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a Limiter “clamps” the higher level signals only, thereby allowing you to set a higher overall Vol-
ume level without creating excessively high “peak” signals.

A small time delay is built into the Limiter to prevent it from “riding” the low frequencies, causing 

an audible “pumping” effect. Using any limiter or compressor will affect your sound, so you should 

adjust it by ear. A red LED is provided to indicate when the Limiter is taking affect. The higher 
you set the Gain/Limit control, the more the Limiter will clamp the signal, and the longer the LED 
will light. Excessive use of the Limiter will add a distorted sound to your instrument. Some bass 

guitars with weak output signals will not fire the limiter.

 

 

Setting the Limiter

 

Turn down the Gain/Limit, and Volume controls on the amp. Make sure the Limit Switch is pushed 

IN. Then turn the volume and tone controls on your bass all the way up and also set any effects to 
as high an output level as you will use. Now play the instrument aggressively, and turn the Gain/

Limit control up until the red LED indicator light flashes on. Now increase the Volume Control 

until you have the level you wish to play at. To have a more “compressed” signal increase the Gain/
Limit control as needed, and balance this by decreasing the Volume control to a proper overall 
level. Once this knob is set, it generally will not need to be adjusted until you change instruments 

or effects. To play without the Limiter you can either press the Limit Switch to the OUT position, 

or set the Gain/Limit control low enough so that the red LED never lights. 

RED LED Limiter Indicator

 

used with the Gain/Limit control, it lights when the input signal crosses the threshold of the limit 
circuit, and limiting is taking place. It might also light when the Limiter is switched off, but the LED 
can be ignored. The circuit is not limiting. 

Enhance Control

 

This tone-shaping control changes the instruments harmonic effect, giving the bass a more 

identifiable, penetrating tone. When set to the minimum level, it is effectively out of the circuit. 

As you advance the knob, the sound tightens up, boosting the very low, upper middle and, high 
frequencies, while adding a dip in the lower middle frequencies. This brings out the fundamental 
notes by reducing frequencies that mask them, and it enhances the high-end transients, similar to 
techniques often used for recording bass in the studio. The effect is especially noticeable when 
“slapping” on the bass guitar, and becomes more “transparent” as the control is turned to maxi-
mum. Adjust this control to taste.

Содержание Bass Amplifiers

Страница 1: ...Thunderfunk Bass Amplifiers OWNERS MANUAL...

Страница 2: ...u won t know until you experience it Thunderfunk TFB800 B2 All of our products are designed to be serviceable in a professional application Everything we do we do for a reason and that reason is eithe...

Страница 3: ...id state designs made famous by such classic designs as the Acoustic 360 and the AMP BH 420 They use the largest high quality power transformers that can be packed into two rack spaces Half the weight...

Страница 4: ...d LED lighting to indicate muted operation Since the second input tuner out jack doubles as an input it is also muted by the Mute Switch Gain Limit with LED Indicator This control sets the preamp gain...

Страница 5: ...essed signal increase the Gain Limit control as needed and balance this by decreasing the Volume control to a proper overall level Once this knob is set it generally will not need to be adjusted until...

Страница 6: ...k Bass Control This tone control is a shelving type providing a boost or cut of 15dB starting at 80 Hz Frequen cies above this are not really affected but frequencies below are boosted uniformly The c...

Страница 7: ...ing in the dead spot so common on many necks the one about way up on the G string The top three bands control frequencies where your sound starts to get defined as human hearing starts to sharpen The...

Страница 8: ...peaker cabinet Treble Control This tone control is a shelving type providing a 15 dB of boost or cut at slope starting at 2000 Hz which is above the fundamental notes of even a standard guitar Frequen...

Страница 9: ...to a punchy bass tone Turned down you get a deep full bass tone and turned up you get a tight punchy bass tone It is suggested you start with the Timbre at the 12 o clock setting set the EQ for the sp...

Страница 10: ...that once seemed so perfect don t work well in a different room While a Thunderfunk is often used flat with no additional EQ the sound next to the cabinet WILL be different than it is in other places...

Страница 11: ...reflected at this jack Power This switch turns the system on or off There is a Green LED to indicate power is applied and the fuse is good If the indicator light does not come on either the AC power c...

Страница 12: ...p 1 all the EQ controls the Enhancer and the Timbre controls but before the front panel Volume next to the power switch the Effects Loop 2 and the Power Amp Signals from this XLR are therefore fully c...

Страница 13: ...a mixing console or another preamp to the Power Amp input of the Thunderfunk This is where you would connect the special XLR to Phone jack cable mentioned in the Post EQ Balanced section of this manua...

Страница 14: ...holder You should always check the voltage selector switches whenever you re unsure of what the amp is set to They are located under the cover plate above the AC power cord connector NOTE You can ope...

Страница 15: ...fan on in the Auto position when the transis tors reach 140 degrees Fahrenheit On the TFB800 B2 the heat sinking had a major improvement and has reduced the operating temperature by about 20 degrees...

Страница 16: ...r cables for line connections will result in excess noise and is not recommended Speakers should be connected with high quality speaker cables The lower the gauge number the thicker the wire and the m...

Страница 17: ...ide mounted bumper feet will have to be removed to mount the rack ears On the TFB420 Serial numbers 100 299 the ears are attached by removing the top cover and then the side strap carry handle and att...

Страница 18: ...ns 17 wide x 3 high x 10 1 2 deep 19 wide with rack ears Weight 21 pounds or 9 5 kilograms Add 1 pound or 0 45 kilograms for rack ears TFB750 A Serial Numbers 1001 to 1199 AC Power 100 120 220 240 vol...

Страница 19: ...10 1 2 deep 19 wide with rack ears Weight 17 pounds or 7 7 kilograms Add 1 pound or 0 45 kilograms for rack ears TFB550 A Serial numbers 500 599 AC Power 100 120 220 240 volts 50 60 Hz Fuse Size 3AG...

Страница 20: ...550 watts into 4 ohms or 300 watts into 8 ohms 2 OHM OPERATION IS NOT RECOMMENED Dimensions Serial Numbers 100 199 17 wide x 3 high x 9 1 2 deep 19 wide with rack ears Serial Numbers 200 399 17 wide...

Страница 21: ...t malfunction first please make sure everything is plugged in correctly and your connecting cords are good Some warranty restrictions apply The amp must be purchased from an authorized dealer and the...

Страница 22: ...Thunderfunk Bass Amplifiers www thunderfunk com...

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