Corvette

PaulPeter · 2nd March 2013, 10:46 PM

Corvette

Fast Eddie D · 3rd March 2013, 01:09 AM

Schematic?

PaulPeter · 3rd March 2013, 05:15 AM

http://www.radiocraft.ca/Products/Am...0Schematic.pdf

Fast Eddie D · 3rd March 2013, 01:36 PM

Can it drive low-Z cans?

PaulPeter · 3rd March 2013, 01:44 PM

Was tested as low as 30 Ohm of impedance.

Fast Eddie D · 3rd March 2013, 03:07 PM

I've seen these cathode follower circuits before. I wonder if they work as well as solid state for low Z.

I heard about a "high end"

power amp that used parallel cathode followers in the output. It sounds intriguing, but I think you would have to use a lot of tubes. I wonder if it's really that much better than transformer coupled. I bet it makes great tube porn though

PaulPeter · 3rd March 2013, 03:19 PM

Scroll down to the Youtube video and go straight to 5:36 where the amplifier is tested to judge how power it is.

RADIOCRAFT® TECHNOLOGIES 6922 TUBE HEADPHONE AMPLIFIER KIT CORVETTE

Also, I posted a photo of amplifier Frigate which additionally has 6H30Pi per channel (which alleviates your worries about output power), but moderators did not publish the photo.

Fast Eddie D · 3rd March 2013, 05:28 PM

Very nice. 50 mW @ 30 ohms is a little shy compared to solid state amps but adequate. I like it.

Mooly · 3rd March 2013, 06:15 PM

Thread moved to Vendors Bazaar

PaulPeter · 3rd March 2013, 08:05 PM

Yes, it has some power headroom tanks to the high DC voltage.

2nd March 2013, 10:46 PM	#1
PaulPeter diyAudio Member Join Date: Mar 2013	Corvette Corvette

3rd March 2013, 06:15 PM	#9
Mooly diyAudio Moderator Join Date: Sep 2007	Thread moved to Vendors Bazaar __________________ ------------------------------------------------------- *A simulation free zone.* *Design it, build it, test it.*

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3rd March 2013, 01:09 AM	#2
Fast Eddie D diyAudio Member Join Date: May 2010 Location: Skokie Il	Schematic?

3rd March 2013, 05:15 AM	#3
PaulPeter diyAudio Member Join Date: Mar 2013	http://www.radiocraft.ca/Products/Am...0Schematic.pdf

3rd March 2013, 01:36 PM	#4
Fast Eddie D diyAudio Member Join Date: May 2010 Location: Skokie Il	Can it drive low-Z cans?

3rd March 2013, 01:44 PM	#5
PaulPeter diyAudio Member Join Date: Mar 2013	Was tested as low as 30 Ohm of impedance.

3rd March 2013, 03:07 PM	#6
Fast Eddie D diyAudio Member Join Date: May 2010 Location: Skokie Il	I've seen these cathode follower circuits before. I wonder if they work as well as solid state for low Z. I heard about a "high end" power amp that used parallel cathode followers in the output. It sounds intriguing, but I think you would have to use a lot of tubes. I wonder if it's really that much better than transformer coupled. I bet it makes great tube porn though

3rd March 2013, 03:19 PM	#7
PaulPeter diyAudio Member Join Date: Mar 2013	Scroll down to the Youtube video and go straight to 5:36 where the amplifier is tested to judge how power it is. RADIOCRAFT® TECHNOLOGIES 6922 TUBE HEADPHONE AMPLIFIER KIT CORVETTE Also, I posted a photo of amplifier Frigate which additionally has 6H30Pi per channel (which alleviates your worries about output power), but moderators did not publish the photo.

3rd March 2013, 05:28 PM	#8
Fast Eddie D diyAudio Member Join Date: May 2010 Location: Skokie Il	Very nice. 50 mW @ 30 ohms is a little shy compared to solid state amps but adequate. I like it.

3rd March 2013, 08:05 PM	#10
PaulPeter diyAudio Member Join Date: Mar 2013	Yes, it has some power headroom tanks to the high DC voltage.