Trends Audio BA-10 Lite Manual de usuario

Trends BA-10 Bi-amp User Guide

Trends BA-10

Bi-amp Audio System

Version 1.0

USER GUIDE

Trends BA-10 Bi-amp User Guide

- 2 -

All rights in this publication are reserved and no part may be reproduced without the

prior written permission of the publisher. The contents of this publication are believed

to be correct at the time of going to press, but any information, specifications, products

or services mentioned may be modified, supplemented or withdrawn without further

notice.

Trademarks

Trends, Trends Audio, and ITOK are the trademarks owned by ITOK Media Limited

All other trademarks are the property of their respective owners.

ITOK Media Limited

Unit E, 13/F, World Tech Centre,

95 How Ming Street, Kwun Tong, Hong Kong.

Tel: (852) 2566 5810

Fax: (852) 2566 5740

Email: sales@TrendsAudio.com

http://www.TrendsAudio.com

Trends BA-10 Bi-amp User Guide

Table Of Contents

- 3 -

1. SAFETY INSTRUCTIONS.............................................................................- 4 -

2. INTRODUCTION..........................................................................................- 4 -

3. FEATURES..................................................................................................- 5 -

4. PACKING LIST ............................................................................................- 5 -

5. OVERVIEW..................................................................................................- 6 -

6. TECHNICAL NOTES(FOR PROFESSIONAL USER ONLY) ......................... - 10 -

6.1 Jumper Setting for Different Tube Series..........................................- 10 -

6.2 DC Bias Voltage Tuning ....................................................................- 10 -

7. HINTS & TIPS............................................................................................ - 11 -

8. SPECIFICATION........................................................................................ - 12 -

8.1 Specification of the Pre Amplifier Unit ..............................................- 12 -

8.2 Specification of the Amplifier Unit.....................................................- 13 -

8.3 Specification of the AC Adaptor ........................................................- 13 -

9. TROUBLESHOOTING................................................................................ - 14 -

10. ACCESSORIES ......................................................................................... - 14 -

11. REGULATORY COMPLIANCE ................................................................... - 15 -

12. CONTACT US............................................................................................ - 15 -

13. TRENDS BI-AMP & COMBO PACKAGE..................................................... - 16 -

13.1 Trends Hi-Fi Systems...............................................................- 16 -

13.2 Trends Desktop Hi-Fi Systems.................................................- 16 -

Trends BA-10 Bi-amp User Guide

Section 1 Safety Instructions / Section 2 Introduction

- 4 -

Please take note the following instructions before installing your Trends BA-10 Bi-amp

Audio System, they will enable you to get the best performance and prolong the life of

the product.

This unit must not be exposed to dripping or splashing water or other liquids. No

objects filled with liquid, such as vases, shall be placed on the unit. In the event, switch

off immediately, disconnect from the main supply and contact your dealer or us for

advice

Do not route the power cable so that it can be walked upon or damaged by other items

near it.

Electronic audio components have a running in period of around a week (if used

several hours per day). This will allow the new components to settle down; the sonic

properties will improve over this time

If you do not intend to use this unit for a long period of time, unplug it from main socket

To clean the unit, wipe its case with a moist, lint-free cloth. Do not use any cleaning

fluids containing alcohol, ammonia or abrasives. Do not spray an aerosol at or near

Trends BA-10 Bi-amp Audio System.

These units are not user serviceable, never attempt to repair, disassemble or

reconstruct the unit if there seems to be a problem. A serious electric shock could

result if this precautionary measure is ignored. In the event of a problem or failure,

please contact your dealer or us

Thank you for purchasing a Trends BA-10 Bi-amp Audio System

The package provides a complete

biamplification system. Many high end

speakers come with four sets of terminals on

the back, two red, and two black with each

pair of terminals supporting separate high

and low frequency signals to the correct

speakers. When supplied, the speakers will

usually have a ‘bridging plate’ across them

so that you only have to supply one cable to

the speaker. If you supply each pair of

terminals with a separate cable, from a

separate amplifier output, you will be

ensuring that each frequency gets a dedicated and consistent signal and this should

improve the sound quality.

Trends BA-10 Bi-amp User Guide

Section 3 Features / Section 4 Packing List

- 5 -

lCombine a pair of the award-winning Trends TA-10.2P Class-T Power Amplifier

and one set of Trends PA-10.1D Tube Headphone/Pre Amplifier (2 output).

lThe input impedance of the Trends TA-10 amplifier is about 50k ohm

lApplied a dual power supply to supporting two TA-10.2P power amps.

lProvide all functions of headphone amplifier, pre-amplifier and power amplifier.

lCompact design (mini-size & light weight), easy portable and setup for Hi-Fi room,

living room and sleeping room.

lEnsure each frequency gets a dedicated and consistent signal and this should

improve the sound quality.

lBuilt-in over-current protection and over-temperation protection design in the

power amplifier.

lUnique air-core inductor in power amplifier used (instead of magnetic-core) for

better sound.

lInnovative circuit design of low voltage hybrid (tube/transistor) & pure class-A

circuit pre-amplifier to provide the best sound performance and easy/safe DIYer

accessibility.

lThe pre-amplifier supports both 6DJ8/6922 series and 12AU7 series tubes by

simply switching the jumpers. DIYers can easily change their both series tubes to

enjoy the fun.

lONE bi-triode 6DJ8/6922 or 12AU7 tube as voltage amplification and TWO

MOSFETs as output driver the pre-amplifier perform the warm, comfortable tube

sound and in addition, guarantee the high fidelity & sufficient driving power to the

next power amplifier stage.

lProvide TWO sets of switchable audio inputs in the pre-amplifier. Besides the

normal CD/DAC input, the PC/iPod input with higher gain is provided for small

output PC/Mac/iPod/iPad or PC/Mac.

lUse Apple Line Out cable or RCA cable connect to PC/iPod input and it works with

low output-voltage sources, making Trends Bi-amp Audio System perfect for

integrating your iPhone/iPod/iPad or PC/Mac into your audio system and achieves

the sound quality of high-end Hi-Fi.

lBesides the normal audio output in the back panel, ONE headphone output in the

front of the pre-amplifier to drive even high-impedance audiophile-grade

headphones.

lTWO precise screw-driving potentiometers for professional audiophiles to adjust

the tube’s bias voltage to guarantee the best working point for different tubes.

lThe stylish aluminium case provides outstanding shielding & grounding capability

to keeps the background silent and maximize the S/N ratio.

- Trends TA-10.2P Class-T Power Amplifier (Body) x 2 pcs

- Trends PA-10.1D Tube Headphone/Pre Amplifier –incl. Tube

- Trends Audiophile Audio Cable (1 pair) x 2 pcs.

- Trends 7A AC/DC Dual Power Adaptor(for a pair of TA-10.2P) x 1 pcs.

Trends BA-10 Bi-amp User Guide

Section 5 Overview

- 6 -

A dual power supply for supporting two TA-10.2P power amps

Trends BA-10 Bi-amp User Guide

Section 5 Overview

- 7 -

Remark

Please consult with your dealer or experts if you have any queries for building the

Bi-amp solution

Trends BA-10 Bi-amp User Guide

Section 5 Overview

- 8 -

Trends PA-10/10.1D Tube Headphone/Pre-amp

Front View

PA-10.1D PA-10

1. Headphone Socket

2. Volume Controller – Turn Anti-clockwise to minimize the volume level and vice

versa.

Back View

PA-10.1D (2 Output) PA-10(1 Output)

3. PC/iPod – Input from PC/Mac/iPod/iPad/iPhone with higher gain using audio

cable (2RCA-2RCA)

4. CD/DAC - Input from CD/DAC using audio cable (2RCA-2RCA)

5. Input – Selection for CD/DAC or PC/iPod input. The default is CD/DAC input

6. Output – To any line level input on your amplifier using audio cable(2RCA-2RCA)

7. Power ON/OFF switch – pull up to power on the PA-10 and pull down to power

off.

8. Power Supply Socket – Plug the bundled AC Adaptor to this socket to supply

power.

Trends BA-10 Bi-amp User Guide

Section 5 Overview

- 9 -

Trends TA-10.2 integrated amp./TA-10.2P Power amp.

TA-10.2 TA-10.2P

Stereo amplifier Power amplifier

1. Power Indicator

2. Volume Controller – Turn clockwise to minimize the volume level and vice versa.

3. RIGHT Speaker Output – The negative (-ve) and positive (+ve) speaker

terminals of the RIGHT channel.

4. Audio Input – The audio signal input (LEFT/RIGHT) connects from audio source

(e.g. CD player) to the amplifier by the RCA audio cable.

5. LEFT Speaker Output – The negative (-ve) and positive (+ve) speaker terminals

of the LEFT channel.

6. Power ON/OFF switch – pull up to power on the TA-10 amplifier and pull down to

power off.

7. Power Supply Socket – Plug the bundled AC Adaptor to this socket to supply

power to this amplifier.

Trends BA-10 Bi-amp User Guide

Section 6 Technical Notes

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)

6.1 Jumper Setting for Different Tube Series

You can simply configure the amplifier to support the two different tube series by

resetting the jumpers in J3, J4, J5 in the PCB as follows. (Remember to power OFF

the machine before setting)

6.2 DC Bias Voltage Tuning

Since each tube may derivate a bit in parameters, especially from different series, it

needs to re-tune the DC bias voltages to guarantee the machine is working in the best

point and performing the best sound quality.

There are two blue precise adjustable potentiometers PA-10.1D R5/R6(L/R channel) ;

PA-10 R3/13(L/R channel) for tuning the DC bias voltage of each channel. The DC

bias has been tuned in factory. But after run-in for a period or changed another tube, it

would be deviated that the fine-tuning is needed.

Before you tune these, you need a screwdriver (take off the case), a small screwdriver

(turn the screw of the potentiometer) and a (digital) multi-meter to detect the DC bias

voltage.

PA-10.1D(2 Output) Bias Setting

6DJ8 series 12AU7 series

J3 O O O

O O O

J4 O O O O O O

J5 O O O O O O

Trends BA-10 Bi-amp User Guide

Section 6 Technical Notes / Section 7 Hints & Tips

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PA-10(1 Output) Bias Setting

1. Use screwdriver to take out the two upper level screws in the front panel &

another two screws in the back panel. Then, open the upper case.

2. Power ON the machine with no audio signal input.

3. Wait at least 5 minutes for the machine to run in.

4. Use the multi-meter to detect the DC voltage between the test point A(L) [red] in

the PCB & the GND [black] (e.g. the ring of the power switch or the outer ring of

those RCA sockets) of the LEFT channel.

5. Turn the screw on the top of the R5 of PA-10.1D or R3 of PA-10 potentiometer

by a small screwdriver clockwise or anticlockwise until the voltage as close as to

+16.5V.

6. Then, repeat step 4 and 5 for the RIGHT channel by changing the test point to

A(R) [red] and turning the screw on the top of the R6 of PA-10.1D or R13 of

PA-10 potentiometer.

7. Power OFF the amplifier.

8. Cover back the upper case and tighten the screws.

lUse cloth glove or baggie to hold the tubes, wipe off any fingerprints on glass

portion of tube with a soft cloth. Fingerprints can lead to premature tube failure

lTry not put excess force on the glass of the tube this can (rarely) cause the seal

between the glass and base to leak the vacuum.

lDo not leave Trends BA-10 Bi-amp Audio System unattended for long lengths of

time during the 22 hour initial burn-in

lThe sound of Trends BA-10 will open up after about 5 minutes of warm-up. At

least half an hour of warm-up, if you are doing some audiophile listening

lAlways wait at least 5 minutes prior to turning Trends BA-10 back on after

turning it off.

Trends BA-10 Bi-amp User Guide

Section 8 Specification

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8.1 Specification of the Pre Amplifier Unit

Model PA-10 PA-10.1D

Vacuum Tube

6DJ8/6922 series or 12AU7 series (exchangeable)

Standard Edition: Chinese 6N11 Tube

SE Edition: Russian 6H23n

GE Edition: USA 12AU7 Tube

Output Stage MOSFET x 2

Amplification Gain x3 (for Audio CD/DAC IN)

x6 (for Audio PC/iPod IN)

Signal-to-Noise Ratio

(SNR) 92dB

Dynamic Range 92dB

THD+Noise 0.05% @ 10k ohm

0.15% @ 33 ohm

Input

Two

Audio CD/DAC IN RCA

(Left/Right) x 1 [3Vpp max.]

AND

Audio PC/iPod IN RCA

(Left/Right) x 1 [0.55Vpp max.]

Power Socket(5.5mm/2.1mm)

x 1

Single(switchable)

Audio CD/DAC IN RCA

(Left/Right) x 1 [3Vpp max.]

Audio PC/iPod IN RCA

(Left/Right) x 1 [0.55Vpp max.]

Power Socket(5.5mm/2.1mm)

x 1

Output

Audio OUT RCA(Left/Right) x

Headphone OUT (3.5mm) x 1

Audio OUT RCA(Left/Right) x

Headphone OUT (3.5mm) x 1

Other Switch & Knob

Audio IN selection switch x 1Power ON/OFF switch x 1

Power Indicator (Blue LED under Tube Socket) x1

Volume Knob x 1

Power Supply DC 24V-26.5V (max.)

Dimensions(DxWxH) 114mm x 76mm x 46mm[case only]/145mm[incl.sockets &

knob]

Front Panel 1.5mm 4mm

System Package Trends Combo & Bi-amp BA-10 Bi-amp

Weight 380g 400g

Remark Provide all functions of Tube Headphone Amplifier

Trends BA-10 Bi-amp User Guide

Section 8 Specification

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8.2 Specification of the Amplifier Unit

Spec. (Amplifier Unit): TA-10.2 TA-10.2P

T-Amp IC Tripath TA2024

Output Power 2 x 15W @ 4ohm

2 x 10W @ 8ohm

Signal-to-Noise Ratio

(SNR) 98dB

Dynamic Range >98dB

IHF-IM Distortion 0.10% @ 1W, 4ohm

THD+Noise

"Audiophile" Quality

0.03% @ 9W, 4ohm

0.1% @ 11W 4ohm

0.1% @ 6W 8ohm

High Power

10% @ 15W 4ohm

10% @ 10W 8ohm

Power Efficiency 81% @ 15W, 4ohm

90% @ 10W, 8ohm

Input Audio IN RCA (Left/Right) x 1

Power socket (5.5mm/2.1mm) x 1

Output Speaker OUT (Left) x 1 pair (+ / -)

Speaker OUT (Right) x 1 pair (+ / -)

Other Switch & Knob Power ON/OFF switch x 1

Power Indicator (Blue LED) x 1

Volume knob Yes No

Power Supply DC 12V~13.2V(max.)

Dimensions(DxWxH) 114mm x 76mm x 46mm[case only]/150mm[incl.

sockets & knob]

Weight 500g

8.3 Specification of the AC Adaptor

Model Standard(7A) 10A Version(Optional)

AC Input: Universal AC 100V-240V/50-60Hz 100V-240V/50-60Hz

DC Output DC 12V 7A (84W) DC 12V 10A (120W)

Ripple & Noise <= 50mV <= 50mV

Over-load Protection 105%-150% 105%-150%

Over-voltage Protection 115%-150% 115%-150%

Dimensions(DxWxH) 141mm x 60mm x30.8mm 172mm x 72mm x 31.5mm

Weight 294g 540g

Trends BA-10 Bi-amp User Guide

Section 9 Troubleshooting / Section 10. Accessories

- 14 -

If your machine is out of order, it may not be very serious. Before you call your local

distributor or us to repair, you are suggested to check the following:

Symptoms Possible Reasons Handling Methods

power cords not properly

connected

properly connect the

power cords

cannot power ON

indicator not bright

power switch is OFF switch ON the power

the volume level is too low turn volume level higher

the audio cable not

properly connected

properly connect the

audio cable

the audio source (e.g. CD

player) not started playing

start playing the audio

source

wrong input is selected check input selection

no sound at all

the speaker cables not

properly connected

properly connect the

speaker cables

hum tube not fully pushed in insert Tube securely

audio connector plug not

fully pushed in

insert plug securely

incorrect input switch

position

check the corresponding

input switch

sound out(s) out loose connection check input and output

connections. When all has

been double-checked

reduce volume and switch

unit back on

·Tube x1

·+24V power supply(for preamp) x1

·Power cord x 1

·User Guide x1

·Warranty Card x1

Trends BA-10 Bi-amp User Guide

Section 11. Regulatory Compliance / Section 12. Contact Us

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This device complies with Part 15 of the FCC Rules. Operation is subject to the

following two conditions:

(1) this device may not cause harmful interference, and

(2) this device must accept any interference received, including interference that may

cause undesired operation.

Warning: Changes or modifications to this unit not expressly approved by the party

responsible for compliance could void the user's authority to operate the equipment.

NOTE: This equipment has been tested and found to comply with the limits for a Class B

digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide

reasonable protection against harmful interference in a residential installation. This

equipment generates, uses and can radiate radio frequency energy and, if not installed

and used in accordance with the instructions, may cause harmful interference to radio

communications.

However, there is no guarantee that interference will not occur in a particular installation.

If this equipment does cause harmful interference to radio or television reception, which

can be determined by turning the equipment off and on, the user is encouraged to try to

correct the interference by one or more of the following measures:

- Reorient or relocate the receiving antenna.

- Increase the separation between the equipment and receiver.

- Connect the equipment into an outlet on a circuit different from that to which the

receiver is connected.

- Consult the dealer or an experienced radio/TV technician for help.

ITOK Media Limited (Trends Audio)

Address: Unit E, 13/F., World Tech Centre,

95 How Ming Street, Kwun Tong, Kowloon, Hong Kong

Phone: +852 2304 0730 (9am-6pm, HKG Time)

Fax: +852 2566-5740

Email: sales@TrendsAudio.com (Sales)

support@TrendAudio.com (Support)

Web: http://www.TrendsAudio.com

Trends BA-10 Bi-amp User Guide

Section 13 Trends Bi-amp & Combo Package

- 16 -

-a

13.1 Trends Hi-Fi Systems

Trends BA- 10 SE BA- 10 GE Comb 1 SE Com b 1 GE iCombo SE iCombo GE

Model TA P+ PA DS E TA P+ PA DGE TA P+ PA S E TA P+ PA GE TA P+ PA S E TA P+PA GE

TA -1 0..2 P ü ü ü ü ü ü

PA -10.1D SE

PA -101D GE

PA -10 SE ü ü

PA -10 GE ü ü

PW-10 PSU ü ü ü ü

RCA Cable ü ü ü ü ü ü

Line Out

Cable

ü ü

13.2 Trends Desktop Hi-Fi Systems

Trends Combo 10 Comb 10 SE Comb 10 GE Combo 12 Combo 14 SE Combo 14 GE

Model UDL+ TA P+ PA UDL+ TA P+ PA SE UDL+ TA P+PA GE UDL+ TA UDL+ PA SE UDL+ PA GE

UD-10.1 Lite ü ü ü ü ü ü

TA -1 0.2 P ü ü ü

TA -10.2 ü

PA - 10 ü

PA -10 SE ü ü

PA -10 GE ü ü

PW-10 PSU ü ü ü ü ü ü

RCA Cable ü ü ü

3.5mm to

RCA Cable

ü ü ü ü ü ü

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