celtic harp

Geoff Welham & Robert Hart; string chart for 30 string Celtic Lap Harp

Find string charts for our harps so you can order new strings or use them as a guide to design your own harp. Select the string chart to suit your harp from the pages below. Note these charts are only for harps made or repaired by Geoff Welham.


Ancient (Bardic) Celtic 30 string lap harp.
 

All length and diameter measurements are in inches as the strings come from the USA
which uses imperial measurements  To convert to millimeters multiply by 25.4

 Celtic harp standard tension   lengths are in  inches 

String No.  Note Pitch Hz Vib. length  Diameter QTY
1 A

1760.000

4.3"

0.025"

 
2 G

1567.982

4.9"

0.025"

 
3 BLUE F

1396.913

5.7"

0.025"

 
4 E

1318.510

6.4"

0.025"

 
5 D

1174.659

6.9"

0.025"

 
6 RED C

1046.502

7.4"

0.025"

 
7 B

932.328

7.5"

0.028"

 
8 A

880.000

7.8"

0.028"

 
9 G

783.991

8.0"

0.028"

 
10BLUE F

698.456

8.4"

0.028"

 
11 E

659.255

9.0"

0.032"

 
12 D

587.330

9.6"

0.032"

 
13 RED C

523.251

10.2"

0.032"

 
14 B

466.164

10.8"

0.032"

 
15 A

440.000

11.6"

0.032"

 
16 G

391.995

12.4"

0.036"

 
  17 BLUE F

349.228

13.2"

036/008"

 
  18 E

329.628

14.2"

036/008"

 
  19 D

293.665

15.0"

036/008"

 
  20  RED MID C

261.626

16.o"

036/008"

 
  21 B

233.082

17.25"

036/010"

 
  22 A

220.000

18.5"

036/010"

 
  23 G

195.998

19.5"

036/013"

 
  24 BLUE F

174.614

20.5"

036/013"

 
  25 E

164.814

22.0"

036/013"

 
  26 D

146.832

22.5"

040/015"

 
  27 RED C

130.813

24.5"

040/015"

 
  28 B

116.541

26.0"

040/015"

 
  29 A

110.000

27.0"

045/018"

 
  30 G

97.999

29.0"

045/018"

 

  

 Celtic harp Light tension  lengths are in  inches 

String No.  Note Pitch Hz Vib.Length   Diameter QTY

1

A

1760.000

4.3

0.025

 

2

G

1567.982

4.9

0.025

 

3 BLUE

F

1396.913

5.7

0.025

 

4

E

1318.510

6.4

0.025

 

5

D

1174.659

6.9

0.025

 

6 RED

C

1046.502

7.4

0.025

 

7

B

932.328

7.5

0.028

 

8

A

880.000

7.8

0.028

 

9

G

783.991

8.0

0.028

 

10 BLUE

F

698.456

8.4

0.028

 

11

E

659.255

9.0

0.032

 

12

D

587.330

9.6

0.032

 

13 RED

C

523.251

10.2

0.032

 

14

B

466.164

10.8

0.032

 

15

A

440.000

11.6

0.032

 

16

G

391.995

12.4

0.036

 

 17 BLUE

F

349.228

13.2

036/008

 

 18

E

329.628

14.2

036/008

 

 19

D

293.665

15.0

036/008

 

 20  RED

MID C

261.626

16.o

036/008

 

 21

B

233.082

17.25

0.036/ 0.010

 

 22

A

220.000

18.5

0.036/ 0.010

 

 23

G

195.998

19.5

0.036/ 0.010

 

  24 BLUE

F

174.614

20.5

0.036/ 0.010

 

 25

E

164.814

22.0

0.036/ 0.010

 

 26

D

146.832

22.5

0.036/ 0.013

 

 27 RED

C

130.813

24.5

0.036/ 0.013

 

 28

B

116.541

26.0

0.036/ 0.013

 

 29

A

110.000

27.0

0.04/0.015

 

 30

G

97.999

29.0

0.040/.015

 
 

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