Good evening everyone,
I apologize for some of the bonehead threads I have asked about things like ‘Using just 12AU7s for a Phono Stage’ and ‘3-12AU7 Preamp’. I just don’t know that much about the working of tubes to know how crazy I sound.
I also tend to ask very vague questions which causes more issues than it fixes, so I am going to try to be careful and ask advice for a pre-amp with giving more of a background in hopes that it will cause less frustration to the members offering their assistance.
I am looking to build a pre-amp that is used for home listening that will match my system well now and possibly with other amp builds in the future.
Here is my system at this time
Krell - KAV 400xi – Integrated Amp – 250W – Using the Pre-out only
Apple TV – Digital Music Source – Files are Apple lossless compression
POS – Turntable and Phono stage – DIY turntable and Phono stage to be built at a later date
Martian Logan – Aeon – Electrostatic Speaker
DIY Sub – Martian Logan Drivers and Rythmik 600w non servo amp
6SL7GT (JAN-Sylvania)/ 6V6S (JJ) PP Amp – [6V6G Marconi to replace the 6V6s JJ just arrived today]
I have the following tubes at this time. If none of these will work, I will just save them for a later build.
3 – RFT – ECC82
4 – RCA – 12AU7 Clear Top
4 – Siemens – C3G and C3M
2 – Tung-Sol 6SL7GT
I also have a lot that was bought for $20 off EBay. I figure take a chance for the $20 and hope for the best. I think I have some that may work.
For the power supply, I had already purchased an Antek 200v Toroidal – 2 x 200v / 100va outputs and 2 x 6.3 / 3A outputs. I had also built the PSU for Bruce’s Forewatt Preamp. I can change the resistors as needed to raise or lower the voltage depending on the pre-amp design chosen.
Under louder listening conditions (Turn it up and work around the house), The volume of the Krell is around 60/70 out of 120 (just over midway). This holds true using just the Krell alone or along with the Tube amp.
I don’t believe that I need much gain at all, but I don’t want to just use an attenuator (no fun to build).
Does anyone have any good ideas of a circuit that is not overly complex that will yield good results? Please keep in mind that I am a Greenhorn, so some of the questions you ask may not sink in at first. I am not trying to ride coat tails from someone’s hard design work, I just love the build and do not have experience in circuit design.
Also I am attaching a schematic of the amp so you will know how it is build. Heck, maybe there will even be room for improvement on that.
Thanks for you time and patience.
Cheers
Brian
I apologize for some of the bonehead threads I have asked about things like ‘Using just 12AU7s for a Phono Stage’ and ‘3-12AU7 Preamp’. I just don’t know that much about the working of tubes to know how crazy I sound.
I also tend to ask very vague questions which causes more issues than it fixes, so I am going to try to be careful and ask advice for a pre-amp with giving more of a background in hopes that it will cause less frustration to the members offering their assistance.
I am looking to build a pre-amp that is used for home listening that will match my system well now and possibly with other amp builds in the future.
Here is my system at this time
Krell - KAV 400xi – Integrated Amp – 250W – Using the Pre-out only
Apple TV – Digital Music Source – Files are Apple lossless compression
POS – Turntable and Phono stage – DIY turntable and Phono stage to be built at a later date
Martian Logan – Aeon – Electrostatic Speaker
DIY Sub – Martian Logan Drivers and Rythmik 600w non servo amp
6SL7GT (JAN-Sylvania)/ 6V6S (JJ) PP Amp – [6V6G Marconi to replace the 6V6s JJ just arrived today]
I have the following tubes at this time. If none of these will work, I will just save them for a later build.
3 – RFT – ECC82
4 – RCA – 12AU7 Clear Top
4 – Siemens – C3G and C3M
2 – Tung-Sol 6SL7GT
I also have a lot that was bought for $20 off EBay. I figure take a chance for the $20 and hope for the best. I think I have some that may work.
For the power supply, I had already purchased an Antek 200v Toroidal – 2 x 200v / 100va outputs and 2 x 6.3 / 3A outputs. I had also built the PSU for Bruce’s Forewatt Preamp. I can change the resistors as needed to raise or lower the voltage depending on the pre-amp design chosen.
Under louder listening conditions (Turn it up and work around the house), The volume of the Krell is around 60/70 out of 120 (just over midway). This holds true using just the Krell alone or along with the Tube amp.
I don’t believe that I need much gain at all, but I don’t want to just use an attenuator (no fun to build).
Does anyone have any good ideas of a circuit that is not overly complex that will yield good results? Please keep in mind that I am a Greenhorn, so some of the questions you ask may not sink in at first. I am not trying to ride coat tails from someone’s hard design work, I just love the build and do not have experience in circuit design.
Also I am attaching a schematic of the amp so you will know how it is build. Heck, maybe there will even be room for improvement on that.
Thanks for you time and patience.
Cheers
Brian