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motorino
Joined: 24 Aug 2005
Posts: 212
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 Posted: Sun Aug 31, 2008 1:18 pm Post subject: Grampian Preamp Jamaika Style |
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i received all the components
NOS NE5534 (better than chinese news), Wima caps, precision metal film resistors, and cermet Pots
I have components for made 2 preamps, first i made the original with balanced output, after i believe made other one...
I have a old filter in a good box, i remove one, use the power supply and i added a Ant (Neumann) vu-meter
Next week the test!
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Steve E.
Site Admin
Joined: 24 Jun 2005
Posts: 255
Location: Brooklyn, NY USA
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| Posted: Sun Aug 31, 2008 6:59 pm Post subject: |
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| I look forward to it! |
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flozki
Joined: 19 May 2006
Posts: 61
Location: switzerland
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| Posted: Thu Nov 27, 2008 4:20 am Post subject: |
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any updates yet?
does someone cut already with this type of preamp?
flo |
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emorritt
Joined: 09 Nov 2006
Posts: 87
Location: Louisiana
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| Posted: Sat Nov 29, 2008 2:01 pm Post subject: |
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| Yes I built from the original schematic you posted Flo and it works great. Just a little too much high end - I'm trying to change the resistor/cap arrangement around the first three amp chips, maybe eliminate the 50pf/10K and change the 30pf value on A-1 and possibly try using your other RIAA circuit in place of the C/R network on A-4. The box I built has a common connector going to the cutting head, and a terminal strip that connects the preamp circuit to my Presto 92A amp. Cut several disks for customers with the box as-is and no complaints. Sounds very good. |
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