ericn
Temp
Balance Engineer
Posts: 16,107 
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Post by ericn on May 23, 2023 11:43:13 GMT -6
The current draw problem was never about 2520 based designs it was first really noticeable when people started building 500 series in the Neve flavor.
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Post by thehightenor on May 23, 2023 13:09:07 GMT -6
I bought a BAE 1073D and AEA RPQ 500 from a very old and respected pro shop, I was about to buy an expensive 500 series chassis
and they told me to save my money and recommended I bought a Bento 6 from them which was half the price of the API equivalent at the time.
It's been faultless for the last 5 years (I hope I'm not tempting fate saying that!) and it tests as a very stable switch mode PSU 500 series 6 way chassis.
So take from that what you will.
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ericn
Temp
Balance Engineer
Posts: 16,107
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Post by ericn on May 23, 2023 17:22:00 GMT -6
I bought a BAE 1073D and AEA RPQ 500 from a very old and respected pro shop, I was about to buy an expensive 500 series chassis and they told me to save my money and recommended I bought a Bento 6 from them which was half the price of the API equivalent at the time. It's been faultless for the last 5 years (I hope I'm not tempting fate saying that!) and it tests as a very stable switch mode PSU 500 series 6 way chassis. So take from that what you will. Some of the dirt cheap lunch boxes have a secret sauce, the use the exact same PSU as the manufacturers larger chassis because it’s cheaper to buy and stock 1 PSU! The problem is many of these are apt to switch to another PSU at the drop of a hat! |
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Post by EmRR on May 23, 2023 19:26:54 GMT -6
Off the top of my head, 2520's are something like 25mA draw at idle but can draw 75mA when running in distortion. Lots of cases like that. API 2520 are around 10-15mA on each rail, a few mA more when under full load. They will never draw 75mA unless they are kaputt.
75 ohm load, 60mA with +/-15v supply, 85mA with +/-20v supply. From the data sheet. That would still be well within the original VPR spec. Point is many things have a range of current they might operate in. What would make a 75 ohm load? The typical 1:3 API output transformer with a 600R load resistor on the output side, or no load resistor but patched into a Pultec. Load R and a Pultec? 37.5 ohm load. |
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Post by thehightenor on May 24, 2023 6:06:38 GMT -6
I bought a BAE 1073D and AEA RPQ 500 from a very old and respected pro shop, I was about to buy an expensive 500 series chassis and they told me to save my money and recommended I bought a Bento 6 from them which was half the price of the API equivalent at the time. It's been faultless for the last 5 years (I hope I'm not tempting fate saying that!) and it tests as a very stable switch mode PSU 500 series 6 way chassis. So take from that what you will. Some of the dirt cheap lunch boxes have a secret sauce, the use the exact same PSU as the manufacturers larger chassis because it’s cheaper to buy and stock 1 PSU! The problem is many of these are apt to switch to another PSU at the drop of a hat! Well it wasn’t dirt cheap, it still cost my $300 and on close inspection it’s very well made, but you may well be correct. |
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Post by paulnajar on May 27, 2023 4:08:20 GMT -6
I'm looking at the Cranborne 500ADAT rack (its feature set is unique and pretty ideal for me). I've read good things but it'd be good to know it underperforms in some way. I have 3 of the Cranborne 500Adat chassis’s and they have been rock solid and their ADDA conversion is very good sounding. I am leaning towards more slots but not Cranborne as I’ve stopped using their summing and instead use insert IO’s in logic instead when mixing. I only ever see good reviews for the JLM 11 slot and as I’m in Australia the price is also right. |
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