Since their creation in 1954, the original stopbar and also tune-o-matic have actually changed really little, if at all, which is a testimony to their design quality and also timeless functionality. Looking very closely at this standard bridge/tailpiece combination that graces such legendary tools as the Les Paul and also the SG, it’s straightforward to check out why.

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Tune-o-matic: With the capacity to easily readjust each separation, personal, instance string size using the six equivalent screws, an exact intonation can be achieved. 2 thumbwheels enable for bass and also treble string elevation adjustment if two large bolts securely mount the bridge straight into the timber of the guitar successfully transferring cable vibration and also tone.

Stopbar: Positioned behind the tune-o-matic bridge, the stopbar supplies two very huge bolts and also anchors the mount straight into the guitar. Due to the fact that of the weight and stability, the is an extremely effective at keeping the instrument in tune since it does not move. It is also very effective at transporting every wire vibration come the etc contributing to enhanced sustain and also the overall tone of the instrument. Additionally, the height of the stopbar deserve to be adjusted to create much more or less string “break angle” over the tune-o-matic leg by rotating the two huge bolts. In general, the better the wire angle end the bridge the far better for tone and also sustain yet if you find that you space breaking a many strings in ~ the bridge, you might try raising increase the stopbar a little.

Despite the success and integrity that the stopbar/tune-o-matic system, Epiphone performed tests and experiments to view if and how this classic mix might be boosted upon. That was established that two improvements could be made.

During string alters when and also if every the strings space removed, both the stopbar and tune-o-matic can and also often autumn off of your anchor bolts. This can an outcome in a wide selection of minor problems ranging from them disappearing under a road situation to being put back on erroneously to just general annoyance. Therefore, there essential to be some means to “lock” both the stopbar and the tune-o-matic on their posts – ideally, there is no the need for tools.

After conducting sustain tests, that was determined that the tighter the fit of the stopbar and also tune-o-matic on your posts and also hence, the greater surface area contact – component to part – the much longer the sustain and the better the tone.

With this two objectives in mind, we set out to more perfect the design and we are proud come announce the development and introduction of the “patent applied for” Epiphone LockTone™ stopbar/tune-o-matic system.

Without adversely affect their standard appearance and also without the need for extr tools, this device not only “locks” top top the posts automatically and also eliminates inadvertently drops, it also adds “tone” and sustain.

In order come validate the over claim concerning sustain and tone, we carried out the following lab tests. Listed below are the results.

For the an initial test us plucked the wire under test and recorded the signal using Sonor™. ~ the signal was recorded we analyzed the waveform using Sound Forge™. We made note of the RMS power (in dB) of the signal in ~ impulse for 0.1 sec. And also then made keep in mind of the RMS strength for 0.1sec at 5 secs from impulse. In ~ this allude we calculate the fall in decibels from impulse to 5 secs for every string. We provided the average drop (over the 3 trials) for each string and then the all at once average the the 3 strings combined.

Here is the average decrease in dB’s from advertise to 5 seconds for each string and the in its entirety averages because that the strings combined:

Epiphone Stopbar/Tune-o-matic System

6th : – 6.53dB4th : – 23.79 dB1st : – 37.31 dB

Average that all 3 string averages combined = – 22.54 dB loss

Epi LockTone™ Stopbar/Tune-o-matic System

6th : – 6.9 dB4th : -15.36 dB1st : – 29.70 dB

Average the all three string averages combined = -17.32 dB loss

Based upon the above, the Epi LockTone™ system showed a nice rise over the Epi non-locking system. In general, the Epi Locking system was over 5dB better after 5 seconds.

The other exciting conclusion is the reality that high strings perform not sustain and low stings. After looking in ~ the physics connected this result supports this theory. High frequency signals space dampened much faster than low frequency signals. This fact likewise plays a large part in just how well harmonic contents is regarded in a signal. If friend look at just the first string the boost from the Epi w/o lock come the Epi Locking device was over 7.5dB better. This boost should aid with both the sustain top top the high notes and the harmonic contents of lower fundamentals.

For the second test, we merely removed all the strings ~ above a etc equipped through the LockTone™ system. ~ removal, us turned the guitar upside down and shook that vigorously. Uneven the continual system, the LockTone™ walk not relocate or come turn off the guitar.

Based top top the above, we space satisfied that us have completed our two design advancement objectives.

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Thanks to the work of our staff and their passionate search of performance, Epiphone is proud come announce the LockTone™ stopbar/tune-o-matic system. Unlike other systems that require tools to readjust and remove, the LockTone™ automatically locks the stopbar and the tune-o-matic ~ above their posts for included security and also improved sustain.