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Get familiar with the reaction system: Introducing the Reaction System
hongrn
About
- Username
- hongrn
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- JasonP
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Comments
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I scored 2 brand new digital soldering stations for $50 each, 5 soldering tips, 7 lead-free solder rolls, and a soldering gun for $20. I'm happy.
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I spoke to Lowell a couple of times by phone the past several months, having noticed his absence from PETT. He had a few health challenges that he had to face, but overcame them courageously. He's doing OK now, and as Chuck noted above, is keeping a…
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Craig, so much respect for your tube amp design. I wish there is an idiot guide to tube amp building, but there isn't.
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(Quote) Ani, I have started using my jig more than DATS due to the same reasons. I'll be doing a direct comparison of both this weekend and report back to all.
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And here's the complete guide on .pdf. Enjoy.
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And please don't forget to read Charlie Laub's excellent guide on how to generate FRD files for your drivers using the ARTA module. Once you know how to obtain T/S parameters, model your box, generate ZMA and FRD files, cr…
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5. In the Loudspeaker Parameters – Added Mass Method dialog box: a. The frequency shift is 30% with the 20g, so within the recommended limit. Add or subtract weight as required to ensure the shift is correct …
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3. Click Record again. When the recording stops, you should see the plot below. The first impedance graph (blue) is the original measurement, the second one (black) is with the added weight. (Image) 4. N…
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To Obtain T/S Parameters: 1. Save the graph in Section 10 as an overlay by selecting Set as overlay curve in the Overlay menu. (Image) 2. Add about 20g of weight to th…
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11. Under the File menu, select Export as Plain .ZMA file. (Image) 12. Save the file on a hard drive location, and load into PCD to test. You should see the ZMA file appear on the driver impedance box as shown below. As …
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9. Now click Record to start the measurement process. (Image) 10. After about 8 seconds, the recording stops, and the below plot is displayed:
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d. Under the Setup menu, select Measurement. (Image) e. In the Measurement Setup box, change Averaging to Linear, and Max averages to 10. f. Click OK to accept these changes. &…
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8. After calibration: a. Position the driver on a hard, flat surface while ensuring that the venting hole is not blocked, and connect the speaker driver to the jig. …
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7. Next, calibrate the soundcard: a. Click on the CAL icon to bring up the Calibrate Input Channels box. b. Click on Calibrate in the Dialog Box to calibrate both channels. LIMP will&am…
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5. Go to the Setup menu to select the drivers for your particular soundcard: (Image) 6. My soundcard is a Creative EMU 0204, so my setup looks like this:
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To generate a ZMA file from a speaker driver: 1. Connect the finished jig to the computer soundcard using the appropriate cables. 2. Start the LIMP module. Click Continue in Demo Mode. LIMP is fully functional in demo mode, excep…
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Jig Construction: (Image)
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Great job Mike! I wish I had the option of using the prefab cabs to cut down on time it took to finish each project.
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You're right. Didn't have its sensitivity off the top of my head.
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I'm seriously thinking about 2 of these in parallel, mated to a RS28A or a CD and waveguide for singing purposes. SPL of 99 and audiophile SQ? How can you beat that?
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Well spit it out Face!
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Geoff, what's the Xmax on this driver? Couldn't be more than 2 or 3mm - that's my guess. Thanks.
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It's fine. Get some metal epoxy from Home Depot and glue it back. The inductance value and DCR will remain unchanged if you compared it to your other inductor. I speak from experience.
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Man, that's my next thing or things to learn: how to build a tube amp. Nice work Craig!
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Too short a life. My sincere condolences to all who knew Matt.
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The more I build and the more I post, the thicker my skin becomes. I used to get rattled big time and feel insecure about the hobby, but no longer. If I make a mistake or post the wrong answer, so be it. Call me out on it. Do I give a fuck? Heck no.…
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The build is right here: http://techtalk.parts-express.com/forum/tech-talk-forum/62610-esp-project-101-lateral-mosfet-amplifier?243262-ESP-Project-101-Lateral-MOSFET-Amplifier=
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Ani, take a look at this. I've had it for almost 3 years now, and not a single issue. It's Class AB though: http://sound.whsites.net/project101.htm
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Good project Chuck. By the way, they mixed up your project name and designer name on the Project Gallery site.
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Thanks everyone. I love the way they sound. The whole write up should be in the Project Gallery soon.