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testing

  1. G

    RSL 3600 Monitors Frequency Responce and Measurement

    Hey all, hope you are doing well. I bought my RSL3600s a little over a year ago for 200 dollars and was very suprised at how good they sounded for the price. Now that I have a calibrated microphone, I can provide frequency responce information and more for these speakers that I did not see...
    • gosoh
    • Thread
    • data frequency responce rsl testing vintage speaker rsl
    • Replies: 3
    • Forum: Speakers
  2. stgtr

    Technics SH-8010 Troubleshooting

    Was gifted a Technics SH-8010 EQ by a coworker. Plugged it in on the bench and had power, and the switches on the front seem to work fine, everything lit up like it should. Tested on the bench from my PC with a 3.5mm to RCA into a pioneer Sx-780 I've been working on and had a good output, but...
    • stgtr
    • Thread
    • diy equalizer sh-8010 technics testing troubleshooting
    • Replies: 1
    • Forum: DIY
  3. ocdecio

    General testing procedure for amps

    After many restorations I am still uncertain as to the proper sequence to ensure an amplifier is in good working condition and ready for performance testing. Last week I had a 2238 that on the surface was working but 5 minutes into testing it, smoke came from an emitter resistor and a driver...
  4. D

    a/b switch for a/b testing

    My sonic memory is too short to resolve subtle differences between equipment if I have to rewire to test. Therefore I'm thinking of buying something like this Monoprice Dual-Source 2-Channel A/B Speaker Selector with Volume Control and Impedance Matching. This, and other brands like it, are...
  5. ocdecio

    Testing amp board without outputs

    I have a 1200 with a badly burned board. I am putting it back together but I would like to be able to test it as incrementally as possible so I wanted to connect the power source but have the outputs disconnected until I can make sure it is safe to do so. Is this something usually done and if...
  6. C

    Testing fisher 500c

    Hi, new member here. Might be a dumb question but here we go. Im meeting a guy to possibly buy a fisher 500c. I want to obviously test it out first so I was planning on just hooking it up to a power inverter from my car outlet. Just wondering if there is any risk of damaging the unit by testing...
  7. MKG

    hafler dh-200 issues

    alright, so- I've got two of these. both were working fine. I had installed a bridging kit and they worked fine after that, I then decided that I wanted to go back to two two channel amps. removed bridging kit. One is working fine. the other, I decided to go ahead and replace input/output jacks...
    • MKG
    • Thread
    • hafler dh-200 output mosfet testing
    • Replies: 5
    • Forum: DIY
  8. G

    How do you test electrostatic panels?

    I just acquired four 45.5”x8” electrostatic panels that I am looking to test. I know that I can’t test them like a conventional speaker, but I am not sure how else to do it. There are three identical wires coming out of each panel. Also, since I could not find a brand, model number, or any other...
  9. klamsoss

    Variac powered, fused, dim bulbed, and metered, switched bench power?

    Good morning race fans! Relative newbie looking for some input on a DIY bench power monitoring station... I have been working on tube gear for a year or so and the variac is a great tool. I have a 15A staco unit that weighs enough to use it for home defense. I also put together a DIY AC meter...
    • klamsoss
    • Thread
    • bench dbt dim bulb tester meters testing variac
    • Replies: 26
    • Forum: DIY
  10. Freezer7Pro

    An amplifier performance testing sheet

    I just figured I'd share the Excel sheet that I use for testing amplifiers in my shop. It's basically a suite of 17 tests to figure out if an amplifier is working properly/performing in spec. Most of the tests assume that you have some form of distortion meter, like a HP 339A or a low-noise...
    • Freezer7Pro
    • Thread
    • benchmark objective performance spec testing
    • Replies: 9
    • Forum: DIY
  11. audiodogster

    Quick question: hook 300wpc amp to efficient 200w RMS speakers safely?

    So I am taking some equipment into the studio at my school to test. I have my Genelec 8050As, some Cerwin Vega CV118 subs, and a Samson SX1200 amp (class AB). As everything in that environment uses XLR connectors and the Samson outputs to normal binding posts, I need to bring along some speakers...
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