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#1
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output transistors for audio?
I like to build a high end audio power amplifier.
Which transistors are considered best today? What is Mark Levinson, Krell using? A.D. |
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#2
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output transistors for audio?
Audiodesigner wrote:
I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? A.D. pnp, npn, and fet -- After being targeted with gigabytes of trash by the "SWEN" worm, I have concluded we must conceal our e-mail address. Our true address is the mirror image of what you see before the "@" symbol. It's a shame such steps are necessary. ...Charlie |
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#3
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output transistors for audio?
Audiodesigner wrote:
I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? A.D. pnp, npn, and fet -- After being targeted with gigabytes of trash by the "SWEN" worm, I have concluded we must conceal our e-mail address. Our true address is the mirror image of what you see before the "@" symbol. It's a shame such steps are necessary. ...Charlie |
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#4
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output transistors for audio?
Audiodesigner wrote:
I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? A.D. pnp, npn, and fet -- After being targeted with gigabytes of trash by the "SWEN" worm, I have concluded we must conceal our e-mail address. Our true address is the mirror image of what you see before the "@" symbol. It's a shame such steps are necessary. ...Charlie |
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#5
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output transistors for audio?
Audiodesigner wrote:
I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? A.D. pnp, npn, and fet -- After being targeted with gigabytes of trash by the "SWEN" worm, I have concluded we must conceal our e-mail address. Our true address is the mirror image of what you see before the "@" symbol. It's a shame such steps are necessary. ...Charlie |
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#6
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output transistors for audio?
On Fri, 27 Feb 2004 05:29:36 -0000, Audiodesigner
wrote: I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? Plastic: 2SA1943, 2SC5200 Tinnies MJ15024,MJ15025 M |
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#7
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output transistors for audio?
On Fri, 27 Feb 2004 05:29:36 -0000, Audiodesigner
wrote: I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? Plastic: 2SA1943, 2SC5200 Tinnies MJ15024,MJ15025 M |
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#8
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output transistors for audio?
On Fri, 27 Feb 2004 05:29:36 -0000, Audiodesigner
wrote: I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? Plastic: 2SA1943, 2SC5200 Tinnies MJ15024,MJ15025 M |
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#9
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output transistors for audio?
On Fri, 27 Feb 2004 05:29:36 -0000, Audiodesigner
wrote: I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? Plastic: 2SA1943, 2SC5200 Tinnies MJ15024,MJ15025 M |
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#10
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output transistors for audio?
leearth (mike diack) wrote:
On Fri, 27 Feb 2004 05:29:36 -0000, Audiodesigner wrote: I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? Plastic: 2SA1943, 2SC5200 Tinnies MJ15024,MJ15025 M Be careful with the 2SA1943 and the 2SC5200. A lot of them out there are fakes. See http://transfal.tripod.com/ for details. --- Ing. Remberto Gomez-Meda http://ingemeda.tripod.com/ INGE - Ingenieria Electronica. Puerto Vallarta, Jalisco, Mexico. |
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#11
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output transistors for audio?
leearth (mike diack) wrote:
On Fri, 27 Feb 2004 05:29:36 -0000, Audiodesigner wrote: I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? Plastic: 2SA1943, 2SC5200 Tinnies MJ15024,MJ15025 M Be careful with the 2SA1943 and the 2SC5200. A lot of them out there are fakes. See http://transfal.tripod.com/ for details. --- Ing. Remberto Gomez-Meda http://ingemeda.tripod.com/ INGE - Ingenieria Electronica. Puerto Vallarta, Jalisco, Mexico. |
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#12
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output transistors for audio?
leearth (mike diack) wrote:
On Fri, 27 Feb 2004 05:29:36 -0000, Audiodesigner wrote: I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? Plastic: 2SA1943, 2SC5200 Tinnies MJ15024,MJ15025 M Be careful with the 2SA1943 and the 2SC5200. A lot of them out there are fakes. See http://transfal.tripod.com/ for details. --- Ing. Remberto Gomez-Meda http://ingemeda.tripod.com/ INGE - Ingenieria Electronica. Puerto Vallarta, Jalisco, Mexico. |
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#13
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output transistors for audio?
leearth (mike diack) wrote:
On Fri, 27 Feb 2004 05:29:36 -0000, Audiodesigner wrote: I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? Plastic: 2SA1943, 2SC5200 Tinnies MJ15024,MJ15025 M Be careful with the 2SA1943 and the 2SC5200. A lot of them out there are fakes. See http://transfal.tripod.com/ for details. --- Ing. Remberto Gomez-Meda http://ingemeda.tripod.com/ INGE - Ingenieria Electronica. Puerto Vallarta, Jalisco, Mexico. |
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#14
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output transistors for audio?
How can you tell if these are fakes before buying?
And what are good driver transistors? thanks A.D. I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? Plastic: 2SA1943, 2SC5200 Tinnies MJ15024,MJ15025 M |
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#15
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output transistors for audio?
How can you tell if these are fakes before buying?
And what are good driver transistors? thanks A.D. I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? Plastic: 2SA1943, 2SC5200 Tinnies MJ15024,MJ15025 M |
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#16
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output transistors for audio?
How can you tell if these are fakes before buying?
And what are good driver transistors? thanks A.D. I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? Plastic: 2SA1943, 2SC5200 Tinnies MJ15024,MJ15025 M |
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#17
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output transistors for audio?
How can you tell if these are fakes before buying?
And what are good driver transistors? thanks A.D. I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? Plastic: 2SA1943, 2SC5200 Tinnies MJ15024,MJ15025 M |
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#18
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output transistors for audio?
"El Meda" wrote in message ... leearth (mike diack) wrote: On Fri, 27 Feb 2004 05:29:36 -0000, Audiodesigner wrote: I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? Plastic: 2SA1943, 2SC5200 Tinnies MJ15024,MJ15025 M Be careful with the 2SA1943 and the 2SC5200. A lot of them out there are fakes. See http://transfal.tripod.com/ for details. If the specs are the same, what makes them fakes? What difference would it make? |
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#19
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output transistors for audio?
"El Meda" wrote in message ... leearth (mike diack) wrote: On Fri, 27 Feb 2004 05:29:36 -0000, Audiodesigner wrote: I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? Plastic: 2SA1943, 2SC5200 Tinnies MJ15024,MJ15025 M Be careful with the 2SA1943 and the 2SC5200. A lot of them out there are fakes. See http://transfal.tripod.com/ for details. If the specs are the same, what makes them fakes? What difference would it make? |
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#20
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output transistors for audio?
"El Meda" wrote in message ... leearth (mike diack) wrote: On Fri, 27 Feb 2004 05:29:36 -0000, Audiodesigner wrote: I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? Plastic: 2SA1943, 2SC5200 Tinnies MJ15024,MJ15025 M Be careful with the 2SA1943 and the 2SC5200. A lot of them out there are fakes. See http://transfal.tripod.com/ for details. If the specs are the same, what makes them fakes? What difference would it make? |
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#21
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output transistors for audio?
"El Meda" wrote in message ... leearth (mike diack) wrote: On Fri, 27 Feb 2004 05:29:36 -0000, Audiodesigner wrote: I like to build a high end audio power amplifier. Which transistors are considered best today? What is Mark Levinson, Krell using? Plastic: 2SA1943, 2SC5200 Tinnies MJ15024,MJ15025 M Be careful with the 2SA1943 and the 2SC5200. A lot of them out there are fakes. See http://transfal.tripod.com/ for details. If the specs are the same, what makes them fakes? What difference would it make? |
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#22
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output transistors for audio?
"Karl Uppiano" wrote in
: Be careful with the 2SA1943 and the 2SC5200. A lot of them out there are fakes. See http://transfal.tripod.com/ for details. If the specs are the same, what makes them fakes? What difference would it make? The specs can't possibly be the same because the actual transistor die in most fakes is far too small to meet specs. They will pass a casual inspection but will promptly fail under full power conditions. --Damon |
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#23
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output transistors for audio?
"Karl Uppiano" wrote in
: Be careful with the 2SA1943 and the 2SC5200. A lot of them out there are fakes. See http://transfal.tripod.com/ for details. If the specs are the same, what makes them fakes? What difference would it make? The specs can't possibly be the same because the actual transistor die in most fakes is far too small to meet specs. They will pass a casual inspection but will promptly fail under full power conditions. --Damon |
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#24
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output transistors for audio?
"Karl Uppiano" wrote in
: Be careful with the 2SA1943 and the 2SC5200. A lot of them out there are fakes. See http://transfal.tripod.com/ for details. If the specs are the same, what makes them fakes? What difference would it make? The specs can't possibly be the same because the actual transistor die in most fakes is far too small to meet specs. They will pass a casual inspection but will promptly fail under full power conditions. --Damon |
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#25
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output transistors for audio?
"Karl Uppiano" wrote in
: Be careful with the 2SA1943 and the 2SC5200. A lot of them out there are fakes. See http://transfal.tripod.com/ for details. If the specs are the same, what makes them fakes? What difference would it make? The specs can't possibly be the same because the actual transistor die in most fakes is far too small to meet specs. They will pass a casual inspection but will promptly fail under full power conditions. --Damon |
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#26
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output transistors for audio?
"Karl Uppiano" wrote in message ... If the specs are the same, what makes them fakes? The fact that they are usually cheap transistors with new printing on top. What difference would it make? They blow up, usually in a *very* short time. TonyP. |
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#27
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output transistors for audio?
"Karl Uppiano" wrote in message ... If the specs are the same, what makes them fakes? The fact that they are usually cheap transistors with new printing on top. What difference would it make? They blow up, usually in a *very* short time. TonyP. |
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#28
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output transistors for audio?
"Karl Uppiano" wrote in message ... If the specs are the same, what makes them fakes? The fact that they are usually cheap transistors with new printing on top. What difference would it make? They blow up, usually in a *very* short time. TonyP. |
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#29
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output transistors for audio?
"Karl Uppiano" wrote in message ... If the specs are the same, what makes them fakes? The fact that they are usually cheap transistors with new printing on top. What difference would it make? They blow up, usually in a *very* short time. TonyP. |
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#30
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output transistors for audio?
"Karl Uppiano" wrote ...
If the specs are the same, what makes them fakes? The specs AREN'T the same. At least not at high power. What difference would it make? Cheap devices re-branded with an expensive part number. Like bleaching $1 bills and printing $100 on them. |
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#31
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output transistors for audio?
"Karl Uppiano" wrote ...
If the specs are the same, what makes them fakes? The specs AREN'T the same. At least not at high power. What difference would it make? Cheap devices re-branded with an expensive part number. Like bleaching $1 bills and printing $100 on them. |
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#32
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output transistors for audio?
"Karl Uppiano" wrote ...
If the specs are the same, what makes them fakes? The specs AREN'T the same. At least not at high power. What difference would it make? Cheap devices re-branded with an expensive part number. Like bleaching $1 bills and printing $100 on them. |
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#33
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output transistors for audio?
"Karl Uppiano" wrote ...
If the specs are the same, what makes them fakes? The specs AREN'T the same. At least not at high power. What difference would it make? Cheap devices re-branded with an expensive part number. Like bleaching $1 bills and printing $100 on them. |
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#34
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output transistors for audio?
"Richard Crowley" wrote in message ... "Karl Uppiano" wrote ... If the specs are the same, what makes them fakes? The specs AREN'T the same. At least not at high power. What difference would it make? Cheap devices re-branded with an expensive part number. Like bleaching $1 bills and printing $100 on them. That was the answer I was looking for: The specs aren't the same. Thanks. Who is selling transistors with fraudulent ratings? Let's list them here! |
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#35
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output transistors for audio?
"Richard Crowley" wrote in message ... "Karl Uppiano" wrote ... If the specs are the same, what makes them fakes? The specs AREN'T the same. At least not at high power. What difference would it make? Cheap devices re-branded with an expensive part number. Like bleaching $1 bills and printing $100 on them. That was the answer I was looking for: The specs aren't the same. Thanks. Who is selling transistors with fraudulent ratings? Let's list them here! |
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#36
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output transistors for audio?
"Richard Crowley" wrote in message ... "Karl Uppiano" wrote ... If the specs are the same, what makes them fakes? The specs AREN'T the same. At least not at high power. What difference would it make? Cheap devices re-branded with an expensive part number. Like bleaching $1 bills and printing $100 on them. That was the answer I was looking for: The specs aren't the same. Thanks. Who is selling transistors with fraudulent ratings? Let's list them here! |
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#37
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output transistors for audio?
"Richard Crowley" wrote in message ... "Karl Uppiano" wrote ... If the specs are the same, what makes them fakes? The specs AREN'T the same. At least not at high power. What difference would it make? Cheap devices re-branded with an expensive part number. Like bleaching $1 bills and printing $100 on them. That was the answer I was looking for: The specs aren't the same. Thanks. Who is selling transistors with fraudulent ratings? Let's list them here! |
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#38
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output transistors for audio?
I got fake 2SA1302's, 2SC3281's. 2SA1265's and 2SA3182's from Andrews
Electronics. The 1302 and 3281 caused me a VERY expensive re-do. I broke open the failed transistors and compared them to the original Toshiba product. Obvious fakes. Poor finish quality, and the semiconductor dies were 1/2 the size, which I suppose means 1/4 the rating, since in electronics, these things often vary to the square of voltage of current. I returned the others, but Andrews would not acknowledge they had a problem. They were in SK bags, which means Thomson sourced them from Hu-Nos-Hu in China and sold them to Andrews. By the way, the 2SA1302 and 2SC3281 have been discontinued for a long time so any "new" ones you see are probably fakes. Mark Z. -- Please reply only to Group. I regret this is necessary. Viruses and spam have rendered my regular e-mail address useless. "Karl Uppiano" wrote in message ... "Richard Crowley" wrote in message ... "Karl Uppiano" wrote ... If the specs are the same, what makes them fakes? The specs AREN'T the same. At least not at high power. What difference would it make? Cheap devices re-branded with an expensive part number. Like bleaching $1 bills and printing $100 on them. That was the answer I was looking for: The specs aren't the same. Thanks. Who is selling transistors with fraudulent ratings? Let's list them here! |
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#39
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output transistors for audio?
I got fake 2SA1302's, 2SC3281's. 2SA1265's and 2SA3182's from Andrews
Electronics. The 1302 and 3281 caused me a VERY expensive re-do. I broke open the failed transistors and compared them to the original Toshiba product. Obvious fakes. Poor finish quality, and the semiconductor dies were 1/2 the size, which I suppose means 1/4 the rating, since in electronics, these things often vary to the square of voltage of current. I returned the others, but Andrews would not acknowledge they had a problem. They were in SK bags, which means Thomson sourced them from Hu-Nos-Hu in China and sold them to Andrews. By the way, the 2SA1302 and 2SC3281 have been discontinued for a long time so any "new" ones you see are probably fakes. Mark Z. -- Please reply only to Group. I regret this is necessary. Viruses and spam have rendered my regular e-mail address useless. "Karl Uppiano" wrote in message ... "Richard Crowley" wrote in message ... "Karl Uppiano" wrote ... If the specs are the same, what makes them fakes? The specs AREN'T the same. At least not at high power. What difference would it make? Cheap devices re-branded with an expensive part number. Like bleaching $1 bills and printing $100 on them. That was the answer I was looking for: The specs aren't the same. Thanks. Who is selling transistors with fraudulent ratings? Let's list them here! |
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#40
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output transistors for audio?
I got fake 2SA1302's, 2SC3281's. 2SA1265's and 2SA3182's from Andrews
Electronics. The 1302 and 3281 caused me a VERY expensive re-do. I broke open the failed transistors and compared them to the original Toshiba product. Obvious fakes. Poor finish quality, and the semiconductor dies were 1/2 the size, which I suppose means 1/4 the rating, since in electronics, these things often vary to the square of voltage of current. I returned the others, but Andrews would not acknowledge they had a problem. They were in SK bags, which means Thomson sourced them from Hu-Nos-Hu in China and sold them to Andrews. By the way, the 2SA1302 and 2SC3281 have been discontinued for a long time so any "new" ones you see are probably fakes. Mark Z. -- Please reply only to Group. I regret this is necessary. Viruses and spam have rendered my regular e-mail address useless. "Karl Uppiano" wrote in message ... "Richard Crowley" wrote in message ... "Karl Uppiano" wrote ... If the specs are the same, what makes them fakes? The specs AREN'T the same. At least not at high power. What difference would it make? Cheap devices re-branded with an expensive part number. Like bleaching $1 bills and printing $100 on them. That was the answer I was looking for: The specs aren't the same. Thanks. Who is selling transistors with fraudulent ratings? Let's list them here! |
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