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  Telonics TCA-500 Combo Amp

 

 

27 

 

PB-009289 Rev _ PRELIMINARY 

TCA-500

 

T

HERMAL 

M

ANAGEMENT 

S

YSTEM

 

CONTINUED

 

F

AN

-W

EAR 

B

ALANCING

 

In order to further minimize the noise produced by the fans, and to prolong the life of the fans, 
the fans are controlled individually.  Whenever the temperature of the amplifier is below the Low 
temperature threshold, one of the fans is turned off, and one fan continues to run at the minimum 
speed.  In most environments, when the amplifier is idle or played at lower levels, a single fan is 
adequate to maintain a desirable temperature within the amplifier.  Whenever the amplifier 
temperature rises above the Low threshold, the second fan is turned on in addition to the first 
one; therefore, both fans will be running, initially at the minimum speed.  Should the temperature 
of the amplifier continue to rise, the speed of both fans will be increased accordingly; if the 
temperature of the amplifier drops, the speed of both fans is reduced accordingly.  If the 
temperature of the amplifier again drops below the Low threshold, then the second fan is turned 
back off.  The fan which will ‘always be On’ is alternated every time that the AC mains power is 
cycled.  Thus, in the long run, the wear on the fans will be balanced. 
 
 

S

TUDIO 

(N

O 

F

ANS

)

 

M

ODE

: 

T

EMPERATURE 

I

NDICATION

 

In the Studio mode, the power amplifier is switched off and the fans are not turned on. In this 
mode, the LEDs blink a special pattern to alert the user to the fact that the unit is in this mode 
and the power amplifier if off, and to indicate the temperature of the amplifier.  The blink pattern 
is three short blinks (winks) followed by a short pause, and then repeat. 
 
The amplifier’s temperature is indicated on the front panel via the status LEDs: 
 

Blue 

Fan controller power is On 

Green winking 

Temperature is below the Medium temperature 
threshold 

Green and Yellow winking 

Temperature is above the Medium temperature 
threshold 

Green, Yellow, and Red winking 

Temperature is above the High temperature 
threshold 

  

Содержание TCA-500

Страница 1: ...User Manual Telonics TCA 500 Combo Amp 2014 Telonics Inc All Rights Reserved PB 009289 Rev _ PRELIMINARY 2014 04 11...

Страница 2: ...o reduce the risk of electric shock do not remove from cabinet No user serviceable parts inside Refer Servicing to qualified service personnel WARNING To prevent electrical shock or fire hazard do not...

Страница 3: ...y different instruments and as such its controls cover a wider range of options than previously offered to the professional musician Accordingly for any given instrument the controls may feel more sen...

Страница 4: ...foot pedal Balanced XLR Direct stereo output for stage and studio use Includes ground lift switch Analog modeling for Direct Out for live venue or studio use with preset modeling Buffered tuner outpu...

Страница 5: ...lso affects the level for the Pre EQ Pedal insert To Send jack and the maximum level to the EFX Send jack both of which are on the rear panel Start at 3 or 4 and adjust as needed It s important to und...

Страница 6: ...et to 1 your volume pedal set to maximum and Input Gain control set to 1 play some nice big chord groups slightly harder than you would normally play slowly increase the Input Gain control until the O...

Страница 7: ...nd will sound like more of a thud and have a muted quality For most people that is too much bass boost so back off the control counterclockwise slightly until the sound is once again clear and clean M...

Страница 8: ...mal range of the fret board you would use As you are doing this tweak the Mid Freq control up and down around the 400 to 800 region it s handy to have a friend rotate the Mid Freq control as you play...

Страница 9: ...ng way Start at 12 o clock Clockwise yields a Mooney bright aggressive sound counter clockwise gives you a mellow darker tone The Blend control is initially one of the most confusing settings to under...

Страница 10: ...hen TBro is active The Foot Switch connector on the rear panel can be used to turn the TBro function Off and On if the TBRO pushbutton switch on the front panel is pushed On in If either this switch o...

Страница 11: ...e amount of reverb introduced The built in reverb signal is added to the signal returning from the EFX Return jack that feeds the Wet side of the DRY WET Fader This means the DRY WET Fader must have a...

Страница 12: ...l This is adjustable to drive effect inputs from 30dB to 4dB the 4dB setting generates the highest output It s very important to ensure the TCA 500 Overload LED just starts to blink BEFORE the effects...

Страница 13: ...cts requires complex mathematics and powerful processors and time to perform the calculations This introduces a small delay as the signal passes through the effects processor this delay is called late...

Страница 14: ...arallel mode use it is essential that the effects processor is not allowed to pass an unaffected or straight through signal If this occurs the true thru signal will mix with the latency delayed thru s...

Страница 15: ...vel inputs A very handy capability when you walk into a new venue cold and have no idea what the sound person might have to work with The DO in the TCA 500 is analog modeled to deliver to a flat respo...

Страница 16: ...nch TRS cable is supplied with the TCA 500 Some CD players still utilize separate RCA jacks and therefore require a dual RCA plug male to inch TRS plug cable These are readily available to most home e...

Страница 17: ...g quality headphones such as Sony model MDR 7505 Tuner Out Buffered output so it will not load down the pickup or the rest of the signal chain nor will it allow noise from the tuner to get back into t...

Страница 18: ...does not affect the XLR Direct Out or the Headphones When the PA ON switch is Off the cooling fans are disabled to minimise noise for use in a studio Hint If you ever find yourself at a live gig tryin...

Страница 19: ...s power cord socket and below the Off On switch Use a small screwdriver to release the spring latch on each side of the drawer to release the fuse drawer WARNING Before checking this fuse ALWAYS ensur...

Страница 20: ...this connection DO NOT insert any device into this socket other than the IEC lead provided If any liquid is spilled on the combo in this area UNDER NO CIRCUMSTANCES should the combo be used and the AC...

Страница 21: ...m necessary in properly built equipment but might be needed sometime Leave in the Norm In position unless needed EFX Send Level This adjusts the level to your effects unit This will allow you to have...

Страница 22: ...the same function as the Tuner Out jack on front panel It is designed for internal feed to a rack mounted tuner Both Tuner Outs front and rear may be used simultaneously The output impedance is appro...

Страница 23: ...gnal coming in on the TS plug will be amplified through the speaker PRE OUT PA IN jacks rear Theses jacks allow two TCA 500 combo s to be slaved together Connect a lead from the Pre Out of the Master...

Страница 24: ...nserted before the tone control and effects section If a inch plug is inserted into the Pre Out or Pre In jack the normal link between the jacks is broken With the Input Gain control optimized and wit...

Страница 25: ...his input can be used in one of three ways i A CD MP3 Player connected to the Aux Input will allow tracks to be played for practice and small gigs ii An additional effects processor output can be retu...

Страница 26: ...Green Yellow and Red LED s and the fan speed for the specified temperature ranges Notes Wink short blink once per sec ON on solid FAN SPEED OUT OF SPEC INDICATION The speed of the fans is measured co...

Страница 27: ...erature of the amplifier drops the speed of both fans is reduced accordingly If the temperature of the amplifier again drops below the Low threshold then the second fan is turned back off The fan whic...

Страница 28: ...7505 headphones are recommended for best fidelity Can I drive speakers with the headphone jack No only use it for headphones It was designed for headphones The preamp will deliver up to half a watt p...

Страница 29: ...e Aux In Level control Can I safely run phantom power into my Direct Out circuit While it is not necessary nor a good idea to run phantom voltage into the Direct Out connector it is designed to withst...

Страница 30: ...is positioned on the lower right corner of the front panel A inch TRS cable is required to connect the TCA 500 side of the Control Unit to the Foot Switch jack on the rear panel of the TCA 500 This c...

Страница 31: ...the left side of the Control Unit with the TRS plug on the other end fully inserted into the Foot Switch jack on the rear panel of the Lexicon MX 200 You can determine whether an effects engine in th...

Страница 32: ...a little adjustment can change a lot MAXIMUM CLARITY SETTINGS The EQ settings shown above are suitable as a starting point for users who desire a very crisp and sharp setting with very high definitio...

Страница 33: ...obscure subtler aspects you re playing The interaction of compression or reverb in this range further compounds the problem EQ should almost always be used as a subtractive device That means use it pr...

Страница 34: ...st it slightly in the frequency I wish to affect I then lower the high and low EQ till I achieve the midrange sound I am looking for A little goes a long way Practice practice practice Watch out for t...

Страница 35: ...odized Aluminum Front Rear Panel Markings Lexan Surface Cabinet The cabinet is made from multi ply Baltic Birch 12mm 15mm thick continuous panels that are dove tailed together for maximum strength The...

Страница 36: ...5 V ac and 230Vac settings 8 amp 250Vac 5x20mm Ceramic Slow Blow fuse Auxiliary switched AC power outlet 115Vac and 230Vac setting 2 amp 250VAC 5x20mm glass Slow Blow fuse Preamp Gain 1kHz sine 58dB t...

Страница 37: ...Telonics TCA 500 Combo Amp 37 PB 009289 Rev _ PRELIMINARY MECHANICAL OUTLINE DRAWINGS...

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