amandarae

Responses from amandarae

Do you leave CD players with tube outputs on?
Most small signal tubes that are used in audio components, such as the 12AX7's and 6SN7's, use indirectly heated cathodes (meaning that filament and cathode are different elements). The filaments in some designs are powered with low voltage ac sup... 
Subs for the 5z4 tube?
Check tube bias after any rectifier swap.A different rectifier can be higher or lower voltage, and affect bias. John C.Great post! That's why each rectifier seems to have each own signature on the overall sound. It is not because it is NOS/Blackpl... 
Tired of Problems with Tube Equipment
Then DIY is for you!You can build amps from proven designs with better parts and built than many commercial models at a percentage of what you might pay for a commercial one. Besides, when something happens to your amp, you will have at least a ge... 
Preamp Deal of the Century
Can anybody tell me if I could use a 5u4g in the rectifer postion, emailed Mick haven't gotten a reply yet. Want to try the EML 5U4G mesh plate, looks like a very nice new production tube. Anybody try them? Snopro,Before you can use a 5U4G, you sh... 
Vpi aries with Benz L-2 cartridge
It's the table and it's inherent design. You can buy any cartridge you can afford and might sound good on your VPI, try it on a Lenco and it will sound better. Had a direct access to my friend's VPI Superscoutmaster for 3 months. He never like the... 
Preamp Deal of the Century
Hello Kgturner,Me. I have not use my Chenin for almost 8 months now. Just sitting here, in saran wrap. You can see the preamp I am using in my system page.regardsAbe 
The Room, not us, determines our speaker choices
May I ask about what speakers are you talking about?Can you post your system here? Anything visual can make your post much more effective in conveying your message don't you think?regards,Abe 
Subsonic Rumble Solutions
How far is your speakers to the TT? Your rack, floor if suspended, is moving. Have you tried moving the sub further away from the shelf supporting the tt?I had the Trumpet. What you described was one of the main reason why I sold it since I have a... 
Ground Loop Issue 427
Hello Jim,I understand what you meant and I am having a hard time to explain it and maybe I am getting confuse as well but I was talking about signal ground not PSU ground. Don't know how to elaborate it any further really since it is easier for m... 
Ground Loop Issue 427
Hello Spencer,Yes, I believe you that the preamp works on the other two amps. But the thing is, what is the input sensitivity of the two amps compared to the 845? It is possible that the ground loop is there already but not audible with the two am... 
Ground Loop Issue 427
Hello Spencer,I see. On normal usage, is the charger connected directly to the preamp all the time or you have to disconnect after charging?If it is the latter, then it should be quiet because it uses the main amp ground, through the negative pins... 
Help me out... can't figure this out
Just a thought, what is the setting of the two front L&R speakers on the processor end if any? Is it "Large" or "Small" ( please consult your manual)? Have you tried configuring the settings from the processor? Is there a "direct" settings (2 ... 
Ground Loop Issue 427
Hello,When you connect the shielded cable, is the cable shield connected on both ends? Have you tried shielded cables where the shield is only connected at the amp side? preamp side?I think that what you are experiencing is common to SET amp where... 
name that tube
A 10-watt tube in SE class A has . . . what, 250-300v on the plate at 35-30mA? So changing the B+ by 35v will change the plate dissapation on the output tube by about 1-1/2 watts . . . differences in transconductance across various 45s will cause ... 
name that tube
Hmmm, pardon me but IMHO,NOT ALWAYS THE CASE! It depends on the design of the circuit. In preamps, maybe but in amps not always. For example, you have a 45 SET amp whose output tube Power Dissipation (Pd) is operating at 10 Watts maximum rating (a...