Best Of
Re: Tenma 72-1040 Dual Channel AC Millivolt/dB Meter
So I found a GW 417B/427B service manual. A longer shield is used. Three adjustment pots where indicated, one MIA.... But all is well now! Oh, I have verified my signal generator outputs the voltages selected with a Fluke 87 True RMS meter and a 179.
1kHz tone, 1.0VRMS. Adjust VR101 so meter points at 1.0VRMS.
So where is VR102?
Oh, there you are, as VR201.
1kHz tone, 1.0VRMS. Adjust VR101 and VR201 so meter needles points at 1.0VRMS.
This must be a test, or a mistake. "200kHz tone at 3VRMS. Make sure meter points to 1.0VRMS." No, I don't think so....
200kHz @ 3.0VRMS.
0dBu/dBm, .775mvrms.
-8dB, 308mvrms.
All calibrated and ready to go.
1kHz tone, 1.0VRMS. Adjust VR101 so meter points at 1.0VRMS.
So where is VR102?
Oh, there you are, as VR201.
1kHz tone, 1.0VRMS. Adjust VR101 and VR201 so meter needles points at 1.0VRMS.
This must be a test, or a mistake. "200kHz tone at 3VRMS. Make sure meter points to 1.0VRMS." No, I don't think so....
200kHz @ 3.0VRMS.
0dBu/dBm, .775mvrms.
-8dB, 308mvrms.
All calibrated and ready to go.
SCompRacer
3 ·
Re: Out of the game for years and in need of a new amp for my SDA SRS speakers.
Parasound IIRC is no longer going to make silver gear, therefore they have dropped prices to blow them out.
pitdogg2
3 ·
Re: What Are You Listening To? (Part Deux)
Re-purchase from the Salvation Army. reached for $2 as it is in EX shape.
A nice slice of Hard/Prog Rock from 1975. Side 1 was mastered by KP (Ken Perrry).
Side 2 was mastered by Wally at Capital.
Disco, then Punk kilt these bands.
A nice slice of Hard/Prog Rock from 1975. Side 1 was mastered by KP (Ken Perrry).
Side 2 was mastered by Wally at Capital.
Disco, then Punk kilt these bands.
SIHAB
2 ·
Re: Out of the game for years and in need of a new amp for my SDA SRS speakers.
You must listen to extremely loud music! 
Yes, the Halo A23+ is better: it peaks at 45 amps per channel.
Yes, the Halo A23+ is better: it peaks at 45 amps per channel.
odcics2
1 ·
Re: Out of the game for years and in need of a new amp for my SDA SRS speakers.
I missed the high damping factor being a good thing and something to look for. The benefit difference between a damping factor of 50 and 1000 is laughable. However, to obtain a high damping factor generally requires a lot of negative feedback, which isn't a good thing.
F1nut
2 ·