Search found 508 matches

by emrr
Sat Feb 13, 2021 3:48 pm
Forum: Build
Topic: Meanwell Single, Bipolar and Triple Output Switching Power Supplies for Audio Projects
Replies: 30
Views: 40081

Re: Meanwell Single, Bipolar and Triple Output Switching Power Supplies for Audio Projects

Further tests are showing the 13k5 and 19k2 bumps to be environmental. Perhaps the 240 you see is too.
by emrr
Fri Feb 12, 2021 3:03 pm
Forum: Build
Topic: Meanwell Single, Bipolar and Triple Output Switching Power Supplies for Audio Projects
Replies: 30
Views: 40081

Re: Meanwell Single, Bipolar and Triple Output Switching Power Supplies for Audio Projects

I recently finished up two projects using Meanwell PD-2515, both with audio input and output transformers. One was 990C based make-up amps for a pair of passive EQ's, no trace of noise heard, virtually nothing registering on a spectrogram. Gain roughly 16dB to get back to unity. No additional filter...
by emrr
Thu Jan 28, 2021 11:04 pm
Forum: Document
Topic: Zener Diode Table
Replies: 4
Views: 6656

Re: Zener Diode Table

I didn’t know that, RIP.
by emrr
Thu Jan 28, 2021 11:03 pm
Forum: Pro Audio Design
Topic: The TL071, TL072 and TL074 "H" Next Generation Enhanced Versions
Replies: 10
Views: 6603

Re: The TL071, TL072 and TL074 "H" Next Generation Enhanced Versions

Interesting. I’ll have to revisit the previous enhanced versions, TL207x I think.
by emrr
Tue Dec 01, 2020 2:13 pm
Forum: The Peabody Lounge
Topic: Guitar Center, Largest US Retailer Of Music Instruments, Files For Bankruptcy (Again)
Replies: 6
Views: 7504

Re: Guitar Center, Largest US Retailer Of Music Instruments, Files For Bankruptcy

JR. wrote:
Wed Nov 25, 2020 9:41 am
The fact that they remain in business at all demonstrates how much extra liquidity is sloshing around the economy. :-(
Enough sloshing for pirates to take to the sea!
by emrr
Sat Nov 14, 2020 8:39 pm
Forum: Pro Audio Design
Topic: API 24 channel summing mixer (pics!)
Replies: 5
Views: 8293

Re: API 24channel summing mixer (pics!)

Very nice
by emrr
Fri Jul 24, 2020 5:31 pm
Forum: The Peabody Lounge
Topic: US Postal Service Air/Sea Shipment Diversion
Replies: 12
Views: 16367

Re: 98 Days to Switzerland

mediatechnology wrote:
Mon Jul 20, 2020 7:51 am

Doug - were those items you received for repair via UPS?

Yes
by emrr
Sun Jul 19, 2020 5:03 pm
Forum: The Peabody Lounge
Topic: US Postal Service Air/Sea Shipment Diversion
Replies: 12
Views: 16367

Re: US Postal Service Air/Sea Shipment Diversion

Yes, Shipping charges to EU from US have really spiked, but it's also true they've gone up enormously within the US. I had someone ship 5 items in 5 boxes for repair recently, AZ to NC, and the round trip shipping had to be near $600. Weights ranging 18-30 lbs. I hadn't seen those press releases. I ...
by emrr
Sat Jun 13, 2020 3:14 pm
Forum: Test, Measurement and Repair
Topic: Classic Bead Tantalum Capacitor Failure
Replies: 17
Views: 21383

Re: Classic Bead Tantalum Capacitor Failure

I didn't remember seeing the Pease correspondence, thanks.