![]() Every time we had to switch devices to another production run we would double check the bias. Pretty impressive when you realize that the Reference series were designed to operate into 1/2 ohm per channel.Īs far as the bias goes all amplifiers were adjusted in the lab to just above the appearance of crossover distortion not at a predetermined voltage. Usung these devices we built over 120.000 amplifiers in 17 years, and we did not have any failure problems. You could actually get away with less devices for the same power level. Especially if you put a filter in limitimg them to 100 ms, This information was determined by getting a SAO chart from the manufaturers, Motorola and TI, showing operation to 100ms, which increased the sOA to about 1.4x. The TIP102/TIP107 have a much better SOA rating. ![]() But he never looked at the Safe Operating Area. I'm guessing he switched to them because they were higher current devices. Those were used by the engineer that designed the Rubicon series. MOER, I never designed any amps using the TIP142/TIP147. I also can repair any Soundstream Old Ochool and Rubicon amps. If youi or anyone else has any more questions please feel free to contact me. Give me a better description of what you were asking and i will answer you. The tarantula was based on Pro amp that was part of Stewart World Series amplifier line. I had a Pro Audio brand named Stewart electronics. I also designed the tarantula and Davinci. I also designed all heat sinks, power and output connectors and rca input jacks. Also is it also true that the only issue with the amps were the ratings only spec'ed power supplies? Are you talking about thgere power ratings? Can anything be done with the factory D series amp to provide more margin in the power supply? Are you asking if you can get more power out of thge amps by modifying the power supplies? I designed the MC series, Reference series, the later CA series, Granite, uSA and SA series. I also added the CA100 an adaptation based on Nelsons original designs.Ĭould you give me a clearer description of exactly waht you mean when you asked. In the II series I re-laid them out on single PC Boards, then my company began manufacturing them. All I did tto solve this problem was to re-adjust the bias to a lower setting. A condition where the bias is set to high and over time the amps would overheat and shut down. They were laid out with point to point wiring which meant that they were not cost effective to build. That pisses me off.Click to oystg, The original D60, D100, D200, CA40 and CA50 were designed by Nelson Pass. Sorry Soundstream, I can't give you the fifth star because you lied about it being stable at 2 ohms. If you got one single efficient 12" sub in the right ported box it would probably be two or three times louder than what I'm hearing. I've been in loud bands for 14 years and this amp is loud enough that you feel like you have to turn it down after a couple of songs just to give your ears a break. I listen to things like Tool, NIN, Creed and some rap. ![]() Someone who wants loud, great sound without straining their electrical system. Who's the right person? Someone who doesn't plan on running it at 2ohms and is not concerned with breaking windows or winning competitions. Right now the bass blows away my buddies single 10" Kicker solobaric with a custom box and 400Watt ADS amp.įor the right person I would highly recommend this amp. With only 50 watts from the Soundstream they generate a surprising amount of good sounding bass. With the Sherwood I was sending 120 watts to the subs and they barely moved. The thing that shocks me is that this thing actually moves the subs pretty decently. Obviously sending this miniscule amount of power to a box that handles 800rms, 2400 peak is insulting but it will have to do until my MTX1000D arrives. 50 Watts to power two 12" Aluminum Blaupunkts in a fairly small sealed box that's only 1.25 Cu Ft per woofer. The sub box is wired for 4 ohms so I'm only sending 50 Watts to it. I've got a high end alpine head and I bought this amp to power 4 Polk 3-way 5x7's but I don't have my subwoofer amp yet so I hooked it up as a 3way. ![]()
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