The designations R7, C2, and R8 refer to termination components connected across the transformer secondary, as shown in the DIY500 schematic. R8 provides loading, and R7+C2 comprise a zobel network, when necessary.
A box containing ------ means leave that component out.
A box left blank means we don't have that information yet.
When in doubt, leave the component out.
The following direct box transformers mount directly to the DIY500 PCB
| Brand | Model | Turns Ratio | Voltage Gain (dBu) | actual input Z (Ω) | 1% THD(+N) | R7 (Ω) | C2 (F) | R8 (Ω) | Package | Included on PCB | Fully Tested? | Price (1 piece) | Source(s) | INFO |
| Cinemag | CM-DBXPC | 12:1 | PCB pins | v1 - present | undisclosed | direct | ||||||||
| Jensen | JT-DB-EPC | 12:1 | PCB pins | v1 - present | $73.08 USD | direct | ||||||||
| Sowter | 8044-C | 12:1 | PCB pins | v1 - present | £32.47 GBP | distributors or direct | ||||||||
| Brand | Model | Turns Ratio | Voltage Gain (dBu) | actual input Z (Ω) | 1% THD(+N) | R7 (Ω) | C2 (F) | R8 (Ω) | Package | Included on PCB | Fully Tested? | Price (1 piece) | Source(s) | INFO |
Specifications subject to change without notice.
GMT
