Hello, greetings to the whole forum.
I need help getting the schematic diagram of the Torque Acoustics amplifier - T12
Already my big thanks to all.
best regards
I need help getting the schematic diagram of the Torque Acoustics amplifier - T12
Already my big thanks to all.
best regards
Being an older amplifier the design is simple. The main issues were capacitors ageing or leaking.
If you shared the issue, someone may be able to help.
If you shared the issue, someone may be able to help.
Torque were made by a company called Edgeworth Electronics in Darlington.
Can you provide a photograph of the amplifier PCB. I do not recognise the model number T12, but I may have a schematic for it.
Kevin
Can you provide a photograph of the amplifier PCB. I do not recognise the model number T12, but I may have a schematic for it.
Kevin
Hi all, have a nice afternoon and a good weekend.
At the suggestion of his colleague, Kevinaston 1, public the photos that were possible of the equipment, without disassembling it, in addition to say that the loudspeaker (Celestion tube 10) is not the original and more the power intregrado (TDA 2030), was replaced by TDA 2050.
To all my best regards.
At the suggestion of his colleague, Kevinaston 1, public the photos that were possible of the equipment, without disassembling it, in addition to say that the loudspeaker (Celestion tube 10) is not the original and more the power intregrado (TDA 2030), was replaced by TDA 2050.
To all my best regards.
Attachments
The TDA2050 produces more current than a TDA2030 but you will get no more power output from it as the speaker impedance and supply rails limit the power.
Did you check for dry joints on the TDA chip?
Did you check for dry joints on the TDA chip?
Hello everybody.
Really to the question posed by Jon Snell, I know that in order to get more power through the TDA 2050, I have to raise a little power attention, plus the replacement of the original speaker by Celestion Tube 10, is just because it has a better response in the useful range of the guitar, in addition to the performance that is 95 db, compared to the 91 ~ 92 of the original speaker.
In addition to that the amplifier is fully functional, my aim to get the scheme of it is that I want to introduce a reverb system, and also make use and include it in the front panel of a Phaser, put This would make it much easier to analyze the original scheme than to make a diagram from the board.
Thank you very much for the answers, and all the help will be welcome.
Have a good weekend
Best regards
Really to the question posed by Jon Snell, I know that in order to get more power through the TDA 2050, I have to raise a little power attention, plus the replacement of the original speaker by Celestion Tube 10, is just because it has a better response in the useful range of the guitar, in addition to the performance that is 95 db, compared to the 91 ~ 92 of the original speaker.
In addition to that the amplifier is fully functional, my aim to get the scheme of it is that I want to introduce a reverb system, and also make use and include it in the front panel of a Phaser, put This would make it much easier to analyze the original scheme than to make a diagram from the board.
Thank you very much for the answers, and all the help will be welcome.
Have a good weekend
Best regards
Sorry Julio,
All the schematics I have for Torque/Edgeworth are discrete output devices; I never serviced the later ones.
Edgeworth Electronics, who made Torque amplifiers were at Kellaw Road Yarm Road Industrial Estate, Co Durham, Darlington, DL1 4YA.
Jim Edgeworth retired and sold the company designs and name to a Chinese company in 2005.
I doubt you will find any service data, unless some old person like me has kept any archived copies of schematics.
Kevin
All the schematics I have for Torque/Edgeworth are discrete output devices; I never serviced the later ones.
Edgeworth Electronics, who made Torque amplifiers were at Kellaw Road Yarm Road Industrial Estate, Co Durham, Darlington, DL1 4YA.
Jim Edgeworth retired and sold the company designs and name to a Chinese company in 2005.
I doubt you will find any service data, unless some old person like me has kept any archived copies of schematics.
Kevin
kevinaston1, thank you very much for the effort and tips at this time, as my alternative is to disassemble the amplifier and make the survey of the scheme, as soon as it is done I make a sketch, and public, for future users.
My thanks to you all.
best regards
My thanks to you all.
best regards
Dear Julio, If you did make a diagram for the Torque TM 100p, I would be very interested to see it as I have one to mend, Regards
Hello everyone,
I also have a few Torque amplifiers for repair.
Is there any chance anyone has schematics or even reverse engineering diagrams?
Thank you so much
I also have a few Torque amplifiers for repair.
Is there any chance anyone has schematics or even reverse engineering diagrams?
Thank you so much
Short answer: forget it.
Original amp is a simple and good practice amplifier, 15W (TDA2030) with an 8" speaker .
A way too large 10" speaker was clumsily added, it does not even fit available space abd frame reaches PCB, where it may even short tracks, reaches both sides of cabinet wood, will sound muffled because of way too small acoustic size and to boot sound exits through original 8" hole, go figure.
As of a schematic of the 100W ones, I faintly remember having seen one, long ago.
As basic as can be generic Linn type power amp, think "RCA 70" and its myriad fmily.
So differential input pair (NPN or PNP), Class A gain stage, a.k.a. VAS, reverse polarity from input pair (so PNP or NPN respectively), load made out of 2 bootstrapped resistors, bias coming from 2 diodes + 1 resistor around 100 ohm orif they were fancy, an "amplified transistor", might even include a bias pot,go figure, a couple NPN-PNP TO220 class drivers , think TIP31-32 class, 50W amps saved a buck and used marginal TO92 ones (think BC630-640 class) and a coupke 2N3055 in the70s 80s or maybe complementary types in the 90s.
VERY generic and if you can repair one type, you can repair them all, no schematic really needed.
I bet experienced JonSnell can repair any of them, no schematic, one hand tied behind his back and while watching some Football on TV 🙂
PS: search for same era Carlsbro amp schematics, should be very close, being British and aiming to same market, think Cobra 90 and such.
As basic as can be generic Linn type power amp, think "RCA 70" and its myriad fmily.
So differential input pair (NPN or PNP), Class A gain stage, a.k.a. VAS, reverse polarity from input pair (so PNP or NPN respectively), load made out of 2 bootstrapped resistors, bias coming from 2 diodes + 1 resistor around 100 ohm orif they were fancy, an "amplified transistor", might even include a bias pot,go figure, a couple NPN-PNP TO220 class drivers , think TIP31-32 class, 50W amps saved a buck and used marginal TO92 ones (think BC630-640 class) and a coupke 2N3055 in the70s 80s or maybe complementary types in the 90s.
VERY generic and if you can repair one type, you can repair them all, no schematic really needed.
I bet experienced JonSnell can repair any of them, no schematic, one hand tied behind his back and while watching some Football on TV 🙂
PS: search for same era Carlsbro amp schematics, should be very close, being British and aiming to same market, think Cobra 90 and such.
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Thanks JMFahey,
I agree the Torque schematics should be similar and similar topology between the different models.
But still looking for the schematics as they're must exist somewhere and could be useful for more users also.
Thanks
I agree the Torque schematics should be similar and similar topology between the different models.
But still looking for the schematics as they're must exist somewhere and could be useful for more users also.
Thanks
Hi everyone, I thank you for your opinions and recommendations. As for the comment from JMFahey, because the inclusion of Celetion Tube 10, required some DIY, but this only happened, because the original Torque 12 speaker, has a very limited response in the higher range. The use of the TDA2050 includes increasing the supply voltage from the original 15.4 V AC to 17.5 V AC, which in DC is practically the safe use limit of the TDA 2050.
As for the inclusion of a reverb line, why not? The amplifier itself is too basic, so any improvement is always a plus, given that the power has gone up a bit and some effects are always welcome.
Changes to the enclosure to include the 10 "speaker included widening the enclosure hole as well as cutting off part of the chassis to allow it to fit smoothly.
The result was satisfactory even though it has the limitations of an adaptation. As for reverb and tremolo, I'm still back from the project.
The home-made reverb line, with a small 8-ohm speaker, acts as a drive and a piezo as a receiver.
When everything is working, I'll give you more news.
Best regards
J.B.
As for the inclusion of a reverb line, why not? The amplifier itself is too basic, so any improvement is always a plus, given that the power has gone up a bit and some effects are always welcome.
Changes to the enclosure to include the 10 "speaker included widening the enclosure hole as well as cutting off part of the chassis to allow it to fit smoothly.
The result was satisfactory even though it has the limitations of an adaptation. As for reverb and tremolo, I'm still back from the project.
The home-made reverb line, with a small 8-ohm speaker, acts as a drive and a piezo as a receiver.
When everything is working, I'll give you more news.
Best regards
J.B.
Hello, by forgetting, I did not mention the reverb line characteristics which are as follows: 3 springs, split left with half winding, right winding after half. Z in = 8 omhs, Z out approx 1 M Omh.
In rehearsals, the sound is satisfactory, it remains to know how it behaves in the rest of the set.
Hello, by forgetting, I did not mention the reverb line characteristics which are as follows: 3 springs, split left with half winding, right winding after half. Z in = 8 omhs, Z out approx 1 M Omh.
In rehearsals, the sound is satisfactory, it remains to know how it behaves in the rest of the set.
One must keep in mind whenever it is a DIY reverb line.
Best Regards
In rehearsals, the sound is satisfactory, it remains to know how it behaves in the rest of the set.
Hello, by forgetting, I did not mention the reverb line characteristics which are as follows: 3 springs, split left with half winding, right winding after half. Z in = 8 omhs, Z out approx 1 M Omh.
In rehearsals, the sound is satisfactory, it remains to know how it behaves in the rest of the set.
One must keep in mind whenever it is a DIY reverb line.
Best Regards
Cool, upload some pictures about it.
The "electronics" side is not as complex as the "mechanical" one
The "electronics" side is not as complex as the "mechanical" one
Hello, a good "2020" for everyone.
About the spring delay, I can only say that the end result was the result of many and many experiments, so I came to the conclusion (empirically) that the best result was obtained with three delay lines (springs). As I mentioned and no, the length of the reverb box had to be adapted to the space inside the speaker box
We chose to mount the line on the back cover of the box, which would not be the best place but was the only one available.
As I said earlier, only after having everything connected can I make a concrete assessment.
Best regards and have a nice new year.
J.B.
About the spring delay, I can only say that the end result was the result of many and many experiments, so I came to the conclusion (empirically) that the best result was obtained with three delay lines (springs). As I mentioned and no, the length of the reverb box had to be adapted to the space inside the speaker box
We chose to mount the line on the back cover of the box, which would not be the best place but was the only one available.
As I said earlier, only after having everything connected can I make a concrete assessment.
Best regards and have a nice new year.
J.B.
My thanks to JMFahey for the Calsbro diagram, Torque 12 is still more basic, much more basic, but the final way to get what you want is to go through several trials, as mentioned before, after results, given as yet I built the PCBs, I have no results to disclose.
A Good Year To All.
J.B:
A Good Year To All.
J.B: