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You can order input voltage 117V, 220V, 230V, 240V.

I dont open information about schematic, parts, transformer using in my amplifier. My brand name is the guarantee to what I do with my production !!!

For all item on eBay, I will discount 10% or more of listing price, contact for more detail.

YouTube channel > Otomon Lab YouTube Channel

Horn Drivers


Total 99 Items.
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GOTO UNIT SG-16TT titanium diaphragm 16ohm tweeter horn driver * RARE

GOTO UNIT SG-16TT titanium diaphragm 16ohm tweeter horn driver * RARE

Sales price: $ 2,250(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
Very rare tweeter horn driver with titanium diaphragm manufactured by GOTO Unit, model SG-16TT.


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The Legend 70s' Early Maxonic horn and driver D51EX field coil with original power supply EX-6

The Legend 70s' Early Maxonic horn and driver D51EX field coil with original power supply EX-6

Sales price: $ 5,250(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
Extra rare Maxonic horn, manufactured in 70s year. Power supply use Tungar tube. Adjustable from 5V to 7V. It is one of Japanese product that has closest sound to Western Electric.


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Field coil speaker power supply for Ferranti speaker output 95V 100mA

Field coil speaker power supply for Ferranti speaker output 95V 100mA

Field coil speaker power supply. Tube is used for current regulator and rectifier.


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Field coil speaker power supply for RCA speaker 250V 100mA

Field coil speaker power supply for RCA speaker 250V 100mA

Field coil speaker power supply. Tube is used for current regulator and rectifier.


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Pair Legend 60s year TECHNICS EAS-20PW55 * sensitive 100db * best matching tube amp

Pair Legend 60s year TECHNICS EAS-20PW55 * sensitive 100db * best matching tube amp

Sales price: $ 600(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
The Legend 60s year TECHNICS 20PW55 (upgrade version of EAS-20PW09) x pair 20cm full range speaker. It is double heavier than EAS-20PW09.


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The Legend 60s' Early Onken wooden horn + unit OM-500T * titan diaphragm *

The Legend 60s' Early Onken wooden horn + unit OM-500T * titan diaphragm *

Sales price: $ 2,600(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
Onken original wooden horn SC-500Wood and OS-500M driver, with titanium diaphragm . Very very rare and hard to get even in Japan market.


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70s year Legend GOTO UNIT Midrange SG-370DX 16ohm with S-600 horn * Ex RARE

70s year Legend GOTO UNIT Midrange SG-370DX 16ohm with S-600 horn * Ex RARE

It is very very rare midrange unit for horn system manufactured by GOTO UNIT, model SG-370DX, come with original horn S-600, best matching for 2,3,4 ways speaker horn system.
This product is currently sold out.

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Field coil speaker power supply for 4 x JENSEN A-12 output 10W

Field coil speaker power supply for 4 x JENSEN A-12 output 10W

Field coil speaker power supply. Tube is used for current regulator and rectifier. Using for 4x JENSEN A-12


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Field coil speaker power supply for Klangfilm, Telefulken, RCA output 10W

Field coil speaker power supply for Klangfilm, Telefulken, RCA output 10W

Field coil speaker power supply. Tube is used for current regulator and rectifier.


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Special order made 3 ways network crossover order made for horn system

Special order made 3 ways network crossover order made for horn system

This is one of the best crossover network that I have made using transformer attenuation for the lowest loss, pure sound from driver unit.


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Early YL Acoustic 3 ways network crossover order made * 800Hz/6.5K Hz for Western , GOTO horn

Early YL Acoustic 3 ways network crossover order made * 800Hz/6.5K Hz for Western , GOTO horn

Very very Rare special order made speaker network by YL accoustic for 3 ways speaker, cut off frequency is 600Hz/5K hz. Best matching with Western, GOTO, Klangfilm , JBL , Altec speaker.
This product is currently sold out.

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Pair Legend 50s year TECHNICS EAS-20PW09 with original box * Japanese Lowther

Pair Legend 50s year TECHNICS EAS-20PW09 with original box * Japanese Lowther

Sales price: $ 485(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
The Legend 50s year TECHNICS EAS-20PW09 x pair full range speaker. Perfect condition. Sound is great, beautiful and best matching with tube amplifier.


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Pair Legend 50s year TECHNICS EAS-20PW09 * Japanese Lowther

Pair Legend 50s year TECHNICS EAS-20PW09 * Japanese Lowther

Sales price: $ 450(Listing price is for payment via Paypal, discount 2% if payment via bank transfer)
The Legend 50s year TECHNICS EAS-20PW09 x pair full range speaker. Perfect condition. Sound is great, beautiful and best matching with tube amplifier.


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Pair Legend 50s year TECHNICS 8P-W1(EAS-20PW09) * Japanese Lowther

Pair Legend 50s year TECHNICS 8P-W1(EAS-20PW09) * Japanese Lowther

The Legend 50s year TECHNICS 8P-W1( early version of EAS-20PW09) x pair full range speaker. Sound is great and best matching with tube amplifier.
This product is currently sold out.

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Pair Legend 50s year TECHNICS EAS-20PW09 * Japanese Lowther

Pair Legend 50s year TECHNICS EAS-20PW09 * Japanese Lowther

The Legend 50s year TECHNICS EAS-20PW09 x pair full range speaker. Perfect condition. Sound is great, beautiful and best matching with tube amplifier.
This product is currently sold out.

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2 ways network crossover order made * for Western , GOTO horn transformer attenuator

2 ways network crossover order made * for Western , GOTO horn transformer attenuator

2 ways crossover network with transformer attenuator.


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