| Author: | Celeste hall (registered user: 2235 posts ) |
| Date: | Sun, Mar 18th, 2012 @ 16:42 ( . ) |
See if you can sell it for enough to buy an 18w IIb kit. If you have no use for a mono hifi amp, and it won't fetch half the cost of an equivalent guitar amp kit, then...... If you have to have a classic tone stack, the PI bias issue in not a major problem to over come, just a few wires moved and an extra resistor or two. There are however other tone controls topologies that will not require you convert from DC to AC coupling of the PI. The garnet is a 1 knob that will work with the DC coupling, just some changes around the EF's cathode. If you need more controls, you can split the controls into different parts of the circuit. If you search Melissa here, it is a good example of putting each control where it works the best rather then in a big lump. Unless you know you will not like the UL, there is no reason to disconnect it. Ul got a bad name with guitar amps with amps where it was added as an after thought to amps that were already using a lot of global NFB. Your amp only had UL for NFB and will likely be just fine, at least till the fine tuning stages. |
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