Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 16th July 2006, 02:44 AM   #1
diyAudio Member
 
Join Date: Oct 2002
Location: Winnipeg MB Canada
Default Marantz MA500/U service manual please

Hello,

I am looking for a service manual for Marantz MA500U. (schematic and parts list)

If anyone has one please let me know. I can pay for a paper copy or an e-mailed copy would be appreciated as well.

Thanks

KevinLee
  Reply With Quote
Old 16th July 2006, 10:03 PM   #2
docfin is offline docfin  Europe
Account Disabled
 
Join Date: Apr 2006
Location: under the bridge
Marantz Model 500 schematics can help you?
  Reply With Quote
Old 19th July 2006, 12:24 AM   #3
anatech is offline anatech  Canada
diyAudio Moderator
 
anatech's Avatar
 
Join Date: Jun 2004
Location: Georgetown, On
Hi docfin,
Model 500 Marantz is a completely different 80 Lb animal. Earlier design and much higher build quality, discontinued in 1974.

-Chris
  Reply With Quote
Old 19th July 2006, 06:55 AM   #4
docfin is offline docfin  Europe
Account Disabled
 
Join Date: Apr 2006
Location: under the bridge
Hi anatech ,
thanks for info. I was disapointed witn number "500".

cheers
John
  Reply With Quote
Old 19th July 2006, 03:22 PM   #5
anatech is offline anatech  Canada
diyAudio Moderator
 
anatech's Avatar
 
Join Date: Jun 2004
Location: Georgetown, On
Hi John,
If you have the manual for the Marantz model 500, consider yourself blessed. Study the manual and schematic. Pay attention to the notes. This amplifier well ahead of it's time and can be a very good performer today.

-Chris
  Reply With Quote
Old 20th July 2006, 06:52 AM   #6
diyAudio Moderator Emeritus
 
lumanauw's Avatar
 
Join Date: Oct 2002
Location: Bandung
Send a message via Yahoo to lumanauw
Hi, Anatech,

How does Marantz500 compared to Marantz300DC? Which one is better?
  Reply With Quote
Old 20th July 2006, 12:37 PM   #7
anatech is offline anatech  Canada
diyAudio Moderator
 
anatech's Avatar
 
Join Date: Jun 2004
Location: Georgetown, On
Hi lumanauw,
Now that's a tricky question!

Most 500's you will see could use a strip and rebuild (a proper one). It's a 32 year old amplifier at the most optimistic. It could be up to 37 years old now. If you follow the manual, all the transistors will be matched and the adjustments will be properly followed. There are three DC offset adjustments per channel as I recall. Two are interactive.

The 300DC is my current main amplifier (or an Eico HF-87 that misbehaved last time I tried it). That amplifier needs to be properly gone over as well, being about 25 years old now.

Assuming they are both working properly, the 300DC might have the edge for sound quality. It certainly can't dump power like the 500 can. I could be happy with either one as they both can outperform many other amplifiers. I have had both in my system, but many years apart and in different rooms. It is hard to draw a fair comparison.

I would dearly like to try out the new, current Marantz amplifiers. They are just wonderful to look at.

-Chris
  Reply With Quote
Old 20th July 2006, 01:09 PM   #8
diyAudio Moderator Emeritus
 
lumanauw's Avatar
 
Join Date: Oct 2002
Location: Bandung
Send a message via Yahoo to lumanauw
Hi, Anatech,

No, I'm not playing tricks on you I just never heard both of them.
I have both schematics (who could be sending me that? ), both are really good designs.
The 300DC is diamond output stage, the 500 is interesting, it is 2 loop of inverting sections, making total non-inverting.
Both designs doesn't look 20 or 40 years old to my eyes They are fresh good looking designs.
  Reply With Quote
Old 20th July 2006, 01:20 PM   #9
anatech is offline anatech  Canada
diyAudio Moderator
 
anatech's Avatar
 
Join Date: Jun 2004
Location: Georgetown, On
Hi lumanauw,
I meant that the question you asked was difficult to answer. Sorry for the misunderstanding.

I have found that early Marantz designs were generally well ahead of their time. I didn't fully appreciate that at the time (young technician), but I did know they were built very, very well.

I think both amplifiers are very interesting designs. They have both withstood the test of time. One thing I love about the 300DC is the use of a regulator for each channel for the voltage amp sections. The value of this is lost on many people.

The Philips years were a complete waste of a brand name.

-Chris
  Reply With Quote
Old 4th August 2006, 02:26 PM   #10
diyAudio Member
 
Join Date: Oct 2002
Location: Winnipeg MB Canada
Does anyone know where I can source a service manual for the Marantz MA500U mono amp?

Thanks

KevinLee
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Marantz CD-84/CD-74 service manual? bleachershane Digital Source 5 4th March 2012 11:00 AM
marantz pm 84 service manual mosfet1 Solid State 1 20th December 2010 07:47 PM
Marantz St-83 service manual chicco_36 Digital Source 1 19th December 2010 08:24 PM
Marantz PM-50 Service Manual senee Solid State 0 6th September 2008 03:23 PM
service manual marantz sa-11 s1 ABO Digital Source 3 28th February 2008 12:34 PM


New To Site? Need Help?

All times are GMT. The time now is 12:07 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2