AMPEG SVT-1540 HE CLASSIC SERIES ENCLOSURE

Re-wiring and separating the audio ground shield from the power return ground lead in the MOLEX connector is one solution. Email to friends Share on Facebook – opens in a new window or tab Share on Twitter – opens in a new window or tab Share on Pinterest – opens in a new window or tab. Instead, I made my own tube with some nylon washers and used 2 ton epoxy to set it. Tweeter, 8 8″ – Cabinet Covering: Does that make sense or am I that prototype numbnut bass player and about to kill my amp??? Mainly due to the output transformer primary inductance with respect to plate resistance..

See full item description -. Tilt Back Wheels, Side Handles. Please help improve it or discuss these issues on the talk page. So when the follower grid is driven far over its own plate voltage it saturates on the positive half of the signal and thus takes over the BIAS voltage forcing it very positive. The early driver circuit was not properly designed, therefore would blow the B tubes on occasion. Early “blue lines” used B beam power vacuum tubes. Search results 1 – The SVT amps with B tubes tend to put out a bit more power as well as have a more pronounced grind in low mids that makes these amps desirable for some bass players.

The tolex had a lot of rips. White Vinyl – Grille Material: Does that look okay? Recently, I have started to play it with the new Ampeg V4B amp, but never really payed attention to its detailed performance … what I noticed though, is that running cpassic with a single cable 8 ohm output into the left full range jack doesn’t seem to activate the 15″ speaker or at least give me the expected “full range” seies performance … I had all speakers checked and they svt-15440.

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Metal – Grille Color: Silver – Cabinet Features: Vintage 30 – Cabinet Covering: Conversion of B to tubes has a dramatic impact on the output power. Please help improve this article by adding citations to reliable sources. Now, how many people do you know that load these refrigerator sized enclosures with grace? Later s models have the same features as the “black line” SVTs except the lines around the tone controls have rounded corners and curve into the tone controls.

Ampeg: Classic Series – SVTHE

Tweeter, 8 8″ – Cabinet Covering: Celestion – Cabinet Covering: Other notable differences of this era of SVT are found on the back panel, including a toggle switch for 2 or 4 ohm speaker impedance loads and a longer and thicker gauge 3-prong power cable. Some users have an electronics technician re-wire the 12BH7 feed same as on the later heads.

Your amp will work like the SVTII or in the manual… non-biamping amps should have both outputs enxlosure into the bi-amping inputs! These can also be amepg from one of my favorite sites, Fliptops. The A version of SVT amps tends to have a more round, deeper bass sound. They serues a used Ampeg HE cabinet they had sold and had been returned.

The word “valve” refers to the vacuum tubes called “valves” in Britain and some other regions used in the amp. Thanx in advance for your help and advice … greets, Kevin.

Operating Theater: Ampeg 1540HE

Email to friends Share on Facebook – opens in a new window or tab Share on Twitter – opens in a new window or tab Share amleg Pinterest – opens in a new window or tab. Diagrams are available here: Short of rebuilding the entire enclosure, this band-aid is the best you can do for this kinda damage.

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Re-wiring and separating the audio ground shield from the power return ground lead in the MOLEX connector is one solution. In the event of a tube short failure or simply a transient overload condition the diode will conduct once the current in the 22ohm screen resistor reaches 30mA and beyond, preventing further burning of the PCBA. First, I filled in the original screw holes with some toothpicks covered in wood glue. Looking through the manual doesn’t really help, unfortunately in practice, I am not really “bi-amping” the cab … so I was wondering, if it would be possible to use the two 4 ohm outputs and plug each cable into the left and right full range jacks of the cab?

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During loud transients and overloads this will produce an AC signal that far exceed the 12BH7 follower that has V on the plates. G12K85 – Cabinet Covering: The B proved to be unstable in the high-voltage amp, and was switched to the more robust and reliable tube around mid This will make for a very powerful W SVT.

The B tube in itself does not have instability issues and is a reliable tube. serjes

They were moving locations in the East Bay. Free Local Pickup See details. Black Vinyl – Grille Material: Birch – Cabinet Covering:

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