Have you ever ever pondered what was very good to get so far as vintage sound recording equipment was concerned? It could possibly be baffling. Just after all, there's a ton of it in existence, primarily utilized, and it can be tough to uncover gear that you just can depend on and believe in. Nevertheless, there are some points to search for, and thinking about a few fundamental items can actually help you decide on the proper gear and avoid obtaining scammed on gear that just isn't superb, or in superb situation.
McIntosh Tube Amplifier Auctions
 McIntosh MC-30 Mono Tube Amp Ad,1955,2 pgs,specs, RARE!  US $8.00
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 MCINTOSH MC225 TUBE AMP AMPLIFIER STEREO US $1,599.00
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 McINTOSH MC 240 TUBE AMPLIFIER w/ORIGINAL TUBES US $1,010.00
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 McIntosh Ad, 1956, MC-60 Tube Amp, C-8 Preamp, Article US $9.99
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 McIntosh MC 275 Reissue Tube Amp Review,6 pages US $7.99
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 McIntosh MC-240 Tube Amplifier Review, 1961, 2 pgs US $13.00
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Recall that you will find a few big things to search for as far as audio devices, and all those are range, electricity, and distortion. Vintage audio equipment is famous for its dynamic collection, superior electrical power, and lack of distortion. The truth is, many people believe that which the worst distortion takes place in digital sort on the CD. It is because vinyl and mediums like it cover the flaws inside of a spherical about way covering these with richness and fullness of tone rather of uncooked digital edgy chaos.
McIntosh Tube Amplifier Videos
1.87 min. | 5.0 user rating
Here is a beautiful pair of classic Mcintosh Mc40 mono amplifiers with the magical Mac C20 pre amplifier. Enjoy the classic sound and leave a comment! The premier audio equipment company, McIntosh was built for true audiophiles who want only the best and can hear the "pin drop" difference...
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McIntosh Tube Amplifier question of the day
Question How To Build An Amplifier?
Alright, so I have been off the forums (diyma, 12volt, etc) for quite some time now. I am very knowledgeable W/ "mobile audio" & I am a total noob W/ certain things. I can tell you all about characteristics of various cone materials, tweeter composition, slopes, crossover points, & even a bit of pyscho acoustics (diffraction & reflection). However, I still do not know how to build an amplifier! I have a very basic understanding of FETS, transistors, Caps, Resistors, etc. However, I am up for the challenge. I understand there are several types of amplifiers. This will not be a "tube" amplifier. It will be a "mobile audio" amplifier. Now I know those of you who are knowledgeable W/ audio are going to be laughing at me cuz people do make tube amplifiers that run off DC power. -Take a look at McIntosh. Anyways, so the amplifier I will be fabricating will be ran off of DC Power. Now there are several types of amplifiers right? Class D, A, A/b, G-H, etc. So what type? Well, this amplifier will run a set of Mids for now (I will explain crossover below) so I take it I will be using A/B (for whatever reason?). Class D seems more geared towards "subwoofers." Class G-H is beyond me. I believe ARC & Vibe uses this "new" idea or whatever you want to call it & class A amplifiers are not efficient at all. Watts. I take it this will be my next quesiton? My speakers rate 25 watts. yes, RMS so I figure 30-40 watts RMS should be a good target/goal. They run at 8 ohms, yes they are "raw drivers." -Now this is beyond me & I am not sure how this plays a role. Okay, so here is a few other things I know: Most amplifiers, if not all are built off PCB boards, correct? I know there's a lot of youtube tutorials on how to etch your own & I'd be up for it. I have a few starter breadboards that I could play around with. Cooling: LOL, I assume I will be running fans. Now how does this work? I took a look at a few of my amplifiers and it appears as the FETS run off the heatsink. Are the FETS the only things that gets hot? Oh, my active crossovers will be done at the Source so all I need out of this amplifier is raw power. An amplifier is just a voltage booster right? Gain: Okay, I understand the gain is there to match the signal output from the source to the amplifier right. So what if I know the exact voltage coming from my source, than can do I even need a "variable" gain adjuster? Ha, so I know a bit here & there, but if someone could sum it up for me that'd be great!
Best Answer No Best Answer Yet
Alright, so I have been off the forums (diyma, 12volt, etc) for quite some time now. I am very knowledgeable W/ "mobile audio" & I am a total noob W/ certain things. I can tell you all about characteristics of various cone materials, tweeter composition, slopes, crossover points, & even a bit of pyscho acoustics (diffraction & reflection). However, I still do not know how to build an amplifier! I have a very basic understanding of FETS, transistors, Caps, Resistors, etc. However, I am up for the challenge. I understand there are several types of amplifiers. This will not be a "tube" amplifier. It will be a "mobile audio" amplifier. Now I know those of you who are knowledgeable W/ audio are going to be laughing at me cuz people do make tube amplifiers that run off DC power. -Take a look at McIntosh. Anyways, so the amplifier I will be fabricating will be ran off of DC Power. Now there are several types of amplifiers right? Class D, A, A/b, G-H, etc. So what type? Well, this amplifier will run a set of Mids for now (I will explain crossover below) so I take it I will be using A/B (for whatever reason?). Class D seems more geared towards "subwoofers." Class G-H is beyond me. I believe ARC & Vibe uses this "new" idea or whatever you want to call it & class A amplifiers are not efficient at all. Watts. I take it this will be my next quesiton? My speakers rate 25 watts. yes, RMS so I figure 30-40 watts RMS should be a good target/goal. They run at 8 ohms, yes they are "raw drivers." -Now this is beyond me & I am not sure how this plays a role. Okay, so here is a few other things I know: Most amplifiers, if not all are built off PCB boards, correct? I know there's a lot of youtube tutorials on how to etch your own & I'd be up for it. I have a few starter breadboards that I could play around with. Cooling: LOL, I assume I will be running fans. Now how does this work? I took a look at a few of my amplifiers and it appears as the FETS run off the heatsink. Are the FETS the only things that gets hot? Oh, my active crossovers will be done at the Source so all I need out of this amplifier is raw power. An amplifier is just a voltage booster right? Gain: Okay, I understand the gain is there to match the signal output from the source to the amplifier right. So what if I know the exact voltage coming from my source, than can do I even need a "variable" gain adjuster? Ha, so I know a bit here & there, but if someone could sum it up for me that'd be great!
Best Answer No Best Answer Yet
Question How to build an amplifier?
Alright, so I have been off the forums (diyma, 12volt, etc) for quite some time now. I am very knowledgeable W/ "mobile audio" & I am a total noob W/ certain things. I can tell you all about characteristics of various cone materials, tweeter composition, slopes, crossover points, & even a bit of pyscho acoustics (diffraction & reflection). However, I still do not know how to build an amplifier! I have a very basic understanding of FETS, transistors, Caps, Resistors, etc. However, I am up for the challenge. I understand there are several types of amplifiers. This will not be a "tube" amplifier. It will be a "mobile audio" amplifier. Now I know those of you who are knowledgeable W/ audio are going to be laughing at me cuz people do make tube amplifiers that run off DC power. -Take a look at McIntosh. Anyways, so the amplifier I will be fabricating will be ran off of DC Power. Now there are several types of amplifiers right? Class D, A, A/b, G-H, etc. So what type? Well, this amplifier will run a set of Mids for now (I will explain crossover below) so I take it I will be using A/B (for whatever reason?). Class D seems more geared towards "subwoofers." Class G-H is beyond me. I believe ARC & Vibe uses this "new" idea or whatever you want to call it & class A amplifiers are not efficient at all. Watts. I take it this will be my next quesiton? My speakers rate 25 watts. yes, RMS so I figure 30-40 watts RMS should be a good target/goal. They run at 8 ohms, yes they are "raw drivers." -Now this is beyond me & I am not sure how this plays a role. Okay, so here is a few other things I know: Most amplifiers, if not all are built off PCB boards, correct? I know there's a lot of youtube tutorials on how to etch your own & I'd be up for it. I have a few starter breadboards that I could play around with. Cooling: LOL, I assume I will be running fans. Now how does this work? I took a look at a few of my amplifiers and it appears as the FETS run off the heatsink. Are the FETS the only things that gets hot? Oh, my active crossovers will be done at the Source so all I need out of this amplifier is raw power. An amplifier is just a voltage booster right? Gain: Okay, I understand the gain is there to match the signal output from the source to the amplifier right. So what if I know the exact voltage coming from my source, than can do I even need a "variable" gain adjuster? Ha, so I know a bit here & there, but if someone could sum it up for me that'd be great!
Best Answer You definitely want Douglas Self's 5th edition of "Audio Power Amplifier Design Handbook." First link below. You may also want to read some comments about the book (55 pages of them) from another link (second link below.) There is hardly anything better as one very good, comprehensive, and very systematic design volume. Packed with practical information, too. For the very basics, you need to understand how a differential BJT pair works, what a current mirror is and how to design with them (widlar and wilson, at least), how a VAS works and what role it plays between the input stage and the output stage, how to design a Vbe multiplier and why a collector resistor can improve its performance (and what function it serves just before the output stage), various types of output stages and modes of operation (A, A/B, B, at least) and how to move operation from one to another, power supply design, and some knowledge about negative feedback (global and local.) FETs aren't spec'd for linear operation. At least, none I've seen. In the linear region, they just don't write much specification text. They are used, of course, for the "above class C" modes. But you need to walk before you run. So start with BJTs. Read Doug's book. You don't have to understand all of it to do something good. But it sure helps to have that book handy as you think about things and move forward. Worth each cent you will spend. I'd definitely recommend starting small, too. Like something on the order of 1 or 2 watts. Or less, even. Just to get the ideas down with something cheap to replace when you burn them up. If you don't have an oscilloscope around, I'd seriously think about it. They are so darned cheap these days. Rigol is officially selling their 2-ch, 100MHz scope for under 0, last I checked. (Last link.) And a voltmeter, obviously. Finally, I added Bob Cordell's book, as well. Worth getting as well. 4th link below. I also haven't seen or read Self's other book on small signal audio design, but am including a link to it (5th link.)
Alright, so I have been off the forums (diyma, 12volt, etc) for quite some time now. I am very knowledgeable W/ "mobile audio" & I am a total noob W/ certain things. I can tell you all about characteristics of various cone materials, tweeter composition, slopes, crossover points, & even a bit of pyscho acoustics (diffraction & reflection). However, I still do not know how to build an amplifier! I have a very basic understanding of FETS, transistors, Caps, Resistors, etc. However, I am up for the challenge. I understand there are several types of amplifiers. This will not be a "tube" amplifier. It will be a "mobile audio" amplifier. Now I know those of you who are knowledgeable W/ audio are going to be laughing at me cuz people do make tube amplifiers that run off DC power. -Take a look at McIntosh. Anyways, so the amplifier I will be fabricating will be ran off of DC Power. Now there are several types of amplifiers right? Class D, A, A/b, G-H, etc. So what type? Well, this amplifier will run a set of Mids for now (I will explain crossover below) so I take it I will be using A/B (for whatever reason?). Class D seems more geared towards "subwoofers." Class G-H is beyond me. I believe ARC & Vibe uses this "new" idea or whatever you want to call it & class A amplifiers are not efficient at all. Watts. I take it this will be my next quesiton? My speakers rate 25 watts. yes, RMS so I figure 30-40 watts RMS should be a good target/goal. They run at 8 ohms, yes they are "raw drivers." -Now this is beyond me & I am not sure how this plays a role. Okay, so here is a few other things I know: Most amplifiers, if not all are built off PCB boards, correct? I know there's a lot of youtube tutorials on how to etch your own & I'd be up for it. I have a few starter breadboards that I could play around with. Cooling: LOL, I assume I will be running fans. Now how does this work? I took a look at a few of my amplifiers and it appears as the FETS run off the heatsink. Are the FETS the only things that gets hot? Oh, my active crossovers will be done at the Source so all I need out of this amplifier is raw power. An amplifier is just a voltage booster right? Gain: Okay, I understand the gain is there to match the signal output from the source to the amplifier right. So what if I know the exact voltage coming from my source, than can do I even need a "variable" gain adjuster? Ha, so I know a bit here & there, but if someone could sum it up for me that'd be great!
Best Answer You definitely want Douglas Self's 5th edition of "Audio Power Amplifier Design Handbook." First link below. You may also want to read some comments about the book (55 pages of them) from another link (second link below.) There is hardly anything better as one very good, comprehensive, and very systematic design volume. Packed with practical information, too. For the very basics, you need to understand how a differential BJT pair works, what a current mirror is and how to design with them (widlar and wilson, at least), how a VAS works and what role it plays between the input stage and the output stage, how to design a Vbe multiplier and why a collector resistor can improve its performance (and what function it serves just before the output stage), various types of output stages and modes of operation (A, A/B, B, at least) and how to move operation from one to another, power supply design, and some knowledge about negative feedback (global and local.) FETs aren't spec'd for linear operation. At least, none I've seen. In the linear region, they just don't write much specification text. They are used, of course, for the "above class C" modes. But you need to walk before you run. So start with BJTs. Read Doug's book. You don't have to understand all of it to do something good. But it sure helps to have that book handy as you think about things and move forward. Worth each cent you will spend. I'd definitely recommend starting small, too. Like something on the order of 1 or 2 watts. Or less, even. Just to get the ideas down with something cheap to replace when you burn them up. If you don't have an oscilloscope around, I'd seriously think about it. They are so darned cheap these days. Rigol is officially selling their 2-ch, 100MHz scope for under 0, last I checked. (Last link.) And a voltmeter, obviously. Finally, I added Bob Cordell's book, as well. Worth getting as well. 4th link below. I also haven't seen or read Self's other book on small signal audio design, but am including a link to it (5th link.)