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 Forum index » Wanted, For Sale, Opportunites and Requests » Parts and Components
Rare bargain on Motorola MC1494L (Sold out)
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Peake



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PostPosted: Sun Sep 30, 2007 12:21 pm    Post subject: Rare bargain on Motorola MC1494L (Sold out)
Subject description: Used in the Bode FS, Buchla 285
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I'm told that this is the non-military spec'd version of the MC1594L.

Considering that I've recently been quoted prices of up to $75.00 per chip from a broker, this is a Godsend. If you're into RMs that must be trimmed and stand a chance of bleed. Mmmm, vintage.

Lots of 10, never used, $7.25 plus shipping (USA).

http://tinyurl.com/25ck6k

Sorry if posting eBay items is against forum policy. Please delete this post if so.

Edit: It's not in the Oberheim; the MC1495 is.

Last edited by Peake on Thu Nov 08, 2007 7:07 pm; edited 2 times in total
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mosc
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PostPosted: Sun Sep 30, 2007 12:49 pm    Post subject: Reply with quote  Mark this post and the followings unread

No, it's OK. This is information that will be of value to some members.

Personally, I like the laser trimmed multipliers from Analog Devices. Hey, before you jump on me, these are vintage devices and were introduced in the early 70s. If you want, you can add a trim pot to detune them and get all the bleed through you want. Wink

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Peake



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PostPosted: Sun Sep 30, 2007 3:36 pm    Post subject: Reply with quote  Mark this post and the followings unread

How dare you use quality parts!!! Laughing

The RMs I like, excepting the GX1 and CS80, all use the 1494 or earlier ICs. None of my favorite RMs use the 1496. I don't know why. There's just a rawness that I like. Vintage oscillators and chips like the 1458 in the circuit might also help. Who knows.

I'll try multiturn trimpots and see if they null correctly or not.

BTW, the Aries RM schematic is available at

http://freeinfosociety.com/electronics/schempage.php?cat=1
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23isgood



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PostPosted: Mon Oct 01, 2007 11:06 pm    Post subject: Reply with quote  Mark this post and the followings unread

Cool. I ordered some. The Aries schematic looks very simple. Is it worth building more than one? Oh, and how do you trim these?
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v-un-v
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PostPosted: Tue Oct 02, 2007 2:02 am    Post subject: Reply with quote  Mark this post and the followings unread

23isgood wrote:
The Aries schematic looks very simple.


Madly enough, so does the CS80/ GX1 RM schematic Shocked

Did the EMS VCS3 use the 1496 or the 1494 Question I can't remember.

btw, "Nebulous dawn" from Tangerine Dream's " 'Zeit' LP is VCS3 RM heaven Cool My wife got that sound once on her Nord Modular. I've NEVER been able to get it back again Evil or Very Mad

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Peake



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PostPosted: Tue Oct 02, 2007 9:27 am    Post subject: Reply with quote  Mark this post and the followings unread

I didn't look at the Aries schemo long enough to notice if there were trimmers. Use .05% resistors or invite bleed? Wink

Edit: Whoops, made me look. There are X and Y null trimpots on the Aries RM. But, looking at the schemos, you knew that. Try multiturn trims for accuracy.

The Synthi Ring Modulator likely uses the earlier LM1495, like the Oberheim pedal.
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