Ibanez TS10 Circuit Analysis and Conversion Mods | How To
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- Опубліковано 21 сер 2024
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Sharing my research for the Ibanez TS10 Tube Screamer circuit and how you can mod any TS9/TS808RI to TS10-type. In this example, I use a DIY TS808 PCB to modify its values so it's a TS10.
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Love these circuit analysis vids and tips
Thanks for the feedback!! I'll keep 'em coming
parallel 2 chips, n put a chip carrier in ,its a cool sound....also try ganging the wiper of drive n tone pot :)
I don’t think it has anything to do with lowering the volume. You’re looking at a complex RC-filter with something that’s probably really awesome going on.
An RC filter always consists of a resistor and a capacitor, with the frequency cut-off between the low end and the high end being f=1/(R*C) and that’s with one resistor and one capacitor. In this RC-filter for as far as I can see at 3:31 you have at least one capacitor and a number of resistors in series in a closed chain serial signal.
Since as you know the capacitor passes on high frequencies more easily and the resistor low frequencies, this means that they resist the exact opposite. This means that when you measure over the capacitor, you measure resistance to low end, so the parallel circuitry will also take on the properties of the low end frequencies. The high end will resonate over the resistors.
The main question now becomes, what happens with multiple resistors in series with a capacitor in terms of frequency separation? Will both different valued resistors take different parts of the high end? How does the shift between low-end and high end happen when you measure between the two resistors?
That’s essentially what they do, but I can’t see at 3:31 what they connect to the non-inverting input. Do they connect the filtered signal to the non-inverting input? Or is it the designated ground? Is it a part of the ingoing signal? Or is it a part of the designated zero with V+ and V- setting the positive and negative limits of amplification?
Ask yourself this: is it about tone or about reducing the influence of 50 or 60 cycle hum?
Dude you should show how to mod a joyo vintage overdrive to ts10
Hey Ryan,
There's also 2 more differences between the ts9 and 10 besides the 220 ohm resistor, which are a different bias voltage for the input buffer and an emitter follower between the flip flop circuit and the input buffer ( which I doubt will make a sonic difference).
I cannot deny that the 10 sounds a bit darker than the 9 but I have always wondered if it was the 220 ohm resistor or the higher bias voltage on the input.
Did you try to take the 220 ohm out of the circuit to see if there was any sonic difference? I need to breadboard it and test it out..
That's a good idea (breadboard or possibly even a switch). I should have mentioned too that I was not taking in consideration the buffer part of the circuit since I am building a Tru bypass so I was strictly looking at the engaged signal. I'll double check the bias voltage between the two. Thanks for the collaborative help!
I think I found what you're speaking of as far as input buffer bias. You mean the 9v dropped by the 9.2k vs 9v dropped by the 10k (Vb)?
@@TheToneGeek precisely, a voltage divider of a 9k and a 22k resistor instead of the VR at half of the supply with the two 10k resistors. Which would bias the input higher, so I guess the 220 in series later on would compensate for that? Not too sure
@@miguelpessanha it's all part of the mystery! I'll try to do a circuit analysis if it shows anything. I know this topic has been combed over many of times and differences has always been thrown out because of the 5% tolerance on the resistors. 🤷♂️ I'm building that TS10 audio path circuit replica and compare it to my real TS10 to see.. video test soon after, of course.
They've increased the bias voltage of Q1 because its output then biases Q6, can't see the 220R resistor doing anything other than dropping the signal by about 2% so I doubt it's an audible difference. A switch that shorted out the 220R would demonstrate this.
Hey man, your diodes are MA856´s? Did you try to get closer to Panasonic MA150?
Can u mod ibanez metal screamer to sound like a TS10?.. i heard they are very similar in circuit
Hi Ryan, when you were working on your ts10 project (creating the schematic for the ts-10) Is it true that in the ts-10 there is a voltage divider only for the input buffer 9.2k and 22k plus filtering capacitor) and there's another one (voltage divider for vref). Thanks
Hot to mod a ts5 in to a ts10?
edit: i just realized, thnx
Isn't there a 9k1 /9k2 resistor in the ts10 in combination with the 22k to drop the bias voltage?
True yes. I might have missed that in this video
What is the device holding your pcb up in this video?
I have a link in the description to the exact place you can buy one 😬 thanks for watching!