3.Input Channel section continued.

7.GAIN CONTROL

The GAIN control adjusts the gain of the channels high gain microphone pre-amplifier. This pre-amplifier is designed for professional low impedance microphones. Monitor the gain level with the PEAK LED. If the LED is constantly lit, decrease the amount of gain. If distortion is present, decrease your gain until it is eliminated. The GAIN control is also the level control for the LINE IN. Using both MIC IN and LINE IN inputs at the same time is possible with some deterioration in common mode rejection. To set the gain for optimum signal-to-noise, audition your audio source and turn the GAIN control up until the PEAK LED starts to flash. The PEAK LED should not be constantly lit but occasional peaking is OK. Repeat this with each channel. Different mics will require different levels of GAIN.

8. PHASE SWITCH

The PHASE switch reverses the polarity of the input signal to compensate for phase differences due to microphone placement or incorrect wiring of input cables. This switch should be released (up position) for normal operation.

9. TAPE SWITCH

The TAPE switch provides the Dual In-line channel format. It should be viewed as an input tape switch. In the up position, the MIC and LINE inputs are feeding the channel’s EQ, sends and fader with assignments. The TAPE IN goes to the TAPE 5-6 and TAPE (AUX 7-8) switches. In the down position, the routing is “flipped” where the TAPE IN has the EQ, sends and fader with assignments and the mic line inputs are routed to the TAPE 5-6 and TAPE(AUX 7-8) switches. In a recording situation, the switch up position provides the tracking mode and the down posi-

tion provides the mix down mode.

7

 

 

 

GAIN

PHASE

10. LOW CUT SWITCH

 

 

 

 

 

The LOW CUT switch is a 12dB/Octave high pass filter with a corner frequency of 75Hz. Using the LOW CUT feature helps elim-

5

55

TAPE

inate unwanted low frequencies. Use the LOW CUT filter to reduce “rumbling” and “boom” noises picked up from mic stands

 

 

0

 

or hollow body acoustic/electric guitars. This filter can also help tighten bass response by turning up the LOW EQ control while

 

 

 

 

 

using the LOW CUT switch.

-15

+15 LOW

 

HIGH

CUT

 

 

11. EQ HIGH CONTROL

 

0

 

 

 

HI

The High control is an active shelving type of tone control with a corner frequency of 12KHz. The ±15 dB boost and cut pro-

 

 

 

 

MID

-15

+15

 

vides an overall 30 dB range of powerful EQ control.

 

 

 

 

8

9

10

11

12

12. EQ HI MID LEVEL AND FREQUENCY CONTROLS

The HI MID level and FREQ controls comprise a semi-parametric or sweepable mid equalizer. The level control provides ±15 dB boost and cut with the middle position (center detent) at OdB. The frequency being manipulated is controlled by the fre- quency control. The FREQ control sets the center frequency for this “bell curve” designed tone control. The HI MID FREQ con- trol ranges from 500Hz to 5KHz. Cutting and boosting frequencies improperly can cause an “un-natural” sound to your vocals or instruments. Only use these controls to overcome the limitations of the Microphones and room effects to achieve a natural sound for the entire performance or recording.

1k

8002k

FREQ

200 5k

0

LOW

MID

-15 +15

500

2001k

FREQ

80 2k

13

13. EQ LOW MID LEVEL AND FREQUENCY CONTROLS

The LOW MID level and FREQ controls comprise a semi-parametric or sweepable mid equalizer. The level control provides ±15 dB boost and cut with the middle position (center detent) at OdB. The frequency being manipulated is controlled by the FREQ control. The FREQ control sets the center frequency for this for this “bell curve” designed tone control. The LOW MID FREQ control ranges from 80Hz to 2KHz. Cutting and boosting frequencies improperly can cause an “unnatural” sound to your vocals or instruments. Only use these controls to overcome the limitations of the microphones and room effects to achieve a natural sound for the entire performance or recording.

14. EQ LOW

The LOW control is an active shelving type of tone control with a corner frequency of 80Hz. The ±15 dB boost and cut provides an overall 30 dB range of powerful deep bass EQ control.

15. EQ IN SWITCH

In the down position, the EQ IN SWITCH routes the audio through the channel’s EQ (High, both Mid’s, and the low controls). In the up position, the EQ IN SWITCH bypasses the EQ section but leaves the LOW CUT switch active in the circuit. The EQ IN SWITCH is great for comparing the “flat” to EQ sounds.

LOW

0

EQ I N

-15 +15

5AUX

0

1 10

 

5

PRE

 

 

 

1-2

 

 

 

5

0

2 10

 

 

3

 

0

10

 

4

 

 

 

5

PRE 3 - 4

0

10

 

5

 

 

 

 

 

5

6

0

10

 

 

 

 

5

TAPE 5 - 6

0

10

7/8

5 TAPE

14

15

16

17

16. CHANNEL AUX 1 & AUX 2 PRE SENDS

 

 

 

 

The AUX 1 & AUX 2 controls are pre EQ, pre mute and pre fader sends. These controls are designed as uninterrupted moni-

0 10

 

 

 

 

 

toring feeds for stage monitor or in studio tracking. The AUX 1- AUX 2 PRE signal is post INSERT in order to get the benefits

C

 

 

 

 

 

 

 

of an inserted channel effect such as a compressor.

 

PRE

 

FAD

w/EQ

 

7 PAN 8

17. AUX 3 - 4 PRE SWITCH

 

 

 

 

The Aux 3 - 4 PRE switch in the up position places AUX 3 and AUX 4 send controls post EQ and post fader (working the same as AUX 5 and AUX 6). In the down position AUX 3 and AUX 4 send controls, are pre EQ, pre mute and pre fader (working the same as AUX 1 and AUX 2).

9

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Carvin SL40C manual Gain Control, Phase Switch, Tape Switch, EQ HI MID Level and Frequency Controls, EQ in Switch

SL40C specifications

The Carvin SL40C is a cutting-edge guitar amplifier that showcases the innovative spirit of Carvin, a company known for its high-quality sound equipment. The SL40C is designed specifically for guitarists seeking a versatile and powerful amp that can meet the demands of various musical styles, from rock and blues to jazz and country.

At the heart of the SL40C is its all-tube design, which provides a warm, rich tone that digital amps often struggle to replicate. The amp features a 40-watt output, making it suitable for both practice sessions and live performances. One of the standout characteristics of the SL40C is its dual-channel configuration, allowing players to switch between clean and overdriven tones effortlessly. This feature enables guitarists to achieve a wide range of sounds, from pristine cleans to creamy distortion.

The amp is equipped with a 12-inch speaker that delivers a robust sound with clarity and depth. The cabinet is designed to enhance the tonal characteristics, providing a balanced response whether playing clean chords or heavy riffs. The SL40C also has built-in reverb, adding depth to the sound and allowing musicians to create a more ambient atmosphere during performances.

One of the key technologies incorporated in the SL40C is its unique tone shaping controls. The amp includes a three-band EQ (bass, middle, treble) that allows players to sculpt their sound to fit any musical style. Additionally, the presence control enhances high frequencies, giving players the ability to achieve a bright and cutting tone.

Another impressive aspect of the Carvin SL40C is its portability. Weighing in at a manageable level, the amp is easy to transport, making it a favorite among gigging musicians who require a reliable and powerful solution without compromising on sound quality.

Durability is also a top priority in the design of the SL40C. The rugged construction ensures it can withstand the rigors of travel and live performances, while the classic aesthetic appeals to players who appreciate a vintage look.

In conclusion, the Carvin SL40C shines as a versatile and powerful amplifier capable of delivering exceptional sound quality across various musical genres. Its all-tube design, dual-channel functionality, and effective tone-shaping controls make it an indispensable tool for guitarists looking to elevate their sound. Whether in the studio or on stage, the SL40C continues to impress with its rich tones and robust features.