Carvin H400 Owner's Manual

IN

1

2

3

F

INPUT A

LEVEL

RIGHT A

OUTPUT

AMPS

IN

1

2

3

F

LEFT A

AUX IN

IN

1

2

3

F

RIGHT B

IN

1

2

3

F

LEFT B

INPUT B

LEVEL

PHONES

LEVEL

MONO

OUT

INPUT

INPUT

INPUT

INPUT

CH 2

CH 3

CH 4

PHONES

OUTPUT 1

R

L

R

L

MONO
AUX IN

R

L

R

L

CHANNEL 1

A RIGHT

A LEFT

B RIGHT

B LEFT

SIG
PK

REAR AUX
OUTPUT 1

RECEIVING INSPECTION

INSPECT YOUR H400 FOR DAMAGE which may have occurred during shipping. If

any damage is found, please notify the shipping company and CARVIN.

SAVE THE CARTON & ALL PACKING MATERIALS. In the event you have to re-ship
your unit, always use the original carton and packing material. This will provide the
best possible protection during shipment. CARVIN and the shipping company are not
liable for damage caused by improper packing.

SAVE YOUR INVOICE. It will be required for warranty service if needed in the future.

SHIPMENT SHORTAGE. If you find items missing, they may have been shipped
separately. Please allow several days for the rest of your order to arrive before inquiring.

RECORD THE SERIAL NUMBER on the enclosed warranty card for your records.
Keep your portion of the card and return the portion with your name and
comments to us.

USA customers register online at: www.carvin.com/registration
All other countries register online at: www.carvinworld.com/registration

CARVIN ENGINEERING DATA H400 FOUR CHANNEL HEADPHONE AMP

34

H400

FOUR CHANNEL

.

.

HEADPHONE AMP

2

PHONESAUX IN

INPUT A

010

5

1

010

5

010

5

INPUT B INPUT A

010

5

010

5

010

5

INPUT A

010

5

010

5

010

5

INPUT A

010

5

010

5

010

5

INPUT B INPUT B

LEVEL

PHONES

INPUT B

OUT

AUX IN

MONO

PHONESAUX IN PHONESAUX IN PHONESAUX IN

PKSIG

AUX IN

MONO

OUTPUT

LEVEL

PHONES

OUT

AUX IN

MONO

SIG

AUX IN

MONO

OUT

LEVEL

PHONES

OUT

AUX IN

MONO

PKSIG

AUX IN

MONO

OUTPUT

LEVEL

PHONES

OUT

AUX IN

MONO

PKSIG

AUX IN

MONO

OUTPUT

POWER

76-02424B 012304

Congratulations on your purchase of the CARVIN H400 Four

Channel Headphone Amp. Your unit has been engineered and
made in the U.S.A. using only high quality electronic components
and uncompromising workmanship.

The H400 will drive a total of eight pairs of headphones to their

maximum output with excellent clarity. The H400 features four
independent output channels each with it’s own mix of 3 stereo
sources: INPUT A, INPUT B and the AUX IN for that channel.

When using the unit in MONO, a total of 4 main inputs plus 2 aux
inputs for each channel are available. The signal routing flexibility
of the H400 makes it useful as a distribution amp for installation
applications.

Use caution with the H400. It is capable of high levels which may
cause hearing damage.

c

FREQUENCY RESPONSE: 5Hz TO 40kHz, -0.5dB (INPUT A or B)

20Hz TO 40kHz, -0.5dB (AUX IN)

OUTPUT POWER: 2W @ 40Ω

800 mW @ 150Ω
240mW @ 600Ω

THD+N: 20Hz TO 20kHz, 0.01% @ 90% POWER

INPUT IMPEDANCE: 20KΩ BAL., 10KΩ UNBAL.

OUTPUT IMPEDANCE: 11Ω or greater

INPUT to OUTPUT GAIN: 20dB

S/N RATIO: >100dB

STEREO INPUTS A & B: XLR BALANCED,

1/4” BALANCED or UNBALANCED
with GROUND LIFT

FRONT AUX INPUTS: 1/4” STEREO,

MONO switch

OUTPUTS: 1/4” STEREO front and rear, MONO switch,

SIGNAL and PEAK indicators

POWER REQUIREMENTS: 4VA, 90-255VAC, 50/60Hz SWITCHING SUPPLY

FUSE: INTERNAL 1.5A FAST BLOW

DIMENSIONS: 1.75”H x 19”W x 5”D

SHIPPING WEIGHT: 7 LBS

H400 SPECIFICATIONS

BLOCK DIAGRAM

REAR PANEL

1-800-854-2235

www.carvin.com

AUS

H400

HEADPHONE AMP

SERIAL NUMBER

90-250 VAC

INTERNAL FUSE

10 VA 50-60Hz

CH 1

CH 2

CH 3

CH 4

AUX OUTPUTS

LEFT

B

RIGHT

B

LEFT

A

RIGHT

A

GND
LIFT

GND
LIFT

MADE IN THE

34

H400

FOUR CHANNEL

.

.

HEADPHONE AMP

INPUT A

010

5

010

5

010

5

INPUT A

010

5

010

5

010

5

INPUT B

LEVEL

PHONES

INPUT B

OUT

AUX IN

MONO

PKSIG

AUX IN

MONO

OUTPUT

LEVEL

PHONES

OUT

AUX IN

MONO

NO

POWER

12

14

14

13

13

FRONT PANEL FEATURES:

1. AUX INPUT JACK

Receives stereo or mono inputs from sources to be heard only at
the related PHONES output. Adjust the input level with the LEVEL
PHONES control then adjust INPUTs A&B accordingly.

2. PHONES OUTPUT JACK

Plug headphones into this jack. Start with the LEVEL PHONES at a
low setting to avoid damage to your hearing or to headphones.

3. PHONES LEVEL CONTROL (AUX IN)

Adjusts the output volume heard at the PHONES jack and the input
level from the AUX IN jack.

4. INPUT A CONTROL

Adjusts the volume of INPUT A going to the LEVEL PHONES heard
at the PHONES jack for the related channel 1-4.

5. INPUT B CONTROL

Adjusts the volume of INPUT B going to the LEVEL PHONES heard
at the PHONES jack for the related channel 1-4.

6. SIG LED

Shows when a signal is present at the PHONES jack output.

7. PK LED

Shows when the output signal of the channel is being overdriven.
Reduce the PHONES LEVEL control if the LED lights.

8. MONO AUX IN SWITCH

Pressing the MONO AUX IN switch IN causes the AUX IN jack to
receive signal from the TIP conductor only, sending the same
signal to Left and Right.

9. MONO OUT SWITCH

Pressing the MONO OUT switch IN sends the same MONO signal
to both the Left and Right sides of the PHONES jack.

10. POWER

Push this switch to the UP position to apply power to the unit.
The POWER LED will display to show that the H400 is on.

REAR PANEL FEATURES:

11. LINE CORD:

The exclusive built-in auto switching power supply allows you to
connect any voltage from 90 to 255v 50-60Hz. Use a 3-conductor
line cord for maximum safety. If the H400 is to be plugged into a
2-prong outlet, use a quality 3-to-2 prong grounded adapter. Do
not defeat the grounding pin of your AC line cord.

12. AUX PHONES OUTPUTS 1-4:

These jacks are connected in parallel with the corresponding
PHONES jacks on the front panel. When using both the front and
rear outputs of a channel, use headphones of similar
impedances. Using headphones of different impedances on the
same channel may result in radically different volume levels.

13. XLR AND 1/4” INPUT JACKS A&B:

Connect your inputs here. Adjust the levels at each output
channel with the INPUT A and INPUT B controls. If MONO
sources are being monitored, use the MONO OUT switches on
the front panel. A total of four MONO inputs can be used in this
case.

14. GROUND LIFT SWITCH:

This switch lifts the grounds on the inputs and outputs when
pressed IN. This is useful for eliminating ground loops.

11

8

7

6

FRONT PANEL

9

13

13

1

3

2

4 5

10