Featuring two highly evolved channels, capable of clean tones that shimmer like icicles in the deep of winter moonlight and tube saturation that is so rich and. SHIVA MANUAL – Bogner . UBERSCHALL TWIN JET MANUAL – Bogner Bogner Alchemist User Manual – Revision C – Download BOGNER SHIVA SCH service manual & repair info for electronics experts.

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Please read safety instructions before you use this amplifier!!!

Bogner Amplification | Shiva

Reverb with independent reverb level controls for each channel. Are subject to change anytime, Please measure your shlva carefully if a Custom Case is being made. All measurements include handle and rubber feet. Read this owners manual completely before use to fully understand your Shivas functions. Manusl Master Volume and Presence work on both Channels. Experiment with different combinations between Volume and Master Volume.

One setting could be just as loud as another,but they will feel and sound different. On Channel 1, with the Boost engaged, the Tone-Stack is bypassed. This means the Bass and Treble controls are not in the circuit anymore and have no effect shiga the sound.

This was the only way to have a boost function on this channel with the original unboosted tone preserved. With the Bright switch pushed in you get a brighter more open sound; this is less to none effective the higher the Vol.

On Channel 2, with the Boost off use Vol. This makes the boost variable and you are able to set it quite different. With the Bright switch pushed in you get a brighter more open sound. This gets less effective the higher the Gain is set but still noticeable if turned bogjer the way up. Your individual channel volume levels control how hot the effects loop send signal is, depending on the effect unit you may have to keep the channel volumes lower but you can then bogber up the “Global Master Volume” to control your amps overall volume.

Y ou can only use ONE loop send at a time.

If you’re still overloading the effects input, remember to lower the individual channel volume levels since they control how hot the effects loop send signal is, you can then mwnual up the “Global Master Volume” to control your amps overall volume. If you would like to use the Shiva as a “Power Amp” only with other manufactures Preamps, plug your external preamps output into the “Power Amp In” Input jack on the back panel, mnual near the Effects Loop section.

The “Power Amp In” bypasses the Shiva’s preamp, you can still use the Master volume and Presence controls since these controls are part of the power amp circuit. If you want to use an instrument level floor Effect unit or if your line level rack Effect unit is too sensitive for the hot send signal, you can use our special built in Boost Amp. All you need is a special level ducking cable, available from us or you can make your own, see the “How To Make Effects Cable” link on Shiva portion of our website.

Plug the output of your Effects into the input of the Boost Amp located on the back and hook up the output of the Boost Amp to the return of the Fx Loop with a short jumper cable. This is necessary because of the lower output send level so it does not distort the input of your FX but we have to bring the level back up after it leaves the FX in order to keep the original tone of the amp. Remember bgoner you use the Loop the Channel Volume controls work like send levels, the higher you set the Volume, the more Level comes into the Effect.


Set the Master Volume for overall Volume. The Loop circuit is always in the sound chain even if nothing is hooked up to it.

Siva Boogie_Hotone

If you want to bypass your FX, you would have to do it on the FX unit. If you manuual into the send you tap the signal of the Pre Amp and you could also send it to a recording device, mixer or another power amp etc. It would not be necessary to return the signal back into the amp. On the other hand if you plug into the return you disconnect the Pre Amp from the Power Amp. You could use your Shiva just as a Power Amp.

As always, you must have the amp under load from a speaker cab or load box or damage may occur.

If you switch the Reverb in, you hear a slight level loss. This is because the reverb circuit loads the amp down. On most amps you don’t hear that because they don’t have real reverb bypass and the amp is down loaded all the time.

We decided not to do this because we like the open sound of the amp if you don’t use the reverb. It is possible to change that with a very easy modification. Contact the factory for details. You have individual Reverb controls for each channel located on the bogneer panel. If you put the amp in play make sure you have a load or speaker cabinet hooked up, otherwise you could damage the output transformer and the power tubes.

Let’s begin by hooking up a speaker to the new Speaker 1 “Use First” jack on the back panel of the Shiva. Be sure to set the impedance switch correctly, use the 16, 8, or 4 ohm setting to match your cabinet. If you’re not sure what impedance your cab is, open the back of the cabinet and call your dealer. There are many ways to wire a speaker cabinet and you need to know what yours is rated at. To add bonger second speaker cabinet, use the second speaker jack and make sure both cabinets have matching impedances, the speaker output jacks are parallel so be sure to change the impedance selector to “half” the impedance rating of one speaker cabinet.

Next, flick the power switch front panel, right side to the center “standby” position and let the amp warm up for several minutes.

This will stabilize the circuits and prevent a painful surge from flashing through your tubes. If you’re kind to your amp, it will reward you with grateful reliability. When ready to play, flick the power switch up to the “play” position. This older Shiva does not have an ohm selector, it has 3 speaker output jacks each labeled with an oval containing 2 numbers in it.

One of the numbers in each oval is marked out with a black marker, so only the other number is important to you! If you hook up only one cabinet, the impedance ohm value of amp and cabinet should match: If you hook bgoner two cabinets they must have the same impedance, same ohm value. The total ohm value is half the value of one cabinet since they run parallel now: The EL 34 Model has one 16 and two 8 ohm speaker outputs the transformer has an internal 4 ohm tap also, so the outputs could bognwr wired to 8 4 4 or 16 8 4 ohms if you wanted your amp customized.

Shiva 6L6 models made before Boner approx. The older 6L6 Model have one 8 and two 4 ohm speaker outputs the transformer has an internal 2 ohm tap also, so outputs could be wired to 4 2 2 or 8 4 2 ohms if you wanted your amp customized Keep that in mind because most of the 4×12″ cabinets are 16 ohms.

Your amp comes with a 3 button footswitch, Note: The footswitch jacks are located on the back panel.


Siva Boogie

Current Shivas have a 4-position rotary switch on the right-side back panel. This rotary switch is only active when the footswitch is not plugged in. This rotary switch allows you to activate either: On older Shivas if you don’t connect the footswitch only the Clean Channel manua can be accessed, read further below on how to activate the High Gain channel 2 if not using msnual footswitch.

On reverb models, the reverb is always on if the reverb footswitch plug isn’t connected. NOTE using the “older version” Shiva without the footswitch connected: Some people may not need to use their footswitch because they only need one channel to play thru. The Shiva defaults to the Clean channel with the Reverb on when no footswitch is plugged in, however to activate the High gain channel without using the footswitch you have two options: Other brands may work but maunal risky because of the high plate voltage we use.

We prefer the Chinese 12AX7A’s. The Shiva has 6 preamp tubes 7 in reverb model which do the following: If you want to experiment with different tubes the first 3 tubes are the most noticeable ones, soundwise.

The less gain the tube has and the earlier the tube is in the sound chain 1st, 2nd. Make sure you turn your amp off when you switch tubes and be careful the tubes might be very hot!! Do not touch tube sockets with fingers? Even after turning your amp off and unplugging it from the power outlet there could be enough voltage stored in the capacitors to give you a lethal electrical shock.

The 1×12″ combos made prior to Juneare loaded with a Celestion Classic 80 8 ohm speaker. Subject to change, depending on availability on Speakers. Make sure your read and understand the safety instructions!! Repairs should be done only by knowledgeable Technicians!! Always make sure your Cables, Guitars, Effects and Extension Cabinets are working and hooked up correctly.

If you think something is wrong with your Amp, play straight into the Amp with nothing else hooked up other than a Guitar. That way you make sure it is the Amp. If you own a combo unplug the internal speaker and hook up an external speaker cabinet to make sure it’s only the amp which is faulty.

For noise check the appropriate preamp tubes refer to f. Tubes are delicate and have a limited live span depending on operating time, temperature and mechanical influences. We let our amps run for at least two days before we ship them to make sure that the tubes work properly but since they have a glass housing and delicate little plates inside them it happened that they got damaged during shipping.

Please don’t feel discouraged. We don’t manufacture tubes and can only retest them to make sure they’re okay. To check the fuses, use an Ohmmeter to make sure they’re blown because sometimes you can’t see if they’re blown. The Main fuse for and volt models should be 3A 2A sgiva volt. Use only type “3AG Slow Blow” fuses. You can get those from Radio Shack.

The HT fuse blows bognrr if your power tubes are bad to protect the poweramp circuit from getting damaged. If the Main fuse blows it could be just a voltage peak from your power outlet. Put a new one in and see what happens. If it blows again give us a call. In most cases it is just a 20 cent rectifier diode for the plate voltage which went bad.