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Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

Doug Self Preamp from Linear Audio #5
Doug Self Preamp from Linear Audio #5
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Old 16th July 2019, 06:48 PM   #1421
Carl_Huff is offline Carl_Huff  United States
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Quote:
Originally Posted by Hicoco View Post
I did not make attention of that, but look likes yes in my I/O board.. May be Carl could answer better than me.
Yup, RED is RIGHT
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Old 16th July 2019, 06:55 PM   #1422
jwilhelm is offline jwilhelm  Canada
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Originally Posted by Carl_Huff View Post
Yup, RED is RIGHT
Left or right will depend on the brand of RCA connectors. A lot of Switchcraft connectors are reversed.
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Old 16th July 2019, 07:31 PM   #1423
Carl_Huff is offline Carl_Huff  United States
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Originally Posted by jwilhelm View Post
Left or right will depend on the brand of RCA connectors. A lot of Switchcraft connectors are reversed.
Hello Jeff, It is nice to see you here.

In this case i was referring to the phono blocks that I provide in the PCB kits. The LEFT/ RIGHT balance control assumes 'RED is RIGHT' and 'WHITE is the LEFT' channel.
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Old 16th July 2019, 07:53 PM   #1424
bk856er is offline bk856er  United States
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Doug Self Preamp from Linear Audio #5
Quote:
Originally Posted by Carl_Huff View Post
Hello Jeff, It is nice to see you here.

In this case i was referring to the phono blocks that I provide in the PCB kits. The LEFT/ RIGHT balance control assumes 'RED is RIGHT' and 'WHITE is the LEFT' channel.
Thank you, Carl. That is crystal clear. And leaves me puzzled why several chassis layouts, employing the I/O board and your phono blocks, are labeled incorrectly. Minor detail and just my OCD, does not affect function!

BK
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Old 17th July 2019, 06:31 AM   #1425
tcpip is offline tcpip  India
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Are any of these boards still available?
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Old 17th July 2019, 03:45 PM   #1426
Carl_Huff is offline Carl_Huff  United States
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Originally Posted by tcpip View Post
Are any of these boards still available?
Please check your personal email. I just sent you a message.
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Old 3rd August 2019, 08:49 PM   #1427
bk856er is offline bk856er  United States
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Doug Self Preamp from Linear Audio #5
Some pics below of the "finished" product. I went with a 16x12x2" alodine par-metal enclosure to match with some other projects on my rack. Neglected to account for the larger shaft nut on the Lorlin and stole some larger black knobs for now. The front/rear panels are temporary until I get something from FPE with labeling, but this allowed me to exactly confirm the layout. Grounded xlr pin1 to the chassis with short wires. Needed a tantalum cap on the I/O board to get 12V. Added a rotary mute switch (the inner black knob) - heck, had to do something with the minimum order qty 5 Lorlin switches!

BK
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Old 4th August 2019, 04:07 AM   #1428
jan.didden is offline jan.didden  Europe
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Very well done! Where do you get those enclosures?

Jan
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Old 4th August 2019, 04:29 AM   #1429
brian92fs is offline brian92fs  United States
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Doug Self Preamp from Linear Audio #5
Par-Metal . AMBís website has details about how to order them to get that look. Essentially, you ask for front panels front and rear, but without the panels themselves. Then order 4mm panels from Front Panel Express.
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Old 4th August 2019, 04:49 AM   #1430
bk856er is offline bk856er  United States
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Doug Self Preamp from Linear Audio #5
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Originally Posted by brian92fs View Post
Par-Metal . AMBís website has details about how to order them to get that look. Essentially, you ask for front panels front and rear, but without the panels themselves. Then order 4mm panels from Front Panel Express.
Yes, that's it, although what I show is with the default par-metal front/back panel that I drilled myself to verify my pattern. 16x12x2 is not a standard size, but it shipped within a day or so and is very reasonably priced. Just email them for a quote. My other project with this enclosure is the AMB gamma-3 DAC.

BK
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