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Author Topic: HSS Suhr style wiring with neck on + bridge split  (Read 873 times)

kdas3

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HSS Suhr style wiring with neck on + bridge split
« on: June 03, 2018, 04:35:23 PM »
Hi everyone,

I've ordered an Abraxas bridge humbucker to put into a Warmoth strat which currently has 3 vintage blonde singles. Obviously the bridge single is going and the abraxas is going in.

I've drawn a wiring diagram for a modified Suhr style circuit. First of all I'll call position 1 bridge and position 5 neck. The first difference is minor, it's that tone 2 affects both positions 1 and 2; in the original Suhr it only affects position 1. I don't like tone 1 affecting position 2 so this is why I changed that. The next difference is that there is a bridge split push/pull and a neck on push/pull. There are some resistors that are in parallel with ground so that depending on what pickup selection is chosen, the effective load is appropriate. E.g., if bridge humbucker is selected, the effective load is 250K (equivalent to two 500K pots in the circuit). And similarly for single coils, 125K (two 250 pots in circuit).

However, in position 2, I have not been able to get the effective load quite right; it's at 166K approximately. So it may be slightly brighter than what I'd want but I think this would be negligible. But if anyone can see a way to make position 2 a 125K effective load, that would be great!

P.s. this is my first time using DIYLC, so it may be a bit ugly!


Standard 5 way autosplit               
               
Position   Pickup                             Volume          Tone                       Resistor in parallel to ground    Total load (approx)
1           Bridge hum                     V1 500K           T2 500K               None                                           250K
2           Bridge slug in.p Middle         V1 500K           T2 500K               R3 470K                                    166K
3           Middle                              V1 500K           T1 250K               R3 470K                                    125K
4           Neck in.p Middle              V1 500K           T1 250K               R3 470K                                    125K
5           Neck                                     V1 500K           T1 250K               R2 470K                                   125K
               
With Neck on               
               
Position   Pickup                                        Volume        Tone                           Resistor in parallel to ground    Total load (approx)
1           Bridge hum in.p Neck                        V1 500K         T2 500K                   None                                           250K
2           Bridge slug in.p Middle in.p Neck      V1 500K         T2 500K                   R3 470K                                    166K
3           Neck in.p Middle                          V1 500K         T1 250K                   R3 470K                                    125K
4           Neck in.p Middle                         V1 500K         T1 250K                   R3 470K                                    125K
5           Neck                                                V1 500K         T1 250K                   R2 470K                                   125K
               
With Bridge split                
               
Position   Pickup                         Volume             Tone                 Resistor in parallel to ground    Total load (approx)
1           Bridge slug                 V1 500K              T2 500K                 R4 240K                                   125K
2           Bridge slug in.p Middle     V1 500K              T2 500K                 R3 470K                                    166K
3           Middle                          V1 500K              T1 250K                 R3 470K                                    125K
4           Neck in.p Middle          V1 500K              T1 250K                 R3 470K                                    125K
5           Neck                                 V1 500K              T1 250K                 R2 470K                                   125K
               
               
With Neck on + Bridge split               
               
               
Position   Pickup                                                  Volume             Tone                      Resistor in parallel to ground    Total load (approx)
1           Bridge slug in.p Neck                                  V1 500K              T2 500K                      R4 240K                                   125K
2           Bridge slug in.p Middle in.p Neck                V1 500K              T2 500K                      R3 470K                            166K
3           Neck in.p Middle                                    V1 500K              T1 250K                      R3 470K                            125K
4           Neck in.p Middle                                   V1 500K              T1 250K                      R3 470K                            125K
5           Neck                                                          V1 500K              T1 250K                      R2 470K                                   125K

I don't think those tables will format correctly, but it shouldn't be too bad to follow. 
« Last Edit: June 04, 2018, 05:22:09 PM by kdas3 »