SOLD - THD HOTPLATE - 4 OHM VERSION.

jimkehoe

NOW SOLD.

£180 PPG Shipped within the UK. or £170 collected from just outside Dorking in Surrey.








Industry standard-Solid as a rock and attenuates and tames as well as anything out there. Only suitable for 4 Ohm speaker combinations.

Some minor marks but nothing that effects performance.

INTRODUCTION:
The Hot Plate is a power attenuator that sits between your amp and speaker(s). It allows you to obtain the full output distortion of a tube amplifier at lower volumes, without sacrificing tone.

The Hot Plate can also function as a high quality direct box, allowing you to send the amp’s signal to a mixing board, a separate power amplifier or to rack mount effects without miking the speaker(s).

There are five different Hot Plate models in five colors: The 2Ω (gold), the 2.7Ω (green), the 4Ω (red), the 8Ω (purple), and the 16Ω (blue). To optimize the tone and function of the Hot Plate the impedance should be the same on your amplifier, Hot Plate and speaker cabinet.

OPERATING THE HOT PLATE:

I. AS A POWER ATTENUATOR TO ONE SPEAKER CABINET:

1. Turn the amplifier off or to standby. (If your amp is switched on and is not connected to speakers or to a load, this will strain your amp and can result in blown output tubes and output transformer.)

IMPORTANT: WHEN AMP IS ON IT MUST BE CONNECTED TO A SPEAKER.

The only exception to this is if the amp is connected to the Hot Plate and the Hot Plate is set at load.

2. Connect the Speaker Output on the amplifier to the Input on the Hot Plate using speaker cable.

IMPORTANT: DO NOT USE INSTRUMENT CABLE - IT IS NOT DESIGNED TO HANDLE THE POWER THAT SPEAKER CABLE CAN.

3. Connect Speaker Output 1 or 2 of the Hot Plate to the speaker cabinet. If you are plac- ing the Hot Plate between the amplifier section and the speaker(s) of a “combo,” you may

need an extender cable that has a “male” end (to go into the Hot Plate) and a “female” end (that connects with the cable running from the speaker(s). If your amp does not have a “speaker out” jack (the speaker(s) are wired directly to the amp), have a qualified techni- cian install one.

IMPORTANT: WHEN USING JUST ONE OF THE SPEAKER OUTPUTS FROM THE HOT PLATE, THE SPEAKER CABINET SHOULD HAVE THE SAME IMPEDANCE AS THE HOT PLATE.

4. Adjust the rotary switch on the Hot Plate to attain the volume you desire. At -0 dB the loudness is the same as it would be if the amp were running directly to your speakers. The effective volume will drop in increments of 4 dB as you turn the switch counter-clockwise.

At the -16 dB setting, the potentiometer on the right is activated (at all other settings this pot has no effect so it does not matter where you set it). When the rotary switch is at -16 dB and the pot is turned fully clockwise, the effective volume will be 16 dB less than your unattenuated volume. As you turn the pot counter-clock wise, the volume drops smoothly down to -∞ dB (no sound).

When the rotary switch is at Load, there will be no sound coming through the speakers, but your amp will still be safely running at full output.

5. At -8 dB and below the deep and bright switches will have a noticeable effect. You may want to activate both or either of them (by switching them up) to compen sate for any loss of high and/or low frequencies.

II. AS A POWER ATTENUATOR TO TWO SPEAKER CABINETS:
Same as above, except connect cables from both speaker outputs on the Hot Plate to your two speaker cabinets. These output jacks are wired in parallel, so if both speaker outputs are being used, the 2Ω Hot Plate would be needed for two 4Ω speaker cabinets, the 4Ω Hot plate for two 8Ω cabinets and the 8Ω Hot Plate for two 16Ω cabinets.

IMPORTANT: WHEN USING BOTH SPEAKER OUTPUTS FROM
THE HOT PLATE, THE TWO SPEAKER CABINETS SHOULD HAVE THE SAME IMPEDANCE AS EACH OTHER, AND THAT IM PED ANCE SHOULD BE DOUBLE THE IMPEDANCE OF THE HOT PLATE.

jimkehoe

Bumpety....

jimkehoe

NOW SOLD.