Ross RGR 25 - schem / mod anyone?
- lolbou
- Old Solderhand
Hi there,
My lovely wife is so lovely that she played the guitar long before knowing me, even though she doesn't play anymore... She has an Epiphone Les Paul and an amp, which was stored in her parent's attic. I went seeking for it yesterday, and it appears to be a Ross RGR 25.
Nicely built (see the pic, it looks like a Cornish pedal!! ), nice sound too for practicing, but some pots are more than scratchy, even with good cleaning, and the EQ might need some alterations... I can get the pot values ok, but don't really have the time to trace it...
It features JRC4558DDs, Accutronics reverb tank, and a Tube Blaster channel (these two last features are footswitcheable)... I'd like to tweak it a bit while the board is removed for pots changing!
Does anyone here have the schem of this unit (pretty much unknown over the internet)? Thanks...
My lovely wife is so lovely that she played the guitar long before knowing me, even though she doesn't play anymore... She has an Epiphone Les Paul and an amp, which was stored in her parent's attic. I went seeking for it yesterday, and it appears to be a Ross RGR 25.
Nicely built (see the pic, it looks like a Cornish pedal!! ), nice sound too for practicing, but some pots are more than scratchy, even with good cleaning, and the EQ might need some alterations... I can get the pot values ok, but don't really have the time to trace it...
It features JRC4558DDs, Accutronics reverb tank, and a Tube Blaster channel (these two last features are footswitcheable)... I'd like to tweak it a bit while the board is removed for pots changing!
Does anyone here have the schem of this unit (pretty much unknown over the internet)? Thanks...
- Are you a mod or a rocker?
- Uh, no, I'm a mocker.
- Uh, no, I'm a mocker.
- borislavgajic
- Opamp Operator
Information
- Posts: 1542
- Joined: 27 Feb 2008, 14:23
- Completed builds: ...script phase90,ETI phaser,Ross phaser,mutronC200,vox wah,WH10,FW-3,mutronIII,DrQuack,Penfoldautowah,Tubezipper,
Dipthonizer,seekwah,Talkingpedal,morleywha
...soulpreacher,dynacomp,compulator
...buzzaround,fuzzfactory,screwdriver,sho,superdouper,St-9,RogerMayer octavia,Tychobrahe octavia,paralelluniverse,string damper,slowgear
...CE-2,ibanez fL301,EH theCloneTheory
EHX bassmicrosynth,EHX EnglishMuffin,Tube Phaser,springtubereverb ,greyDOD,FulldriveII mosfet,OCD,VOX repeat percussion,RingStinger,Meatball,12stage phaser.... - Location: Sombor , Serbia
- Has thanked: 131 times
- Been thanked: 281 times
lolbou wrote:Hi there,
My lovely wife is so lovely that she played the guitar long before knowing me, even though she doesn't play anymore... She has an Epiphone Les Paul and an amp, which was stored in her parent's attic. I went seeking for it yesterday, and it appears to be a Ross RGR 25.
Nicely built (see the pic, it looks like a Cornish pedal!! ), nice sound too for practicing, but some pots are more than scratchy, even with good cleaning, and the EQ might need some alterations... I can get the pot values ok, but don't really have the time to trace it...
It features JRC4558DDs, Accutronics reverb tank, and a Tube Blaster channel (these two last features are footswitcheable)... I'd like to tweak it a bit while the board is removed for pots changing!
Does anyone here have the schem of this unit (pretty much unknown over the internet)? Thanks...
cornish it is....
nice story
boris
- lolbou
- Old Solderhand
Sure it does!! Thanks a lot for this lovely first post/contribution : welcome aboard!
- Are you a mod or a rocker?
- Uh, no, I'm a mocker.
- Uh, no, I'm a mocker.
- lolbou
- Old Solderhand
Bump!
Anyone with that schem - properly - saved on his hard disk? Mine crashed some time ago, and I did not manage to rescue this file, and did not have a - proper - backup ...
Thanks for sharing again!
Anyone with that schem - properly - saved on his hard disk? Mine crashed some time ago, and I did not manage to rescue this file, and did not have a - proper - backup ...
Thanks for sharing again!
- Are you a mod or a rocker?
- Uh, no, I'm a mocker.
- Uh, no, I'm a mocker.
- deltafred
- Opamp Operator
I checked my old backup drive as it is the sort of thing I would copy for (possible) future use. Unfortunately I missed that one.lolbou wrote:Bumpy bumpy bump...
Sure? No one has saved the bloody schem with more care than me? Pleaaase...
Politics is the art of so plucking the goose as to obtain the most feathers with the least squawking. - R.G. 2011
Jeez, she's an ugly bastard, she makes my socks hurt. I hope it's no ones missus here. - Ice-9 2012
Jeez, she's an ugly bastard, she makes my socks hurt. I hope it's no ones missus here. - Ice-9 2012
- lolbou
- Old Solderhand
Cheers! That's the kind of habit I'm after, properly backing things up for future reference. I guess I've learned the hardest way!
Anyway, the amp is pretty reliable, but still... Anyone else?
Anyway, the amp is pretty reliable, but still... Anyone else?
- Are you a mod or a rocker?
- Uh, no, I'm a mocker.
- Uh, no, I'm a mocker.
From my backup drive to yours...
Doug
https://www.freestompboxes.org/download/ ... w&id=25195
Doug
https://www.freestompboxes.org/download/ ... w&id=25195
lolbou wrote:Cheers! That's the kind of habit I'm after, properly backing things up for future reference. I guess I've learned the hardest way!
Anyway, the amp is pretty reliable, but still... Anyone else?
- lolbou
- Old Solderhand
Thanks a bloody full lot Doug! It's already on two separated drives, with a third copy ready to have its own dropbox alias...
Thanks again!
Thanks again!
- Are you a mod or a rocker?
- Uh, no, I'm a mocker.
- Uh, no, I'm a mocker.
- lolbou
- Old Solderhand
Anecdotic bump :
The wife and I slept at the in-law's house last night. This morning, my wife decided to clear out some old stuff she had in a closet from her teenage years.
Minutes later, she came to me with a brand-new looking clear PVC envelope with mint looking amplifier owner registration card, list of all USA Ross repair centers, User Manual for most of the Ross RGR amplifiers, AND a clean and accurate print of.... the bloody schematic! I've requested it twice over the last years, and there was a cleaner than clean copy of it 8 km away from here!
My version is identical to the one online, from the circuit itself to the folding mark in the very middle of the paper sheet...
The wife and I slept at the in-law's house last night. This morning, my wife decided to clear out some old stuff she had in a closet from her teenage years.
Minutes later, she came to me with a brand-new looking clear PVC envelope with mint looking amplifier owner registration card, list of all USA Ross repair centers, User Manual for most of the Ross RGR amplifiers, AND a clean and accurate print of.... the bloody schematic! I've requested it twice over the last years, and there was a cleaner than clean copy of it 8 km away from here!
My version is identical to the one online, from the circuit itself to the folding mark in the very middle of the paper sheet...
- Are you a mod or a rocker?
- Uh, no, I'm a mocker.
- Uh, no, I'm a mocker.
- lolbou
- Old Solderhand
Had to call my nephew who's playing the amp to practice!Pauld35 wrote:hi does any one reading this know the model of reverb tanks these use, the part number or impedance ? Ta
Reverb in the amp is Accutronics 1AB2C1B which stands for:
Code: Select all
1 : Type 1
A : input impedance -> 8 ohms
B : output impedance -> 2250 ohms
2 : decay time -> Medium (1.75 to 3.0 sec)
C : connectors -> Input Insulated / Output Grounded
1 : no locking device
B : mounting plane -> Horizontal Open Side Down
- Are you a mod or a rocker?
- Uh, no, I'm a mocker.
- Uh, no, I'm a mocker.