from: http://cgi.ebay.com/O-S-Soundstream...ryZ18795QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
"The Pure A Class 100 IIs are a Nelson Pass design. I have a friend that is good buds with Nelson, and the 100 IIs Pure A Class are his."
Can anyone here confirm?
I am presently using a Soundstream D 200 II (class AB) in my vehicle and believe it to by one of the most musically capable production amplifiers for automotive use that I have ever listened through.
"The Pure A Class 100 IIs are a Nelson Pass design. I have a friend that is good buds with Nelson, and the 100 IIs Pure A Class are his."
Can anyone here confirm?
I am presently using a Soundstream D 200 II (class AB) in my vehicle and believe it to by one of the most musically capable production amplifiers for automotive use that I have ever listened through.
I did design some stuff for Soundstream as part of my contract with
Nakamichi, but this appears to be later product. I don't know
what's in it or what similarities to the original prototype products
there might be.
😎
Nakamichi, but this appears to be later product. I don't know
what's in it or what similarities to the original prototype products
there might be.
😎
Thanks Mr. Pass,
Which products did you design/prototype? Are their schematics available to DIY? I am guessing the Class A 100 II amp to be from aprox early - mid 1990’s production (built in USA).
If anyone has heard production car audio amplifiers that they believe to be more musically capable (than these older stateside built SoundStream) I’d like to know of those amps.
Which products did you design/prototype? Are their schematics available to DIY? I am guessing the Class A 100 II amp to be from aprox early - mid 1990’s production (built in USA).
If anyone has heard production car audio amplifiers that they believe to be more musically capable (than these older stateside built SoundStream) I’d like to know of those amps.
I thought that the U.S. built Adcom auto-sound amps were
terrific, largely based on the Mosfets circuits I did for Adcom
in the early 90's.
😎
terrific, largely based on the Mosfets circuits I did for Adcom
in the early 90's.
😎
Hi!
That Amp never be in ClassA.
http://ampguts.realmofexcursion.com/Soundstream_Class_A_100II/
Very small Heatsinsks!
Look @ Aleph A3 or A5, diferent is large.
Those Amps are real A Class.
Regards zeoN_Rider
That Amp never be in ClassA.
http://ampguts.realmofexcursion.com/Soundstream_Class_A_100II/
Very small Heatsinsks!
Look @ Aleph A3 or A5, diferent is large.
Those Amps are real A Class.
Regards zeoN_Rider
which Adcom amps? Did you ever ABAB them to your SoundStream work?
This one? http://cgi.ebay.com/RARE-ADCOM-4702...9fed9aa8b&_trksid=p3286.c0.m14&_trkparms=65:1|66%3A2|39%3A1|240%3A1308|301%3A1|293%3A1|294%3A50
This one? http://cgi.ebay.com/RARE-ADCOM-4702...9fed9aa8b&_trksid=p3286.c0.m14&_trkparms=65:1|66%3A2|39%3A1|240%3A1308|301%3A1|293%3A1|294%3A50
The Original D series not the Series II I am pretty sure are based on Nelsons Designs.
A long long long time ago I spoke with a guy that told me the whole story. Or at least the story as he knew it. I'm not sure if I can tell it or not? If N.P. ok's it I will type up the story as i heard it.
The Original D-200 had separate power supplies for each channel. the later models only had one supply and the board was revamped. close to the same circuit however. Still the original D series sounds better. These and the Linear Power are still my all time fav car amps.
I have been wanting to play with the Adcoms but they are still very expensive used. Adcom was the first, or one of the first to do balanced outs from the head unit to the amp. a perfectly logical thing to do in a car, and yet it never quite caught on.
A long long long time ago I spoke with a guy that told me the whole story. Or at least the story as he knew it. I'm not sure if I can tell it or not? If N.P. ok's it I will type up the story as i heard it.
The Original D-200 had separate power supplies for each channel. the later models only had one supply and the board was revamped. close to the same circuit however. Still the original D series sounds better. These and the Linear Power are still my all time fav car amps.
I have been wanting to play with the Adcoms but they are still very expensive used. Adcom was the first, or one of the first to do balanced outs from the head unit to the amp. a perfectly logical thing to do in a car, and yet it never quite caught on.
multi kW amps, running off a 13.8V supply, in a very few cubic metres of auditorium tells even more of the stupidity that entered the auto-sound marketing strategy.
Soundstream D100 / D100II
My NAME IS Wade Stewart, I was Soundstreams design engineer from about 1981 to 1997. Nelson Pass designed the original D100, D50, Class A 100 and Class A 50. I copied Nelsons designs in the II series, the peolple at Soundstream did not want me to change anything so all I did was put Nelsons design on one PC board and fix a thermal runaway problem some of the first amps had, after that they let me pretty much do what I wanted, most of which were based in some way on Nelsons original designs
Thanks, Nelson
Wade Stewart
My NAME IS Wade Stewart, I was Soundstreams design engineer from about 1981 to 1997. Nelson Pass designed the original D100, D50, Class A 100 and Class A 50. I copied Nelsons designs in the II series, the peolple at Soundstream did not want me to change anything so all I did was put Nelsons design on one PC board and fix a thermal runaway problem some of the first amps had, after that they let me pretty much do what I wanted, most of which were based in some way on Nelsons original designs
Thanks, Nelson
Wade Stewart
I had 3 of the Adcoms... though I didn't know Nelson designed them back then.
I found them to be the most musical of the offerings back then and the styling was way ahead of the competition also.
Perhaps it was just too much of a good thing.
Knowing they were your designs, I would have kept them but they went with the vehicles (and the boat) at trade in.
I found them to be the most musical of the offerings back then and the styling was way ahead of the competition also.
Perhaps it was just too much of a good thing.
Knowing they were your designs, I would have kept them but they went with the vehicles (and the boat) at trade in.
Just curious - I have a Lexus SC400 from '97 that has the "premium Nakamichi sound system". I'm probably going to upgrade the drivers soon, but just keep the rest stock. Any chance the amps in my system are a Pass design?
Racket Scientist,
I have no idea if Nelson had anything to do with any Nakamichi amps. Listen to Nelson, If anyone would know he would be the one.
Thanks, Wade
I have no idea if Nelson had anything to do with any Nakamichi amps. Listen to Nelson, If anyone would know he would be the one.
Thanks, Wade
The Nakamichi versions of the Threshold "Stasis" amplifiers
stem from my designs. As far as I know, that's it.
After a few years, Nakamichi adopted another designer, whose
name I don't recall, who emphasized harmonic time alignment.
😎
stem from my designs. As far as I know, that's it.
After a few years, Nakamichi adopted another designer, whose
name I don't recall, who emphasized harmonic time alignment.
😎
I hope so Nelson you are not sore at me because I promised something, and I was not able to accomplish it.
I am the most sorrowful one because of this.
But what is late does not go by yeah.
Your Wacky Friend:
Gyuri
I am the most sorrowful one because of this.
But what is late does not go by yeah.
Your Wacky Friend:
Gyuri
Hi Wade,
What involvement did you have with the CLass A 3.0 & 6.0? The 6.0 is my all time favorite sounding car amplifier. It was so smooth sounding. I’d love to have a home version of what the 6.0 was. Hint, hint…
Rgs, JLH
- Status
- Not open for further replies.