Supro Thunderbolt Amp - How to Replace the Speaker - Tube amp

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In this video, we'll replace the speaker in a vintage Supro Thunderbolt amp. The original Jensen speaker failed, so I replace it with a new Supro TB15 made by Eminence.
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Let me start by saying: If you don't know how to properly and safely work on a tube amplifier, do yourself a favor and don't remove the amp chassis from the amp. There are lethal voltages inside. Don't touch anything inside the amp chassis. It's easy to replace the speaker by removing the speaker baffle, and then replacing the speaker.
As an amp tech, I wanted to make sure nothing suspicious was happening inside, so I removed the amp chassis. This also gives the viewer a better understanding of what's going on inside their vintage amp, without taking their own apart.
I begin by removing the tubes from the amp.
More below, as always:
vintagemusicte...
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Опубликовано:

15 окт 2024

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Комментарии : 12

@hugomejia593 3 года назад

Beautiful Jensen speaker

@FrankOlsonTwins 3 года назад

I know, if it were mine, I'd consider rebuilding the speaker...

@caseyholford 4 года назад

Cool replacement job! Any reason to keep the old Jensen? Can it be refurbed?

@FrankOlsonTwins 4 года назад

Thanks! You could have the speaker reconed. Reconing the speaker might get you closer to the original sound of the old amp/speaker combo since the magnet structure is exactly the same. It also helps keep the amp more original. I always recommend keeping the original parts in case you ever sell the amp. The new owner may appreciate it. It's usually the same price to have a speaker reconed as replaced, though.

@sonidosoncubano3009 3 года назад

Hi, how are you? I have a doubt. I hope and can you help me. I'm from the city of Mexico and I have a sound and I would like to say that connection is more convenient for me in stereo or monoral since I have the powers QSC 5050 with a B&C speaker of 1200 rms and I want to do. they sound hard. I hope you can advise me

@FrankOlsonTwins 3 года назад

¡Hola! ¡Gracias por tu pregunta! Hay muchas razones por las que podría tener un mal sonido en su sistema de altavoces. ¿Qué suena específicamente mal sobre el sistema? Algunas preguntas: ¿En qué están configurados sus "interruptores de modo"? A veces, si el sonido es demasiado alto en el amplificador, se cortará y sonará mal, así que siempre comience con el volumen bajo en el dispositivo de entrada. ¡Saludos desde Nueva York!

@sonidosoncubano3009 3 года назад

@@FrankOlsonTwins por lo regular los trabajo en paralelo le meto dos bocinas por canal,pero lo que no se es que si inicio de la mezcladora como debo sacar el audio en mono o en estero

@FrankOlsonTwins 3 года назад

Si está usando entradas paralelas, use una señal estéreo. Si usa una salida en puente, use solo una señal mono en el canal uno. el uso de altavoces en paralelo está bien siempre que la clasificación de ohmios sea correcta.

@sonidosoncubano3009 3 года назад

@@FrankOlsonTwins perfecto muchas gracia ,la salida de la mezcladora al driverack,ecualizador y crossover también tiene q ser en estero.??

@FrankOlsonTwins 3 года назад

sí, debería ser estéreo tanto como sea posible.

@williambock1821 11 месяцев назад

Is the TB15 similar to the Legend 1518?

@FrankOlsonTwins 11 месяцев назад

To be honest, I'm not sure how similar or different they'll sound to each other. However, the TB15 is a 75watt speaker, the Legend is a 150 watt speaker. It's a good bet the legend will be quite a bit heavier than the TB15. It would be a noticeable difference when you're carrying the amp around, for what ever that's worth.