hardfinger Posted March 17, 2006 Share Posted March 17, 2006 HI, I have a small "accessit" compressor which has no model number on it but does say 'BANDIVE' on the back. It was given to me as a gift and has no power supply included.. As I am in australia I need to have it converted to aussie power but the problem is that it requires a 2 rail power supply.. one is an unknown +v unreg And the other is 18+v reg.. I also dont know how many milliamps it needs???Its a 5pin din plug at present.. Anyways what does anyone know about this little compressor? is it any good? whats it worth? not much I imagine but any help is welcome.. cheers Ari Link to comment Share on other sites More sharing options...
dbuckley Posted March 17, 2006 Share Posted March 17, 2006 Thats interesting. I too have an old Accessit compressor which to this day use for compressing (well, soft limiting really) the show relay feed before injecting it into the cans, but in its heyday (decades ago) I used to compress bass guitar with it. It is battered to heck and back, but still works every time when switched on. Mine requires only a single positive voltage through an RCA plug. The Bandive era was later than the original Accessits (in the fetching green box) so it seems odd they changed the power requirements... Link to comment Share on other sites More sharing options...
Andygreen Posted September 26, 2006 Share Posted September 26, 2006 Somewhere I still have the circuit diagram of the Bandive version. As I recall, the two power supply voltages mentioned are +18v and just +VIt internallly generated a split rail supply using two 680 ohm resistors as a potential divider You could use either of them, as they were regulated by an 18volt zener diode, the only difference being the series resistor - the + input had a larger value, and could be used up to about 24 volts. It was a simple FET VCA design, but it had a nice attack time and the soft knee made it suitable for a wide variety of inputs, from single instruments to whole mixes! Back in 1983 I copied the design and made a triband version - a crossover to split the audio into low (below about 500 Hz) Mid and High (above 3 kHz) and used this to process the feed for an AM radio station transmitter - sounded pretty good! Andy Green Link to comment Share on other sites More sharing options...
tonyreeves Posted October 10, 2008 Share Posted October 10, 2008 Somewhere I still have the circuit diagram of the Bandive version. As I recall, the two power supply voltages mentioned are +18v and just +VIt internallly generated a split rail supply using two 680 ohm resistors as a potential divider You could use either of them, as they were regulated by an 18volt zener diode, the only difference being the series resistor - the + input had a larger value, and could be used up to about 24 volts. It was a simple FET VCA design, but it had a nice attack time and the soft knee made it suitable for a wide variety of inputs, from single instruments to whole mixes! Back in 1983 I copied the design and made a triband version - a crossover to split the audio into low (below about 500 Hz) Mid and High (above 3 kHz) and used this to process the feed for an AM radio station transmitter - sounded pretty good! Andy GreenI have a bandive Accessit compressor and exciter - both without power supplies - and in both cases on the back is a 5 pin DIN, with the ledgend +25V unreg on the left, 0V on the centre pin, and +18V reg on the right. Tony Reeves Link to comment Share on other sites More sharing options...
dbuckley Posted October 11, 2008 Share Posted October 11, 2008 Well blow me down - Mr Reeves - the man who made the amplifiers that still drive my Celestion SR PA to this day - funny the people you find on the Blue Room Link to comment Share on other sites More sharing options...
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