Peavey PV2600 Capacitor Query

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   I've just popped the top off a Peavey PV2600 I acquired a while back as it has a DDT fault on one channel (cuts in the moment it's turned on). Looking at the circuit diagram and at several pictures of other PV2600's, they are usually fitted with banks of 4x12000uf 63v capacitors on each channel, this one only has a pair of 4700uf 80v fitted each side, and there's no visible evidence there were ever more fitted. Does anyone know if this was an early incarnation or has it been fiddled with? If it's been hacked, can I just replace the existing pair of capacitors with the bank of 4, or are there going to be associated components missing?

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Kernowdragon Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 05 January 2026 Location: UK Status: Offline Points: 2	Post Options Post Reply Quote Kernowdragon Report Post Thanks(0) Quote Reply Topic: Peavey PV2600 Capacitor Query Posted: 05 January 2026 at 3:01pm
	I've just popped the top off a Peavey PV2600 I acquired a while back as it has a DDT fault on one channel (cuts in the moment it's turned on). Looking at the circuit diagram and at several pictures of other PV2600's, they are usually fitted with banks of 4x12000uf 63v capacitors on each channel, this one only has a pair of 4700uf 80v fitted each side, and there's no visible evidence there were ever more fitted. Does anyone know if this was an early incarnation or has it been fiddled with? If it's been hacked, can I just replace the existing pair of capacitors with the bank of 4, or are there going to be associated components missing?

kedwardsleisure Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 20 January 2009 Location: Staffordshire Status: Offline Points: 5157	Post Options Post Reply Quote kedwardsleisure Report Post Thanks(0) Quote Reply Posted: 05 January 2026 at 5:28pm
	The 2600 is class G grounded bridge so it needs at least 4 capacitors per channel, ie +LV1 -LV1 +HV1 -HV1 +LV2 -LV2 +HV2 -HV2 (the same as the ubiquitous QSC RMX2450 et al). That's 8 psu rails = 8 capacitors. It's also why they're rated lower voltage than its smaller sister the PV1500 which is class AB and only needs 2 per channel but at a higher voltager rating. Any chance someone has rebadged a 1500 and sold it as a 2600 in disguise? (edit: some pv1500 revisions do have 2 x smaller capacitors in parallel, but it's the same as 1 larger one on its own, the diagrams make it clearer). Edited by kedwardsleisure - 05 January 2026 at 5:31pm
	Kevin North Staffordshire