T1 ToneMatch® Audio Engine: Difference between revisions

__NOEDITSECTION__ {{T1 icon}} {{Model II icon}}  

| valign="top" | [[Image:005 Bose T1.gif|Bose T1®]]  

See: [[T1 ToneMatch® Audio Engine / Blue Screen Fix]]  

'''<big>Downloads</big>'''

**[[L1® Model II Power Stand Firmware Updates|L1® Model II Power Stand Firmware Updates]] - includes bug fixes

**[[T1 ToneMatch® Audio Engine Firmware Updates|T1 ToneMatch® Audio Engine Firmware Updates]] - includes bug fixes

[http://bose.infopop.cc/eve/forums/a/tpc/f/8221072574/m/5791097384 T1® and L1® Firmware]  

*[http://www.bose.com/controller?event=VIEW_PRODUCT_PAGE_EVENT&product=t1_audio_engine T1 ToneMatch® Audio Engine - Official Bose Page]

*[[Presets (T1 ToneMatch)|T1 ToneMatch® Presets]] (includes downloadable lists with cross-references to Version 2 presets).

*[http://www.bose.com/controller?event=VIEW_STATIC_PAGE_EVENT&url=/musicians/popups/l1_m2_presets.jsp T1 ToneMatch® Presets] (official version - opens in tiny window).

*[[T1 ToneMatch® Audio Engine / FAQ]]

*{{:T1 ToneMatch® Audio Engine / Video}}

This is an online simulator that lets you interact with all the controls on the {{T1}}  

|}

== Documentation  ==

*{{T1 Manual}}

Your first adjustment for any input to your {{T1}} is the Trim setting. The exact position of the Trim will vary depending on signal strength of your input source. The correct setting for any particular source may be different from your other sources.  

[[Image:T1TrimPots.png|T1® Trim Pots]]

 

 

 

 

 

 

 

 

== Inputs ==

 

The following notes about Channels 1,2,3, 4/5 are from Hilmar-at-Bose spread out over several posts in [http://bose.infopop.cc/eve/forums/a/tpc/f/7521050644/m/5031050644?r=2981027944#2981027944 Information on the new T1 ToneMatch audio engine]  

 

The Tip-Sleeve inputs are high impedance so you can plug in an acoustic guitar with passive piezo pickup or any other passive instrument directly without a pre-amp. Input impedance on Channels 1,2,3 is about 1 MOhm. Channels 4 and 5 have an input impedance of about 10 kOhm.  

 

[http://bose.infopop.cc/eve/forums/a/tpc/f/7521050644/m/5031050644?r=7571094084#7571094084 Bill-at-Bose gives us the following insights into Channels 1,2,3 and 4/5]  

 

{{T1 icon}}{{Model I icon}}{{Classic icon}} When using the Classic or Model I <ref>Hilmar-at-Bose talks about setting inputs [http://bose.infopop.cc/eve/forums/a/tpc/f/7521050644/m/3041050644?r=2991039944#2991039944]</ref> The T1 has more input capability then the Model 1,s so you should be able to use the T1 as the only control for your system. We have a recommended trim setting for connecting the T1 to a Model 1 input Ch 3 or Ch 4  

The {{T1}} controls are a heck of a lot faster then the R1 controls. There is no perceivable lag.  

=== Input setting recommendation now '''3''' ===

MikeZ-at-Bose wrote<ref>MikeZ-at-Bose talks about [http://bose.infopop.cc/eve/forums/a/tpc/f/7521050644/m/3041050644?r=7271069184#7271069184 the input setting on the Model I or Classic Power Stand with the T1®] </ref> Bill-at-Bose and I have revisited this.  

For these conditions:  

*T1 going into model I/Classic into Ch 3/4  

*proper gain staging required on the T1 itself

I'm going to revise the original recommendation of '''2''' for Ch 3/4 to '''3''' - under the above conditions.  

This will give you the same gain going into the L1 Classic/model I as if you were going through the digital ethercon input on a model II.  

If you are using the remote on your M1/CL, then you will need to compensate a bit. If you running the remote master volume at max, then stick with '''2'''on Ch 3/4. I would recommend against running the master volume below 12 o'clock when using a T1.  

MikeZ <!--

-->  

 

Excerpt from the {{T1}} Manual - page 20 - Note: this recommended input setting is now '''3'''. See the note above.  

 

 

 

{{:T1 ToneMatch® Audio Engine / Aux}}

=== Overview from Hilmar-at-Bose  ===

{{:T1 ToneMatch® Audio Engine / Effects}}  

=== Compressor  ===

 

 

Please see [[L1® T1 ToneMatch® Audio Engine / FAQ#Effects|Effects]] <!-- Labeled Section Transclude  

-->  

 

 

 

 

 

On the {{T1}} they're different, but are designed to the same standard as the {{Classic}} preamps.

The difference comes in how we get there. I'll try not to go into horribly boring detail. The name of the game is trade offs, and in the end the design constraints dictate the *best* type of circuit used for *this* particular situation. Here are a couple of the many factors that dictate the differences:

Gain structure. The internal components of the {{T1}} are different that the {{Model I}} / {{Classic}} and need to have signals fed to them in certain ways. Different designs are more suited to the levels needed than others.  

Physical layout of the circuit on the board. There are four channels in a tighter space in the {{T1}}. Again, certain designs lend themselves to be better at this than others.  

After evaluating all of the factors that go into the design of a preamp we are using another proven circuit that relies more on discrete transistors rather than op-amps. It fits our needs better for this design situation. The preamp design itself is not necessarily any better or worse. There are *many* ways to skin the cat of preamp design to achieve a desired performance.  

Will it sound different? No...I certainly cannot hear a difference playing through it. Can't measure one either.  

Hope this sheds some light on it.  

MikeZ<ref>MikeZ-at-Bose [http://bose.infopop.cc/eve/forums/a/tpc/f/7521050644/m/3651093054?r=1711028154#1711028154 talks about the preamps in the L1 Model I and the T1® ]</ref>

[[Image:T1PreampsOut.png|thumb|right|image of T1® rear pointing to Preamps out]] The preamp outputs are before everything except the Trim control in the signal chain. - MikeZ-at-Bose<ref>MikeZ-at-Bose -[http://bose.infopop.cc/eve/forums/a/tpc/f/7521050644/m/5891048364?r=3141068364#3141068364  T1® Preamp Out Muting]</ref>. This means that these are post-trim, and nothing else (e.g. Muting) has any effect on the signal at the preamp outs.  

=== Presets  ===

*[[Presets / ToneMatch® / Downloads|ToneMatch® Presets for the T1®]] (downloadable presets that are not installed at the factory)

*[[Presets (T1 ToneMatch)|T1 ToneMatch® Presets]] (includes downloadable lists with cross-references to Version 2 presets).

== Tuner  ==

== USB (Computer Interface)  ==

{{:T1 ToneMatch® Audio Engine / USB}}  

 

 

The {{T1}} comes with a really nice Pro Ethercon cable, with robust metal connector shells and an almost memoryless 18' black cable.  

 

 

Any CAT5 (or CAT5e, CAT6, or CAT7) cable will work just fine without any degradation at least initially. The downsides are that most ethernet cables don't coil particularly well and that the connectors wear out over time. After a a few hundred uses you may notice the occasional drop out, at which point it's time to get a new one.  

=== Convert Cat-5 Cat-6 to Ethercon  ===

[http://www.neutrik.com/content/products/detail.aspx?id=210_1267482192&catId=CatMSDE_misc NE8MC EtherCon® Cable Connector Carriers] (retrofit over an existing RJ-45 Connector).  

Example vendor http://www.fullcompass.com/product/255589.html

==== Up to 50 feet ====

A technical note from Bill-at-Bose <ref>Bill-at-Bose talks about [http://bose.infopop.cc/eve/forums/a/tpc/f/7521050644/m/5711086844?r=3931015654#3931015654 cable lengths]</ref>  

A 33 or 50 footer will not cause any problems, either with the digital audio (ones and zips) or the power.  

The technical reason follows, for those who are interested&nbsp;: A 24 gauge wire (the size typically used in ethernet cables) has about 2.5 Ohms of resistance per 100 feet. The T1 draws roughly 1/4 Amp on each of two supply wire pairs (+/-18V nominal).  

For a 50 foot run, each pair of wires (made up of a plus and minus lead) totals 100 feet. A quarter Amp of current across 2.5 Ohms gives, per Ohm's law, a voltage drop of less than one volt (V=IR = 0.625 Volts). Because of the margin we built into the system, it can handle this voltage drop easily.  

In fact, although we don't recommend it and can't guarantee it, the digital audio has been tested up to 100 feet in average conditions (for example, no undervoltage on the AC supply at the gig), and quite happily continued to make music.  

==== Over 50 feet ====

Bill at Bose stated you could run 50' of ethernet cable no problem at all. Success at distances longer than that would start to depend on outside factors, for instance the voltage of your power source.

 

 

 

 

5 foot of cord from the T1 to the switching power supply, and a removable 6 foot cord from the power supply to the wall. This is very similar to a laptop power supply.  

== Microphone Stand Bracket (optional)  ==

{{:T1 ToneMatch® Audio Engine / Microphone Stand Bracket}}

== Display Panel  ==

=== Outdoors ===

Q: Please talk about using the {{T1}} outdoors. Will I be able to see /read the display? A: Should be no problem. The LCD display on the T1 is "transflexive". In dark conditions the blue backlight will shine through the "transmissible" part so everything is easily visible. In bright sunlight, it becomes "reflexive" just like a piece of paper. The backlight may wash out (i.e. it will not look really blue anymore) but it's still clearly visible. <ref>Hilmar-at-Bose talks about the [http://bose.infopop.cc/eve/forums/a/tpc/f/7521050644/m/5031050644?r=4091059454#4091059454 transflexive display on the T1®]</ref>  

 

In 23 years at Bose, the {{Model II}} and {{T1}} are the most lovingly designed products I have ever had the fortune to work on. More care by more experienced people went into this than anything I've been involved in.  

The most minute details were studiously created. As one tiny but important example, a propriety light pipe was designed so that the light from volume knob indicators smoothly wrapped around the knob from top to side, giving the musician a clear indication of volume from any angle. The color and intensity of the light was carefully designed so that it was visible in an extraordinarily wide range of stage lighting conditions.  

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