Good CD / SACD / DVD-A Player
While you can still find them on eBay, pick up a Pioneer Elite DV-58AV. It plays everything except Blu-Ray, uses excellent Burr-Brown DAC's and even outputs DSD data via it's HDMI 1.3 port. You won't find a better buy, (around $300-400), and it sounds fabulous......puts a lot of the more expensive stuff to shame. It's no slouch with DVD-V's either !!
A GREAT vintage player is the Pioneer Elite PD-65 stable platter, but they are getting increasingly hard to find.
While you can still find them on eBay, pick up a Pioneer Elite DV-58AV. It plays everything except Blu-Ray, uses excellent Burr-Brown DAC's and even outputs DSD data via it's HDMI 1.3 port. You won't find a better buy, (around $300-400), and it sounds fabulous......puts a lot of the more expensive stuff to shame. It's no slouch with DVD-V's either !!
A GREAT vintage player is the Pioneer Elite PD-65 stable platter, but they are getting increasingly hard to find.
Re: Adding Fans to F5
Run the motor off that DC supply. Don't connect it in any way to the audio side. If the 6Vac is too slow then try 7Vac, if still too slow add another 1Vac winding and try 8Vac.
wind a 6Vac and a 1Vac secondary onto to your toroid using 0.5mm or 0.6mm diameter wire. Rectify it and smooth it.steveleen said:
Run the motor off that DC supply. Don't connect it in any way to the audio side. If the 6Vac is too slow then try 7Vac, if still too slow add another 1Vac winding and try 8Vac.
Depends on how ear-shattering your playback levels are planed to be!
As Paul W. Klipsch once said "What the world needs is a good 5 W amplifier". Or was it 2 W?
Anyway, my point is that the 85 dBs are with 1 W, and 2 W gives you 88 db SPL and so on, as you probably know.
So maybe the F5 is enough?
As Paul W. Klipsch once said "What the world needs is a good 5 W amplifier". Or was it 2 W?
Anyway, my point is that the 85 dBs are with 1 W, and 2 W gives you 88 db SPL and so on, as you probably know.
So maybe the F5 is enough?
ccschua said:
I drive 84dB/ 8ohm, which is well known as power hungry, with B1 buffer (0dB-gain) and F5. I have also tried with my tube pre (with gain) and F5, and found very loud sound.
At present, I drive four of the above speakers (two paralled to 4ohms each channel) with single set of B1/F5.
Not in the public hall . . . but at my living room . . .
Just for your info . . .
stein2 said:
Impedance curve of Dynaudio Focus 140 speakers (in attachment) shows that it will give hard time to Aleph 5 which can deliver only 30W at 4 Ohms. On the other hand F5 will happily deliver 10 A (peak) even in to 2 Ohms load. So, more MOSFETs and more heat doesn't always mean more power...
Attachments
Powering F5 fans
Thank you, Andrew, for the reminder of something I already knew: don’t do anything that would contaminate the signal!
I thought about some other fan power supply options and, while looking in the junk box, came across several old Nokia phone chargers (wall wart style). I checked the specs, then I tested these off of line AC. I connected the DC-outs in series and then connected the two fans paralleled across the resulting DC voltage. One charger doesn’t even move the fans. Three chargers gives very good speed, but too much fan noise. Two chargers in series works just right, producing a moderate amount of air flow with virtually no sound. The modules, after removal from their wall wart cases, are small and they will be easy to mount in a corner of the amp case, fed by the incoming line AC. I will report later on the perceived (via touch test) effect on heatsink temp.
Uriah – will send pics once everything completed.
Steve
Thank you, Andrew, for the reminder of something I already knew: don’t do anything that would contaminate the signal!
I thought about some other fan power supply options and, while looking in the junk box, came across several old Nokia phone chargers (wall wart style). I checked the specs, then I tested these off of line AC. I connected the DC-outs in series and then connected the two fans paralleled across the resulting DC voltage. One charger doesn’t even move the fans. Three chargers gives very good speed, but too much fan noise. Two chargers in series works just right, producing a moderate amount of air flow with virtually no sound. The modules, after removal from their wall wart cases, are small and they will be easy to mount in a corner of the amp case, fed by the incoming line AC. I will report later on the perceived (via touch test) effect on heatsink temp.
Uriah – will send pics once everything completed.
Steve
Somewhere in the mini-aleph thread theres a lovely little fan speed controller from Nelson. Gives a shot of current on startup to allow the fan to start reliably but also allows you to turn teh voltage right down and give very quiet operation. I used it in my minialeph. I'm sure I can dig out the schematic (which is very simple) if you are going with fans.
Fran
Fran
