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jjang1993

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Their tone may depend on the circuit. Each have several different circuit versions and tone stacks depending on the era.

 

If they both have volume bass and treble controls and not just a tone knob then they both share the exact same tone stack as do many of the fender amps and use a 250Pf, .1uf and .047uf caps for the tone stack. Brown face amps typically use .022UF caps which change the way the amps sounds.

 

Where the amps will sound different is the Princeton has 3 gain stages before the inverter and its inverter is 1/2 of a 12AX7 which drives the 6V6 push pull amp. The Deluxe only has two gain stages and uses both sides of the 12AX7 inverter to drive the power tubes which is a much more linear design. Depending on how the gain stages are biased, the Princeton is going to sound much hotter then the Deluxe because its got more amplification in the preamp. Its also likely got more distortion and higher noise levels compared to the Deluxe which is going to sound very clean and plush in comparison.

 

Both use 6V6 tubes so the wattage is going to be identical but the drive of the Princeton will have the psychoacoustic of sounding louder. both the bass and treble will sound hyped up on the Princeton unless you have trained ears which distinguish the differences between hyped and un-hyped frequency response.

 

If the speakers and cab sizes are identical the two amps should have similar frequency responses, but their amplification curves will be very different because of the Princeton's extra gain stage and single stage inverter.

 

If you wanted to make the amps sound similar to each other, you'd need to use different speakers. I would think a Higher wattage speaker with a stiffer cone might tame some of the transients in the Princeton and a light weight easily overdriven speaker in the Deluxe might make the two sound closer to one another.

 

In the end however its less to do with frequency response that make them sound different. Its the gain staging that makes the Princeton's preamp hotter and makes the guitar strings more sensitive. You wind up having to turn the Deluxe up louder with its cleaner tone. The two used together in a band are actually quite excellent. The Princeton would make for an excellent lead amp and the deluxe is an excellent Rhythm guitar amp. Personally I'd love using both with an A/B/Y box and simply swap them depending on what parts I'm playing like having a dual channel amp with a clean and drive channel.

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The 12 Watt Princeton tends to fart more than the 20 Watt Deluxe.

 

 

That's due less to the wattage difference between the two amps than it is due to the size of the speakers (10" in most Princetons, 12" in the Deluxe) and the relative sizes of the two cabinets. All other things being equal, a larger driver with a lower Fs, installed in a larger box, will yield better bass response.

 

 

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