Marantz 2325 (Fully restored) The best Marantz ever
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- Опубліковано 16 жов 2024
- Here is the details of the work done.
Replaced Power filter capacitors :-
Right Power Amplifier module:-
Removed Right Power Amplifier module,
Replaced and upgraded hot fasteners in driver stage,
Removed and tested Right Channel output devices,
Cleaned heatsink and replaced transistor insulating washers,
Replaced signal carrying transistor bolts and shakeproof washers,
Replaced critical coupler C701 with styro-bypassed Solen polypropylene,
Reworked poor soldering on previously replaced capacitors,
Re-assembled and tested.
Left Power Amplifier module:-
Removed Left Power Amplifier module,
Replaced and upgraded hot fasteners in driver stage,
Removed Left Channel output devices,
Cleaned heatsink and replaced transistor insulating washers,
Replaced signal carrying transistor bolts and shakeproof washers,
Replaced critical coupler C701 with styro-bypassed Solen polypropylene ,
Reworked poor soldering on previously replaced capacitors,
Re-assembled and tested.
Power Supply and Protection Circuit:-
Replaced and upgraded hot fasteners,
Reworked poor soldering on previously replaced capacitors,
Removed and serviced protection relay,
Re-assembled and tested.
Phono Amplifier:-
Replaced C401, C402, C403, C404, C413, H405, H406, H409.
Note: C413 polarity is incorrectly marked in this unit.
Dolby Tone and Meter Board:-
Replaced C601, C602, C607, C608, C609, C610, C611, C612, C613, C614, C623, C624, C627,
C628, C631, C632, C635, C636, C641.
Buffer Amplifier:-
Replaced CH05, CH06, CH07, CH13, HH11.
Am Tuner:-
Replaced C 167, C 168, C 169, C170, C171, C172, C173.
FM I.F. Amplifier:-
Replaced C204, C205, C208, C218, C219, C229, C242, C243, C244, C245, C249, C250, C256,
C260, 0261.
MPX Stereo Decoder:-
Replaced C302, 0304, C306, C307, C308, C309, C327, C328, C329, C331, C332, C337, C338,
Dolby Unit:-
Replaced C601, C602, C607, C608, C609, C610, C611, C612, C613, C614, C623, C624, C627,
C628, C631, C632, C635, C636, C641.
Pre and Tone Amplifier:- ( Reverted back to original BA312 module recently )
Removed Pre/Tone Amp board, desoldered and removed CE07, CE08, CE9, CE10, CE11, CE12,
CE13, CE14, RE11, RE12, RE13, RE14, RE15, RE16, RE18, REIS, RE73, E01, E02,
Removed components affected by glue, cleaned PCB and replaced components.
Installed BA312 Modules, RE73 and remaining capacitors,
Replaced critical signal couplers CE05, CE06 with Solen polypropylene
bypassed with Mundorf EVO 0.022uF.
Front Panel Assembly and lighting:-
Removed front panel, controls and switches,
Removed dial string mechanism,
Removed radio scale plate,
Removed lamp assemblies and light guide,
Desoldered and cleaned function indicator lamp bar,
Replaced pea lamps with LEDs provided in kit,
Replaced Axial lighting array with LEDs provided in kit,
Installed 3D printed light guide provided in kit,
Re-assembled front panel, controls and switches,
Re-strung dial drive mechanism,
Replaced cursor lamp in dial assembly,
Removed decomposing rubber component in dial assembly and replaced,
Tested all lamps and refitted radio scale plate.
Replaced the light guide for the tuning meters with the one provided.
Multipath and Other Switches:-
Replaced CU01, CUO2, CUO3, CU04, CU16, CU17, CU20, CU21.
Rear Panel Assembly and Wiring:-
Removed all rear panel mounted components in preparation for IEC power input modification,
Removed power cable and Switched / Unswitched Outlets,
Marked and cut out Unswitched Outlet hole to suit IEC connector,
Reassembled rear panel components and ferrite bar antenna,
Re-wired / upgraded primary circuit to Australian Standard.
Replaced speaker terminals with custom 3D printed assembly.
Upgraded the speaker terminals.
Final Assembly and Testing:-
Removed, re-tightened and refit main rectifier assembly,
Set Left D.C. Offset and Idle Current in accordance with Service Manual,
Adjusted Voltage Regulator in accordance with Service Manual,
Tested all functions,
Tested all inputs and outputs,
Tested Audio Power Output: 174.8 Watts RMS @ 852, Both channels driven @ 240VAC
Soak Test OK - 24 Hours,
Listen Test: OK.
Added WC43 Woodcase
Thank you for sharing , This sound like the high end of today.
I just got mine today at the flea market , I have not tested it yet.
Thanks 😊👍🏻
Is the phono preamp of the 2325 different (better) than the one of the 2270 and 2230?
Not 100% sure about that. Sorry.
Whoa!
Tannoy speaker🎉
Yes, my favorite 😊
The best ever ?!
How about the 2385 ?
I prefer 2325 over 2385and 2285B over 2325 for sound.
Che diffusori sono quelli più interni e stretti? Grazie
Celestion Ditton 66
what speakers are the big ones ? thank you
They are Tannoy Arden mki
HPD385 drivers
What sound do you like better,the Marantz or the Pioneer receiver?
Carlos Diaz sansui au 999
Is this piece for sale ?