The steps were too wide apart for our purposes and it was not always possible to get the exact volume that we wanted with it. One step might be too low and the next step would jump to being too high. It might work just fine for your use though. The ones we use cost about $10-$15 on eBay and there are only a few sellers in the US who stock them. Most sellers have the cheaper stepped units. They look very much alike, but the stepped units usually have a fixed loudness tap on them giving them 4 terminals for each section. They're still quality pots, but lack the flexibility of the infinitely variable Alps which only has the normal 3 terminals per section. There are also fake ones out there that are not truly made in Japan. Check feedback on whoever you purchase one from! We order ours directly from the manufacturer to ensure that we have the real deal. We do have some stepped units here that we originally purchased since I normally like fixed resistor "ladder" typed volume controls. We can sell you one at cost if you think you'd like to try one. It might be fine for your purposes.
  6. I think you'll find that the silver anode 6N2's are going to sound as good or better than any 12AX7 you can sub in it, but I'll be very interested in hearing what your experiences are! They have a lower floor noise and lower microphonics of most 12AX7's and are rated at up to 10K hrs of use. The bottom end is also supposed to be better as well. The single 6N1 can be directly subbed with a 6DJ8. We tried several brands including Bugle Boys and the 6N1 sounded better...( to us anyway). Interesting thread here...... https://www.diyaudio.com/forums/tubes-valves/65548-6922-vs-6n1p-bass-response.html
  7. I just started a thread about these adapters and their use that includes some info about the 6N1 and 6N2 tubes and rolling tubes in the preamp.
  8. There are adapters available to allow extensive tube rolling the the new preamplifier. They're available on Fleabay for a nominal cost. These adapters can be used to roll 12AX7's in place of the 6N2's and/or to use12AU7's in place of the 6N1 tube. Our preamp case height was specifically designed to allow room to use these adapters without any height restrictions placed on them. Also...in most cases the 6DJ8 can be used as a sub for the 6N1 directly although the gain is slightly different. In these cases with the 6DJ8 or 12AX7's and 12AU7's ( with adapters ), it's all subjective as is the case with all tube rolling. To each his own although we have tried many combinations with excellent tubes and brands and have both felt that the "EV' or "EB" series 6N1's and 6N2's have a better sound than anything else we've tried....and the prices on these is far less than on most other tubes since they can be purchased from Russian surplus dealers. Just make sure that you insist on the "EB" or "EV" suffix to the tube. They are the extended life...( greater than 5000 hours and greater than 10,000 hours in some cases ) and the ultra low floor noise level and low microphonic models. They are extremely quiet with exceptional tonal qualities. The "OTK" printed on the tube signifies the quality control "stamp of approval" signifying that they were approved for military use and are of the highest build quality and specifications. Silver plated anodes and triple mica units are the most desirable, but also a bit more costly and harder to find. ( When I say more costly...they are still far below the price of any quality 12AX7 you can purchase...less than $10 per tube in most cases and as low as $5 per tube in some cases. )
  9. Oh crap.... I thought I could flirt with Raven privately here!?
  10. This is nice....since many of my posts are off topic anyway!lol Thanks for doing this Greg!
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