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Batch #4 parts just arrived
Can someone shed some light on the ALPS RK50 used in the BHSE?
Does the RK50 use a ladder of SMD resisters vs. a conventional pot that drags contacts across a wire/membrane surface? If the RK50 uses a resister ladder, is the adjustment perceived to be fully linear? I can't tell from the specs on ALPS' Web site.
Than
What is the output impedance of the BHSE (and also, to compare, that of the SRM 727) ?
Eric
Hello Kevin,
What is the output impedance of the BHSE (and also, to compare, that of the SRM 727) ?
For information, the internal resistance (output impedance) of the RKV-II would be of the order of 0.05 Ohm: 200 Ohm (load) / 3600 (damping factor at 200 Ohm)
WOW, we are up to .05 ohms. Also a complete fabrication.
http://www.krellonline.com/downloads/Evolution_Brochure.pdf
so you are telling me that the rkv-ii has the same impedance as a krell 402.
Really, is that so. Not even for the first microwatt. What mighty tubes
a pair of pcl805 must be. way stronger than 6c33.
The output impedance of the BHSE is 5.1k ohms on each side. For safety purposes
so that the diaphrams don't get destroyed. Same as srm313,srm323,srm717,srm727,
sr006t,sr007t,srm-t1,srm-t2 etc. If the Verto does not have these safety
resistors, it will definitely damage the headphones.
The 2 minute or more charge time on the verto is also real bad. That means that
the headphones don't have any bias for 2 minutes while the music is playing.
Very bad for the charge layer on the diaphragm. Koss learned this 40 years ago
with the esp6.
Just wait 2 minutes, the potentiometer of the RKV to zero, before listening to music.
Really, I do not see where is the problem.
If there is no music, then there is no AC voltage required to build the bias voltage.