Subject: Re: Marantz spare parts available!
From: [email protected] (John E. Buckingham)
Date: 1996/12/08
Message-Id: <[email protected]>
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Jim,
I have a 7C preamp. need to update electrolytic cans . Price list available
with schematic and corresponding part numbers? Power lamp sometimes bright
and sometimes dim. Rectifier?
John

In article <[email protected]>, [email protected] says...
>
>At long last... spare parts for your Marantz 7, 8B, and 9 are available
>again!
>
>At this time, availability is somewhat limited. We are not offering
>faceplates, access panels, or cages yet. However, an idea of the types of
>things that we can get for you:
>
>Model 7 top and bottom plates (yes- the paint _does_ match your original)
>Electrolytic capacitors
>Model 8B and 9 bias meters
>Transformers (power, output, and chokes)
>Switches (bias, selector, tone controls)
>audio capacitors (not "black cat" brand, but high quality poly caps)
>12AX7, EL34, 6DJ8 (all new production) tubes
>Miscellaneous hardware and components.
>
>We will be adding more parts to the list as production schedules permit.
>
>Parts are subject to availability, and we have not set all prices yet, but
>these parts are almost all custom-manufactured for VAC/Marantz and our sale
>prices do reflect this.
>
>We will be able to take credit cards soon, but right now we are on a COD
>or check in advance basis.
>
>If you are interested, please call the VAC factory at (919) 596-1107
>between 9 AM and 5 PM eastern time. Ask for Jeff. If I can't get to the
>phone, please leave a message with the nice person answering the phone and
>I'll get back to you- I promise. You can also fax us at (919) 596-2037
>
>Finally, I regret that we can only assist folks in the USA and Canada
>with regard to these spare parts.
>
>Thanks and take care,
>
>Jeff Strang
>[email protected]
>

Subject: Re: Marantz 8B transformer & output into 4 ohm?
From: "Michael S. LaFevre" <[email protected]>
Date: 1996/11/14 Message-Id: <[email protected]>
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Homme Fatal wrote:
> > Can someone tell me how good the Marantz 8B transformers are in > terms of modern standard? What is so good about them?
> > What is the power output rating into 4 ohms?
> > Thanks in advance.

In the Peerless archives we have outptut tranney designs for both the 8B and the 9 amps. For the 8B there were actually three designs penned by Peerless engineers for this project. There is a copy of intra-office memp regarding inductance tests with unbal DC for the trans. All three of these are nice designs...

For the record...let me state...to the best of my knowledge...and from what I can glean from the notes in the folders Peerless did *NOT* wind up (pardon the pun) building these for Marantz. But *if* the designs in the archives are representative of what Marantz did settle on...then it is indeed first rate designs for each the 8B and the 9.

Cores were designed very conservatively...flux densities for the 8B amp where down around 13K at full power @ 20 hz. They used a distributed air gap (stacking was done 8X8). Interleaving was fairly extensive...they used excellent dielectrics (polypropylene in this case)...overall they were just damned good designs.

Mike

Links

MARANTZ AMERICA PRESENTS MARANTZ CLASSICS: RE-ISSUES OF LEGENDARY VACUUM TUBE COMPONENTS
http://www.dba-pr.com/marantz/clasc.html

Press Release: MARANTZ CLASSICS: THE INSIDE STORY ON THE REBIRTH OF LEGENDARY MARANTZ TUBE COMPONENTS
http://www.dba-pr.com/marantz/inside.html

This page last updated on November 18, 1996.

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