Search results

AVForums

Help Support AVForums:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
  1. Contrabass

    Supplying into grid in Jub

    Interesting read - http://www.jplandman.co.za/Home/Read/600?AspxAutoDetectCookieSupport=1
  2. Contrabass

    QUAD II collection

    Hi Chris, Am interested in the "working" Quad amp :)
  3. Contrabass

    Copy of Joburg noise control bye-laws

    Thanks for this - we have an establishment in our area (predominantly residential) which has license as a pub and grill but operates more as a night club which plays disturbingly loud music till 2am. Calls to JMPD and SAPS bear no fruit and residents are mad as snakes :mad:
  4. Contrabass

    AVR: Generator to APC UPS / UPS not happy with supply.

    I agree that this should be your first step - check if the frequency is correct. This is assuming your external AVR is regulating to the correct voltage. This external AVR most likely is not necessary as most generators (non -inverter) have an AVR built in which should regulate the output...
  5. Contrabass

    AVR: Generator to APC UPS / UPS not happy with supply.

    Here's a pic of the scope showing the not-so-good waveform from the generator. The inverter-generators would give a much better shaped waveform - obviously as the output is from an inverter.
  6. Contrabass

    AVR: Generator to APC UPS / UPS not happy with supply.

    Yes the UPS does not like the waveform of the generator and thus is kicking in and out. Could also be the voltage and frequency that are out of line but that can be easily measured and corrected. I put a scope on a Honda generator (I rate Honda generators in highly) and the output waveform was...
  7. Contrabass

    Sonor Audio

    Happy owner of a pair of HTMs from Roy. His speakers are grossly under-rated. All the best to Roy and his endeavors in the US of A and beyond :) (y)
  8. Contrabass

    Feeler: Bulk Lithium Battery Import (100Ah / 200Ah)

    Correct, the datasheet clearly states that the cells are "2nd Life" . At these prices and now with a warranty this is a better choice IMO than lead acid batteries...
  9. Contrabass

    Lithium batteries for alarm special

    I tested my 3x batteries at approx C/10. The battery or datasheet does not state the discharge current in order to obtain the rated capacity) Batteries were charged to 14.0V and charged was disconnected when the charge current was only a few mA. Discharge terminated and measurement stopped...
  10. Contrabass

    Lithium batteries for alarm special

    At what discharge rate did you test them at ? My 3x batteries arrived today (delivered very promptly) and I connected them in parallel and charged them to 14.00V (3.5V per cell). I will capacity test each one of them at approx. C/10 which is a common industry discharge rate. The one you tested...
  11. Contrabass

    WiFi Security Camera

    I have a number of Ezviz cameras and they are, IMO, better than the majority of products that are out there. This is very likely due to the lesser known fact that Hikvision owns Ezviz ! That wire-free camera would definitely work but I would rather look at the ones that come with a AC power...
  12. Contrabass

    Lithium batteries for alarm special

    Thanks SeanJammy. I have ordered a couple :)
  13. Contrabass

    Lithium batteries for alarm special

    @stereoholic. LiFePO4 batteries make very good lead acid replacements. The battery kindly offered by SeanJammy (at a very good price) would be a 4S cell configuration. (my guess is that it is a 4S2P cell configuration - 4x series and 2x parallel). A LiFePO4 cell requires a charge voltage of 3.5V...
  14. Contrabass

    RIP

    RIP Johan ➕ I had privilege of meeting him at his home as he performed his craftsman work to restore a decrepit Quad amp back to it's former glory. This is now a physical piece of his legacy. Sincere condolences to his family.
  15. Contrabass

    Quad II

    Beautifully done  :clap:
  16. Contrabass

    Variable DC P/S.

    Nice one Des. For a few $ more, from same shop, I got this one - https://www.robotics.org.za/HPS605D?search=bench Does up to 60V @ 5A and works well. I would have preferred and extra digit on the display to read the DC voltages more precisely. They have 2 other models - one does 30V @ 5A and the...
  17. Contrabass

    Carpenter needed, solid wood, TV audio kabinet

    I can highly recommend Millers Company. They have worked with Sonor Audio in the past so they are old school craftsmen ! They are based in Jhb. Contact Gilbert Miller +27 83 642 3322
  18. Contrabass

    How Safe Is It To Switch On A Quad Valve Amp After Being In Storage?

    Give that man a Bells ! Yes I would definitely be interested. As Eric has mentioned I have been looking to buy or build up a second unit. The single unit that I have (in those olde days people had mono hifi systems !) belonged to my father and was lovingly restored.  Audiojunkie  - I think we...
  19. Contrabass

    RIP

    BJ Thomas the pop, country and Christian singer passed away on Saturday. He was famous for songs such as:- Raindrops keep falling on my head; I just can't help believing; Hooked on a Feeling; Hey Won't You Play Another Somebody Done Somebody Wrong Song; He's got in all in control.
  20. Contrabass

    DIY 12v Trigger build - wanted to buy

    Pappa3, my Eco plug is a no name variety that a chap imported a pallet load from China and he gave me one  ;D The one from Ellies is a decent price but I looked on the Ellies website and don't find it there - hope it is not discontinued Keep us updated on your progress !                         ...
Top